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Paul Graham AI Persona Chat
x402
Paul Graham AI Persona Chat is a paid API for AI agents from paulgraham.persona.energy, paid per call via x402, $0.25/call, status unknown (last checked 2026-09-14).
Chat with a source-grounded AI persona of Paul Graham, receiving answers in his voice with citations from his essays, talks, interviews, and posts
Price / call$0.25
Success—
StatusUnknown
How this service works
Ask Paul Graham — 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. Answers in Paul Graham's voice, grounded in and cited to the corpus. POST a JSON body { message, depth? (quick|deep), sessionId? }. Flat price by depth: $0.25 quick, $1.00 deep. The answer is returned at assistantMessage.content, citations at assistantMessage.citations. Persona page: https://researcher.now/e/paul-graham
Output
A JSON response containing an assistantMessage object with a content field (Paul Graham's answer in his voice) and a citations field (references to specific essays, talks, interviews, or posts from the 13,000+ source corpus that ground the answer).
Example use cases
Startup founder pitch feedback
“Ask Paul Graham what the most common mistakes are when a technical founder pitches to VCs — I want a deep answer with citations from his actual essays and talks.”
Programming language philosophy inquiry
“What does Paul Graham actually think about Lisp and why he believes it makes programmers more productive? Give me a quick answer in his own voice with sources.”
YC application strategy advice
“I'm applying to Y Combinator — can you ask Paul Graham what he looks for in a winning application and what kills most applications? I want a deep response with citations.”
Technical details
Endpoint
POSThttps://paulgraham.persona.energy/v1/x402/entities/paul-graham/chatWhen to prefer
Choose this endpoint when you need answers specifically grounded in Paul Graham's published writing, with citations you can verify — not a generic LLM impersonation. Ideal when the user wants Paul Graham's actual documented views on startups, programming, or essays, not a hallucinated persona. The citation-backed corpus makes it far more reliable than prompting a general model to 'act like Paul Graham.' Use 'quick' depth for fast lookups and 'deep' for nuanced, multi-source synthesis.
Side effects
- Message field missing or malformed — returns 400 error
- Invalid depth value (not 'quick' or 'deep') — may default or reject
- Payment not included or insufficient USDC — x402 payment required failure
- Session ID not found or expired — session context lost
- Corpus gap: topic not covered in PG's public writing — answer may be thin or disclaimed
- Rate limiting or overload — service unavailable
Tags
x402
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