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Proofwork Base Token Snapshot
x402
Proofwork Base Token Snapshot is a paid API for AI agents from proofwork-the402-webhook.phase-voice.workers.dev, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-15).
Returns a real-time price snapshot and evidence links for any ERC-20 token on Base mainnet, including USD price, symbol, and verifiable source URLs.
Price / call$0.01
Success—
StatusUnknown
How this service works
Small non-cyber evidence and data APIs payable per request with x402 on Base.
Output
A JSON object containing the token's symbol, contract address, current USD price, network name ('Base Mainnet'), and an array of evidence URLs pointing to the underlying data sources (e.g. GeckoTerminal API).
Example use cases
DeFi portfolio price check
“What's the current USD price of the token at 0x4200000000000000000000000000000000000006 on Base? I need the price and where it came from so I can verify it.”
Automated token price monitoring
“Fetch me a price snapshot for the Base token at 0x833589fcd6edb6e08f4c7c32d4f71b54bda02913 — I want the symbol, USD price, and the evidence sources used.”
Pre-trade price verification
“Before I execute this swap, can you pull the current verified USD price for the token at 0x50c5725949a6f0c72e6c4a641f24049a917db0cb on Base mainnet?”
Technical details
Endpoint
GEThttps://proofwork-the402-webhook.phase-voice.workers.dev/v1/base-token-snapshotWhen to prefer
Choose this endpoint when you need a verifiable, evidence-backed price snapshot for a specific ERC-20 token on Base mainnet and want source URLs included for auditability. Prefer it over generic price APIs when you need provenance evidence or are building on the Base ecosystem specifically. It costs $0.01 USDC per call via x402, making it suitable for low-frequency lookups or per-transaction checks rather than high-frequency streaming.
Side effects
- Invalid or malformed token address (not matching 0x + 40 hex chars) returns a validation error
- Token not listed on GeckoTerminal / no market data available returns an empty or error response
- Network or upstream GeckoTerminal API downtime causes a failed fetch
- Payment failure via x402 protocol blocks the request before execution
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"token": {
"symbol": "WETH",
"address": "0x4200000000000000000000000000000000000006",
"price_usd": 1876.82
},
"report": "base_token_snapshot",
"network": "Base Mainnet",
"evidence": [
"https://api.geckoterminal.com/api/v2/networks/base/tokens/0x4200000000000000000000000000000000000006"
]
}
}Tags
x402
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