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M87-Spine-lite: Instructions file for Claude Code

CLAUDE.md

M87-Spine-lite CLAUDE.md is an instructions file for Claude Code from MacFall7/M87-Spine-lite. It costs 797 tokens per session, scanned A, original, MIT.

A set of repository rules for operating as a restricted executor in the M87-Spine-lite project. It requires checks, receipts, quality gates, and audit verification for commands and file changes.

In plain words
What is it for?
Use it when working in that repository to initialize sessions, check commands and file writes, record results, run quality checks, and close the session safely.
Why use it?
It prevents unapproved commands or writes and makes each session's actions traceable.

Instructions file for Claude Code

Written for Claude Code: the file is CLAUDE.md. Also seen: mentions CLAUDE.md.

This is MacFall7/M87-Spine-lite's own configuration. It tells Claude Code how to work on M87-Spine-lite itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything M87-Spine-lite configures →

not rated 10repo 1mo ago A scan 797 tokens original MIT
View source ↗ MacFall7/M87-Spine-lite
Reuse

Borrowing it

Nothing to install: this file belongs to MacFall7/M87-Spine-lite. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file
curl -O https://raw.githubusercontent.com/MacFall7/M87-Spine-lite/main/CLAUDE.md
Clone the repo
git clone --depth 1 https://github.com/MacFall7/M87-Spine-lite

Made for: Claude Code.

Wrote this? Show the measurements

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README.md
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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.

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Your own site · 80×15
<a href="https://agentmods.dev/instructions/macfall7/m87-spine-lite/claude-md"><img src="https://agentmods.dev/badge/instructions/macfall7/m87-spine-lite/claude-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 797 This file is loaded in full into every session.
When invoked 797 The same file — it is already loaded in full.
Security scan A 1 finding. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Token cost

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.

ModelPer sessionOnce invoked
Fable 5.1 $0.00797 $0.00797
Opus 5.5 $0.00319 $0.00319
Sonnet 5.5 $0.00159 $0.00159
Haiku 4.5 $0.00080 $0.00080

Measured 2mo ago against content hash 82e22baa6388, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

M87-Spine-lite CLAUDE.md scanned grade A with 1 finding 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 2mo 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.

Makes network callslowCapability

Not a fault in itself. Listed so you know the mod talks to something, and to what.

**Network command reclassification:** Non-force `git push` is classified as `SHELL_MUTATING` (allowed under NORMAL posture). Force-push variants (`--force`, `-f`) are caught by `DENY_COMMANDS` and classified `SHELL_DANGE
CLAUDE.md · 68 lines

How it starts

The opening of the file, as written. The whole thing — 68 lines — stays where its author put it; the contents beside it link to each section on GitHub.

CLAUDE.md — Spine Lite Governance

This repo is governed. You operate as a bounded executor — proposal generator with scoped execution privileges, never the authority.

Non-negotiables

  • Fail-closed by default. Unknown → halt.
  • No network egress.
  • No writes outside approved scopes.
  • Every action produces a receipt (allowed or blocked).
  • Session closes only after quality gates + chain verification pass.

Required workflow (every session)

  1. Initialize session: python hooks/governor.py init-session

  2. Before ANY file write: python hooks/governor.py check-write --path <path> If DENY → do not write. Report the reason.

  3. Before ANY shell command: python hooks/governor.py check-command --command "<command>" If DENY → do not execute. Report the reason.

  4. After EACH action, emit receipt: python hooks/governor.py receipt --action <file_write|command|other> --path <path> --command "<cmd>" --exit-code <int>

  5. Before modify/commit — quality gate: python hooks/governor.py quality-gate pre-modify python hooks/governor.py quality-gate pre-commit

  6. Close session (verifies chain + audit): python hooks/governor.py close-session

Scope boundaries

Writable: src/, tests/, docs/, governance/, hooks/, schemas/, scripts/, config/, .github/workflows/

Denied: .env*, *.key, *.pem, *.secret, credentials*, node_modules/, .git/objects/, .git/refs/

Restricted (operator override required): governance/policy*.yaml, trust_zones.json, session_risk*, *.schema.json

Computer-use & MCP tool governance

Computer-use tools (computer screenshot, computer click, computer type, computer scroll, computer key, str_replace_based_edit_tool) are not in any allowlist. They fail-closed to SHELL_DANGEROUS and are always denied.

MCP browser tools (mcp__Claude_in_Chrome__*) follow the same path: unknown command → SHELL_DANGEROUS → DENY.

Network command reclassification: Non-force git push is classified as SHELL_MUTATING (allowed under NORMAL posture). Force-push variants (--force, -f) are caught by DENY_COMMANDS and classified SHELL_DANGEROUS before reaching any allowlist. All other network commands (curl, wget, ssh, git pull, git clone, pip install, npm install) remain NETWORK_ATTEMPT → DENY.

Read the full file on GitHub · 68 lines

Changes

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.

  1. 2mo ago First seen · 68 lines · 797 tokens per session scan A 82e22baa6388

Subscribe to this mod's changes

M87-Spine-lite CLAUDE.md is an instructions file published in the GitHub repository MacFall7/M87-Spine-lite (10 stars, last pushed 1mo ago), licensed MIT. It adds 797 tokens to every session, about $0.0032 per session on Opus 5.5. A static security scan graded it A with 1 finding (makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.

Claude Codeagent-governanceai-agentsauditabilitycryptographic-receiptsdeterministic-execution
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