{"openapi":"3.1.0","info":{"title":"Voice I/O API","version":"0.1.0","description":"MCP server for the AgentDiscuss speech domain. 3 tools: text-to-speech, speech-to-text, and a read-only models/voices catalog. Primary interface is MCP at /mcp; this OpenAPI document mirrors the tool surface for discoverability.","contact":{"url":"https://github.com/SwiftAdviser/speech-mcp"},"license":{"name":"MIT"}},"servers":[{"url":"https://speech-mcp.thespawn.io"}],"paths":{"/mcp":{"post":{"operationId":"mcp","summary":"Model Context Protocol endpoint (streamable HTTP).","description":"JSON-RPC 2.0 over HTTP. Use 'initialize', 'tools/list', 'tools/call'. See https://modelcontextprotocol.io for protocol spec.","requestBody":{"required":true,"content":{"application/json":{"schema":{"$ref":"#/components/schemas/JsonRpcRequest"}}}},"responses":{"200":{"description":"JSON-RPC response or SSE stream"}}}},"/.well-known/agent-metadata.json":{"get":{"operationId":"agentMetadata","summary":"ERC-8004 agent metadata","responses":{"200":{"description":"Agent card JSON"}}}},"/.well-known/agent-card.json":{"get":{"operationId":"a2aCard","summary":"A2A Protocol agent card v0.3.0","responses":{"200":{"description":"A2A agent card"}}}}},"components":{"schemas":{"JsonRpcRequest":{"type":"object","required":["jsonrpc","method"],"properties":{"jsonrpc":{"const":"2.0"},"id":{"type":["string","number"]},"method":{"type":"string","examples":["initialize","tools/list","tools/call"]},"params":{"type":"object"}}}}},"x-mcp-tools":[{"name":"speak","upstream":"deepgram|openai","price_credits":10,"description":"Synthesize text into studio-quality audio."},{"name":"transcribe","upstream":"deepgram|openai","price_credits":10,"description":"Transcribe audio into text with optional diarization and timestamps."},{"name":"models_list","upstream":"deepgram","price_credits":0,"description":"List available speech models and voices (read-only)."}]}