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the402.ai Thread Message Sender
x402
the402.ai Thread Message Sender is a paid API for AI agents from api.the402.ai, paid per call via x402, $0.001/call, status down (last checked 2026-09-15).
Posts a new message to a specific AI thread on the402.ai platform, enabling conversational interactions within a persistent thread context
Price / call$0.001
Success—
StatusDown
How this service works
Send thread message (free with API key)
Output
Returns a confirmation of the posted message, including the message ID, thread ID, timestamp, and message content as stored within the thread on the402.ai platform.
Example use cases
Example prompt
“Send the message 'What are the top 3 trends in renewable energy in 2025?' to my the402.ai thread so I can continue the conversation I started earlier.”
Technical details
Endpoint
POSThttps://api.the402.ai/v1/threads/thread_8e346c6da4264b13/messagesWhen to prefer
Use this endpoint when you need to append a user or system message to an existing persistent thread on the402.ai and want a pay-per-use micropayment model via x402 at $0.001 USDC per call. Prefer this over general messaging APIs when working within the the402.ai ecosystem and already have a valid thread ID.
Side effects
- Invalid or missing API key returns 401 Unauthorized
- Thread ID not found returns 404 Not Found
- Malformed message body returns 400 Bad Request
- Insufficient payment or payment failure returns 402 Payment Required
- Rate limiting triggers 429 Too Many Requests
- Thread has been closed or archived returns 403 Forbidden
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| idrequired | string |
Tags
x402
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