Exa-powered neural web search at $0.01/request via micropayment — no API keys needed.
What it does
This endpoint provides semantic (neural) web search powered by Exa, proxied through StableEnrich's pay-per-request gateway. Send a natural-language query and receive ranked web results with titles, URLs, published dates, relevance scores, and optional inline content (text, highlights, summaries). An optional `category` parameter filters results by content type — including company pages, research papers, news, GitHub repos, tweets, LinkedIn profiles, PDFs, and financial reports.
The endpoint accepts POST requests with a JSON body. The only required field is `query` (string). Optional parameters include `numResults` (1–100, default 5), `type` (neural, fast, auto, deep), `category`, domain include/exclude lists, date range filters, `includeText`/`excludeText` arrays, and a `contents` object for requesting inline text extraction, highlights, summaries, livecrawl, and subpage expansion. Pagination is handled via `numResults`.
Pricing is $0.01 USD per request, settled via x402 or MPP (Tempo method, pathUSD currency) on each call. No API key or subscription is required — payment is authentication. The endpoint is part of StableEnrich, a unified research API suite by Merit Systems that bundles Exa, Apollo, Firecrawl, Google Maps, Serper, Whitepages, Clado, Minerva, Reddit, Hunter, Influencer, and Cloudflare crawl endpoints behind a single micropayment interface. Payments settle on Base mainnet (EIP-155:8453), Solana, or Tempo.
Capabilities
Use cases
- —AI agent performing open-ended web research on any topic
- —Finding LinkedIn profiles matching a job title and location
- —Discovering companies, research papers, or news articles by semantic query
- —Building candidate pools by searching for people profiles before enrichment
- —Retrieving web pages filtered by category (GitHub, PDF, tweet, financial report)
Fit
Best for
- —AI agents needing autonomous, subscription-free web search
- —Semantic queries where keyword search falls short
- —People discovery via LinkedIn profile category filter before enrichment
- —Research pipelines that fan out across many queries at low per-call cost
Not for
- —High-volume batch search requiring negotiated enterprise pricing
- —Use cases needing Google-specific SERP features (ads, knowledge panels) — use Serper endpoints instead
- —Scraping full page content from a known URL — use Exa Contents ($0.002) or Firecrawl Scrape ($0.0126) instead
Quick start
POST https://stableenrich.dev/api/exa/search
Content-Type: application/json
{
"query": "best practices for building AI agents",
"numResults": 5
}Example
Request
{
"type": "auto",
"query": "hedge fund portfolio manager New York",
"category": "linkedin profile",
"numResults": 10
}Response
{
"results": [
{
"id": "result_001",
"url": "https://www.linkedin.com/in/janedoe",
"score": 0.92,
"title": "Jane Doe - Portfolio Manager - Citadel | LinkedIn",
"author": null,
"publishedDate": "2024-01-15"
},
{
"id": "result_002",
"url": "https://www.linkedin.com/in/johnsmith",
"score": 0.88,
"title": "John Smith - Senior PM - Bridgewater | LinkedIn",
"author": null,
"publishedDate": "2023-11-20"
}
],
"requestId": "abc123",
"searchType": "auto",
"costDollars": {
"total": 0.01
},
"resolvedSearchType": "neural"
}Endpoint
Quality
Full OpenAPI 3.1 schema with detailed request/response definitions, clear pricing ($0.01/request in USD), comprehensive guidance documentation, and multiple documented examples. The endpoint returned 405 on HEAD/GET probes because it only accepts POST, which is expected behavior — the OpenAPI spec confirms POST as the method. The 402 challenge was not directly captured but the x-payment-info block and full MPP protocol details are present in the schema.
Warnings
- —Probe returned 405 because HEAD/GET were tried on a POST-only endpoint; the endpoint is live per the OpenAPI spec and root page (200 status).
- —No direct 402 challenge was captured in the probe bundle, but payment info is fully specified in the OpenAPI x-payment-info block.
Citations
- —Exa Search endpoint price is $0.01 per requesthttps://stableenrich.dev
- —Supports category filter with values: company, research paper, news, pdf, github, tweet, personal site, linkedin profile, financial reporthttps://stableenrich.dev
- —Payments settle on Base mainnet (eip155:8453), Solana, or Tempohttps://stableenrich.dev/docs
- —No API keys or subscriptions required — payment is authenticationhttps://stableenrich.dev
- —StableEnrich reports 364,178 requests/monthhttps://stableenrich.dev