# 2s.io Bank Identifier Resolver

> 2s.io Bank Identifier Resolver is a paid API for AI agents from 2s.io, paid per call via x402, $0.012/call, status unknown (last checked 2026-09-14).

Resolve a bank or financial institution across identifier systems: BIC/SWIFT, LEI, and FDIC certificate number, returning all matched identifiers plus institutional metadata.

## Facts

- Endpoint: GET https://2s.io/api/finance/bank-id-resolve
- Price: $0.012/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/2s-io-bank-identifier-resolver-b1ee7854
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_jmEirIkmufs79Xfqqb595

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 2s-io-bank-identifier-resolver-b1ee7854
```

Example prompt: Can you look up the bank with BIC BOFAUS3N and tell me its LEI, all registered BIC codes, and its FDIC record if one exists?

## When to prefer this

Use this endpoint when you need to cross-reference bank or financial institution identifiers across GLEIF (LEI/BIC) and FDIC registries in a single call. Prefer it over manual lookups when resolving regulatory identifiers for compliance, KYC enrichment, or data normalization workflows. It is particularly well-suited when you have one identifier (e.g. a BIC from a payment instruction) and need the corresponding LEI for GLEIF reporting, or vice versa.

## Known failure modes

- No match found for the provided identifier — returns empty or null result for unrecognized BIC, LEI, or FDIC cert
- FDIC-to-LEI link is name-match only and may be imprecise or missing for some institutions
- Providing more than one identifier type simultaneously is not supported — exactly one must be supplied
- Invalid BIC format (not 8 or 11 characters) returns a validation error
- Invalid LEI format (not 20 characters) returns a validation error
- FDIC certificate number not found in BankFind returns partial result

## How this service works

Resolve a bank / financial institution across identifier systems. Give exactly one of bic (SWIFT/BIC), lei, or fdic_cert and get the others back: LEI, every ISO 9362 BIC the institution registers, the FDIC institution record (when matched), jurisdiction, and a canonical name. The BIC<->LEI bridge is authoritative and live from GLEIF (the LEI record carries the institution BIC list, CC0); anchoring on an FDIC certificate returns the FDIC BankFind record and best-effort name-matches it to a GLEIF LEI (flagged via bridge). There is no free FDIC-cert<->BIC table, so the FDIC<->GLEIF link is name-match only -- per-source status + bridge make any partial resolve explicit. Sources: GLEIF (CC0) + FDIC BankFind (US public domain).

## Output

Returns the resolved institution's LEI, all ISO 9362 BIC codes registered to it, FDIC BankFind record (when available), jurisdiction, canonical institution name, and per-source status flags indicating which bridge links are authoritative vs. name-match estimates.

## 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",
    "queryParams"
   ],
   "properties": {
    "type": {
     "const": "http"
    },
    "method": {
     "const": "GET"
    },
    "queryParams": {
     "properties": {
      "bic": {
       "type": "string",
       "description": "ISO 9362 SWIFT/BIC, 8 or 11 chars, e.g. BOFAUS3N."
      },
      "lei": {
       "type": "string",
       "description": "20-char LEI."
      },
      "fdic_cert": {
       "type": "string",
       "description": "FDIC certificate number, e.g. 3511."
      }
     }
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/2s-io-bank-identifier-resolver-b1ee7854/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from 2s.io](https://www.zero.xyz/host/2s.io/llms.txt)