Borrowing it
Nothing to install: this file belongs to Creed-Space/METTLE. 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/Creed-Space/METTLE/main/CLAUDE.mdgit clone --depth 1 https://github.com/Creed-Space/METTLEWrote 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/creed-space/mettle/claude-md)<a href="https://agentmods.dev/instructions/creed-space/mettle/claude-md"><img src="https://agentmods.dev/badge/instructions/creed-space/mettle/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/creed-space/mettle/claude-md"><img src="https://agentmods.dev/badge/instructions/creed-space/mettle/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 | $0.01992 | $0.01992 |
| Opus 5.5 | $0.00797 | $0.00797 |
| Sonnet 5.5 | $0.00398 | $0.00398 |
| Haiku 4.5 | $0.00199 | $0.00199 |
Grade A, and why
METTLE 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 22d 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 — 187 lines — stays where its author put it; the contents beside it link to each section on GitHub.
CLAUDE.md: METTLE
Project boundary
METTLE is an experimental reverse CAPTCHA with twelve registered challenge suites. It measures performance during a named policy session and may issue a signed, time-limited credential. A result does not establish identity, non-human substrate, consciousness, autonomy, safety, governance, personhood, moral status, or operator trustworthiness.
Preserve the distinction between:
- measurement during one session;
- an inference supported by that measurement;
- an ethical interpretation;
- a relying party's independent authorization decision.
Read first
docs/DOCUMENTATION_MAP.md: authority, reading order, and historical boundaries.docs/SYSTEM_ARCHITECTURE.md: current system map, invariants, and proposed target.docs/AGENTIC_SYSTEM_ROADMAP.md: sole active forward plan.- The source and tests for the surface being changed.
docs/AGENT_CONTROL_PLANE.md is target design, not implemented behavior. Dated
audits, remediation reports, and _contprompts/ are historical unless Nell opens a
new bounded execution task.
Current implementation map
main.py FastAPI composition root, quick API, operational middleware, static routes
config.py main service settings and fail-closed production configuration
database.py PostgreSQL models, migrations, retention, and durable records
mettle/challenge_adapter.py twelve-suite registry, generators, and evaluators
mettle/challenger.py quick challenge generation
mettle/verifier.py quick challenge verification and result computation
mettle/api_models.py authenticated API request and response models
mettle/router.py authenticated suite, session, result, status, and presentation routes
mettle/session_manager.py Redis-backed authenticated session authority
mettle/legacy_session_store.py Redis-backed quick-session authority
mettle/mcp_server.py packaged eleven-tool MCP adapter
mettle/mcp_contract.py MCP control-v1 schemas, snapshots, actions, receipts, and errors
mettle/_http.py bounded authenticated Streamable HTTP MCP transport
mettle/cli.py unsigned local research CLI
mettle/vcp.py credential construction, verification, status, and tier policy
mettle/signing.py Ed25519 issuer key handling
mettle/presence.py holder-bound submission and presentation protocol
mettle/holder*.py policy-constrained holder service and persistence
static/ only canonical production frontend, including WebMCP
docs/ current contracts, assurance, target design, operations, and historical design
scripts/ build, validation, release, deployment, and bounded trial entry points
tests/ unit, integration, resilience, security, browser, and contract tests
_wiki/ derived provenance-linked retrieval knowledge
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.
- 22d ago Changed · +5 lines · +57 tokens per session 8012512b1e02
- 1mo ago Changed · +154 lines · +1,644 tokens per session b0afc8ee6a3c
- 2mo ago First seen · 28 lines · 291 tokens per session scan A 8fc0b6e546ed
METTLE CLAUDE.md is an instructions file published in the GitHub repository Creed-Space/METTLE (0 stars, last pushed 5d ago), licensed Apache-2.0. It adds 1,992 tokens to every session, about $0.0080 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.
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).
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.