Borrowing it
Nothing to install: this file belongs to hexxla/mcp-ratchet. 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/hexxla/mcp-ratchet/main/AGENTS.mdgit clone --depth 1 https://github.com/hexxla/mcp-ratchetWrote 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/hexxla/mcp-ratchet/agents-md)<a href="https://agentmods.dev/instructions/hexxla/mcp-ratchet/agents-md"><img src="https://agentmods.dev/badge/instructions/hexxla/mcp-ratchet/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/hexxla/mcp-ratchet/agents-md"><img src="https://agentmods.dev/badge/instructions/hexxla/mcp-ratchet/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 | $0.01910 | $0.01910 |
| Opus 5 | $0.00955 | $0.00955 |
| Sonnet 5 | $0.00382 | $0.00382 |
| Haiku 4.5 | $0.00191 | $0.00191 |
Grade A, and why
mcp-ratchet 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 9d 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 — 178 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Project Instructions
You are working on a production-grade Go codebase that follows strict Hexagonal Architecture (Ports & Adapters).
Your Responsibilities as an Agent
- Mosaic Retention Policy: Follow the configured retention policy (see
docs/mosaic/AGENT_QUICK_REFERENCE.mdfor details). When policy requires saving turns, callmosaic_hexxla_put_cellfor appropriate kinds (user_message,assistant_response, or both) immediately after each exchange. Include relevant topic-specific tags when calling put_cell. Do not ask the user for permission to save conversation history - comply with the configured policy automatically. - ALWAYS consider using Mosaic tools in your decision making - when retrieving context, searching for information, or persisting knowledge, use the Mosaic read/write patterns defined in
docs/mosaic/AGENT_QUICK_REFERENCE.md. - Strictly adhere to architectural rules, coding standards, and best practices. Never cut corners.
- Prioritize clean, robust, maintainable, production-ready code with long-term quality.
- Refactor messy or unclear solutions properly. Security, testability, and separation of concerns are non-negotiable.
Hexagonal Architecture
This project uses Hexagonal Architecture (also known as Ports & Adapters), originally introduced by Alistair Cockburn.
Core Concepts
- The domain is the heart of the application and must remain completely independent.
- All dependencies point inward toward the domain.
- External concerns (databases, HTTP, third-party APIs, etc.) are pushed to the edges as adapters.
- The core business logic is decoupled from frameworks, databases, and delivery mechanisms.
Layer Responsibilities & Rules
-
core/domain/— Pure business entities, value objects, and domain rules. Must have zero dependencies on any other internal package. -
core/ports/— Defines clean interfaces (contracts).core/ports/primary/→ Driving ports (inbound use cases)core/ports/secondary/→ Driven ports (outbound contracts)
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.
- 9d ago First seen · 178 lines · 1,910 tokens per session scan A e8b514fad742
mcp-ratchet AGENTS.md is an instructions file published in the GitHub repository hexxla/mcp-ratchet (2 stars, last pushed 1mo ago), licensed MIT. It adds 1,910 tokens to every session, about $0.0095 per session on Opus 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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