{
  "format": "delx/intent-card/v1",
  "id": "open-knowledge-search-api",
  "intent": "search Wikipedia for a concise sourced answer",
  "title": "Open knowledge search API for agents",
  "description": "Search bounded English Wikipedia metadata for $0.001 through the public Wikimedia API and receive attributed page links plus short snippets—not general web results or article bodies.",
  "keywords": [
    "Wikipedia search API",
    "open knowledge API",
    "Wikimedia API",
    "agent research API",
    "sourced knowledge search",
    "x402 knowledge"
  ],
  "updated_at": "2026-08-06",
  "canonical_url": "https://commerce.delx.ai/intents/open-knowledge-search-api",
  "machine_url": "https://commerce.delx.ai/intents/open-knowledge-search-api.json",
  "recommendation": {
    "tool_name": "search_open_knowledge",
    "service_name": "Open Knowledge for Agents",
    "method": "POST",
    "resource": "https://api.delx.ai/api/v1/x402/open-knowledge-search",
    "price_usdc": "0.001",
    "payment_protocols": [
      "x402",
      "mpp"
    ],
    "input_schema": {
      "type": "object",
      "properties": {
        "query": {
          "type": "string",
          "minLength": 1,
          "maxLength": 120,
          "description": "Knowledge query, 1-120 characters."
        },
        "max_records": {
          "type": "integer",
          "minimum": 1,
          "maximum": 10,
          "default": 10,
          "description": "Maximum number of Wikipedia results."
        },
        "timeout": {
          "type": "integer",
          "minimum": 2,
          "maximum": 8,
          "default": 8,
          "description": "Upstream timeout in seconds."
        }
      },
      "required": [
        "query"
      ],
      "additionalProperties": false
    },
    "example_input": {
      "query": "agentic commerce",
      "max_records": 3
    },
    "example_output": {
      "tool_name": "search_open_knowledge",
      "result": {
        "schema": "delx/open-knowledge-search/v1",
        "scope": "open_knowledge",
        "language": "en",
        "query": "agentic commerce",
        "max_records": 3,
        "count": 1,
        "results": [
          {
            "title": "Example topic",
            "url": "https://en.wikipedia.org/wiki/Example_topic",
            "snippet": "A short attributed search snippet.",
            "pageid": 123
          }
        ],
        "provider": "Wikimedia/Wikipedia",
        "provider_url": "https://www.wikipedia.org/",
        "license_url": "https://creativecommons.org/licenses/by-sa/4.0/",
        "attribution": "Search metadata supplied by Wikimedia/Wikipedia; snippets remain under the applicable page licenses. Preserve attribution and the license link.",
        "cache": "miss"
      }
    },
    "agentcash": {
      "buy": "npx agentcash@latest fetch https://api.delx.ai/api/v1/x402/open-knowledge-search -m POST -H 'x-delx-source: intent-card-open-knowledge-search-api' --max-amount 0.001 -b '{\"query\":\"agentic commerce\",\"max_records\":3}'",
      "max_amount_usdc": "0.001"
    }
  },
  "attribution": {
    "header": "x-delx-source",
    "value": "intent-card-open-knowledge-search-api"
  },
  "evidence": {
    "paid_openapi": "https://api.delx.ai/openapi.x402.json",
    "governed_portfolio": "https://api.delx.ai/x402-portfolio.json",
    "live_contract": "https://api.delx.ai/api/v1/x402/open-knowledge-search"
  }
}