Claude Code use cases
250 real things people got Claude Code to do, each with what they asked, how it went, and the prompt to copy.
Add a battle-of-Alesia expansion to a 1990s game remake
Nate Combs used ChatGPT for research and a prompt, and Claude Code implemented the expansion, iterating on his playtest feedback.
Add agentic forgetting to an agent's memory
Someone implemented a rudimentary version of Tim Kellogg's agentic forgetting approach and reports it works impressively even in its simplest form.
Add travel bookings from email to calendar
The author runs Claude Code from a fixed folder with saved scripts to process new travel booking emails into their calendar.
Analyze a piano recording's BPM, structure and stems
With a skill installed, Claude Code installed ffmpeg and librosa and ran a Python pipeline on a local MP3, producing a report on BPM, structure and stems.
Analyze your chess games into commented videos
A Claude Code skill uses Claude vision plus Stockfish and your audio notes to turn a Lichess game into a commented video analysis.
Apply to jobs with a self-built application agent
Author built an application agent and says it led to interviews at Cohere and Scale AI.
Audit a blog's SEO with a browser
A developer used Claude Code with Puppeteer MCP to browse their blog, check meta tags, speed, structured data and mobile views, and write a report that caught a noindex issue.
Audit a codebase for redundant dependencies and polyfills
An MCP server lets an agent check a codebase for redundant dependencies and polyfills, usable remotely or as a local stdio server.
Audit ad accounts across six platforms
A Claude Code skill runs parallel subagents performing 190 audit checks across ad platforms and produces a prioritized action plan.
Audit and rewrite marketing copy to strip unverified claims
A dual-agent system scores landing page, cold email and pitch deck copy against strict rubrics, then rewrites it to remove fluff and unsupported claims.
Audit cleaning-company sites for AI crawler access
An agent used MCP tools to read robots.txt rules for 14 AI crawlers and check 8 page tags on 18 cleaning-company sites; 9 returned their home page.
Audit subscriptions and email companies to cancel them
Claude Code pulled transactions across credit cards, flagged recurring charges, and drafted cancellation emails, recovering $700.
Audit your posting history for unkept promises with Claude
An agent was given the author's social posting history and found a promise the author had never actually made.
Automate event social posting across platforms
Claude Code connected social channels to drive event registrations, working well on Twitter and Reddit and somewhat on LinkedIn.
Automate lead research, CRM updates and enrichment
Claude Code handles repetitive prospecting-adjacent workflows like lead research, reporting, CRM updates and enrichment.
Automate monthly bookkeeping with Claude Code
A newsletter operator has Claude Code rename files, categorize expenses, match invoices to payments and build summaries, cutting about 6 hours to 20 minutes.
Autonomously test an entire iOS app and report bugs
A tool lets Claude Code drive an iOS app through the accessibility tree, tap every screen, and return a structured bug summary.
Build a 2D platformer game without coding
A content creator with no coding experience used Claude Code to build a black-and-white wave-combat platformer in HTML canvas and played it live.
Build a 3D Blender model from a concept image
The author pasted a concept image of a Fabergé egg and had a coding agent use a local Blender skill to create a Blender model of it.
Build a balloon-camel simulator for an LED Burning Man totem
Author used ChatGPT for reference images and Claude Code to build a Go balloon physics simulator with a web frontend, with Claude looping on screenshots and camera control.
Build a bare-bones Windows VNC client from an email brief with Claude
The author emailed Claude a spec for a minimal VNC viewer targeting Windows 10 over a local SSH tunnel, to be built on a Mac and delivered with a checksum.
Build a C compiler with a team of parallel agents with Claude
Anthropic's engineering write-up on tasking Opus 4.6 agent teams with building a C compiler.
Build a charting tool from blood test PDFs with Claude
Matt Stockton gave Claude his MyChart blood test PDFs and it produced a web app charting results over time and flagging abnormal values in about five minutes.
Build a custom agent to search Cyprus villa rentals
Marc Lou built an agent that combined public real estate data with air quality, water, noise and landslide data into an Airbnb-style interface for villas.
Build a health plan from genetic and bloodwork data
Farzad gave Claude Code his raw 23andme file, bloodwork, artery scans and supplement routine, and a 2-hour conversation produced a tailored health and genetic plan.
Build a newsletter performance dashboard without coding
A non-coding media operator had Claude Code build a dashboard tracking newsletter performance across a network in about 30 minutes; a solo CFO built an expense system.
Build a personal tax refund calculator instead of paying a CPA
A user had Claude Code build an interactive tax calculator using 2025 tables to avoid a $300 CPA fee.
Build a phone voice agent that answers in under half a second
A from-scratch voice agent averaging about 400ms end to end, with streaming speech-to-text, LLM, and text-to-speech and clean barge-ins.
Build a portfolio plan from brokerage exports
Claude Code read a directory of brokerage CSV exports and notes, researched funds, and produced buy, stop-buying and hold lists with a tax-loss harvesting partner fund for each.
Build a thyroid episode warning model from wearable data
Claude Code was given 9.5 years of Apple Watch and Whoop data and built an ML model that backtested as warning of a prior episode before labs confirmed it.
