Borrowing it
Nothing to install: this file belongs to mercadopago/mercadopago-claude-marketplace. 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/mercadopago/mercadopago-claude-marketplace/main/AGENTS.mdgit clone --depth 1 https://github.com/mercadopago/mercadopago-claude-marketplaceWrote 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/mercadopago/mercadopago-claude-marketplace/agents-md)<a href="https://agentmods.dev/instructions/mercadopago/mercadopago-claude-marketplace/agents-md"><img src="https://agentmods.dev/badge/instructions/mercadopago/mercadopago-claude-marketplace/agents-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/mercadopago/mercadopago-claude-marketplace/agents-md"><img src="https://agentmods.dev/badge/instructions/mercadopago/mercadopago-claude-marketplace/agents-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 | $0.00726 | $0.00726 |
| Opus 5 | $0.00363 | $0.00363 |
| Sonnet 5 | $0.00145 | $0.00145 |
| Haiku 4.5 | $0.00073 | $0.00073 |
Grade A, and why
mercadopago-claude-marketplace 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 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 — 63 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Claude Plugin Development Guide
This repository builds the official Mercado Pago plugin marketplace for Claude Code. All runtime behavior, examples, paths, and validation must target Claude Code, not another agent platform.
Architecture
- One Claude agent:
plugins/mercadopago/agents/mp-integration-expert.md. - Four passive skills only:
mp-integrate,mp-webhooks,mp-test-setup, andmp-review. - Commands are user-facing Claude Code slash commands.
- The agent is a thin router; implementation guidance belongs in skills and their approved references.
- MCP is connected only immediately before a selected operation needs an MCP tool. Offline-capable work must remain available.
Plugin paths
- Use
${CLAUDE_PLUGIN_ROOT}for scripts, references, and configuration bundled with the active plugin version. - Use
${CLAUDE_PLUGIN_DATA}only for persistent plugin-owned data that must survive updates. - Use
${CLAUDE_PROJECT_DIR}for the developer's application. - Never hardcode or scan
~/.claude/plugins/cache. - Never copy the plugin's
.mcp.jsoninto the developer's project. Claude Code registers plugin MCP servers from the plugin manifest.
File formats
- Agent frontmatter requires
tools,model,tags,category, andversion. - Skill frontmatter uses a
metadatablock. Never addtoolsormodelto a skill. - Command frontmatter uses
allowed-tools, nottools. - Keep the agent under 150 lines.
- Keep the skill count at four unless the architecture is intentionally redesigned.
Integration invariants
- Checkout Pro and Checkout API must always resolve a concrete checkout CTA.
- Checkout Pro places a visible Mercado Pago payment button at the resolved location.
- Checkout API creates a separate payment page and links the resolved CTA to it.
- Every visible checkout field has a persistent associated label.
- Secure card hosts remain interactive and are never disabled, readonly, inert, or covered by an overlay.
- Public client configuration is loaded at runtime without HTML placeholder substitution.
- Use
/checkout/preferencesfor Checkout Pro preferences; never prefix that route with/v1. - Never install or update an SDK without authorization. Once authorized, use the official current stable release and update the lockfile.
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 · 63 lines · 726 tokens per session scan A 0d9a4d9ccd66
mercadopago-claude-marketplace AGENTS.md is an instructions file published in the GitHub repository mercadopago/mercadopago-claude-marketplace (26 stars, last pushed 8d ago), licensed Apache-2.0. It adds 726 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 2026-08-30.
Other instructions, from other repositories
spec-kit AGENTS.md
AGENTS.md instructions for github/spec-kit, covering agents.md, about spec kit and specify, quickstart — add a new integration in 5 steps, integration architecture and integrationmanifest — file tracking.
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.
codex AGENTS.md
AGENTS.md instructions for openai/codex, covering rust/codex-rs, the codex-core crate, code review rules, crate api surface and model visible context.
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).
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 oss-third-party-notices.instructions.md
Instructions for microsoft/vscode, covering vs code oss third-party-notices pipeline, architecture, pipeline flow in ci, applying the notice (cutover) and fallback chain (never fail the build).