> ## Documentation Index > Fetch the complete documentation index at: https://docs.thebuoy.app/llms.txt > Use this file to discover all available pages before exploring further. # List available satellites/missions > Discovery endpoint listing the satellite missions you can filter passes by, with each mission's pass count and metadata. Use a returned `slug` as the `mission` filter on `GET /buoys/satellite_passes`. Mission `description` is localized (English/French). Select the language with `?locale=` or the `Accept-Language` header; defaults to English. ## OpenAPI ````yaml /api-reference/openapi.json get /buoys/satellites openapi: 3.0.3 info: title: The Buoy API version: 2.0.0 description: >- **The Buoy API** — programmatic access to ocean wave buoys on The Surf Kit platform. All operations are **read-only** (`GET`). Data includes live and historical readings, geographic filters, chart time series, and **`GET /conditions`** (combined forecast, buoy reading, and tide for a point). ## Authentication Pass your API key in the `Authorization` header: ``` Authorization: Bearer YOUR_API_KEY ``` `GET /buoys/search` and `GET /buoys/nearest` are public (no key required). ## Rate limiting Responses include `X-RateLimit-*` headers. Exceeding your hourly quota returns `429 Too Many Requests`. contact: name: API Support email: thomas@thebuoy.app license: name: Proprietary servers: - url: https://api.thebuoy.app/v2 description: Production server (V2) - url: http://localhost:3000/api/v2 description: Development server (V2) security: - ApiKeyAuth: [] tags: - name: Buoys description: Real-time ocean buoy data - name: Satellite Passes description: >- Satellite altimeter passes over virtual buoys, and the missions behind them - name: Conditions description: All-in-one conditions endpoint paths: /buoys/satellites: get: tags: - Satellite Passes summary: List available satellites/missions description: > Discovery endpoint listing the satellite missions you can filter passes by, with each mission's pass count and metadata. Use a returned `slug` as the `mission` filter on `GET /buoys/satellite_passes`. Mission `description` is localized (English/French). Select the language with `?locale=` or the `Accept-Language` header; defaults to English. operationId: listSatellites parameters: - name: locale in: query description: >- Language for localized text (the mission `description`). `Accept-Language` is also honored. schema: type: string enum: - en - fr default: en responses: '200': description: Successful response headers: X-RateLimit-Limit: $ref: '#/components/headers/XRateLimitLimit' X-RateLimit-Remaining: $ref: '#/components/headers/XRateLimitRemaining' X-RateLimit-Reset: $ref: '#/components/headers/XRateLimitReset' content: application/json: schema: type: object properties: status: type: string example: success data: type: object properties: satellites: type: array items: $ref: '#/components/schemas/SatelliteMission' count: type: integer '401': $ref: '#/components/responses/Unauthorized' '429': $ref: '#/components/responses/RateLimitExceeded' security: - ApiKeyAuth: [] components: headers: XRateLimitLimit: schema: type: integer description: Maximum requests allowed per hour example: 1000 description: Maximum requests allowed per hour XRateLimitRemaining: schema: type: integer description: Requests remaining in current hour example: 987 description: Requests remaining in current hour XRateLimitReset: schema: type: integer description: Unix timestamp when rate limit resets example: 1735326000 description: Unix timestamp when rate limit resets schemas: SatelliteMission: type: object properties: slug: type: string description: Stable identifier; use as the `mission` filter on satellite_passes. example: cfosat name: type: string example: CFOSAT agency: type: string nullable: true example: CNES / CNSA instrument: type: string nullable: true example: SWIM description: type: string nullable: true description: Localized (en/fr) via the `locale` query param / `Accept-Language`. image_url: type: string nullable: true pass_count: type: integer description: Number of recorded passes for this mission. ErrorResponse: type: object description: Standardized error response format for V2 API properties: error: type: string description: >- Error code (e.g., "unauthorized", "bad_request", "resource_not_found") example: unauthorized message: type: string description: Human-readable error message example: Invalid API key details: type: object description: Additional error details (optional, varies by error type) responses: Unauthorized: description: Invalid or missing API key (401 Unauthorized) content: application/json: schema: $ref: '#/components/schemas/ErrorResponse' example: error: unauthorized message: Invalid API key timestamp: '2025-12-27T14:30:00Z' request_id: 550e8400-e29b-41d4-a716-446655440000 RateLimitExceeded: description: Rate limit exceeded (429 Too Many Requests) headers: X-RateLimit-Limit: schema: type: integer description: Maximum requests allowed per hour example: 1000 X-RateLimit-Remaining: schema: type: integer description: Requests remaining in current hour example: 0 X-RateLimit-Reset: schema: type: integer description: Unix timestamp when rate limit resets (top of next hour) example: 1735326000 Retry-After: schema: type: integer description: Seconds to wait before retrying example: 3600 content: application/json: schema: $ref: '#/components/schemas/ErrorResponse' example: error: rate_limit_exceeded message: You have exceeded 1000 requests per hour timestamp: '2025-12-27T14:30:00Z' request_id: 550e8400-e29b-41d4-a716-446655440000 securitySchemes: ApiKeyAuth: type: http scheme: bearer bearerFormat: API Key description: > API key authentication. Pass your API key as a Bearer token in the Authorization header. Format: `Authorization: Bearer YOUR_API_KEY` Alternative: Pass as query parameter `?api_key=YOUR_API_KEY` **Security:** API keys are stored as BCrypt hashes (never plain text). Only the hash is stored in the database. ````