Build a working coding agent in R from three tools
Author builds a functional coding agent in R starting from three tools, then adds tools to make it safer and more efficient.
Build an Excel portfolio tracker from trade logs
Claude Code reads a trade log, writes and runs Python, pulls live Yahoo Finance data and exports Robinhood trade history to build an Excel portfolio tracker.
Build an explorable 3D starship with agents
A hobbyist used agents to design multiple decks of an Excelsior-class starship as a 3D explorable model and to write personalized fanfic prose around it.
Build and balance a live Telegram RPG
A non-coding PM had Claude Code write a Telegram RPG bot, deploy it over SSH, and run tens of thousands of test fights to rebalance classes.
Build data analysis reports and dashboards with a coding agent
A toolkit gives a coding agent a semantic layer and dashboard files so it can query data warehouses and publish in-depth reports and visualizations.
Build data pipelines and analysis for a research paper
A researcher used Claude Code as the main agent to build data pipelines and do the data analysis for a paper, generating over 98% of the code.
Build e-ink fridge shopping list firmware
Claude Code wrote ~2,400 lines of C++ firmware for an ESP32 e-ink fridge magnet shopping list synced with a phone web app, now used by the family.
Build Godot games with paired design and coding agents with Claude Cowork
Cowork handles design docs, task queues and playtests while Claude Code writes GDScript and runs Godot and git.
Build old and new apps with coding agents
Terence Tao describes using modern coding agents to create or revive apps, based on the post title.
Build retro games with a child using Claude Code
An author builds games like a space shooter and an animal hospital game with his 7-year-old, using pixel art assets and a spec drafted via Claude's question tool.
Build small custom agents such as one in a music player
The author writes lots of little agents, for instance inside their music player, noting they are trivial as code.
Build SQLite with a swarm of parallel coding agents
The author recounts using parallel coding agents to build a SQLite implementation and shares experience from it.
Build your own video-editing agents on a canvas
Mosaic lets you create and run multimodal video-editing agents in a node-based editor.
Build YouTube analytics reports and lead outreach with Claude Code
Claude Code pulled YouTube analytics via API into a verified Excel file, built a job-tracking app, and found and enriched sales leads with outreach.
Catch cloud outage risks before they happen
An autonomous ReAct agent that queries real data to stop cloud outages before they occur, built for the Sanity Challenge.
Catch intent conflicts between parallel coding agents
Agents publish planned changes before editing so conflicting architecture changes across parallel worktrees get flagged before code is written.
Catch up on two years of overdue Dutch taxes
Claude Code helped a person almost two years behind on taxes untangle expenses, look up receipts and invoices, and navigate the Dutch tax system.
Check a domain's email records and fix missing DMARC
An agent ran a mail check on its own domain, found no DMARC record, and after one TXT record was added the score rose from 80 to 96.
Check prospect fit and write cold email openers
Claude Code automates checking whether companies fit the target and creates personalized openers, saving manual prospect checking.
Click through macOS app builds to catch visual bugs
A developer used Claude Code computer use to compile, launch, and click through macOS app screens to find layout bugs.
Code from your phone
A write-up on a setup for using Claude Code on the go.
Compete in a real-time strategy game
A game environment built for frontier LLMs to play against each other.
Compile deductions and Schedule C with Claude Code
Claude Code gathered charitable contributions and itemized deductions from sheets, email and statements and built a Schedule C; some categorizing stayed manual.
Compose and produce music through conversation
The author used Claude Code to write music and lyrics and build tooling integrated with Bitwig; one honky-tonk song was made entirely by conversation.
Compose songs by writing synthesis code
The author ran one-shot experiments where Claude Code wrote Python to synthesize music, including a rock song with sung lyrics via macOS say; sampling a song failed.
Control a fan from sleep position
An AI roommate uses a pose model on a Raspberry Pi to watch the user sleep and presses a remote button to turn the fan on or off.
Control a PC and launch World of Warcraft from your phone
A writer had Claude Code run desktop tasks like Calculator to Notepad and, via Dispatch from his phone, launch Battle.net and log into a World of Warcraft character.
Crawl documentation into clean Markdown for AI agents
The author built a documentation crawler for their AI agents that pulled 60 pages of clean Markdown in 49 seconds.
Create accounts, buy domains, and deploy without a human
Cloudflare's announcement that agents can now create Cloudflare accounts, buy domains, and deploy.
Create and read issues from Claude Code via a Tangled MCP server
The author started building an MCP server so Claude Code can create and read issues on Tangled.
Create social media visuals with Canva MCP
The poster tried Canva MCP in Claude Code to produce app marketing visuals and found it a disaster.
Debug code hands-free by voice with Claude Code
Author built a local speech-to-text and text-to-speech stack hooked to Claude Code via MCP, and used it to debug a WhatsApp integration hands-free while brushing teeth.
Debug frontend UI bugs with a browser agent with Claude in Chrome
A frontend developer pairs Claude in Chrome with Claude Code to open the app, click through it, read the DOM, check console errors and network requests, and fix UI bugs.
Debug low-level cryptography code
Cryptography engineer Filippo Valsorda's write-up on Claude Code debugging low-level crypto.
Debug Windows crash dumps with an AI agent via MCP
ForensicDbg is a post-mortem debugger for native Windows x64/x86 crashes with an MCP server so AI agents can debug from interpreted, interlinked crash data.
