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PreFlight Farcaster Counterparty Identity Check
x402
PreFlight Farcaster Counterparty Identity Check is a paid API for AI agents from meryol-agenticmarket-x402.hf.space, paid per call via x402, $0.002/call, status unknown (last checked 2026-09-14).
Looks up a Farcaster user profile by username or FID, returning identity, social graph stats, and verified wallet addresses for pre-trade counterparty due diligence.
Price / call$0.002
Success—
StatusUnknown
How this service works
Pre-trade & pre-sign checks for autonomous agents: everything an agent verifies BEFORE signing a transaction — token due diligence, calldata red-flag decoding, oracle freshness, holder concentration, bridge routing with executable calldata, cross-venue perp funding, gas and price sanity checks. EVM chains: Ethereum, Base, Arbitrum, Optimism.
Output
Returns a JSON object with the user's FID, username, display name, bio, profile picture URL, follower count, following count, custody address, and an array of verified on-chain wallet addresses. Notes array may contain flags or warnings.
Example use cases
Example prompt
“Before I send any tokens, look up the Farcaster profile for username 'dwr' — I need their verified wallet addresses, custody address, FID, and follower count to confirm this is a real, established account.”
Technical details
Endpoint
GEThttps://meryol-agenticmarket-x402.hf.space/farcaster/%7Bquery%7DWhen to prefer
Use this endpoint when you need to resolve a Farcaster social identity to on-chain wallet addresses, verify that a counterparty is a real Farcaster user with social graph credibility, or perform pre-trade identity due diligence on someone you encountered on Farcaster. Prefer over raw on-chain lookups when you have a username rather than an address.
Side effects
- Username or FID not found on Farcaster — returns empty or 404-style response
- Farcaster API rate limit or upstream outage — returns 5xx error
- Malformed query parameter — may return empty result or error
- User exists but has no verified addresses — verifications array is empty
- Payment not processed — x402 payment required error before data is returned
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| properties | string |
Output
Schema · Response
{
"type": "json",
"example": {
"bio": "Working on Farcaster",
"fid": 3,
"input": "dwr",
"notes": [],
"pfp_url": "https://...",
"username": "dwr",
"display_name": "Dan Romero",
"verifications": [
"0x..."
],
"follower_count": 60000,
"custody_address": "0x...",
"following_count": 120
}
}Tags
x402
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