Context Overflow

MCP serverDev tools

When something is going wrong with your AI, describe the problem and get back a named technique that you and your AI can both read. This gives you a shared reference to work from while fixing the issue. No sign-in or account is needed.

Use Context Overflow in Claude, ChatGPT or Ahel Desktop

Free. Sign in, add Context Overflow and connect your AI. About a minute.

Also: Claude Code · Cursor · Codex

Then ask your AI: use Context Overflow to list categories

Details

Available today. Use it from your connected AI after setup.

Add the library, then describe the problem you are seeing with your AI. It returns a named technique that you and your AI can both read.

Context OverflowStart free

What your AI can do with it

  • Describe what is going wrong with your AI and get a named technique in return
  • Read the same technique as your AI so you both work from one reference
  • Get a specific, named technique rather than general advice
  • Use it without signing in or creating an account

Install Context Overflow

The server’s own address, for the clients that take one directly. Or connect Ahel once and every client you use reads it from one address, with the account kept on Ahel rather than in each client’s config.

  • Claude Code

    claude mcp add --transport http --scope user context-overflow 'https://contextoverflow.org/mcp'

    Run it once in your project, then open /mcp to approve any sign-in the server asks for.

  • Claude Desktop

    https://contextoverflow.org/mcp

    Add a custom connector in Settings, paste this address, and approve the sign-in.

  • Cursor

    cursor://anysphere.cursor-deeplink/mcp/install?name=context-overflow&config=eyJ1cmwiOiJodHRwczovL2NvbnRleHRvdmVyZmxvdy5vcmcvbWNwIn0=

    Open the link and Cursor adds the server at that address.

  • ChatGPT

    https://contextoverflow.org/mcp

    In Settings, enable Developer mode, create an MCP app, and paste this address. Your plan and workspace must allow custom apps.

  • Codex

    codex mcp add context-overflow --url 'https://contextoverflow.org/mcp'

    Run it once, then sign in with codex mcp login context-overflow if the server asks for an account.

From the project's README

As published by onnson/context-overflow in README.md.

Like Stack Overflow, but for context engineering — thinking techniques for humans and AI agents, from one corpus, through two doors.

Most guides teach you to write better prompts. Context Overflow teaches something different: how to work with AI so that it extends your thinking instead of replacing it — and gives your agent the same techniques through a protocol it can actually run.

The two doors

For humans — contextoverflow.org. A curated, categorized corpus of thinking techniques. No login, no feed. You arrive with a problem — the site opens with "What's going wrong?" — find the technique that fits, and learn to build it into a prompt yourself: worked, annotated examples, never copy-paste snippets. The research reference for what this counters: contextoverflow.org/cognitive-debt.

For agents — MCP at contextoverflow.org/mcp. The same corpus served over Streamable HTTP; free, keyless, stateless. Listed in the official MCP Registry as org.contextoverflow/library. Five tools:

ToolWhat it does
list_categoriesThe major problem categories, as a human would say them
classify_intentSymptom description → matching techniques; genuinely ambiguous → one clarifying question, never a guess
find_techniqueDirect lookup by name
get_techniqueMechanism, agent instructions, verification, failure modes
apply_techniqueThe runnable scaffold + narration line + the check that proves it worked

Every response carries a narration line, so the agent's technique use surfaces in-conversation in the same vocabulary its human learned on the site. When your agent says "one real unknown before I act," you know exactly which technique is running. Both sides of the pair get smarter; neither goes opaque. Setup for every client: contextoverflow.org/connect.

The major problem categories we've found so far

lost-the-thread · doing-my-thinking · confidently-wrong · agrees-with-everything · stalls-instead-of-acting · bloated-answers · starting-blind · problem-too-big · faster-than-i-can-review · did-more-than-i-asked · dumber-after-the-update

Each named for the problem as you experience it — "My AI forgets everything between sessions," "It tells me I'm right even when I'm not." Every technique lives in exactly one, and answers it.

What makes an entry

Entries are grounded in real production use (generalized field notes) or published research (verified citations only — an unverifiable attribution doesn't ship). Every entry states its mechanism, its verification check, and its failure modes — if we can't tell you how to know it worked, it doesn't ship. The full contract: corpus/SCHEMA.md.

Repository layout

  • corpus/ — the techniques. The repo is the database; site and MCP are two views of it.
  • site/ — the human door: Jekyll, generated from the corpus at build time.
  • mcp/ — the agent door: a stateless TypeScript Cloudflare Worker, corpus compiled in, no LLM inside.
  • validator/ — the gate both doors build behind: schema, section order, edge integrity, and a build-failing privacy blocklist.

Contributing

See CONTRIBUTING.md. Short version: the front door is the suggestion box — propose techniques, vote on what gets built next; issues are open for evidence-based disagreement. Corpus and code PRs aren't accepted right now; every entry that ships passes the validator and carries real evidence.

License

Why these licenses. Context Overflow is free to read, learn from, and use — by people and by their AI. AI crawlers are welcome, and the corpus is served live to agents over MCP, because a shared vocabulary between a human and their assistant is the entire point. What the licenses reserve is commercial repackaging: the corpus may not be rebundled or sold as a competing product (NC-ND), and the code may not be offered as a hosted service (Elastic 2.0). Learn it, teach it to your agent, build it into your prompts — just don't repackage it.

Tools it offers (5)

What this server listed when Ahel dialed its public endpoint in Oct 2026, with no key and no account of yours. The names are the server’s own.

  • list_categories
  • classify_intent
  • find_technique
  • get_technique
  • apply_technique

Signals

Last commit
Aug 2026
Advanced
Delivery
library MCP server → your Ahel connector (mcp.ahel.ai) → your AI.
Item type
mcp-server
Key
org-contextoverflow-library
Source
github.com/onnson/context-overflow
Hosted endpoint
https://contextoverflow.org/mcp