Decide between points and cash for every trip
Skills and MCP servers that let Claude Code search award flights across 25+ mileage programs, compare cash fares, and check loyalty balances.
Delegate web research from Claude Code to Comet
An MCP server lets Claude Code hand web navigation, login-walled pages and research to Comet while it keeps coding, then returns results.
Design and build a robotic arm with no CAD experience
A builder used Claude Code with FreeCAD and Claude Vision to design, print, and assemble a 5-DOF servo arm with vision and voice control.
Diagnose a killed process on a server with Codex
Codex CLI over SSH found the OOM killer in kernel logs on a 2 GB droplet with no swap and listed fixes by risk without changing anything.
Do equity research with Claude Code without coding
A non-engineer keeps research in a folder of plain-text files managed with Obsidian and uses Claude Code for equity research.
Draft a tax filing from bank statements with Claude Code
A roundup of user reports, including one who had Claude Code draft a tax filing from bank statements and invoices, and another who organized 1,400 screenshots.
Draft and schedule a weekly newsletter
A /newsletter command in Claude Code finds the week's posts, drafts in the author's voice, gets approval, then creates and schedules the broadcast in Kit in about two minutes.
Draft appeals for denied insurance claims
A built AI system reads a denied claim, pulls the patient's record and drafts a formal appeal letter for human review before sending.
Draft pull request reviews for you to edit and send
The poster built a review inbox where Claude Code drafts reviews for piled-up PRs and the user can discuss, rewrite or delete findings before sending.
Draft Reddit answers to reach a karma goal
The poster ran Claude Code as an agent to help write Reddit answers, and one answer did most of the work toward their karma goal.
Edit site design visually and have an agent write the code
CSS Studio lets designers tweak a site visually in the browser and streams the changes via MCP to an existing coding agent that implements them in the codebase.
Extract expenses from credit card statements into Excel
The author had Claude Code read a folder of credit card statements, learn his patterns, and put relevant expenses into an Excel sheet, saving hours; he plans to review subscriptions next.
Extract receipt data for freelancer bookkeeping
An app built with Claude Code extracts vendor, date, total, tax and line items from receipts, including foreign-currency ones at historical exchange rates, for freelancers and small businesses.
Extract vendor PDFs and create QuickBooks invoices
A custom integration built with Claude Code extracts data from vendor PDFs and creates categorized invoices in QuickBooks Online.
File FSA reimbursement claims from invoice PDFs
Claude Code with the Chrome extension parsed Amazon invoice PDFs and spotted duplicates, but couldn't upload files and was slow, so the user had to step in.
Fill a supermarket cart from regular purchases and sales
A developer built a Claude Code skill using Silpo's MCP server to re-add usual groceries, check sales and fill the real cart within a budget, leaving checkout to the human.
Fill out 50 forms from public information
A user had Claude complete 50 individual work forms using public information, then proofread them and found them accurate.
Fill out PDF forms like a W-9 from saved personal details
A Claude Code skill fills PDF forms from supplied details, saves the file and remembers reusable info; flat scanned PDFs are a limitation.
Find a Linux vulnerability hidden for 23 years
An account of Claude Code uncovering a long-standing vulnerability in Linux.
Find and clean leads for recruiting outreach
A recruiting agency owner uses Claude to find leads; a commenter uses it to clean messy data and draft personalized outreach that gets replies.
Find and fix flaky tests in a broken CI pipeline overnight
Claude monitors CI pass rates, identifies worst flaky tests, reproduces them and proposes fixes overnight; pipeline got 20 minutes faster and pass rate rose 35%, with some bad fixes discarded.
Find code faster with a local search agent
A small local agent navigates ColGrep multivector code search and reads files to find things quicker and cheaper, and can be plugged into Claude Code.
Find connections across 100 non-fiction books
Claude Code browses a personal library with CLI tools and surfaces trails of related excerpts across books.
Find exploitable bugs in smart contracts with Claude
Anthropic's red team reports agents finding $4.6M worth of blockchain smart contract exploits.
Generate a daily personalized trading research report from brokerage data with Claude
Lonnie VanZandt's Claude-based assistant reads his Schwab positions and watchlist via MCP, sweeps news and Fed sources, and writes a daily report.
Generate a robot arm CAD model from one prompt with Codex
A text-to-cad skill let Codex produce a 7-DOF robot arm with kinematics, a GUI and STEP parts in one demo prompt, though not the gripper.
Generate ad variations and pull campaign data for growth marketing
Anthropic's growth marketing team used Claude Code to flag underperforming ads from a CSV and generate hundreds of Google Ads variations, plus a Figma plugin and Meta Ads MCP server.
Generate investment analysis from live market data
The poster built a personal wealth advisor in Claude Code that feeds live market data, macro indicators and news into investment analysis.
Generate LEGO CAD models in LDraw with AI agents with ChatGPT
A toolset and docs let ChatGPT and Claude agents write LDraw source files that become LEGO CAD models, packaged as a dockerized web app.
Generate live-coding music with Claude and perform it
An author had Claude write Strudel music code from a style description, hand-fixed hallucinated sample names, then restructured it for live performance and recorded it.
