{"name":"keyword-suggest","description":"Keyword and autocomplete suggestions for any seed query. Aggregates Wikipedia OpenSearch and DuckDuckGo autocomplete (both public, no auth) into a de-duplicated ranked list — useful for SEO keyword research, content-gap analysis, LLM query expansion, and agent-driven research.","price":"$0.002","method":"POST","input_schema":{"properties":{"query":{"type":"string","description":"Seed query."},"keyword":{"type":"string","description":"Alias for query."},"limit":{"type":"number","description":"1-50. Default 10."},"source":{"type":"string","enum":["wikipedia","duckduckgo","all"],"description":"Default 'all'."},"lang":{"type":"string","description":"Wikipedia language code, e.g. 'en', 'es'. Default 'en'."}},"anyOf":[{"required":["query"]},{"required":["keyword"]}]},"input_example":{"query":"ethereum","limit":10},"output_example":{"query":"ethereum","suggestions":["Ethereum","Ethereum classic","Ethereum 2.0","Ethereum price","Ethereum wallet"],"count":5,"per_source":{"wikipedia":{"count":5},"duckduckgo":{"count":5}},"attribution":"Sources: Wikipedia OpenSearch + DuckDuckGo Instant Answer (public APIs)."},"x402_payment_required":true,"x402_facilitator":"https://api.cdp.coinbase.com/platform/v2/x402"}