Borrowing it
Nothing to install: this file belongs to jiangkoumo/agenttape. 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/jiangkoumo/agenttape/main/AGENTS.mdgit clone --depth 1 https://github.com/jiangkoumo/agenttapeWrote 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/jiangkoumo/agenttape/agents-md)<a href="https://agentmods.dev/instructions/jiangkoumo/agenttape/agents-md"><img src="https://agentmods.dev/badge/instructions/jiangkoumo/agenttape/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/jiangkoumo/agenttape/agents-md"><img src="https://agentmods.dev/badge/instructions/jiangkoumo/agenttape/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 | $0.00793 | $0.00793 |
| Opus 5.5 | $0.00317 | $0.00317 |
| Sonnet 5.5 | $0.00159 | $0.00159 |
| Haiku 4.5 | $0.00079 | $0.00079 |
Grade A, and why
agenttape 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 — 28 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Prototype Instructions
AgentTape is now a Codex plugin first. Phase 1 is a repository-local installable plugin that records supported Codex hook events, marks explicit tool failures, and emits a redacted version 1 .tape artifact. Keep the .tape format and recorder logic independent from the React prototype so later MCP and CI surfaces can reuse them.
The plugin lives under plugins/agenttape/ and the repo marketplace entry lives at .agents/plugins/marketplace.json. Treat hooks/hooks.json, the bundled recorder scripts, and the capture skill as the Phase 1 product surface. Do not claim bit-exact or complete replay: Codex hosted tools are outside local hook coverage.
Run the local server yourself and open the preview in the browser available to this environment. Do not give the user server-start instructions when you can run it.
Before making substantial visual changes, use the Product Design plugin's get-context skill when the visual source is unclear or no longer matches the current goal. When the user gives durable prototype-specific design feedback, preferences, or decisions, record them in AGENTS.md.
When implementing from a selected generated mock, treat that image as the source of truth for layout, component anatomy, density, spacing, color, typography, visible content, and hierarchy.
The selected AgentTape direction is option 2: a warm-white desktop causal branch canvas. Preserve the three-pane anatomy (run list, execution graph, evidence inspector), the original-failure versus successful-fork comparison, and the core path from failure injection to a saved .tape regression test.
Build app UI in src/. Keep .openai/hosting.json, worker/index.js, scripts/prepare-sites-build.mjs, and tests/sites-worker.test.mjs intact so the same local prototype can be handed to Sites. Before a Sites handoff, run npm run build and npm run test:sites; the build must leave dist/client/index.html, dist/server/index.js, and dist/.openai/hosting.json.
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 · 28 lines · 793 tokens per session scan A ecebccb2f8ea
agenttape AGENTS.md is an instructions file published in the GitHub repository jiangkoumo/agenttape (1 stars, last pushed 2mo ago), licensed MIT. It adds 793 tokens to every session, about $0.0032 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.