Borrowing it
Nothing to install: this file belongs to stfade/moth. 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/stfade/moth/main/AGENTS.mdgit clone --depth 1 https://github.com/stfade/mothWrote 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/stfade/moth/agents-md)<a href="https://agentmods.dev/instructions/stfade/moth/agents-md"><img src="https://agentmods.dev/badge/instructions/stfade/moth/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/stfade/moth/agents-md"><img src="https://agentmods.dev/badge/instructions/stfade/moth/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 | $0.01253 | $0.01253 |
| Opus 5.5 | $0.00501 | $0.00501 |
| Sonnet 5.5 | $0.00251 | $0.00251 |
| Haiku 4.5 | $0.00125 | $0.00125 |
Grade A, and why
moth 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 — 196 lines — stays where its author put it; the contents beside it link to each section on GitHub.
AGENTS.md – Moth
Overview
- TypeScript/Node.js MCP server.
- Main goal: receive an error log through MCP and return a structured, source-backed fix brief.
- Moth v0.1 is a lightweight Skill + MCP plugin for validating project-local bug-fix workflows.
- Keep the MVP small, explicit, and deterministic.
- Do not build autonomous code editing, crawlers, vector DB, sandbox, backend service, or background watchers unless requested.
- Moth is read-only by default.
Environment
- Package manager:
pnpm. - Local dev should start the MCP server.
- Prefer simple scripts:
pnpm devpnpm buildpnpm test
- Use environment variables only for optional providers.
- Never require external services for the first working MVP.
- Local project memory should use:
.moth/fix-memory.jsonl
Testing
-
Unit tests should cover:
- secret redaction
- error normalization
- fingerprint generation
- stack/framework detection
- local memory read/write
- prior successful fix matching
- prior failed fix avoidance
- fix brief generation
- MCP tool input/output schema
-
A commit must leave the test suite green.
-
Use fixtures for common errors:
- Next.js
- TypeScript
- Prisma
- Vite
- ESLint
Coding Conventions
- Use TypeScript.
- Prefer simple, readable, deterministic code.
- File names are kebab-case.
- Keep modules small and focused.
- Avoid premature abstractions.
- Prefer explicit schemas for MCP tool inputs and outputs.
- Do not hide important behavior behind agents or implicit side effects.
- Suggested structure:
src/
server.ts
tools/
analyze-error.ts
remember-fix-result.ts
core/
redact.ts
normalize-error.ts
fingerprint.ts
detect-stack.ts
memory-store.ts
match-memory.ts
build-brief.ts
schemas/
analyze-error.schema.ts
remember-fix-result.schema.ts
fix-brief.schema.ts
fix-memory-record.schema.ts
skills/
moth-debug-first-fix.md
moth-source-backed-research.md
moth-verify-fix.md
fixtures/
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 · 196 lines · 1,253 tokens per session scan A 2928ff5c7fee
moth AGENTS.md is an instructions file published in the GitHub repository stfade/moth (2 stars, last pushed 5mo ago), licensed MIT. It adds 1,253 tokens to every session, about $0.0050 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.
deepseek-harness AGENTS.md
AGENTS.md instructions for deepseek-ai/deepseek-harness, covering agents.md, pre-stable apis and released session data, repository layout, commands and host sandbox failures.
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).