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A2A Retailmedia — the agentic retail-media hub for grocery
io.github.greencore-solutions/a2a-retailmedia in the official MCP registry.
Endpoint https://mcp.a2a-retailmedia.ai/mcp. Source: github.com/greencore-solutions/a2a-retailmedia.
The registry describes it as: Connecting grocery retail to 350k makers for media buys.
We read its 19 tools on 2026-10-26. Nothing in them matched our tool-poisoning rules. It also sets server instructions, text a client puts in front of the model on connect; those were read too.
A clean read means these rules found nothing, not that the server is harmless. A server can change its tools at any time, which is why the index reads it again every week.
Tools it advertises
resolve_jurisdiction resolve_actor gate_transaction find_makers resolve_gtin check_eligibility list_banners get_banner_card list_banner_cards list_packages quote_package find_buyer submit_demand receive_demand a2a_handoff pull_measurement renew_package log_audit enrol_maker
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[](https://lazaretto.dev/mcp-registry/io-github-greencore-solutions-a2a-retailmedia)How this was checked
Lazaretto connects to the endpoint the way any MCP client does, asks the server to introduce itself and list its tools, and reads every name, description, parameter schema and server instruction for tool poisoning: hidden directive blocks, orders to read local secrets, parameters built to carry secrets or the conversation out, orders that redirect another server's tools, and invisible characters. It never calls a tool. What we found across the registry.
To run the same check every time Claude Code adds a server, install the free lazaretto-guard plugin. Browse every server in the index.