Borrowing it
Nothing to install: this file belongs to Mahesvannan/tx402. 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/Mahesvannan/tx402/master/CLAUDE.mdgit clone --depth 1 https://github.com/Mahesvannan/tx402Wrote 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/mahesvannan/tx402/claude-md)<a href="https://agentmods.dev/instructions/mahesvannan/tx402/claude-md"><img src="https://agentmods.dev/badge/instructions/mahesvannan/tx402/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 | $0.03162 | $0.03162 |
| Opus 5 | $0.01581 | $0.01581 |
| Sonnet 5 | $0.00632 | $0.00632 |
| Haiku 4.5 | $0.00316 | $0.00316 |
Grade A, and why
tx402 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 5d 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 — 348 lines — stays where its author put it; the contents beside it link to each section on GitHub.
tx402 Maintainer Notes
Guidance for humans and coding agents working in this repository.
README.md is the public project document. Keep detailed implementation notes, phase runbooks, deployment evidence, and operational cautions here.
Current Production
Railway project:
- project:
tx402 - url:
https://tx402-production.up.railway.app - service:
tx402 - environment:
production - region:
sfo
Live payment configuration:
- network: Mainnet
NETWORK=algorand:wGHE2Pwdvd7S12BL5FaOP20EGYesN73ktiC1qzkkit8=USDC_ASSET_ID=31566704PAY_TO=6RK3U3OF2B4Q773L4KC7OVFHQGU5I74NHRZ36QN6CVF527CKXAL62YR754FACILITATOR_URL=https://facilitator.goplausible.xyzTRUST_PROXY=1
Do not commit .env or any wallet file. *.local.json is intentionally
gitignored.
File Layout
| File | Job |
|---|---|
src/index.js |
HTTP routes, middleware ordering, logging, health checks, graceful shutdown |
src/indexer.js |
AlgoNode indexer client and deep-health indexer probe |
src/decoder.js |
Pure raw transaction decoder |
src/narrator.js |
Pure plain-English narrator |
src/insights.js |
Pure atomic-group and account-activity aggregation |
src/explainer.js |
Indexer/asset orchestration for all product routes |
src/knownApps.js |
App and asset label cache; protocol labels must be verified before use |
src/payments.js |
x402 payment gate configuration; no private keys |
src/rateLimit.js |
In-memory fixed-window per-IP limiter |
src/analytics.js |
Aggregate process-local adoption counters and privacy controls |
public/logo.svg / public/favicon.svg |
Public marketplace/landing-page visual assets |
public/demo.js |
CSP-compatible landing-page client for the free allowlisted demo |
scripts/smoke-phase3.mjs |
Public route deployment smoke test |
scripts/check-phase4-mainnet.mjs |
Mainnet receiver preflight |
scripts/check-phase5-buyer.mjs |
Mainnet buyer balance and opt-in preflight |
scripts/pay-and-explain.mjs |
x402 buyer client for Testnet or confirmed Mainnet payment |
examples/node-client.mjs |
Public client example; read-only by default, optional paid mode |
examples/catalog-client.mjs |
Read-only challenge example for single/group/batch routes |
mcp/tx402-mcp.mjs |
Backwards-compatible entry point for the packaged MCP wrapper |
packages/tx402-mcp/ |
Publishable tx402-mcp npm package and stdio implementation |
server.json |
Official MCP Registry metadata for io.github.Mahesvannan/tx402 |
openapi.json |
OpenAPI 3.1 document, also served at /openapi.json |
PLAN.md |
Adoption roadmap: discovery, demo, packaging, product, distribution, analytics |
test/*.test.js |
No runner dependency; each file is a standalone Node process |
Dockerfile / Procfile / .dockerignore |
Persistent-process deployment artifacts |
Review.md |
Gitignored audit/review history; read before assuming prior checks were not done |
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.
- 5d ago First seen · 348 lines · 3,162 tokens per session scan A 79d1fb0225fd
tx402 CLAUDE.md is an instructions file published in the GitHub repository Mahesvannan/tx402 (0 stars, last pushed 1mo ago), licensed MIT. It adds 3,162 tokens to every session, about $0.0158 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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