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Spraay Gateway AI Chat Completions
x402
Spraay Gateway AI Chat Completions is a paid API for AI agents from gateway.spraay.app, paid per call via x402, $0.005/call, status unknown (last checked 2026-09-15).
Send a chat message to any of 200+ AI models via an OpenAI-compatible endpoint, paying per call with USDC.
Price / call$0.005
Success—
StatusUnknown
How this service works
AI chat completions via 200+ models.
Output
Returns an OpenAI-compatible chat completion object containing the model's generated reply, finish reason, token usage stats, and the assistant message content.
Example use cases
Compare responses across multiple models
“I want to test how different AI models answer the same question. Using the Spraay gateway, send this prompt to three different models — 'meta-llama/llama-3-8b-instruct', 'mistralai/mistral-7b-instruct', and 'google/gemma-7b-it': system message 'You are a concise technical writer' and user message 'Explain the difference between TCP and UDP in two sentences.' Show me all three responses so I can compare them.”
Route customer query to Bittensor model
“A customer just submitted a support ticket asking why their crypto transaction is pending. Use the Spraay gateway to send it to the 'mistralai/mixtral-8x7b-instruct' model with a system message of 'You are a helpful crypto support agent' and the user message 'My USDC transfer has been pending for 2 hours — what could be causing this?' and return the reply to the customer.”
Generate code with pay-per-call LLM
“I need a Python function written without committing to a subscription service. Via the Spraay gateway, send a request to 'deepseek-ai/deepseek-coder-6.7b-instruct' with system message 'You are an expert Python developer' and user message 'Write a function that takes a list of dictionaries and returns them sorted by a given key, with error handling if the key doesn't exist.' Pay per call with USDC and give me the result.”
Technical details
Endpoint
POSThttps://gateway.spraay.app/api/v1/chat/completionsWhen to prefer
Choose this endpoint when you need access to a wide variety of AI models (200+) beyond standard OpenAI offerings, especially Bittensor-hosted models, via a familiar OpenAI-compatible interface with per-call USDC micropayments — ideal for agents operating in crypto-native environments or needing model diversity without subscriptions.
Side effects
- Invalid or unsupported model identifier returns an error
- Malformed messages array causes a 400 bad request
- Insufficient USDC balance or failed x402 payment causes authorization failure
- Model temporarily unavailable on Bittensor network causes timeout or 503
- Empty messages array returns a validation error
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| model | string | |
| messages | array |
Tags
x402
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