Generate parametric CAD models from a prompt with Claude
An open-source text-to-CAD tool that produces 3D models from text and image references by generating CAD as code.
Generate parametric geometry workflows with an agent
GrassLobster uses agentic AI to generate parametric geometry workflows.
Generate updated research reports on followed companies
The poster built and open-sourced a custom stock-research agent that produces updated reports on companies they follow.
Get a second opinion on an MRI
One person's account of using Claude Code to analyze their own MRI.
Get Microsoft Office running on Linux via Wine
Claude Code did most of the work to make desktop Office 365 run under Wine on Linux without virtualization, packaged as a Nix flake.
Give a coding agent a paper corpus to find new techniques
Poster gave a Claude Code agent access to about 2M papers to search before each attempt; it found techniques it otherwise wouldn't know and beat a baseline agent.
Give a coding agent a world-facing client for a game
The author uses a coding agent to build the game Overlands and is giving it access to the world through a dedicated agent client, where it chose a name and designed its own avatar.
Give a teacher a Claude Code workspace for lessons and reports
Built a Claude Code workspace for a teacher that remembers curriculum, grading style and class size to produce lesson plans, report comments, parent emails and rubrics.
Give agents a multi-engine math kernel via MCP
MathKernel is an evidence-aware multi-engine mathematics kernel exposed as an MCP server for agents to use.
Give an agent persistent memory and identity
A developer gave a Claude Code agent memory and an identity, then reported back on what it was doing four months later.
Give coding agents compiler-accurate Find Usages for C#
Graphify C# lets coding agents find symbol usages in C# codebases with compiler-level accuracy.
Give coding agents git-native persistent memory
A tool that stores persistent memory for AI coding agents in git so context carries across sessions.
Grade papers and build lesson plans for teachers with ChatGPT
Author built a proof-of-concept app using ChatGPT prompt templates to grade papers, generate lesson plans, and give feedback.
Have agents complete online coursework for students
Students reportedly direct AI agents to log into Canvas and Blackboard to take quizzes, watch lectures, write papers and post in discussions.
Index a newsletter archive and repurpose writing
Per the guide, Casey Newton used Claude Code to index 818 newsletter editions in under 30 minutes, and writers audit note vaults and turn essays into newsletter and thread files.
Investigate market moves and alerts with an agent on your charts with Claude
OpenChart lets Claude or Codex annotate chart setups, write indicators, and investigate price alerts, saving research to a local workspace.
Keep a personal website's content updated automatically
A developer's setup for automating their site's content with agents and MCP.
Keep company books with terminal coding agents
The author has kept books for several Swedish companies using Claude Code and Codex, which read receipts, matched bank rows, posted entries and caught a VAT error before filing.
Let a custom agent change its own repository
Author's custom-built agent made its first code change to its own repository.
Let a voice receptionist schedule appointments via MCP
A custom MCP server exposes list, schedule and cancel appointment tools so an ElevenLabs voice agent can handle customer calls against the company CRM.
Let agents build recipe viewer URLs
The author gives agents a skill file and docs so they generate recipe URLs for a recipe viewer, working even in permission-limited agents like ChatGPT web.
Let agents fill out web forms using text-grid page rendering
Author built TextWeb, a text-grid browser so LLM agents can fill out job applications without costly vision models.
Let agents phone restaurants to book tables
Jake built a tool that lets agents like Claude or ChatGPT make phone calls to book tables, handling callback numbers mid-call.
Let AI agents design in Figma
A CLI that lets coding agents create shapes, text, frames and components in Figma, so agents can build layouts and component systems.
Let AI agents file employment tax returns with the IRS
An MCP server in development lets agents submit tax returns (employment forms 941 and 940 first) to the IRS as a tool call; it is still in IRS certification and not yet live.
Let AI agents place DoorDash orders with Claude
DoorDash's dd-cli beta lets agents order food, with a demo of Claude completing a full order end to end.
Let an agent extend its own code inside a Docker sandbox with Claude
An agent built on Claude and Agno implements capabilities in its own source code in Docker, with changes validated, committed, or rolled back; it reached 21+ capabilities.
Let Claude read Apple Health and Fitbit data via MCP
The poster built a setup that lets Claude read Apple Health and Fitbit data and log workouts and meals through MCP.
Let terminal agents make phone calls
A CLI tool built on Twilio gives terminal agents a voice to make calls, with a dashboard for questions they can't answer.
Link journal entries and write book reviews in Obsidian
The author uses Claude Code in their Obsidian vault to add backlinks and entity notes to journal entries and to turn brain dumps into formatted book reviews.
Log tenant maintenance requests for rental properties
In a vendor demo, Claude Code connected to TIDY's MCP server logs maintenance requests, notifies a handyman and escalates an urgent issue.
Make auditable rule-based decisions with RAG-written explanations with Claude
A Rete rule engine decides loans, fraud and triage cases, then RAG over policy documents has an LLM explain the verdict, with an MCP server available.
Manage an inbox and build courses and budgets with Claude Code
A non-technical user filters their inbox to emails needing replies, turned 15 homeschool PDFs into interactive narrated courses, and built a budget dashboard.
