SEC Entity Resolver API: Any issuer string — free lookup

Any issuer string in — ticker, CIK or company name — canonical CIK, ticker, name, the match kind, and ready-to-call URLs for the next step out. One call instead of guessing which resolver to use. Free, no key.

Free — no key, no signup, rate-limited to 60 calls per minute per client.

How do you call it?

GET /v1/sec/resolve — product id sec_resolve. Over MCP, call answerpool_get with product_id=sec_resolve.

curl "https://answerpool.io/v1/sec/resolve?q=NVDA"

Live call: https://answerpool.io/v1/sec/resolve?q=NVDA · JSON sample: /v1/samples/sec_resolve

What does the answer look like?

A representative response, the same static sample served at /v1/samples/sec_resolve.

matches

{
 "as_of": "2026-09-03T14:30:00Z",
 "query": "NVDA",
 "count": 1,
 "matches": [
  {
   "cik": "0001045810",
   "ticker": "NVDA",
   "name": "NVIDIA CORP",
   "match_on": "ticker"
  }
 ],
 "best": {
  "cik": "0001045810",
  "ticker": "NVDA",
  "name": "NVIDIA CORP",
  "match_on": "ticker"
 },
 "next_endpoints": [
  {
   "path": "/v1/sec/entity",
   "url": "/v1/sec/entity?ticker=NVDA",
   "description": "Full entity profile: tickers, exchanges, SIC, incorporation, former names",
   "price_usd": 0.0
  }
 ],
 "note": "One call for any issuer string \u2014 ticker, CIK or company name. next_endpoints are ready-to-call URLs for the best match, each with its price; unlisted filers resolve by name or CIK only.",
 "disclaimer": "Derived from public SEC EDGAR filings; not investment advice.",
 "refresh_after": "2026-09-17T11:15:00.000Z"
}

How fresh is it, and where does the data come from?

The fastest source behind this answer can change every 15 minutes, so every response carries a refresh_after timestamp — right now it would be 2026-09-17T11:15:00.000Z. Schedule the next call on that value rather than on a guess.

• SEC EDGAR (US federal public domain) — upstream: https://efts.sec.gov

Method version 0.1.0 · serving cache 1 day · every response carries a result_id you can resolve at /v1/provenance.

What should you call next?

• sec_entity_profile — Full entity profile: tickers, exchanges, SIC, incorporation, former names (free)

When should you use it?

You have any string identifying an issuer and want identifiers plus where to go next.

What you skip building

• calling three resolvers in turn
• ticker-vs-name guessing
• CIK zero-padding errors

When should you not use it?

Federal award recipients — /v1/funding/recipients resolves those.

Where else can you find this?

• Catalog entry (JSON, free)
• OpenAPI schema — input and output types, prices, the 402 flow
• llms.txt — every product in one plain-text document