Borrowing it
Nothing to install: this file belongs to davidruzicka/mcp4openapi. 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/davidruzicka/mcp4openapi/main/AGENTS.mdgit clone --depth 1 https://github.com/davidruzicka/mcp4openapiWrote 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/davidruzicka/mcp4openapi/agents-md)<a href="https://agentmods.dev/instructions/davidruzicka/mcp4openapi/agents-md"><img src="https://agentmods.dev/badge/instructions/davidruzicka/mcp4openapi/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/davidruzicka/mcp4openapi/agents-md"><img src="https://agentmods.dev/badge/instructions/davidruzicka/mcp4openapi/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 | $0.03850 | $0.03850 |
| Opus 5.5 | $0.01540 | $0.01540 |
| Sonnet 5.5 | $0.00770 | $0.00770 |
| Haiku 4.5 | $0.00385 | $0.00385 |
Grade A, and why
mcp4openapi 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 28d 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 — 300 lines — stays where its author put it; the contents beside it link to each section on GitHub.
AI Coding Agent Guide
Reference canonical sources; never duplicate rules.
Canonical Sources
| File | Purpose | Scope Boundary | Prevails Over / Notes |
|---|---|---|---|
IMPLEMENTATION.md |
Architecture & design decisions | System design, component interactions | Prevails over all except STYLE.md |
docs/PROFILE-GUIDE.md |
Profile creation & validation | Profile structure, tool definitions, best practices | Use for profile-related questions |
src/types/profile.ts |
Profile type definitions | TypeScript interfaces for profiles | Source of truth for profile structure |
profile-schema.json |
JSON Schema for profiles | IDE autocomplete, JSON validation | Must stay in sync with TypeScript types |
src/generated-schemas.ts |
Zod runtime schemas | Runtime validation, parsing | Auto-generated from TypeScript types |
docs/AGENT-OUTPUT-SCHEMAS.md |
Autonomous agent JSON contracts | Agent machine-readable output schemas and examples | Canonical doc for agent structured-output docs |
README.md |
User documentation | Setup, configuration, environment variables | User-facing features & usage |
docs/HTTP-TRANSPORT.md |
HTTP transport details | HTTP transport, sessions, OAuth | Transport-specific configuration |
docs/OAUTH.md |
OAuth 2.0 setup | OAuth authentication flow | OAuth configuration & troubleshooting |
docs/MULTI-AUTH.md |
Multi-auth support | Multiple auth methods with priority | Multi-auth configuration |
src/core/errors.ts |
Error types | Error codes, error handling | Always define new typed error instead of throwing generic one. Use typed errors, never ad-hoc strings |
TODO.md |
Future work & backlog | P1/P2/P3 prioritized tasks | Remove items when implemented |
docs/PROFILE-TEST-GUIDE.md |
Profile testing strategies | Profile test coverage, behavior validation | Use for writing profile 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.
- 28d ago Changed · -3 lines · -143 tokens per session 01dc339fadd1
- 1mo ago First seen · 303 lines · 3,993 tokens per session scan A 5f90a0b990a8
mcp4openapi AGENTS.md is an instructions file published in the GitHub repository davidruzicka/mcp4openapi (0 stars, last pushed 4d ago), licensed MIT. It adds 3,850 tokens to every session, about $0.0154 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.
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