Manage Canvas courses in plain English
The author built a Canvas LMS tool with Claude Code that lets educators list courses, find missing submissions, monitor forums, schedule announcements and export the gradebook.
Manage files in a chosen folder with an agent
The author built an open-source desktop agent that works inside a chosen folder, reading and writing files and asking before changing anything.
Manage Home Assistant automations with Claude Code
Adam uses Claude Code via an MCP server to search entities, read automation traces and build and debug automations like a shed motion light.
Manage investments, taxes and credit with a finance agent
The poster built a Claude Code personal finance agent to track investments, prepare for self-employment taxes and optimize credit utilization.
Manage NixOS server configs with Claude Code
The author uses Claude Code to maintain the NixOS config repo for their self-hosted machines, blocked from running nixos-rebuild switch and reviewing each change before applying it manually.
Map and control a whole smart home
Karpathy's agent scanned the home network, logged into Sonos, reverse-engineered APIs, mapped lights, HVAC, shades, pool and security, and built a dashboard.
Migrate a legacy product stack with Claude Code
An engineer ran a proof-of-concept that consolidated 4 repos into 2, moved MySQL to PostgreSQL, upgraded frameworks and replaced the auth model, in about 15 work days.
Migrate a password reset flow to modern libraries
A developer had Claude Code migrate a legacy web app's password reset flow; it needed close supervision, drifted off task, and ended up slower than doing it by hand.
Migrate a SaaS from AWS to DigitalOcean
A developer used Claude Code as a pair programmer for provisioning, database seeding, SSL, DNS cutover and production debugging, finishing in about four hours with zero downtime by his account.
Migrate toolchain, architecture and site design with Claude Code
A developer had Claude Code switch a monorepo to oxlint/oxfmt, restructure the architecture and redesign a site, validating in a loop; the redesign took days instead of weeks.
Migrate WordPress posts to MDX
Claude Code pulled posts from the WordPress REST API and converted them to MDX with frontmatter, migrating 367 posts and 5 pages in one session.
One-shot a CLI coding agent on top of a Python LLM library
Simon Willison had the Fable model more or less one-shot a CLI coding agent built on his LLM Python library.
Optimize CUDA kernels with agents that benchmark and profile
AI agents run a C++ CUDA test harness, get benchmarks, and profile with Nsight to optimize kernels, built with LangGraph.
Orchestrate a multi-phase RAG migration with Gemini
A walkthrough of using Gemini CLI to coordinate a complex, multi-phase cloud migration project.
Organize Canvas courses with an in-platform agent
Instructure says early adopters use its IgniteAI Agent to rename modules consistently, bulk-change due dates, and rebuild course pages; this comes from a vendor video with no named users.
Pair-program with LLMs on personal projects with Claude
The author uses Claude web and Jules (Gemini with GitHub integration) as pair-programming partners, navigating while coding locally and submitting back.
Patch laptop BIOS to unlock hidden firmware menus
A Reddit user gave Claude Code a BIOS dump; it disassembled it, found the signature check and patched it, unlocking hidden settings after flashing (secondhand account).
Plan meals and track symptoms with Claude Code
Claude Code plans meals, tracks nutrition and analyzes symptoms, scraping recipe nutrition data via the USDA API and storing it.
Play mayor in SimCity through an API
A headless city simulator on the open-source Micropolis engine where anyone's agent can run a city.
Play RollerCoaster Tycoon
Ramp Labs put Claude Code in RollerCoaster Tycoon.
Play-test your own game
A developer built an agentic test harness so an AI could play their game and help with play-testing.
Port Claude Code hooks to pi extensions
After leaving Claude, the author pointed an agent at their Claude hooks folder and had it rebuild them as a pi extension, which it did quickly.
Port Claude Code skills to Codex
The author moved 201 Claude Code skills to Codex in an afternoon using a skill inside Claude Code, and reports what transferred and what broke.
Prepare federal and state tax returns from a folder with Claude
A Redditor pointed Claude at their tax folder and asked it to do their taxes; they say returns for 2024 and 2025 came back in 15 minutes and matched TurboTax, but needed mailing.
Prepare S-Corp tax filings from bookkeeping data
Claude Code wrote scripts parsing QuickBooks and bank statements, and Codex reviewed the code and caught errors like a wrong Schedule L mapping.
Produce a finished music release from one chat
Claude Code wrote lyrics, generated and mastered the song, made cover art and a 10-second video via an MCP connector in about 6 minutes; clip joined with ffmpeg outside.
Program a sub-$2k personal robot
MARS is a general-purpose robot with an open onboard agentic OS built on ROS2.
Pull action items from emails with Claude Code
After seeing Claude Code extract and organise action items from emails in plain English, Becky tried it and built four apps in three weeks.
Pull invoices from Gmail and organize them
The poster built a tool that pulls invoices from Gmail and organizes them with AI, with possible QuickBooks or Xero integration.
Qualify scraped leads and write personalized openers
Claude Code researches company news for icebreakers, qualifies leads from scraped lists and writes personalized opener variations.
Query 600 GB of Hacker News, arXiv, and LessWrong in plain English
Claude Code writes the SQL and vector queries against a public read-only index, and can set email alerts for nuanced criteria.
