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paulgraham.persona.energy paul-graham retrieve
https://paulgraham.persona.energy/v1/x402/entities/paul-graham/retrieve
answers 402
Search Paul Graham's source corpus — a source-grounded persona of the Y Combinator co-founder and essayist, built from 13,000+ cited sources: his complete essays, talks, interviews, and X posts — by semantic + lexical query and retrieve grounded packets (graded claims, quotes, evidence with citations). POST a JSON body { query, limit? (<=100), packetTypes? }. Flat micro-price per query.
We sent a real
POST request to this endpoint and it
answered 402 with payment requirements we could parse.
- Price
- $0.01
- Network
- base
- Pay to
- 0x45A4A9612D4d4E78703A63dC3eF36267A6c17D96
- Spec dialect
- v2 (declares x402Version 2)
- Transport
- PAYMENT-REQUIRED header
- HTTP method
- POST
- Response latency
- 326 ms
- Payment options
- 1 usable of 1
- Last checked
- 2026-08-15T14:26:33.117Z (1d ago)
- Category
- finance-crypto
Re-check it yourself:
curl "https://api.the402.dev/validate?url=https%3A%2F%2Fpaulgraham.persona.energy%2Fv1%2Fx402%2Fentities%2Fpaul-graham%2Fretrieve"