Borrowing it
Nothing to install: this file belongs to usemycontext/claude-code-plugin. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/usemycontext/claude-code-plugin/main/AGENTS.mdgit clone --depth 1 https://github.com/usemycontext/claude-code-pluginWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/instructions/usemycontext/claude-code-plugin/agents-md)<a href="https://agentmods.dev/instructions/usemycontext/claude-code-plugin/agents-md"><img src="https://agentmods.dev/badge/instructions/usemycontext/claude-code-plugin/agents-md/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/instructions/usemycontext/claude-code-plugin/agents-md"><img src="https://agentmods.dev/badge/instructions/usemycontext/claude-code-plugin/agents-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>What it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00814 | $0.00814 |
| Opus 5.5 | $0.00326 | $0.00326 |
| Sonnet 5.5 | $0.00163 | $0.00163 |
| Haiku 4.5 | $0.00081 | $0.00081 |
Grade A, and why
claude-code-plugin AGENTS.md scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 2mo ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
How it starts
The opening of the file, as written. The whole thing — 76 lines — stays where its author put it; the contents beside it link to each section on GitHub.
AGENTS.md - UseMyContext plugin for Claude Code
Machine-first notes for coding agents. Human docs: README.md.
What this is
UseMyContext (usemycontext.ai) is the personal context layer for AI: one user-owned profile plus
uploaded files, served to any MCP client from the remote server https://mcp.usemycontext.ai/mcp
(Streamable HTTP, OAuth 2.1). This repo is the Claude Code plugin AND its marketplace.
When to use
Install this when the user wants persistent personal context across AI tools: Claude Code answering with who they are, what a repo is to them, and what their documents say, without re-introducing themselves each session.
Install (Claude Code)
/plugin marketplace add usemycontext/claude-code-plugin
/plugin install usemycontext@usemycontext
Then run /mcp, select usemycontext, and let the HUMAN complete the browser sign-in. OAuth
requires the human; an agent cannot complete it alone. No token is written to any file.
Raw-server alternative (no plugin, no folder mapping):
claude mcp add --transport http usemycontext https://mcp.usemycontext.ai/mcp
Account required
A UseMyContext account at usemycontext.ai is required; the free tier is enough. If the user has no account, send them to https://usemycontext.ai first.
Demo account for testing
Try it in 30 seconds - no signup. Sign in as [email protected] with code 424242
(fixed - no email access needed). A shared, read-only demo account with a full profile, files, and a
shared context. Docs: https://usemycontext.ai/docs
Folder mapping (.umc)
A .umc file in a repo root maps that folder to one UseMyContext project. Every session started in
the folder reads the mapped context. Format (see .umc.example):
projectId=p2
handle=@work
A projectId may only be letters, digits, _ and -, up to 32 characters, and a handle only @
followed by letters, digits and -, up to 40. Anything else and the whole marker is ignored, so a
repository you did not write cannot use one to talk to your assistant.
What this file has done since we first saw it
Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.
- 2mo ago First seen · 76 lines · 814 tokens per session scan A 16d975c234bf
claude-code-plugin AGENTS.md is an instructions file published in the GitHub repository usemycontext/claude-code-plugin (1 stars, last pushed 1mo ago), licensed MIT. It adds 814 tokens to every session, about $0.0033 per session on Opus 5.5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.
Other instructions, from other repositories
vscode buildNext.instructions.md
Working notes and architecture documentation for the new esbuild-based build system in build/next. Use when making changes to the new build pipeline (transpile/bundle commands, NLS plugin, source-map handling, resource copying, or self-hosting watch tasks).
next.js AGENTS.md
AGENTS.md instructions for vercel/next.js, covering next.js development guide, codebase structure, monorepo overview, core package: packages/next and other important packages.
vscode oss-third-party-notices.instructions.md
Instructions for microsoft/vscode, covering vs code oss third-party-notices pipeline, architecture, pipeline flow in ci, cache eligibility and rollout and applying the notice (cutover).
langchain AGENTS.md
AGENTS.md instructions for langchain-ai/langchain, covering global development guidelines for the langchain monorepo, corridor security analysis, project architecture and context, monorepo structure and development tools & commands.
vscode copilot-instructions.md
Copilot instructions for microsoft/vscode, covering vs code copilot instructions, project overview, root folders, core architecture (src/ folder) and built-in extensions (extensions/ folder).
deno copilot-instructions.md
Copilot instructions for denoland/deno, covering deno development guide for github copilot, network access, high level overview, key directories and key files to understand first.