Read and edit Word, Excel, and PowerPoint files
OfficeCLI is an office suite built for agents to read and edit Microsoft Office files.
Rebuild a math curriculum into a one-year plan with materials
Claude restructured an accelerated math curriculum into one year, writing tests, games, worksheets, a schedule, and a hosted site integrated with a teacher planner.
Recompile a 1991 assembly PC game with Claude Code
The author uses Claude Code CLI with Sonnet to get the source of their 1991 386+ assembly game compiling again.
Reconcile industry files and chase clarifications with agents
An agent workflow ingests a complex industry file, loads it into a database, spawns agents to check it against work in flight, and contacts people to resolve bad data.
Reconcile monthly business transactions
Claude Code pulled a month of transactions over MCP and matched bank rows to receipts, proposing categories; it reconciled 200 rows but miscategorized 11, caught in a manual audit.
Reconfigure Home Assistant lighting automations
Levelsio used AI to rework Home Assistant so bright LEDs turn off and diffuse lights come on, with all lights off at 10pm and red for sleep.
Record how you work, then automate the repetitive parts
Screenpipe records screen and audio locally and gives agents a searchable memory to turn repeated tasks into procedures.
Record meetings and suggest answers live from uploaded files with Claude
An open-source Mac recorder transcribes calls and, using the user's uploaded files, suggests answers when it hears questions.
Recreate a video ad as a JavaScript animation with Claude
The author had Claude recreate a downloaded ad video as a pure JavaScript animation with the original audio, working autonomously with ffmpeg in under an hour.
Regrade assignments and update grades in Brightspace
A professor had an agent regrade TA-graded assignments, verify answers with Claude, and revise grades and feedback in Brightspace, catching missed issues.
Replace token-heavy Jira and GitLab MCPs with CLI skills
The author had Claude run --help on Atlassian and GitLab CLIs, saved the actions as Markdown, and built lightweight agent plugins that cut token use.
Research and draft cold outreach with Claude Code
Claude Code handles research and drafting for cold outreach while a separate platform sends at scale.
Research companies and fill a CRM for outreach
Claude Code researches target companies, creates Attio CRM records via MCP, builds personalized reports and drafts outreach; a first run contacted 80 companies for one sale.
Research crypto assets and execute swaps and perps trades
The Midas Markets agent researches assets, analyzes portfolios and PnL, finds tokens by momentum, and executes swaps and perp positions on Hyperliquid.
Research stock positions as an AI analyst
A Claude Code agent twice weekly covers about 15 positions and a watchlist with news synthesis and bull/bear cases, while a human sets risk limits and approves trades.
Research stocks by pulling filings and transcripts
The poster has Claude Code fetch filings, transcripts and SEC documents for a company, cite sources, and write a bear case on a holding.
Restyle a pull request to match repo house style
A developer asked Claude to update a PR to the repo's house style, but it only rewrote comments to be lowercase and less useful, making no code changes.
Reverse-engineer a 1997 PC game and make it run on modern hardware
Claude Code got an old DirectX game running on modern hardware, decompiled much of it, built a headless parallel runner, and now writes full level guides with screenshots.
Reverse-engineer a book file format to search it with Claude
After the RAG indexer crashed on an uploaded book, Claude used Unix commands to work out the file format and grep the book manually.
Reverse engineer a classic game ROM via Ghidra MCP with Claude
The author connected Claude to Ghidra through MCP to analyze and rename functions in an Atari River Raid ROM.
Reverse engineer a patch into a full exploit chain
A researcher used Claude Opus in Claude Code with Playwright MCP to decompile code, find vulnerabilities, and build a working exploit.
Reverse-engineer binaries in Ghidra
An MCP server exposing 110 Ghidra tools for AI-assisted reverse engineering.
Reverse engineer Claude Desktop to find a path to Linux support
A maintainer pointed Claude at the minified Claude Desktop app to find why Cowork only runs on macOS; it found the VM and sandbox layers and mapped a route to Linux.
Review contracts like NDAs and SaaS agreements in Claude Code
The author built an open-source contract-review skill for Claude Code and other AI coding tools to review NDAs, SaaS agreements, vendor terms and merchant agreements.
Revise courses from student evaluation feedback
A professor had Claude Code summarize course-evaluation PDFs, filed themes as GitHub issues, and used agents to revise his security course and two others.
Rewrite low-CTR meta titles and audit sites for SEO
An SEO agency tests Claude Code with a CMS API and Search Console to rewrite meta tags for low-CTR pages, push changes, and audit robots.txt, sitemaps and structured data.
Run a daily SEO article campaign
An agent researches keywords, publishes one SEO article daily and refreshes articles every two weeks using Search Console and Ahrefs data.
Run a live Kalshi prediction-market account autonomously
An agent using Claude Code traded a $20 Kalshi account for nine days under supervision, earning $20.30 in incentive payouts against $36.06 in trading losses.
Run a self-hosted, sandboxed software factory with Codex
One developer's build log of an almost fully self-hosted, sandboxed agentic pipeline for producing software.
Run a solo business with a team of 16 agents
A solo founder uses ~16 Claude and Codex agents for lead research, cold emails, CRM upkeep, SEO content and call prep, and says it found and qualified a first pilot customer.
