Borrowing it
Nothing to install: this file belongs to fantasyce/agent-runtime-proof. 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/fantasyce/agent-runtime-proof/main/AGENTS.mdgit clone --depth 1 https://github.com/fantasyce/agent-runtime-proofWrote 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/fantasyce/agent-runtime-proof/agents-md)<a href="https://agentmods.dev/instructions/fantasyce/agent-runtime-proof/agents-md"><img src="https://agentmods.dev/badge/instructions/fantasyce/agent-runtime-proof/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/fantasyce/agent-runtime-proof/agents-md"><img src="https://agentmods.dev/badge/instructions/fantasyce/agent-runtime-proof/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 | $0.00380 | $0.00380 |
| Opus 5.5 | $0.00152 | $0.00152 |
| Sonnet 5.5 | $0.00076 | $0.00076 |
| Haiku 4.5 | $0.00038 | $0.00038 |
Grade A, and why
agent-runtime-proof 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.
What it actually says
Agent Runtime Proof Project Rules
Product Boundary
Agent Runtime Proof is an independent open-source Across ecosystem project. It must build and run without Across Agents Assistant, Across Context, Across Orchestrator, or Across Autopilot.
Do not place its implementation in any of those four repositories. Do not make it a fourth first-party managed AAA plugin. AAA may consume it only through the same generic local interface available to other Agent hosts.
Version 1 Scope
- Local Agent runtimes only.
- CLI and local
stdioMCP are the public interfaces. - A launch Witness may proxy a local child process byte-for-byte.
- macOS and Windows require real-machine acceptance; Linux core, CLI, and MCP acceptance may run in local Docker.
- Runtime and host inspection is read-only. The tool must not kill processes, rewrite Agent configuration, delete host caches, upgrade plugins, or repair installations.
- No HTTP/SSE server, remote Agent support, cloud control plane, telemetry, multi-tenancy, or remote attestation in v1.
Evidence Rules
- Keep verdict and proof strength separate.
- Never claim loaded-memory proof from an on-disk digest.
- Bind process evidence to PID plus creation time to prevent PID reuse.
- Treat permission denial, races, scan limits, and incomplete evidence as an explicit indeterminate result, not a pass.
- Do not persist raw environment values, complete command lines, credentials, transcripts, file contents, or unredacted home paths.
- Tests must use task-owned roots and leave no process or filesystem residue.
Authoritative Design
docs/architecture-development-acceptance.md defines the architecture,
contracts, development phases, platform matrix, and GO/NO-GO release gates.
Scope or proof-semantics changes require updating that document and its tests.
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 First seen · 42 lines · 380 tokens per session scan A 3539848fe7d1
agent-runtime-proof AGENTS.md is an instructions file published in the GitHub repository fantasyce/agent-runtime-proof (1 stars, last pushed 1mo ago), licensed Apache-2.0. It adds 380 tokens to every session, about $0.0015 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
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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.
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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.
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Model-specific prompt authoring and registry guidelines.