# Hanging Context developers

> Fresh context for agents. Rebuilt every 12 hours. Provenance by Synorb.

This file lists what a developer needs to call Hanging Context. Reading is free and needs no key.

## Start here

- [Developers page](https://hangingcontext.com/developers/): endpoints, examples, rate limits, errors and the version policy
- [Developers page as Markdown](https://hangingcontext.com/developers/index.md)
- [OpenAPI description](https://hangingcontext.com/openapi.json)
- [MCP server](https://hangingcontext.com/mcp): a plain GET returns JSON that explains how to connect
- [Ask endpoint](https://hangingcontext.com/ask): a plain GET returns JSON that explains how to call it

## Endpoints

- GET [/editions/latest.json](https://hangingcontext.com/editions/latest.json): Get the latest stories
- GET [/n/{topic}/index.json](https://hangingcontext.com/n/{topic}/index.json): Get the stories of one topic
- GET [/stories/{date}/{slug}/index.json](https://hangingcontext.com/stories/{date}/{slug}/index.json): Get one story as JSON
- GET [/stories/{date}/{slug}/index.md](https://hangingcontext.com/stories/{date}/{slug}/index.md): Get one story as Markdown
- GET [/roundups/index.json](https://hangingcontext.com/roundups/index.json): List the roundups
- GET [/ask](https://hangingcontext.com/ask): Ask a question (GET)
- POST [/ask](https://hangingcontext.com/ask): Ask a question (POST)
- GET [/editions/feed.json](https://hangingcontext.com/editions/feed.json): Get the JSON Feed
- GET [/editions/feed.xml](https://hangingcontext.com/editions/feed.xml): Get the RSS feed
- GET [/editions/atom.xml](https://hangingcontext.com/editions/atom.xml): Get the Atom feed
- GET [/.well-known/reuse.json](https://hangingcontext.com/.well-known/reuse.json): Get the reuse terms
- GET [/mcp](https://hangingcontext.com/mcp): Get the MCP connection details
- POST [/mcp](https://hangingcontext.com/mcp): Send an MCP JSON-RPC message

## Rules

- No key, account or OAuth is needed.
- The limit is 60 calls per 60 seconds per IP address for /ask and MCP tool calls.
- Errors are JSON with the fields error, message and next_step.
- Version: Breaking changes ship as a new version. We announce them at least 90 days ahead with Deprecation and Sunset response headers on the old version, and on the /developers page.

## Read the rest

- [Main llms.txt](https://hangingcontext.com/llms.txt)
- [For agents llms.txt](https://hangingcontext.com/for-agents/llms.txt)
- [agents.md](https://hangingcontext.com/agents.md)
- [Agent skill and plugin on GitHub](https://github.com/Synorb/hanging-context)
- [Reuse terms](https://hangingcontext.com/terms/reuse/)