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402.com.tr B20 Stablecoin Peg Verification
x402
402.com.tr B20 Stablecoin Peg Verification 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).
Checks whether a B20 stablecoin's declared currency peg matches its actual DEX market price, returning a status of on_peg, depeg_warning, depegged, no_market, or unverifiable_fx.
Price / call$0.03
Success—
StatusUnknown
How this service works
🆕 A B20 Stablecoin's currency() is SELF-DECLARED — the standard verifies nothing. This is the missing check: declared peg vs actual DEX market price. 'Says USD, trades at $0.71' in one call: on_peg / depeg_warning / depegged / no_market (the peg is a pure claim with zero price discovery) / unverifiable_fx for non-USD pegs. Run before settling in any B20 stablecoin.
Output
Returns a peg status enum (on_peg / depeg_warning / depegged / no_market / unverifiable_fx), the stablecoin's declared peg currency, its actual DEX market price, and the deviation amount if applicable — giving a single-call answer on whether the token is safe to settle in.
Example use cases
Example prompt
“Before we settle this payment, check whether the B20 stablecoin at address 0xAbC...123 is actually trading at its declared USD peg or has depegged on the DEX.”
Technical details
Endpoint
GEThttps://402.com.tr/api/x402/b20-pegWhen to prefer
Use this endpoint specifically before settling payments or transfers in any B20 stablecoin, when you need to verify that the token's self-declared currency peg (e.g. USD) reflects actual DEX market reality. Prefer this over generic price feeds when the token is a B20-standard stablecoin and you need a single GO/HOLD peg verdict rather than a raw price.
Side effects
- Invalid or non-B20 contract address returns an error
- Contract address has no DEX liquidity — returns no_market status
- Non-USD pegged tokens return unverifiable_fx status
- Network or RPC errors may cause lookup failure
- Address for a non-stablecoin token may return misleading results
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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