Borrowing it
Nothing to install: this file belongs to Hugegreencandle/xahau-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/Hugegreencandle/xahau-mcp/main/CLAUDE.mdgit clone --depth 1 https://github.com/Hugegreencandle/xahau-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/hugegreencandle/xahau-mcp/claude-md)<a href="https://agentmods.dev/instructions/hugegreencandle/xahau-mcp/claude-md"><img src="https://agentmods.dev/badge/instructions/hugegreencandle/xahau-mcp/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/hugegreencandle/xahau-mcp/claude-md"><img src="https://agentmods.dev/badge/instructions/hugegreencandle/xahau-mcp/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 | $0.00716 | $0.00716 |
| Opus 5 | $0.00358 | $0.00358 |
| Sonnet 5 | $0.00143 | $0.00143 |
| Haiku 4.5 | $0.00072 | $0.00072 |
Grade A, and why
xahau-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 12d 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 — 47 lines — stays where its author put it; the contents beside it link to each section on GitHub.
xahau-mcp — agent guide
TypeScript MCP server that simulates Xahau transactions before they're signed — runs the real hook bytecode against live (or historical) ledger state in a local VM. Second leg of the trifecta: xahc (write) → xahau-mcp (simulate one) → xahc-prover (prove all).
Reference docs (read before Xahau protocol questions — don't guess from training)
- Ground truth for VM/transactor behaviour:
Xahau/xahaud(Transactor.cpp,applyHook.cpp) — host fns, return codes, sfcodes, SetHook, the TSH weak/strong table (which maps directly ontosimulate.tsTSH logic), amendments.docs/FIDELITY.mdrecords the VM's measured agreement.
What it does
The flagship tool is simulate_transaction — a pre-sign flight simulator: takes an UNSIGNED tx,
runs every hook it would trigger (originator + TSH chain) as real WASM against live state, and
predicts accept/rollback + emitted txns + static preflight, honestly labeling what's out of scope
(it's the hook layer + static engine checks, NOT full consensus).
Layout (src/)
index.ts(stdio MCP) /http.ts(HTTP) — entry points.simulate.ts— the simulator + TSH table + transactor-lite composition.sandbox.ts/runhook-worker.ts/isolated.ts— the hook VM.codec.ts/defs.ts/hookapi.ts/keylet.ts— serialization + hook API.rpc.ts— Xahau RPC.fidelity.ts— context reconstruction.emitted.ts,analyzer.ts,transactorLite.ts,scam.ts, plus feature modules (evernode, governance, rewards, quantum).
Build / test / run
npm run build # tsc -> dist/
npm test # vitest run (run after any change; tests/regression.test.ts is the fidelity gate)
npm run start # stdio MCP (dist/index.js)
npm run http # HTTP server (dist/http.js)
npm run fetch:all # refresh server_definitions + hook-api from a live node (run when protocol moves)
validate_termination.cjsis a one-off testnet script (usesxrpl-accountlib+xrpl-client, holds a throwaway faucet secret — keep it untracked).
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.
- 12d ago First seen · 47 lines · 716 tokens per session scan A f34cfff40d8d
xahau-mcp CLAUDE.md is an instructions file published in the GitHub repository Hugegreencandle/xahau-mcp (6 stars, last pushed 22d ago), licensed MIT. It adds 716 tokens to every session, about $0.0036 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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