mp-webhooks
SkillConfigure and validate Mercado Pago webhooks. Wraps the MCP webhook tools (save_webhook, notifications_history) and provides the HMAC-SHA256 signature validation pattern that every receiver must implement. Use when adding, debugging, or hardening notification handling.
Install
git clone https://github.com/mercadopago/mercadopago-claude-marketplace.git ~/.claude/skills/mp-webhooksWhat is mp-webhooks?
Configure and validate Mercado Pago webhooks. Wraps the MCP webhook tools (save_webhook, notifications_history) and provides the HMAC-SHA256 signature validation pattern that every receiver must implement. Use when adding, debugging, or hardening notification handling.
What this can do
Capabilities declared in this component's own frontmatter — not inferred.
Inherit all session tools
Declares no tool restrictions — inherits every session tool
~67 tokens of context used while enabled, before you invoke anything
Documentation
README · ~5 min readmp-webhooks
This skill is for everything notifications. It is the only place where the HMAC validation pattern lives — every other skill defers here.
Step 0 — Verify MCP is actually authenticated
ListMcpResourcesTool is unreliable for this MCP (always returns "No resources found"). The bootstrap tools authenticate / complete_authentication are always present and prove nothing.
Check whether mcp__plugin_mercadopago_mcp__application_list is callable AND returns a real payload.
Soft gate — the receiver scaffold is static
Scaffolding the webhook receiver (Steps 1–2) is static code and needs no MCP. The gate is therefore soft:
- Authenticated → continue normally.
- Loaded, not authenticated → show the prerequisites checklist below + the OAuth prompt inline, then continue to Steps 1–2 (the receiver scaffold). Do not block. The MCP is only required at Steps 4–6 (
save_webhook,notifications_history) — re-gate per call there.
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