# B20 Stablecoin Profile Lookup

> B20 Stablecoin Profile Lookup is a paid API for AI agents from 402.com.tr, paid per call via x402, $0.03/call, status unknown (last checked 2026-09-14).

Retrieves the declared peg currency, issuance profile (supply/cap), and control powers (seize/freeze/pause/uncapped-mint) for a B20 stablecoin token by address.

## Facts

- Endpoint: GET https://402.com.tr/api/x402/b20-stablecoin
- Price: $0.03/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/b20-stablecoin-profile-lookup-82a57b6a
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_2WkjGRB3XYT7hv-2RPa21

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 b20-stablecoin-profile-lookup-82a57b6a
```

Example prompt: Can you look up the stablecoin profile for this B20 token at address 0xAbC123... on Base — tell me what fiat currency it claims to be pegged to, its supply and cap, and whether anyone has freeze, seize, or uncapped-mint powers over it?

## When to prefer this

Use this endpoint when an agent needs a one-call summary of a B20 stablecoin's identity and risk profile before settling a payment or routing funds through it — specifically when you need to know the declared peg currency, supply constraints, and who holds control powers (freeze/seize/pause). Prefer this over general token metadata endpoints when the token is confirmed to be a B20 stablecoin and control-authority information is needed.

## Known failure modes

- Invalid or non-B20 contract address returns an error or empty profile
- Address is a non-stablecoin B20 asset token — currency() may not be present
- Contract not deployed on Base returns a lookup failure
- Rate limit or payment failure returns 402 or 429 error
- Address is valid ERC-20 but does not implement B20 stablecoin interface

## How this service works

🆕 B20 Stablecoin tokens self-declare a fiat currency code (currency() → USD, EUR, …). Reads that declared peg alongside the issuance profile (supply, cap) and control powers (seize/freeze/pause/uncapped-mint) — a one-call 'what is this stablecoin and who controls it' for agents settling in B20 stablecoins. The currency code is the issuer's claim, not attested backing.

## Output

Returns the token's self-declared fiat currency code (e.g. USD, EUR), issuance details (current supply, supply cap), and control authority flags indicating whether seize, freeze, pause, or uncapped-mint powers exist — giving a single-call governance and identity snapshot of the B20 stablecoin.

## 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"
    },
    "pathParams": {
     "type": "object"
    },
    "queryParams": {
     "type": "object",
     "required": [
      "address"
     ],
     "properties": {
      "address": {
       "type": "string",
       "description": "B20 Stablecoin address"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/b20-stablecoin-profile-lookup-82a57b6a/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from 402.com.tr](https://www.zero.xyz/host/402.com.tr/llms.txt)