{"transport":"streamable-http","protocolVersion":"2025-06-18","serverInfo":{"name":"agent-card-validator-mcp","version":"0.1.0"},"tools":[{"name":"wellknowns_audit","description":"Audit any x402/A2A service's 5 discovery surfaces (agent-card.json, ai-plugin.json, openapi.yaml, mcp.json, agent-discovery). Returns a 0-100 score plus per-surface presence + sub-scores + structured improvement TODO list. Costs $0.05 USDC on Base via x402.","price":"$0.05"},{"name":"wellknowns_lint","description":"Strict JSON-schema lint of agent-card.json against Google A2A AgentCard spec subset. Returns valid:bool + structured errors at fatal/error/warn severities with JSONPath-style locations. Costs $0.03 USDC on Base via x402.","price":"$0.03"}],"note":"POST JSON-RPC 2.0 to this URL (initialize, tools/list, tools/call)."}