Getting it into your agent
One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.
npx agentmods add instructions/last9/mithai/claude-mdgit clone --depth 1 https://github.com/last9/mithaiWrote 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/last9/mithai/claude-md)<a href="https://agentmods.dev/instructions/last9/mithai/claude-md"><img src="https://agentmods.dev/badge/instructions/last9/mithai/claude-md.svg" alt="Measured on agentmods" 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 | $0.01000 | $0.01000 |
| Opus 5 | $0.00500 | $0.00500 |
| Sonnet 5 | $0.00200 | $0.00200 |
| Haiku 4.5 | $0.00100 | $0.00100 |
Grade A, and why
mithai 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 4d 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 — 94 lines — stays where its author put it; the contents beside it link to each section on GitHub.
CLAUDE.md
This file provides guidance to Claude Code (claude.ai/code) when working with code in this repository.
What is mithai
An AI agent framework for infrastructure operations. It gives teams an AI-powered ops agent (backed by Claude) that lives in Slack, Telegram, and a terminal simultaneously. The agent uses skills (plugins) to take actions and Human MCP for human-in-the-loop approval of risky operations.
Common Commands
# Install dependencies (uses uv)
uv pip install -e ".[dev]"
# Run all tests
uv run pytest
# Run a single test file
uv run pytest tests/test_engine_images.py
# Run a single test by name
uv run pytest tests/test_tool_router.py -k "test_route_calls_handler"
# Lint
uv run ruff check src/ tests/
# Format
uv run ruff format src/ tests/
# Build native binary
make build-binary
Architecture
Core Loop
Adapter (Slack/Telegram/CLI) → Engine → LLM (Claude API)
↓ ↓
ToolRouter Tool calls
↓ (skill__tool namespacing)
Skill handler or MCP server
↓
HumanMCP (approve/confirm/auto)
Engine (src/mithai/core/engine.py) — Central orchestrator. Builds system prompt from skill prompts, runs the LLM tool-use loop with Human MCP checks. Adapter-agnostic: the adapter is passed per-call so one engine can serve multiple adapters.
ToolRouter (src/mithai/core/tool_router.py) — Namespaces tools as skill_name__tool_name (double underscore separator). Routes LLM tool calls back to the correct skill handler or MCP server. Enforces allowed_tools for multi-agent mode.
Adapters (src/mithai/adapters/) — Platform-specific message transport. All extend Adapter base class. IncomingMessage and OutgoingMessage are platform-agnostic dataclasses.
HumanMCP (src/mithai/human/mcp.py) — Human-in-the-loop protocol. Tools declare their level: None (auto), "approve", "confirm", or "dynamic" (resolved at runtime by skill's resolve_human() function). Config overrides in config.yaml can escalate or de-escalate.
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.
- 4d ago First seen · 94 lines · 1,000 tokens per session scan A 9ba0d10000df
mithai CLAUDE.md is an instructions file published in the GitHub repository last9/mithai (18 stars, last pushed 6d ago), licensed Apache-2.0. It adds 1,000 tokens to every session, about $0.0050 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 2026-08-30.
Other instructions, from other repositories
actors CLAUDE.md
Claude Code instructions for rivet-dev/actors, covering claude.md, terminology, commands, build + test and build.
vibedgames AGENTS.md
AGENTS.md instructions for kyh/vibedgames, covering agents.md, quickstart (headless), environment, seeded logins and a real session cookie, for handing to a browser context.
vibedgames CLAUDE.md
Claude Code instructions for kyh/vibedgames, covering agent instructions, agent-driven development, what this is, product & business context and key architectural decisions.
liveblocks AGENTS.md
AGENTS.md instructions for liveblocks/liveblocks, covering project structure, bash commands, code style, dependencies and code quality.
liveblocks CLAUDE.md
Claude Code instructions for liveblocks/liveblocks, a project described as: Realtime infrastructure for multiplayer apps and agents.
air-jam AGENTS.md
Instructions for vucinatim/air-jam, covering agent contract, mission, ultimate vision, core principles and development standards.