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Messari AI Chat Completion
x402
Messari AI Chat Completion is a paid API for AI agents from api.messari.io, paid per call via x402, $0.25/call, status unknown (last checked 2026-09-15).
Answers natural language questions about cryptocurrency and crypto markets using Messari's AI, returning formatted responses with configurable verbosity.
Price / call$0.25
Success—
StatusUnknown
How this service works
MessariAI chat completion
Output
An AI-generated response in markdown format answering the user's crypto-related question, drawing on Messari's crypto intelligence data. The response reflects the requested verbosity level (e.g. 'normal') and is structured for readability.
Example use cases
Example prompt
“Ask Messari's AI to explain what Ethereum's proof-of-stake transition means for validators, and give me a normal-length markdown-formatted answer.”
Technical details
Endpoint
POSThttps://api.messari.io/ai/v2/chat/completionsWhen to prefer
Use this endpoint when you need conversational, AI-generated answers about cryptocurrency topics backed by Messari's proprietary research data. Prefer this over generic LLMs when the question requires up-to-date crypto intelligence, asset data, funding information, or Messari-specific research context. Best for open-ended questions that benefit from narrative explanation rather than structured data lookups.
Side effects
- Payment Required (402) if x402 payment header is missing or insufficient — endpoint requires 250000 units USDC ($0.25) per call
- Invalid message format if messages array is malformed or missing required role/content fields
- Timeout if maxTimeoutSeconds (60s) is exceeded
- Unsupported response_format value returns error
- Empty or null messages array results in bad request
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| disable_tables | boolean | |
| inline_citations | boolean | |
| messagesrequired | array | |
| response_format | string | |
| stream | boolean | |
| verbosity | string |
Output
Schema · Response
{
"example": {
"data": {
"messages": [
{
"role": "assistant",
"content": "Bitcoin recently surpassed $100,000 for the first time..."
}
]
}
}
}Tags
x402
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