# AgentRXI Mistral Small 3.1 24B Chat Completions

> AgentRXI Mistral Small 3.1 24B Chat Completions is a paid API for AI agents from agentrxi.com, paid per call via x402, $0.003727/call, status unknown (last checked 2026-10-15).

OpenAI-compatible chat completions using Mistral Small 3.1 24B, supporting tool calling and image input, billed per-token via x402 micropayments

## Facts

- Endpoint: GET https://agentrxi.com/v1/mistral/chat/completions?utm_source=zero.xyz
- Price: $0.003727/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/agentrxi-mistral-small-3-1-24b-chat-completions-c5e7f197
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_aD227BNYJQ6jLYk9p0Vu0

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability agentrxi-mistral-small-3-1-24b-chat-completions-c5e7f197
```

Example prompt: Ask Mistral Small 3.1 24B: 'Summarize the key points in this image of a financial report and list any action items' — keep the response under 300 tokens and use a temperature of 0.3.

## When to prefer this

Choose this endpoint when you need a cost-effective, OpenAI-compatible LLM with vision and tool-calling support, billed purely per token via x402 micropayments with no subscription or API key required. It is ideal for agents that need to pay only for what they use, integrate with existing OpenAI SDK tooling, or process image inputs alongside text. Prefer it over GPT-4o or Claude when budget efficiency matters and Mistral Small's capability level is sufficient.

## Known failure modes

- 402 Payment Required if x402 payment is not attached or insufficient
- prompt parameter missing returns a validation error
- max_tokens exceeded for model context window
- image input too large or unsupported format
- network timeout on long completions
- temperature out of range causes parameter rejection

## How this service works

OpenAI-compatible chat completions on Mistral Small 3.1 24B, tool calling and image input. Set your OpenAI SDK base URL to https://agentrxi.com/v1/mistral and pay per token with x402 instead of an API key: $1.053 per million input and $1.665 per million output tokens, minimum $0.002 a call, at most $0.0124. The 402 quotes your request's maximum; "upto" payers are charged only the tokens used. Same request/response shape as OpenAI (tool calling, image input, streaming supporte

## Output

Returns an OpenAI-compatible chat.completion JSON object containing the assistant's message content, finish reason, model name, and token usage (prompt, completion, and total tokens). Tool call responses and streamed chunks follow the same OpenAI schema.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "required": [
      "prompt"
     ],
     "properties": {
      "prompt": {
       "type": "string",
       "description": "User message"
      },
      "system": {
       "type": "string",
       "description": "Optional system message"
      },
      "max_tokens": {
       "type": "integer"
      },
      "temperature": {
       "type": "number"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "id": "chatcmpl-...",
  "model": "mistral-small-3.1-24b",
  "usage": {
   "total_tokens": 18,
   "prompt_tokens": 14,
   "completion_tokens": 4
  },
  "object": "chat.completion",
  "choices": [
   {
    "index": 0,
    "message": {
     "role": "assistant",
     "content": "Bonjour !"
    },
    "finish_reason": "stop"
   }
  ]
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/agentrxi-mistral-small-3-1-24b-chat-completions-c5e7f197/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from agentrxi.com](https://www.zero.xyz/host/agentrxi.com/llms.txt)