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B20 Activation Status Checker
x402
B20 Activation Status Checker is a paid API for AI agents from agent402.tools, paid per call via x402, $0.002/call, status unknown (last checked 2026-09-14).
Queries the Base blockchain Activation Registry precompile to check whether B20 features (b20_asset and/or b20_stablecoin) are live on Base mainnet
Price / call$0.002
Success—
StatusUnknown
How this service works
Is B20 live on Base mainnet? Queries the Activation Registry precompile for base.b20_asset and base.b20_stablecoin (or a custom feature id). Honest pre-launch too: reports not-activated until the registry flips. ?feature=base.b20_asset (optional)
Output
Returns the activation status of one or both B20 features (base.b20_asset and base.b20_stablecoin) as reported by the Base blockchain Activation Registry precompile — indicating whether each feature is activated or not yet live, with honest pre-launch reporting (not-activated until the registry actually flips).
Example use cases
Example prompt
“Is B20 live on Base mainnet yet? Check the activation registry for both b20_asset and b20_stablecoin and tell me if either has been activated.”
Technical details
Endpoint
GEThttps://agent402.tools/api/b20-activation-checkWhen to prefer
Use this endpoint when you need a reliable, honest on-chain source of truth for whether B20 features are activated on Base mainnet — especially useful pre-launch when you want accurate 'not yet activated' status rather than speculation. Prefer this over off-chain status pages or social media signals when you need cryptographically verifiable activation state from the registry itself.
Side effects
- Invalid feature ID string returns error or unknown feature response
- Network connectivity issues to Base mainnet cause lookup failure
- Registry precompile unavailable leads to timeout or 5xx error
- Feature not yet in registry returns not-activated (expected behavior, not an error)
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| properties | string |
Output
Schema · Response
{
"type": "json",
"example": {
"features": [
{
"feature": "base.b20_asset",
"activated": false,
"featureId": "0xcdcc…"
}
],
"registry": "0x8453000000000000000000000000000000000001"
}
}Tags
x402
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