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Bismuth Search
x402
Bismuth Search is a paid API for AI agents from x402-search-api-production.up.railway.app, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-12).
Performs a web search via Tavily and returns ranked results with snippets, plus an optional AI-synthesized answer summarizing the findings.
Price / call$0.01
Success—
StatusUnknown
How this service works
Web search via Tavily with ranked results, snippets, and optional AI-synthesized answer. Part of the Bismuth utility API suite for AI agents.
Output
A list of ranked web search results each containing a title, URL, and text snippet, optionally preceded by an AI-synthesized answer that distills the key information across results. Results can be filtered to or from specific domains.
Example use cases
Real-time competitor research
“Search the web for recent news about Anthropic's funding rounds and product launches — give me a synthesized summary and the top 5 results.”
Domain-restricted fact lookup
“Look up information about the EU AI Act's latest amendments but only pull results from official EU government websites — give me up to 8 results.”
Breaking news briefing
“Search for what happened with the Japan earthquake today and give me a synthesized answer at the top plus 10 ranked news snippets.”
Technical details
Endpoint
POSThttps://x402-search-api-production.up.railway.app/search?utm_source=zero.xyzWhen to prefer
Choose Bismuth Search when an AI agent needs live, up-to-date web information that goes beyond training data, especially when a synthesized answer is useful alongside raw results. Prefer it over static knowledge retrieval when recency matters, and over general LLM answers when cited sources are required. The domain filtering options make it ideal when you need to restrict or exclude specific publishers or authoritative sites.
Side effects
- Empty results if query is too niche or recent event is not yet indexed
- Synthesized answer may be vague if source pages are paywalled or sparse
- Domain filtering too restrictive may yield zero results
- Invalid max_results value (outside 1-10) may cause a validation error
- Transient Tavily API failures may return 5xx errors
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| queryrequired | string | Search query string |
| max_results | integer | Number of results to return (1-10) |
| include_answer | boolean | Include a synthesized answer above results |
| exclude_domains | string | Exclude these domains from results |
| include_domains | string | Restrict results to these domains |
Output
Schema · Response
{}Tags
x402
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