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PaySponge LLM Text Completions
x402
PaySponge LLM Text Completions is a paid API for AI agents from api.paysponge.com, paid per call via x402, $0.010000/call, status unknown (last checked 2026-09-15).
Generates LLM text completions gated by on-chain crypto payments (USDC on Base or Solana SPL tokens) via the x402 payment protocol.
Price / call$0.010000
Success—
StatusUnknown
How this service works
Unlock LLM text completions via PaySponge payments, accepting on-chain USDC (eip155:8453) and Solana SPL token payments with exact, time-limited receipts.
Output
A JSON response containing an LLM-generated text completion, returned after a valid on-chain USDC (Base/EIP-155:8453) or Solana SPL token payment is confirmed via the x402 protocol.
Example use cases
Example prompt
“Using PaySponge's pay-per-call completions endpoint, generate a short product description for a wireless ergonomic keyboard — pay with USDC on Base via the x402 protocol.”
Technical details
Endpoint
POSThttps://api.paysponge.com/x402/purchase/svc_d5zgtpg00dvssgj28/completionsWhen to prefer
Choose this endpoint when your agent needs LLM text completions in a trustless, pay-per-use model using on-chain crypto payments (USDC on Base or Solana SPL tokens) without requiring traditional API keys or subscriptions, particularly in Web3-native or autonomous agent contexts using the x402 protocol.
Side effects
- Payment not provided or expired receipt — 402 Payment Required response
- Insufficient USDC or SPL token balance — payment rejected
- Invalid or malformed POST body — 400 Bad Request
- Time-limited receipt expired before request processed — authentication failure
- Unsupported chain or token — payment method not accepted
Input
{
"input": {
"body": {
"models": [
"gpt-4o-mini"
],
"prompt": "Hello",
"max_tokens": 100
},
"type": "http",
"method": "POST",
"bodyType": "json"
}
}Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
{
"id": "gen-1781036566-HSW2tseOV86mcr1aW5AK",
"model": "openai/gpt-4o-mini",
"usage": {
"cost": 0.0000072,
"is_byok": false,
"cost_details": {
"upstream_inference_cost": 0.0000072,
"upstream_inference_prompt_cost": 0.0000012,
"upstream_inference_completions_cost": 0.000006
},
"service_tier": null,
"total_tokens": 18,
"prompt_tokens": 8,
"completion_tokens": 10,
"prompt_tokens_details": {
"audio_tokens": 0,
"video_tokens": 0,
"cached_tokens": 0,
"cache_write_tokens": 0
},
"completion_tokens_details": {
"audio_tokens": 0,
"image_tokens": 0,
"reasoning_tokens": 0
}
},
"object": "text_completion",
"choices": [
{
"text": "Hello! How can I assist you today?",
"index": 0,
"logprobs": null,
"reasoning": null,
"finish_reason": "stop",
"native_finish_reason": "stop"
}
],
"created": 1781036566,
"provider": "Azure",
"system_fingerprint": "fp_4dcfea0a44"
}Schema · Response
| Field | Type | Description |
|---|---|---|
| idrequired | string | |
| modelrequired | string | |
| usagerequired | object | |
| objectrequired | string | |
| choicesrequired | array | |
| createdrequired | number | |
| providerrequired | string | |
| system_fingerprintrequired | string |
Tags
x402
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