Assay A2A, MCP & x402 Pre-Flight Verifier & Observatory MCP Tools
Assay A2A, MCP & x402 Pre-Flight Verifier & Observatory exposes 4 tools. Each one has its own page with the configuration for every client that can run this server.
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assay_preflightassay preflight
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assay_probeassay probe
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assay_verify_deliveryassay verify delivery
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assay_get_ledger_policyassay get ledger policy
This list was read from the server itself, by connecting to it and calling tools/list on 19 October 2026. It is what
the server actually exposes, not what its listing claims.
Mutating and Read-only are read off each tool's name, not its schema — a hint, not a guarantee. The registry stores tool names only; connect the server for its live schemas.