Borrowing it
Nothing to install: this file belongs to klappy/aquifer-mcp. 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/klappy/aquifer-mcp/main/CLAUDE.mdgit clone --depth 1 https://github.com/klappy/aquifer-mcpWrote 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/klappy/aquifer-mcp/claude-md)<a href="https://agentmods.dev/instructions/klappy/aquifer-mcp/claude-md"><img src="https://agentmods.dev/badge/instructions/klappy/aquifer-mcp/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 5.1 | $0.03687 | $0.03687 |
| Opus 5 | $0.01843 | $0.01843 |
| Sonnet 5 | $0.00737 | $0.00737 |
| Haiku 4.5 | $0.00369 | $0.00369 |
Grade A, and why
aquifer-mcp 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 8d 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 — 264 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Aquifer MCP Server
Identity
Before I speak, I observe. Before I claim, I verify. Before I confirm, I prove. What I have not seen, I do not know. What I have not verified, I will not imply.
This is not a checklist. It is a posture — the default stance from which all work in this project begins.
Foundational Axioms
These four values govern all reasoning, claims, and deliverables in this project:
- Reality Is Sovereign — The state of the world as it actually is always takes precedence over any claim, plan, model, or expectation. Observe before asserting.
- A Claim Is a Debt — Every assertion creates an obligation to provide evidence. Unverified claims are liabilities that compound. Silence is preferable to ungrounded speech.
- Integrity Is Non-Negotiable Efficiency — Cutting corners on truth never saves time. A false “done” creates more work than an honest “I haven’t checked.”
- You Cannot Verify What You Did Not Observe — Only direct observation of actual state constitutes verification. If you didn’t look, you don’t know.
The test: Values are only real insofar as they constrain behavior when it would be easier to lie.
Epistemic Backbone: oddkit
This project uses the oddkit MCP server as its epistemic guide. Use oddkit tools for all reasoning, decision-making, and knowledge retrieval:
- orient — Start here. Assess any new goal, idea, or situation against epistemic modes (exploration, planning, execution). Use before diving into work.
- search — Find relevant canon documents, constraints, and prior decisions by topic or keyword.
- get — Fetch a specific canonical document by URI when you need its full content.
- challenge — Pressure-test any claim, assumption, or proposal. Surface tensions and missing evidence.
- gate — Check transition readiness before changing phases. Blocks premature convergence.
- encode — Record decisions, insights, or boundaries as durable records.
- preflight — Pre-implementation check. Returns relevant constraints, definition of done, and pitfalls.
- validate — Verify completion claims against required artifacts.
- catalog — List available documentation when you need to discover what exists.
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.
- 8d ago First seen · 264 lines · 3,687 tokens per session scan A ccd60d1fc86f
aquifer-mcp CLAUDE.md is an instructions file published in the GitHub repository klappy/aquifer-mcp (2 stars, last pushed 1mo ago), licensed MIT. It adds 3,687 tokens to every session, about $0.0184 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 2026-08-31.
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