{"protocolVersion": "0.3.0", "name": "Audit a domain's email deliverability and sender reputation. Checks SPF, DKIM selectors, D", "description": "Audit a domain's email deliverability and sender reputation. Checks SPF, DKIM selectors, DMARC policy strength (reject/quarantine/none), BIMI, MX and PTR records, returning a spam score and prioritized fixes. Use it to assess inbox placement, email authentication and domain reputation before sending. Deterministic DNS-only, Ed25519-signed. 0.001 USDC on Base. First call FREE per wallet — send header X-WALLET: 0x<your Base address> (no payment); then \\ per call.", "url": "https://api.hergertsynthora.com/v1/deliver", "preferredTransport": "HTTP+JSON", "additionalInterfaces": [{"url": "https://api.hergertsynthora.com/v1/deliver", "transport": "HTTP+JSON"}, {"url": "https://api.hergertsynthora.com/v1/a2a", "transport": "JSONRPC"}], "version": "1.0.0", "provider": {"organization": "SYNTHORA", "url": "https://hergertsynthora.com"}, "capabilities": {"streaming": false, "pushNotifications": false, "stateTransitionHistory": false}, "defaultInputModes": ["application/json"], "defaultOutputModes": ["application/json"], "skills": [{"id": "deliverability", "name": "deliverability", "description": "Audit a domain's email deliverability and sender reputation. Checks SPF, DKIM selectors, DMARC policy strength (reject/quarantine/none), BIMI, MX and PTR records, returning a spam score and prioritized fixes. Use it to assess inbox placement, email authentication and domain reputation before sending. Deterministic DNS-only, Ed25519-signed. 0.001 USDC on Base. First call FREE per wallet — send header X-WALLET: 0x<your Base address> (no payment); then \\ per call.", "tags": ["deliverability", "x402", "synthora", "m2m", "a2a"], "examples": ["{\"domain\": \"example.com\"}"], "inputModes": ["application/json"], "outputModes": ["application/json"], "inputSchema": {"type": "object", "properties": {"domain": {"type": "string", "description": "Domain or email address to audit"}}, "required": ["domain"]}}], "securitySchemes": {"x402": {"type": "http", "scheme": "x402", "description": "HTTP 402 micropayment. 50000 atomic USDC on eip155:8453."}}, "security": [{"x402": []}], "x402": {"network": "eip155:8453", "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913", "amount": "50000", "payTo": "0xEf879BFD6C4AccB8F795136de90246e1EC245e06", "resource": "https://api.hergertsynthora.com/v1/deliver"}, "mcp": {"endpoint": "https://api.hergertsynthora.com/v1/mcp", "transport": "http-jsonrpc"}}