# FDIC Bank Institutions Lookup by State

> FDIC Bank Institutions Lookup by State is a paid API for AI agents from api.chainmarket-api.workers.dev, paid per call via x402, $0.002/call, status unknown (last checked 2026-10-24).

Returns a list of FDIC-insured bank institutions in a given US state, including name, address, coordinates, charter class, and insurance date.

## Facts

- Endpoint: GET https://api.chainmarket-api.workers.dev/api/finance/fdic-bank?utm_source=zero.xyz
- Price: $0.002/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-24
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/fdic-bank-institutions-lookup-by-state-7bf0e467
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_Lm3_i60jgfJcEKcDAcyfG

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 fdic-bank-institutions-lookup-by-state-7bf0e467
```

Example prompt: Can you pull up the list of FDIC-insured bank institutions in California — show me up to 20 of them with their addresses and charter details?

## When to prefer this

Use this endpoint when you need official FDIC-sourced data on insured banking institutions filtered by US state, including location coordinates, charter class, and insurance history. Prefer this over generic bank directories when regulatory accuracy and FDIC certification status are required, or when you need geospatial bank data for a specific state. It is pay-per-call with no API key required, making it ideal for on-demand agent workflows.

## Known failure modes

- Missing required 'state' parameter returns an error
- State name not matching FDIC format (e.g. 'CA' instead of 'California') may return empty results or error
- Limit outside 1–50 range may be rejected or clamped
- Network or upstream FDIC API unavailability causes call failure (no charge on failure)
- Non-US states or territories may return zero results

## How this service works

FDIC-insured bank institutions in one US state from the FDIC BankFind API: name, certificate number, address, ZIP, charter class and whether the bank is active. Institution data only; no financial statements.

## Output

A JSON object containing the queried US state, total number of institutions found, the FDIC source URL, a timestamp, and an array of institution objects each with ZIP code, FDIC certificate number, institution name, active status, street address, latitude, longitude, state name, insured date, and charter class.

## 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": [
      "state"
     ],
     "properties": {
      "limit": {
       "type": "string",
       "description": "How many institutions, 1 to 50 (default 10)"
      },
      "state": {
       "type": "string",
       "description": "US state name as FDIC writes it, e.g. Maine, California"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "state": "Maine",
  "total": 114,
  "source": "https://api.fdic.gov/banks/institutions",
  "checkedAt": "2026-10-23T09:36:12.641Z",
  "institutions": [
   {
    "zip": "04073",
    "cert": 10,
    "name": "Northeast Bank of Sanford",
    "active": false,
    "address": "8 Washington Street",
    "latitude": 43.43898,
    "longitude": -70.774916,
    "stateName": "Maine",
    "insuredDate": "01/01/1934",
    "charterClass": "SM"
   },
   {
    "zip": "04736",
    "cert": 11369,
    "name": "Aroostook Trust Company",
    "active": false,
    "address": "Sweden Street",
    "latitude": 46.886421,
    "longitude": -68.01389,
    "stateName": "Maine",
    "insuredDate": "01/01/1934",
    "charterClass": "NM"
   }
  ]
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/fdic-bank-institutions-lookup-by-state-7bf0e467/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.chainmarket-api.workers.dev](https://www.zero.xyz/host/api.chainmarket-api.workers.dev/llms.txt)