Assay A2A, MCP & x402 Pre-Flight Verifier & Observatory

Ingested from the official MCP Registry

FastDrop pulled this entry from the official MCP Registry as dev.agentdiet/assay and probed the endpoint. The maker did not submit it, so the outbound link is not endorsed and the description is not theirs.

If this is your server, claim the listing to edit it and take ownership. The registry index lists everything else still awaiting a probe.

Tools this endpoint exposes

Read directly from the endpoint on 19 Oct 2026. Not supplied by the maker.

• assay_preflight

  Gate a remote MCP, A2A, or x402 endpoint before calling or paying it by probing live JSON-RPC reachability, hashing tools/list (SHA-256), and scanning for prompt-injection poisoning. When expected_too

• assay_probe

  Register a new remote MCP, A2A, or x402 endpoint or refresh its public Assay Observatory dossier by running a live HTTP, agent-card, and JSON-RPC tools/list inspection without policy gating. Target mu

• assay_verify_delivery

  Audit a paid x402 or A2A provider after payment to confirm delivery or prove an SLA breach with an HMAC-SHA256 signed receipt. Passing status_code >= 500 forces verdict='sla_breach_confirmed' even if

• assay_get_ledger_policy

  Retrieve historical conformance observations and manage pinned SHA-256 tools/list policy hashes in the Assay ledger for a target endpoint. When expected_tools_hash is provided, it pins that 64-hex dig

Is this tool yours?

Claim this listing and we’ll verify ownership before handing it over.