{
  "aid": "sylvia-api",
  "name": "Sylvia API",
  "description": "Sylvia API is a third-party Reddit data gateway that serves Reddit content as structured JSON — posts, comments with full recursive threads, subreddit and user surfaces, search, and live comment streams. Authentication is a single API key sent in the X-API-KEY header. It occupies the gap left by Pushshift, giving researchers, developers, and AI agents queryable Reddit data without going through first-party OAuth. Billing is pay-per-request across four tiers (Free, Strela, Svetka, Enterprise), and the surface is also exposed as a Model Context Protocol (MCP) server for direct agent tool-calling.",
  "image": "https://sylvia-api.com/logo.svg",
  "url": "https://sylvia-api.com/apis.json",
  "created": "2026-08-04",
  "modified": "2026-08-20",
  "specificationVersion": "0.21",
  "type": "Index",
  "position": "Producing",
  "access": "3rd-Party",
  "kind": "contract",
  "tags": [
    "Reddit",
    "Social",
    "Data",
    "Search",
    "Comments",
    "Research",
    "Content",
    "Streaming"
  ],
  "apis": [
    {
      "aid": "sylvia-api:sylvia-api-subreddits-api",
      "name": "Sylvia API Subreddits API",
      "description": "Subreddit metadata, listings, rules, wiki, sticky, and subreddit discovery.",
      "humanURL": "https://sylvia-api.com/",
      "baseURL": "https://api.sylvia-api.com/v1",
      "tags": [
        "Subreddits"
      ],
      "properties": [
        {
          "type": "OpenAPI",
          "url": "https://sylvia-api.com/openapi.json"
        },
        {
          "type": "X-OpenAPI-Source",
          "url": "https://sylvia-api.com/openapi.json"
        },
        {
          "type": "Website",
          "url": "https://sylvia-api.com/"
        },
        {
          "type": "Documentation",
          "url": "https://sylvia-api.com/docs/"
        },
        {
          "type": "Authentication",
          "url": "https://sylvia-api.com/docs/"
        },
        {
          "type": "LlmsText",
          "url": "https://sylvia-api.com/llms.txt"
        }
      ]
    },
    {
      "aid": "sylvia-api:sylvia-api-users-api",
      "name": "Sylvia API Users API",
      "description": "User profile metadata and submitted, comments, and overview content listings.",
      "humanURL": "https://sylvia-api.com/",
      "baseURL": "https://api.sylvia-api.com/v1",
      "tags": [
        "Users"
      ],
      "properties": [
        {
          "type": "OpenAPI",
          "url": "https://sylvia-api.com/openapi.json"
        },
        {
          "type": "X-OpenAPI-Source",
          "url": "https://sylvia-api.com/openapi.json"
        },
        {
          "type": "Website",
          "url": "https://sylvia-api.com/"
        },
        {
          "type": "Documentation",
          "url": "https://sylvia-api.com/docs/"
        },
        {
          "type": "Authentication",
          "url": "https://sylvia-api.com/docs/"
        },
        {
          "type": "LlmsText",
          "url": "https://sylvia-api.com/llms.txt"
        }
      ]
    },
    {
      "aid": "sylvia-api:sylvia-api-posts-api",
      "name": "Sylvia API Posts & Comments API",
      "description": "Fetch posts and comments by URL, fully resolved threads, and expanded comment stubs.",
      "humanURL": "https://sylvia-api.com/",
      "baseURL": "https://api.sylvia-api.com/v1",
      "tags": [
        "Posts",
        "Comments"
      ],
      "properties": [
        {
          "type": "OpenAPI",
          "url": "https://sylvia-api.com/openapi.json"
        },
        {
          "type": "X-OpenAPI-Source",
          "url": "https://sylvia-api.com/openapi.json"
