FreeTier Agent API: contract-abi
https://freetier-agent-api.pages.dev/api/contract-abiOverview
Base/Ethereum contract -> verified ABI, name, compiler, function and event signatures from Sourcify; proxies resolved to the implementation ABI; unverified contracts get bytecode selectors named via OpenChain. No explorer key needed. $0.002 per call, 1 free call per caller.
Protocol
x402
Price
$0.0025
Payment Asset
USD Coin
Payment Network
eip155:8453
Category
crypto
Provider
FreeTier Kits
Source
self-registered
Indexed
2026-10-25 12:21:56
Health
Status
healthy
Latency (p50)
555ms
Uptime (30d)
100.0%
Reliability Score
87/100
Last Checked
2026-10-31 07:01:18
Last Healthy
2026-10-31 07:01:18
Consecutive Failures
0
x402 Payment Validation
Payment Requirements
Valid
Asset Verified
Known USDC
Facilitator
—
Input Schema
{
"method": "GET",
"queryParams": {
"address": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"chain": "base"
},
"type": "http"
}
Output Schema
{
"example": {
"chain": "base",
"contractName": "FiatTokenProxy",
"functions": [
{
"selector": "0xf851a440",
"signature": "admin()"
}
],
"match": "exact_match",
"proxy": {
"implementation": "0x2ce6311ddae708829bc0784c967b7d77d19fd779",
"implementationName": "FiatTokenV2_2",
"implementationVerified": true,
"isProxy": true
},
"verified": true
},
"type": "json"
}