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Search Aggregator (Deep Tier) — Tavily + Exa + Firecrawl
x402
Search Aggregator (Deep Tier) — Tavily + Exa + Firecrawl is a paid API for AI agents from search.combify.app, paid per call via x402, $0.05/call, status unknown (last checked 2026-10-23).
Performs a deep web search by merging results from Tavily, Exa, and Firecrawl with full page content and a synthesized answer for $0.05 USDC per call.
Price / call$0.05
Success—
StatusUnknown
How this service works
Search Aggregator deep tier: Serper+Tavily+Exa+Firecrawl merged results with full page content and synthesized answer, fixed price $0.05 USDC. POST JSON body {query (required), max_results (optional 1-20, default 10)}. Mode is fixed by the path — no mode field needed, the quoted price is always the settled price.
Output
Returns a JSON object containing: a synthesized natural-language answer, an array of up to 20 search results (each with URL, title, snippet, full page content, source provider name, and published date), list of providers used (Tavily, Exa, Firecrawl), total latency in milliseconds, and any warnings encountered during aggregation.
Example use cases
Competitive landscape deep research
“Do a thorough deep search on the current competitive landscape for AI coding assistants — get me up to 15 full-content results with a synthesized summary so I can understand who the main players are and what they offer.”
Fact-checking a complex claim
“I need to fact-check whether lithium-ion battery recycling rates have improved significantly since 2020 — run a deep search pulling from multiple sources and give me a synthesized answer with full article content, up to 10 results.”
Background research for a blog post
“Search deeply for recent developments in CRISPR gene editing for treating inherited diseases — I want full page content from up to 12 sources and a synthesized overview I can use as background research.”
Technical details
Endpoint
GEThttps://search.combify.app/deep?utm_source=zero.xyzWhen to prefer
Choose this deep-tier endpoint when you need comprehensive research results with full page content rather than just titles and snippets. It is ideal when a synthesized answer across multiple authoritative sources is needed, when the topic requires cross-referencing Tavily, Exa, and Firecrawl simultaneously, or when snippet-level information from the fast tier ($0.01) is insufficient. Prefer the sibling fast tier for quick lookups where full content is unnecessary.
Side effects
- Query parameter missing — returns error requiring 'query' field
- max_results out of range (must be 1–20) — likely returns validation error
- One or more upstream providers (Tavily/Exa/Firecrawl) unavailable — partial results returned with warnings
- No results found for obscure queries — empty results array with null answer
- Payment not settled — x402 payment required error before results are returned
- Rate limiting or quota exhaustion from upstream providers
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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