# SiteCheck Securities ID Lookup

> SiteCheck Securities ID Lookup is a paid API for AI agents from api.sitecheck-api.workers.dev, paid per call via x402, $0.002/call, status unknown (last checked 2026-10-15).

Looks up securities (equities, ETFs, bonds, etc.) by ISIN, CUSIP, or ticker using OpenFIGI and GLEIF, returning FIGI identifiers, issuer LEI, and multi-exchange listings.

## Facts

- Endpoint: GET https://api.sitecheck-api.workers.dev/api/securities/id?utm_source=zero.xyz
- Price: $0.002/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/sitecheck-securities-id-lookup-ff010806
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_u4uoewsZzBmAx_H86LDAn

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 sitecheck-securities-id-lookup-ff010806
```

Example prompt: Can you look up the security details for ISIN US0378331005 — I need the FIGI identifiers, issuer LEI, and which exchanges it trades on?

## When to prefer this

Use this endpoint when you need to resolve financial security identifiers — ISIN, CUSIP, or ticker — to canonical FIGI codes, issuer LEI numbers, or multi-exchange listings. It is ideal for compliance workflows requiring LEI enrichment, order routing systems needing FIGI, or any pipeline that must map between different financial identifier standards. Prefer this over generic financial data APIs when you specifically need FIGI/GLEIF data sourced from OpenFIGI and GLEIF.

## Known failure modes

- Invalid or malformed ISIN (not 12 characters) returns an error
- Unknown ISIN/CUSIP/ticker not found in OpenFIGI returns empty securities array
- Ambiguous ticker without exchange code may return multiple exchange listings
- OpenFIGI or GLEIF upstream service unavailability causes lookup failure
- Payment required (x402) if USDC payment is not provided

## How this service works

A security by ISIN, CUSIP or ticker (with an optional exchange code): its OpenFIGI id, name, ticker, exchange, security type and market sector, and for an ISIN the issuer's LEI and legal name from GLEIF. ISIN and CUSIP check digits are verified before the call. Attribution: FIGI by OpenFIGI; LEI by GLEIF.

## Output

Returns a JSON object containing the original query parameters, a list of matching securities (each with FIGI, name, ticker, exchange, market sector, and security type), the issuer's LEI and name sourced from GLEIF, the timestamp of the check, and data attribution and disclaimer notices.

## 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": [],
     "properties": {
      "isin": {
       "type": "string",
       "description": "ISIN, 12 characters"
      },
      "cusip": {
       "type": "string",
       "description": "CUSIP, 9 characters"
      },
      "ticker": {
       "type": "string",
       "description": "Ticker, e.g. AAPL"
      },
      "exchange": {
       "type": "string",
       "description": "Optional OpenFIGI exchange code, e.g. US or LN"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "query": {
   "isin": "US0378331005",
   "cusip": null,
   "ticker": null,
   "exchange": null
  },
  "issuer": {
   "lei": "HWUPKR0MPOU8FGXBT394",
   "name": "Apple Inc."
  },
  "source": "OpenFIGI mapping API; GLEIF LEI records (issuer, by ISIN)",
  "checkedAt": "2026-10-14T07:00:27.149Z",
  "disclaimer": "Information only, not financial advice.",
  "securities": [
   {
    "figi": "BBG000B9XRY4",
    "name": "APPLE INC",
    "ticker": "AAPL",
    "exchange": "US",
    "marketSector": "Equity",
    "securityType": "Common Stock"
   },
   {
    "figi": "BBG000B9XSK7",
    "name": "APPLE INC",
    "ticker": "AAPL",
    "exchange": "UA",
    "marketSector": "Equity",
    "securityType": "Common Stock"
   },
   {
    "figi": "BBG000B9XT70",
    "name": "APPLE INC",
    "ticker": "AAPL",
    "exchange": "UC",
    "marketSector": "Equity",
    "securityType": "Common Stock"
   }
  ],
  "attribution": "FIGI: OpenFIGI (Bloomberg). LEI: GLEIF (CC0)"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/sitecheck-securities-id-lookup-ff010806/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.sitecheck-api.workers.dev](https://www.zero.xyz/host/api.sitecheck-api.workers.dev/llms.txt)