Run a solo company with eight agent departments with GitHub Copilot
A founder set up CEO, CFO, COO, lawyer, accountant, marketing, CTO, and improver agents that share memory and consult each other.
Run academic literature reviews from seed papers
Poster built an agent skill that starts from seed papers, searches backward and forward, screens candidates, and iteratively refines a literature review.
Run an AI agent on a Nokia 110 feature phone
Author reverse-engineered a 48MB-RAM Nokia 110 to run an AI agent on it and automate a few actions.
Run an autonomous loop that builds SEO pages and tools
An agent loop reading a revenue dashboard ran 365 cycles, generating 394 interlinked SEO pages and a webhook inspection tool with landing page, docs and drafted outreach.
Run an entire business from the terminal with Claude Code
Poster built a system that runs their whole business through Claude Code instead of Claude.ai; the specific tasks aren't detailed in the snippet.
Run an overnight chief of staff for email and calendar
A Claude Code system triages email at 5:30 AM, preps the calendar, updates tasks, adds drive-time events from traffic data and time-blocks the day.
Run brand marketing end to end and publish to social
A tool lets Claude Code scrape competitors, generate and edit images and videos, and publish to Instagram, TikTok, LinkedIn, X and Reddit; one video reportedly hit 5.3M views.
Run Claude on a cronjob for morning briefings and email tasks with Claude
User built a Claude-in-a-loop with cron that produces morning briefings and podcasts and handles tasks emailed or texted to it.
Run coding agents like a medical team to fix bugs
Over five months, the author treated bugs like patients and organized coding agents as a hospital-style team to diagnose and fix them.
Run company departments with persistent self-hosted agents
A self-hosted company OS runs Claude Code and Codex agents per department, with memory, schedules, phone calls via Twilio, and document/video editing.
Run data cleaning to executive summary with agent pipeline
Built five Claude Code agents (cleaner, analyzer, visualizer, report writer, summarizer) chained by an orchestrator for end-to-end data analysis.
Run life admin and to-dos from Claude Code
A new mom and entrepreneur uses Claude Code to capture to-dos, break overwhelming tasks into 10-minute first steps, and learn her preferences into a file.
Run marketing campaigns, SEO and content with agents
The author built 18 open-source marketing agents for Claude Code covering campaigns, SEO, content and social posting.
Run marketing operations with a team of subagents
A CMO agent reads the weekly plan and spawns specialist subagents like a social media marketer and performance reviewer; the social agent double-posted to Reddit in week one.
Run Monte Carlo simulations on a retirement portfolio with Claude
Poster used Claude to rebuild their retirement portfolio and test sequence-of-returns risk by inserting past bear markets into growth paths.
Run multi-agent LLM financial trading analysis
A framework of multiple LLM agents that collaborate on financial trading decisions.
Run multi-stage PR reviews with parallel sub-agents
A Claude Code plugin that reviews pull requests in stages with sub-agents and validation passes, with optional ensemble review via Codex.
Run nightly briefing pipelines with scheduled tasks
The author uses Claude Code cloud scheduled tasks for nightly pipelines that scan work, generate retrospectives, and assemble morning briefings.
Run parallel coding agents from Markdown specs in tmux
A workflow post on running multiple coding agents in parallel using tmux and Markdown specs, based on the title.
Run parallel local coding agent sessions
A developer runs up to 10 coding agent sessions at once, using Claude Code and local models on RTX 3090s with cached contexts for daily development work.
Run persistent financial research with an agent
LangAlpha is a Claude Code-style agent for investing research that keeps persistent workspaces and memory so analysis such as models and comps can be updated across sessions.
Run personal life admin with Claude Code skills
Claude Code skills look up trash schedules, book a cheaper car inspection, add calendar events, and send morning briefs from email and texts.
Run real estate transactions with autonomous agents with Claude
A poster built a platform where agents, including a SellerBot, handle listings, pricing strategy and buyer inquiries, built with Claude as the coding assistant.
Run sandboxed Claude Code fleet sharing files via MCP
A developer runs a fleet of sandboxed Claude Code instances that share files through MCP tools on a virtual filesystem, with an orchestrator handling AWS storage and audit logs.
Screen 115 job candidates with parallel agents
A team connected Notion to Claude Code, dispatching one agent per candidate to check data and GitHub evidence against a rubric, producing a ranked shortlist for $65.
Search LinkedIn and submit tailored job applications
Claude Code drives a real Chrome browser to find matching jobs from a resume, collect them in a CSV, write cover letters, fill forms and submit.
Search literature and write notes into Zotero with Claude
A researcher uses Claude to search Google Scholar, follow citations, query a Zotero library in natural language, and write summary notes into Zotero or Obsidian.
Search years of research files in an Obsidian vault
Claude Code, guided by a CLAUDE.md, searches research papers, scans and PDFs via Spotlight, extracts text, and files daily notes in dated folders.
Self-host services on a home server
A write-up on how CLI agents make running your own home server easier and more fun.
Set up a Reddit profile through desktop control
A commenter says Claude Code set up their Reddit profile by screenshotting, navigating settings, filling forms and uploading images.
Spec features with AI and hand off to coding agent with ChatGPT
Author discusses a spec with an AI agent or ChatGPT, then hands it to an agent to code, and tests the outcome instead of reading every line.
