Borrowing it
Nothing to install: this file belongs to peter-gy/anywidget-mcp. 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/peter-gy/anywidget-mcp/main/AGENTS.mdgit clone --depth 1 https://github.com/peter-gy/anywidget-mcpWrote 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/peter-gy/anywidget-mcp/agents-md)<a href="https://agentmods.dev/instructions/peter-gy/anywidget-mcp/agents-md"><img src="https://agentmods.dev/badge/instructions/peter-gy/anywidget-mcp/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/peter-gy/anywidget-mcp/agents-md"><img src="https://agentmods.dev/badge/instructions/peter-gy/anywidget-mcp/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 | $0.02990 | $0.02990 |
| Opus 5.5 | $0.01196 | $0.01196 |
| Sonnet 5.5 | $0.00598 | $0.00598 |
| Haiku 4.5 | $0.00299 | $0.00299 |
Grade A, and why
anywidget-mcp 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 1mo 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 — 248 lines — stays where its author put it; the contents beside it link to each section on GitHub.
anywidget-mcp
anywidget-mcp is a uv and pnpm workspace for exposing AnyWidget classes and
factories as interactive MCP Apps. Python owns registration, widget sessions,
traitlets, and model-visible state. The browser app owns AnyWidget rendering
and MCP host integration. Preserve that split.
Read this file before changing the repository.
Commands
| Purpose | Command | Expected result |
|---|---|---|
| Install Python | uv sync --all-packages --group dev |
Workspace and development dependencies resolve |
| Install JavaScript | pnpm install --frozen-lockfile |
Vite+ workspace installs from pnpm-lock.yaml |
| Check JavaScript | pnpm check |
Formatting, linting, and type checks pass |
| Test browser app | pnpm test |
Vite+ tests pass |
| Install test browsers | pnpm --filter @anywidget-mcp/e2e install-browser |
Chromium, Firefox, and WebKit are installed |
| Test integration | pnpm e2e |
Packaged app builds and Playwright tests pass in three browsers |
| Test Python | pnpm --filter @anywidget-mcp/python build && uv run --package anywidget-mcp pytest -q packages/anywidget-mcp/tests |
Browser resource builds, then Python contract tests pass |
| Build browser assets | pnpm build |
Package builds and the single-file app are produced |
| Build distribution | make package |
Wheel, sdist, wheel-from-sdist, import, and CLI checks pass |
| Full handoff gate | make check |
Every local gate passes |
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.
- 1mo ago Changed · +8 lines · +117 tokens per session 246b26fded36
- 1mo ago Changed · +8 lines · +127 tokens per session 051f9d06f9d3
- 2mo ago Changed · +20 lines · +375 tokens per session 03f75ffeb423
- 2mo ago First seen · 212 lines · 2,371 tokens per session scan A 1f39e316a768
anywidget-mcp AGENTS.md is an instructions file published in the GitHub repository peter-gy/anywidget-mcp (7 stars, last pushed 1mo ago), licensed MIT. It adds 2,990 tokens to every session, about $0.0120 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.
anywidget-mcp AGENTS.md compared with instructions from other repositories
| Mod | Type | Stars | Last push | Licence | Scan | Tokens | Works with |
|---|---|---|---|---|---|---|---|
| anywidget-mcp AGENTS.mdpeter-gy/anywidget-mcp | Instructions file | 7 | 1mo ago | MIT | A | 2,990 | Codex, OpenCode |
| vscode buildNext.instructions.mdmicrosoft/vscode | Instructions file | 195k | today | MIT | A | 9,719 | GitHub Copilot |
| next.js AGENTS.mdvercel/next.js | Instructions file | 143k | yesterday | MIT | A | 7,461 | Codex, OpenCode |
| langchain AGENTS.mdlangchain-ai/langchain | Instructions file | 149k | today | MIT | A | 4,680 | Codex, OpenCode |
| vscode oss-third-party-notices.instructions.mdmicrosoft/vscode | Instructions file | 195k | today | MIT | A | 5,516 | GitHub Copilot |
| vscode copilot-instructions.mdmicrosoft/vscode | Instructions file | 195k | today | MIT | A | 3,093 | GitHub Copilot |
| deepseek-harness AGENTS.mddeepseek-ai/deepseek-harness | Instructions file | 275k | 2d ago | MIT | A | 4,313 | Codex, OpenCode |