Borrowing it
Nothing to install: this file belongs to MachineWisdomAI/fava-trails. 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/MachineWisdomAI/fava-trails/main/CLAUDE.mdgit clone --depth 1 https://github.com/MachineWisdomAI/fava-trailsWrote 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/machinewisdomai/fava-trails/claude-md)<a href="https://agentmods.dev/instructions/machinewisdomai/fava-trails/claude-md"><img src="https://agentmods.dev/badge/instructions/machinewisdomai/fava-trails/claude-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/machinewisdomai/fava-trails/claude-md"><img src="https://agentmods.dev/badge/instructions/machinewisdomai/fava-trails/claude-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 | $0.00195 | $0.00195 |
| Opus 5.5 | $0.00078 | $0.00078 |
| Sonnet 5.5 | $0.00039 | $0.00039 |
| Haiku 4.5 | $0.00019 | $0.00019 |
Grade A, and why
fava-trails CLAUDE.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 13d 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
FAVA Trails: Claude Code adapter
This file points to the owning documents. It adds no rules of its own.
- Using the MCP tools in a session: follow AGENTS_USAGE_INSTRUCTIONS.md. Tool parameters and the thought lifecycle are in AGENTS.md.
- Before changing this repository's source (branches, worktrees, tests, version bump, release): read CONTRIBUTING.md. In short: never commit directly to
main, and treat any installed or vendored FAVA Trails runtime as read-only. - Install, reviewer choice, client registration: AGENTS_SETUP_INSTRUCTIONS.md and README.md.
- Never create or edit application
.envfiles for FAVA Trails scope; see the scope section of the usage instructions.
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.
- 13d ago Changed · -28 lines · -100 tokens per session d4399a54f04f
- 2mo ago First seen · 37 lines · 295 tokens per session scan A 0e953e12dd56
fava-trails CLAUDE.md is an instructions file published in the GitHub repository MachineWisdomAI/fava-trails (26 stars, last pushed yesterday), licensed Apache-2.0. It adds 195 tokens to every session, about $0.0008 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 2026-08-30.
fava-trails CLAUDE.md compared with instructions from other repositories
| Mod | Type | Stars | Last push | Licence | Scan | Tokens | Works with |
|---|---|---|---|---|---|---|---|
| fava-trails CLAUDE.mdMachineWisdomAI/fava-trails | Instructions file | 26 | yesterday | Apache-2.0 | A | 195 | Claude Code |
| vscode buildNext.instructions.mdmicrosoft/vscode | Instructions file | 195k | yesterday | MIT | A | 9,719 | GitHub Copilot |
| next.js AGENTS.mdvercel/next.js | Instructions file | 143k | yesterday | MIT | A | 7,461 | Codex, OpenCode |
| langchain AGENTS.mdlangchain-ai/langchain | Instructions file | 149k | yesterday | MIT | A | 4,680 | Codex, OpenCode |
| vscode oss-third-party-notices.instructions.mdmicrosoft/vscode | Instructions file | 195k | yesterday | MIT | A | 5,516 | GitHub Copilot |
| vscode copilot-instructions.mdmicrosoft/vscode | Instructions file | 195k | yesterday | MIT | A | 3,093 | GitHub Copilot |
| deepseek-harness AGENTS.mddeepseek-ai/deepseek-harness | Instructions file | 274k | 2d ago | MIT | A | 4,313 | Codex, OpenCode |