        },
        {
          "type": "Website",
          "url": "https://sylvia-api.com/"
        },
        {
          "type": "Documentation",
          "url": "https://sylvia-api.com/docs/"
        },
        {
          "type": "Authentication",
          "url": "https://sylvia-api.com/docs/"
        },
        {
          "type": "LlmsText",
          "url": "https://sylvia-api.com/llms.txt"
        }
      ]
    },
    {
      "aid": "sylvia-api:sylvia-api-search-api",
      "name": "Sylvia API Search API",
      "description": "Global keyword search across Reddit posts.",
      "humanURL": "https://sylvia-api.com/",
      "baseURL": "https://api.sylvia-api.com/v1",
      "tags": [
        "Search"
      ],
      "properties": [
        {
          "type": "OpenAPI",
          "url": "https://sylvia-api.com/openapi.json"
        },
        {
          "type": "X-OpenAPI-Source",
          "url": "https://sylvia-api.com/openapi.json"
        },
        {
          "type": "Website",
          "url": "https://sylvia-api.com/"
        },
        {
          "type": "Documentation",
          "url": "https://sylvia-api.com/docs/"
        },
        {
          "type": "Authentication",
          "url": "https://sylvia-api.com/docs/"
        },
        {
          "type": "LlmsText",
          "url": "https://sylvia-api.com/llms.txt"
        }
      ]
    },
    {
      "aid": "sylvia-api:sylvia-api-live-api",
      "name": "Sylvia API Live API",
      "description": "Global and per-subreddit real-time comment streams.",
      "humanURL": "https://sylvia-api.com/",
      "baseURL": "https://api.sylvia-api.com/v1",
      "tags": [
        "Live",
        "Streaming"
      ],
      "properties": [
        {
          "type": "OpenAPI",
          "url": "https://sylvia-api.com/openapi.json"
        },
        {
          "type": "X-OpenAPI-Source",
          "url": "https://sylvia-api.com/openapi.json"
        },
        {
          "type": "Website",
          "url": "https://sylvia-api.com/"
        },
        {
          "type": "Documentation",
          "url": "https://sylvia-api.com/docs/"
        },
        {
          "type": "Authentication",
          "url": "https://sylvia-api.com/docs/"
        },
        {
          "type": "LlmsText",
          "url": "https://sylvia-api.com/llms.txt"
        }
      ]
    },
    {
      "aid": "sylvia-api:sylvia-api-bulk-api",
      "name": "Sylvia API Bulk & Discovery API",
      "description": "Fetch by fullname IDs, crosspost duplicates, domain listings, and subreddit discovery.",
      "humanURL": "https://sylvia-api.com/",
      "baseURL": "https://api.sylvia-api.com/v1",
      "tags": [
        "Bulk",
        "Discovery"
      ],
      "properties": [
        {
          "type": "OpenAPI",
          "url": "https://sylvia-api.com/openapi.json"
        },
        {
          "type": "X-OpenAPI-Source",
          "url": "https://sylvia-api.com/openapi.json"
        },
        {
          "type": "Website",
          "url": "https://sylvia-api.com/"
        },
        {
          "type": "Documentation",
          "url": "https://sylvia-api.com/docs/"
        },
        {
          "type": "Authentication",
          "url": "https://sylvia-api.com/docs/"
        },
        {
          "type": "LlmsText",
          "url": "https://sylvia-api.com/llms.txt"
        }
      ]
    }
  ],
  "common": [
    {
      "type": "Website",
      "url": "https://sylvia-api.com/"
    },
    {
      "type": "DeveloperPortal",
      "url": "https://sylvia-api.com/"
    },
    {
      "type": "Portal",
      "url": "https://sylvia-api.com/"
    },
    {
      "type": "Documentation",
