the402 endpoint detail

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agent402.tools api fc-cast-search

https://agent402.tools/api/fc-cast-search

answers 402

Search Farcaster casts by keyword (literal, semantic or hybrid match), newest first, optionally filtered to one author or channel. Returns compact casts: hash, author (fid, username, follower count), text, timestamp, channel, reactions, reply count, embed URLs. Use for mention monitoring, sentiment sampling, or finding discussion of a token, product or topic.

We sent a real POST request to this endpoint and it answered 402 with payment requirements we could parse.
Price
$0.005
Network
base
Pay to
0xaBF4FAbd7c416fB67202E5f9002389Fc75e2a9D0
Spec dialect
v2 (declares x402Version 2)
Transport
PAYMENT-REQUIRED header
HTTP method
POST
Response latency
113 ms
Payment options
13 usable of 13
Last checked
2026-09-06T01:16:44.681Z (2h ago)
Category
finance-crypto

Re-check it yourself:
curl "https://api.the402.dev/validate?url=https%3A%2F%2Fagent402.tools%2Fapi%2Ffc-cast-search"