# SEC EDGAR Company CIK Lookup

> SEC EDGAR Company CIK Lookup is a paid API for AI agents from agent402.tools, paid per call via x402, $0.001/call, status unknown (last checked 2026-10-11).

Resolves a US stock ticker symbol to its SEC CIK number, enabling all subsequent EDGAR API calls

## Facts

- Endpoint: GET https://agent402.tools/api/edgar-company-lookup?utm_source=zero.xyz
- Price: $0.001/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-11
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/sec-edgar-company-cik-lookup-a14f3615
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_e8jrouphmpXzYzxPs7rQ5

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability sec-edgar-company-cik-lookup-a14f3615
```

Example prompt: What is the SEC CIK number for Apple — the ticker is AAPL?

## When to prefer this

Use this endpoint as the first step before making any EDGAR API call that requires a CIK. It is the canonical way to translate a familiar ticker symbol (e.g. AAPL, TSLA) into the numeric CIK that SEC EDGAR uses as its primary company identifier. Prefer this over manual lookups or scraping EDGAR search pages.

## Known failure modes

- Unknown or invalid ticker symbol returns a 404 or empty result
- Ticker for a non-US or non-SEC-registered company will not be found
- Recently listed or delisted companies may not appear in the static company_tickers.json snapshot
- Typos in ticker input return no match

## How this service works

Resolve a US stock ticker (e.g. AAPL) to its SEC CIK number, the primitive every other EDGAR call needs. Returns ticker, cik (zero-padded, 0000320193), cikInt (320193) and the registered company name. Backed by SEC's company_tickers.json (public domain). A company name sent where the ticker goes is answered with a 404 that names the likely tickers ("Tesla" -> TSLA).

## Output

Returns the company's SEC CIK number in both zero-padded string format (e.g. 0000320193) and as a plain integer, along with the official registered company name as it appears in EDGAR.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "required": [
      "ticker"
     ],
     "properties": {
      "ticker": {
       "type": "string",
       "description": "US stock ticker, e.g. AAPL"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object",
     "required": [
      "ticker",
      "cik",
      "cikInt",
      "name",
      "source"
     ],
     "properties": {
      "cik": {
       "type": "string"
      },
      "name": {
       "type": "string"
      },
      "cikInt": {
       "type": "integer"
      },
      "source": {
       "type": "string"
      },
      "ticker": {
       "type": "string"
      }
     }
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "cik": "0000320193",
  "name": "Apple Inc.",
  "cikInt": 320193,
  "source": "SEC company_tickers.json",
  "ticker": "AAPL"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/sec-edgar-company-cik-lookup-a14f3615/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from agent402.tools](https://www.zero.xyz/host/agent402.tools/llms.txt)