Getting it into your agent
One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.
npx agentmods add instructions/up2itnow0822/agentpay-mcp/agents-mdgit clone --depth 1 https://github.com/up2itnow0822/agentpay-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/up2itnow0822/agentpay-mcp/agents-md)<a href="https://agentmods.dev/instructions/up2itnow0822/agentpay-mcp/agents-md"><img src="https://agentmods.dev/badge/instructions/up2itnow0822/agentpay-mcp/agents-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 | $0.00258 | $0.00258 |
| Opus 5 | $0.00129 | $0.00129 |
| Sonnet 5 | $0.00052 | $0.00052 |
| Haiku 4.5 | $0.00026 | $0.00026 |
Grade A, and why
agentpay-mcp AGENTS.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.
What it actually says
AGENTS.md -- AgentPay MCP
Purpose
- This repository provides the canonical MCP server for policy-aware x402 payment tools in the AI Agent Economy payment trial.
Ownership
- AI Agent Economy owns the server, npm package, documentation, and release evidence.
Local Contracts
- Preserve local signing, explicit policy checks, idempotency, and fail-closed handling of malformed or untrusted payment responses.
- Never use live funds or production credentials in default tests.
- Keep npm metadata, README commands, GitHub releases, and runtime behavior consistent.
- Treat
dist/, coverage, dependency folders, and generated repair artifacts as outputs unless a closer contract says otherwise.
Work Guidance
- Make payment-safety and compatibility changes in reviewable slices.
- Keep public claims traceable to code, tests, or independent evidence.
- Keep daily review and repair automation separate from product CI health.
Verification
- Run
npm run build,npm run typecheck, andnpm test. - Run
npm run lintandnpm run security. - Run
npm run smoke:clean-installfor package or release changes.
Child DOX Index
- No closer child contracts are currently defined.
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 · 38 lines · 258 tokens per session scan A 56398b25cdce
agentpay-mcp AGENTS.md is an instructions file published in the GitHub repository up2itnow0822/agentpay-mcp (5 stars, last pushed 2d ago), licensed MIT. It adds 258 tokens to every session, about $0.0013 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.
Other instructions, from other repositories
ampersend-sdk CLAUDE.md
Instructions for edgeandnode/ampersend-sdk, covering claude.md, project overview, development commands, python setup and install python 3.13.
agent-wallet-sdk AGENTS.md
AGENTS.md instructions for up2itnow0822/agent-wallet-sdk, covering agents.md -- agent wallet sdk, purpose, ownership, local contracts and work guidance.
skills AGENTS.md
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sumup-skills GEMINI.md
Instructions for sumup/sumup-skills: This extension provides guidance for building SumUp payment integrations.
mangrove-agent CLAUDE.md
Instructions for MangroveTechnologies/mangrove-agent, covering mangrove agent, architecture, conventions, rules and configuration.
blockrun-mcp CLAUDE.md
Claude Code instructions for BlockRunAI/blockrun-mcp, covering blockrun mcp, commands, project structure, key dependencies and install in claude code.