> ## Documentation Index > Fetch the complete documentation index at: https://docs.echozero.app/llms.txt > Use this file to discover all available pages before exploring further. # Verify an OAuth callback and issue tokens > Call this endpoint after the OAuth provider redirects back with `code` and `state`. Returns the same payload as `/auth/verify`. ## OpenAPI ````yaml https://mcp.echozero.app/api/docs-json post /api/auth/social/verify openapi: 3.0.0 info: title: EchoZero MCP API description: >- EchoZero MCP Server - Developer API for agent management, trading, marketplace, and AI chat. **Rate Limiting:** All endpoints enforce per-API-key rate limits. Tiers: free (60 req/min), standard (300 req/min), premium (1000 req/min). Every response includes `X-RateLimit-Limit`, `X-RateLimit-Remaining`, `X-RateLimit-Reset` headers. Exceeding the limit returns `429 Too Many Requests` with a `Retry-After` header. version: '1.0' contact: {} servers: - url: https://mcp.echozero.app description: Production security: [] tags: - name: MCP Protocol description: >- Model Context Protocol (Streamable HTTP): `/mcp`, `/mcp/sse` — not under `/api`; same API key as REST - name: Health description: Server health check - name: API Keys description: API key generation, listing, and revocation - name: User description: >- User profile, sessions, social, onboarding, internal agent subscriptions, and bot activations (v1: /v1/users/me) - name: Token description: Token data and trending - name: Trade description: Trade execution and history - name: Strategy description: Strategy (trading bot) configuration and control - name: Agent description: Agent registration and management - name: AI description: AI chat, intent, and insights - name: Wallet description: Wallet operations, deposits, and withdrawals - name: Notification description: Notification management and settings - name: Auth description: >- Public authentication: signup / login lookup, code verification, Google OAuth, refresh, and sign-out. Returns `accessToken` / `refreshToken` in the JSON body. - name: OAuth description: >- OAuth 2.1 authorization-code + PKCE for AI assistant clients: `/oauth/authorize`, `/oauth/token`, `/oauth/introspect`, `/status`. - name: Activity description: User trade activity list and search - name: Feed description: Social activity feed timeline - name: Earn description: Leaderboard, rewards, and referrals - name: Statics description: Countries, languages, and static data - name: Misc description: File uploads and utility endpoints - name: Developer description: Developer registration and profile - name: Developer dashboard description: >- Per-agent dashboard: subscribers (anonymized), performance detail, signal history (v1) - name: Developer Agent description: Developer agent listings and management - name: Developer Agents (Marketplace) description: Public browse, search, and subscribe to external developer-listed agents - name: Admin description: Admin-only endpoints for review, approval, and platform management - name: Webhooks description: >- Inbound provider webhooks (no API key). Telegram signal-bot uses `X-Telegram-Bot-Api-Secret-Token` when configured. paths: /api/auth/social/verify: post: tags: - Auth summary: Verify an OAuth callback and issue tokens description: >- Call this endpoint after the OAuth provider redirects back with `code` and `state`. Returns the same payload as `/auth/verify`. operationId: McpAuthController_verifySocialAuth parameters: - name: x-signature in: header required: false description: >- HMAC-SHA256 signature: HMAC-SHA256(secretKey, timestamp + METHOD + path + body). Optional -- when omitted, HMAC verification is skipped. schema: type: string - name: x-timestamp in: header required: false description: >- Request timestamp in epoch milliseconds. Required when x-signature is provided. Rejected if drift exceeds 5 minutes. schema: type: string requestBody: required: true description: OpenAPI schema **McpVerifySocialAuthBodyDto**. content: application/json: schema: $ref: '#/components/schemas/McpVerifySocialAuthBodyDto' examples: minimal: summary: State only description: >- Send the `state` returned from `/auth/social/url`; `code` is populated by the OAuth provider callback. value: state: 550e8400-e29b-41d4-a716-446655440000 fullAllFields: summary: State + code from OAuth callback value: state: 550e8400-e29b-41d4-a716-446655440000 code: oauth_authorization_code_from_google responses: '200': description: Social authentication succeeded; tokens issued. content: application/json: schema: allOf: - $ref: '#/components/schemas/McpSuccessResponseDto' - properties: data: $ref: '#/components/schemas/McpLoginResponseDto' '400': description: Invalid / expired state or missing OAuth code. content: application/json: schema: $ref: '#/components/schemas/McpErrorResponseDto' components: schemas: McpVerifySocialAuthBodyDto: type: object properties: state: type: string description: >- UUID state value returned from the corresponding `/auth/social/url` call. format: uuid example: 550e8400-e29b-41d4-a716-446655440000 code: type: string description: Authorization code forwarded from the OAuth provider callback. required: - state McpSuccessResponseDto: type: object properties: success: type: boolean example: true data: type: object description: Endpoint-specific payload additionalProperties: true required: - success - data McpLoginResponseDto: type: object properties: status: type: string enum: - success - error newUser: type: boolean onBoardingCompleted: type: boolean mfaRequired: type: boolean user: $ref: '#/components/schemas/McpAuthUserDto' tokens: description: >- Issued tokens. Present on successful non-MFA authentications; `mfaAccessToken` only when `mfaRequired` is true. allOf: - $ref: '#/components/schemas/McpAuthTokensDto' errorMessage: type: string unlocksAt: type: string format: date-time required: - status McpErrorResponseDto: type: object properties: success: type: boolean example: false error: $ref: '#/components/schemas/McpErrorBodyDto' required: - success - error McpAuthUserDto: type: object properties: id: type: string example: 507f1f77bcf86cd799439011 username: type: string example: alice_bob email: type: string example: alice@example.com languageCode: type: string enum: - EN - PT - ES - RU - FR - JA - UK - TR emailVerifiedAt: type: string format: date-time required: - id - username McpAuthTokensDto: type: object properties: accessToken: type: string description: >- Short-lived JWT access token. Send as `Authorization: Bearer `. refreshToken: type: string description: Long-lived opaque refresh token. Exchange via `POST /auth/refresh`. mfaAccessToken: type: string description: >- JWT issued when the account requires MFA verification before login can complete. McpErrorBodyDto: type: object properties: code: type: string example: NOT_FOUND message: type: string example: Resource not found required: - code - message ````