Suggest date ideas and nudge for more date nights
Trained a Claude Code assistant with date spot lists and guidelines to suggest dates, nudge when needed and possibly book reservations.
Summarize 20 articles into a cited document
An agent extracted key insights from 20 articles, found common themes and produced a cited summary; the write-up estimates 18 minutes versus hours by hand.
Summarize new arXiv papers into notes with scheduled agents
Scheduled scripts produce a daily arXiv digest, and a nightly script launches Claude Code agents to summarize each saved PDF into a notes folder.
Summarize non-obvious methods file by file in a paper project
A commenter had Claude Code write file-by-file summaries of non-obvious methods in a research project, then reviewed them to keep track of the work.
Summarize Reddit threads before writing code
The poster built an MCP server so Claude Code summarizes about 30 Reddit threads in around 10 seconds as research before coding.
Synthesize interview transcripts and PDFs for research
Claude Code is pointed at transcripts and PDFs to produce theme summaries, evidence tables and annotated bibliographies; a UX researcher runs 50-transcript studies this way.
Take ideas to implementation with a planning-command pipeline
A solo SaaS founder uses a custom five-command agent flow (intent, impact analysis, planning, execution, review) with lint guardrails to ship features in a production product.
Test AI annotations on student problem sets with Claude
A chemistry professor ran 11 students' problem sets through Claude to see if its annotations could help manual grading; the project was accidentally left public, exposing student information.
Test how well coding agents can onboard to your product
ax-check.com runs coding agents in sandboxes to try onboarding to a product, then returns a scorecard, suggested fixes, and full session traces.
Test local web apps and fix errors in one session
Claude Code with Claude in Chrome writes code, opens localhost, clicks through the UI, reads console errors and fixes them without the developer touching the browser.
Track daily price and stock changes on Shopify stores
An agent reads a Shopify store's public product feed daily and reports new, removed, price and stock changes, e.g. 692 products at allbirds.com.
Track investments over time via Claude Code and Robinhood MCP
Poster asks how to get Claude Code connected to Robinhood via MCP to keep tracking investments after researching or trading; a question, not a finished result.
Track pantry stock from receipts and buy groceries
A custom AI system reads receipts, estimates kitchen stock, checks grocery store availability and prices, buys groceries, and suggests recipes.
Track personal finances nightly from bank emails
A non-coder had Claude Code build a finance tracker that pulls bank emails, categorizes spending, and runs nightly on a Raspberry Pi.
Track personal finances with a Claude Code assistant
The author built a Claude Code financial assistant using macro data over MCP and his own financials to track his finances, assess health and support investment decisions.
Triage a founder's inbox with Claude Code and Gmail MCP
A team connected a Gmail MCP server so Claude Code reads the inbox, labels messages and drafts replies, plus calendar prep and reports.
Triage issues and open fix PRs with a GitHub bot
A cookbook shows a GitHub bot that triages issues, reviews PRs, answers questions with citations, flags AI-slop contributions, and opens patch PRs for human review.
Triage support tickets and draft replies
A Claude Code skill builds scripts against support, billing and database APIs to list and triage tickets, gather billing context, draft replies, and run refunds and cancellations.
Try to book a Warsaw to London trip with Claude with Claude
The poster tried to have Claude fully book flights and hotel via Expedia and Kiwi connectors, found them poor, and ended up building a travel booking project instead.
Turn newsletters into branded LinkedIn carousels
A newsletter writer built a Claude Code skill that converts a newsletter URL or text into 5-10 slide HTML/CSS carousels in under 5 minutes.
Turn one goal into an ordered plan of coding-agent tasks
Ordewell takes a single goal and breaks it into an ordered plan of tasks for coding agents.
Turn YouTube videos into cited research notes
The author uses Claude Code with NotebookLM and Obsidian to turn 20 videos into cited notes, audio overviews, a knowledge graph and flashcards.
Update a household wiki with an LLM via MCP
The author's wife plugged an MCP server into their household Wiki.js so an LLM can update the wiki.
Use a coding agent for everyday non-programming chores
A user's Claude Code handled non-coding tasks: photo edits, PDF analysis for exam prep, killing a hung process, finding materials, checking warranties, and renaming an agent across files.
Verify SPICE simulations against a real oscilloscope
MCP servers for an oscilloscope and SPICE simulator let Claude Code compare simulated circuits with real hardware measurements, closing the loop.
Work helpdesk tickets with Claude Code and custom GPTs
Support admins built CLIs and skills for Confluence, Jira and Zendesk with Claude Code, and used a custom GPT to draft ticket answers that had to be pasted back manually.
Work on mainframes and COBOL
Hopper is an agentic development environment for the mainframe systems behind banking, payments, insurance, and airlines.
Write a Linux kernel improvement with Claude Code
Linus Torvalds is working on a sizable Linux kernel patch written with Claude Code, per the headline.
Write better CSS with an MDN-aware helper
An MCP server that consults MDN docs, reports browser compatibility, and analyzes your CSS for the agent.
Write Playwright tests with Playwright MCP and Claude Code
A walkthrough of using Playwright MCP with Claude Code to generate Playwright tests in minutes.