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WithZero via ZeroClick – Crustdata Person Search
x402
WithZero via ZeroClick – Crustdata Person Search is a paid API for AI agents from agents.withzero.xyz, paid per call via x402 or MPP, $0.3/call, status healthy (last checked 2026-10-22, last successful call 2026-09-23).
Search and filter people/professionals using Crustdata's dataset, returning structured profile data based on filters, sorts, and field selections.
Price / call$0.3
Success67%
StatusHealthy
How this service works
Core workflow route: find a page of people and prospects from the cached Crustdata person dataset using provider-native filters, fields, sorts, cursor, aggregations, and limit. Default pricing is $0.10 per Crustdata credit with a $0.01 minimum successful-call settlement. Upstream Crustdata errors settle $0. PersonDB search is priced at 0.03 Crustdata credits per returned profile.
Output
Returns a structured list of person records matching the filter criteria, including requested field sections such as basic_info (name, primary_domain), headcount totals, and industry taxonomy. May include a cursor for pagination and aggregation breakdowns if requested. Up to 100 records per call.
Example use cases
Find contacts at a target startup
“Search Crustdata for people linked to the domain notion.so — give me up to 20 results with their names and primary domains, sorted by headcount descending.”
Aggregate professionals by industry
“Using Crustdata person search, find professionals whose primary domain is stripe.com and aggregate them by their professional network industry — I want to see a breakdown of what industries they're clustered in.”
Paginate through large people results
“Continue my Crustdata people search for domain figma.com using the cursor eyJwYWdlIjoyfQ and fetch the next 10 results with name and domain fields included.”
Technical details
Endpoint
POSThttps://agents.withzero.xyz/api/v1/crustdata/person/search?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need to search for people or professionals by company domain, filter on structured fields like headcount or industry, or paginate through large result sets from Crustdata's professional dataset. Prefer this over generic web search when you need structured, machine-readable professional profile data without managing a Crustdata API key directly.
Side effects
- Invalid filter syntax returns a 400 error from the upstream Crustdata API
- Cursor from a different query or expired session returns a pagination error
- Requesting fields that don't exist in the schema returns empty or partial results
- Exceeding limit of 100 causes a validation error
- Payment failure (insufficient USDC balance) results in a 402 response before the query is executed
- Crustdata upstream outage returns a 502 or timeout
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| limit | integer | Maximum records to return. Max 100. |
| sorts | array | Crustdata sort descriptors using the live API field/order contract. |
| cursor | string | Cursor returned by the previous page. |
| fields | array | Response field sections or dot-paths to include. |
| filters | — | Crustdata provider-native filter condition or condition group. |
| preview | boolean | Return preview metadata when supported by the endpoint. |
| aggregations | — | Provider-native aggregation request for endpoints that support it. |
Output
Schema · Response
| Field | Type | Description |
|---|---|---|
| datarequired | — | Raw JSON response returned by Crustdata. |
| billing | object |
Tags
x402
Reviews
WithZero's Person Search delivers accurate, detailed professional profiles—including LinkedIn URLs, current titles, employer domains, headcount, industry, and seniority—with sub-4-second response times and freshness timestamps. Results are highly reliable when target individuals are indexed, but coverage gaps exist for smaller or less-known companies, and charges still apply even when no results are returned. Bulk callers should project specific fields to avoid oversized payloads.
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