      "url": "https://sylvia-api.com/docs/"
    },
    {
      "type": "APIReference",
      "url": "https://sylvia-api.com/docs/"
    },
    {
      "type": "GettingStarted",
      "url": "https://sylvia-api.com/docs/"
    },
    {
      "type": "Authentication",
      "url": "https://sylvia-api.com/docs/"
    },
    {
      "type": "Console",
      "url": "https://sylvia-api.com/"
    },
    {
      "type": "SignUp",
      "url": "https://sylvia-api.com/signup/"
    },
    {
      "type": "Login",
      "url": "https://sylvia-api.com/login"
    },
    {
      "type": "Pricing",
      "url": "https://sylvia-api.com/pricing/"
    },
    {
      "type": "Plans",
      "url": "https://sylvia-api.com/plans.json"
    },
    {
      "type": "RateLimits",
      "url": "https://sylvia-api.com/rate-limits.json"
    },
    {
      "type": "FinOps",
      "url": "https://sylvia-api.com/finops.json"
    },
    {
      "type": "TermsOfService",
      "url": "https://sylvia-api.com/terms"
    },
    {
      "type": "PrivacyPolicy",
      "url": "https://sylvia-api.com/privacy/"
    },
    {
      "type": "Security",
      "url": "https://sylvia-api.com/security/"
    },
    {
      "type": "StatusPage",
      "url": "https://sylvia-api.instatus.com/"
    },
    {
      "type": "ChangeLog",
      "url": "https://sylvia-api.com/changelog/"
    },
    {
      "type": "SDKs",
      "url": "https://sylvia-api.com/sdk/"
    },
    {
      "type": "CLI",
      "url": "https://sylvia-api.com/sdk/"
    },
    {
      "type": "MCPServer",
      "url": "https://api.sylvia-api.com/mcp"
    },
    {
      "type": "Support",
      "url": "https://sylvia-api.com/"
    },
    {
      "type": "Blog",
      "url": "https://sylvia-api.com/blog/"
    },
    {
      "type": "Compliance",
      "url": "https://sylvia-api.com/security/"
    },
    {
      "type": "Webhooks",
      "url": "https://sylvia-api.com/docs/"
    },
    {
      "type": "AgentSkill",
      "url": "https://sylvia-api.com/skills/sylvia-api-skill.md"
    },
    {
      "type": "Vocabulary",
      "url": "https://sylvia-api.com/vocabulary.json"
    },
    {
      "type": "LlmsText",
      "url": "https://sylvia-api.com/llms.txt"
    },
    {
      "type": "OpenAPI",
      "url": "https://sylvia-api.com/openapi.json"
    },
    {
      "type": "AgentCard",
      "url": "https://sylvia-api.com/.well-known/agent-card.json"
    },
    {
      "type": "AgenticAccessContract",
      "url": "https://sylvia-api.com/.well-known/agentic-access-contract.json"
    },
    {
      "type": "APICatalog",
      "url": "https://sylvia-api.com/.well-known/api-catalog"
    },
    {
      "type": "WellKnownCatalog",
      "url": "https://sylvia-api.com/.well-known/api-catalog"
    },
    {
      "type": "Ruleset",
      "url": "https://sylvia-api.com/.spectral.yml"
    },
    {
      "type": "SecurityTxt",
      "url": "https://sylvia-api.com/.well-known/security.txt"
    },
    {
      "type": "APIsJSON",
      "url": "https://sylvia-api.com/apis.json"
    },
    {
      "type": "Postman",
      "url": "https://sylvia-api.com/postman/sylvia-api.postman_collection.json"
    },
    {
      "type": "Conformance",
      "url": "https://sylvia-api.com/conformance.yml"
    },
    {
      "type": "Overlay",
      "url": "https://sylvia-api.com/overlays/sylvia-api-overlay.json"
    },
    {
      "type": "Deprecation",
      "url": "https://sylvia-api.com/deprecation.md"
    },
    {
      "type": "Errors",
      "url": "https://sylvia-api.com/docs/"
    }
  ],
  "maintainers": [
    {
      "FN": "Sylvie Dad",
      "email": "contact@sylvia-api.com",
      "url": "https://sylvia-api.com"
    }
  ]
}