FullContact · Rate Limits

Fullcontact Rate Limits

FullContact publishes both its default ceiling and the exact response headers it returns, which is the part an agent needs. The signalling is unusual: rather than reject immediately, FullContact DELAYS a request up to 1000ms to keep it inside the configured limit and reports the delay it applied in X-FullContact-RateDelay. A 429 is only returned when the required delay would exceed 1000ms, and that 429 is itself delayed by the maximum latency so the caller can retry immediately and safely.

Fullcontact Rate Limits is the machine-readable rate-limit profile for FullContact on the APIs.io network, conforming to the API Commons Rate Limits specification.

It captures 1 rate-limit definition.

Tagged areas include Identity Resolution, Customer Data, Data Enrichment, Person API, and Company API.

1 Limits
Identity ResolutionCustomer DataData EnrichmentPerson APICompany APIPrivacy-Safe IdentityCustomer Recognition

Limits

per-account (API key)
6000

Work with this as data

Every rate limit here is available over the APIs.io API and to AI agents over MCP.

MCP server

One button, every client — Claude, Cursor, VS Code and the rest.

https://apis.io/mcp

Tools for rate limits

4 MCP tools reach this
  • find_rate_limitsBrowse and filter every rate limit in the catalog.
  • apis_io_searchSTART HERE — APIs, providers and tags for one query, each with its total.
  • resolveTurn a domain, URL or GitHub org into the provider it belongs to.
  • find_cohortsEvery scored population of providers in the catalog.
All 92 tools →

Call it yourself

curl for this page
This rate limit 
curl "https://apis.io/api/v1/rate-limits/fullcontact-rate-limits"
All rate limits 
curl "https://apis.io/api/v1/rate-limits?limit=25"

Discovery needs no key. Ratings and market analysis are Pro.

Get an API key

Free tier, no form to fill in. Signing in shares your email address with us — we store it to create your key and to recognise you if you sign in with another provider. See our Privacy Policy and Terms.

GitHub Google LinkedIn

A second provider on the same verified email joins the account you already have.