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Chat Completions Validation Schema #489

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zdql
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@zdql zdql commented Sep 29, 2025

Returns a formalized Zod schema detailing what models can be passed to the chat completions endpoint, and returns this in the "accepts" array on the 402 payment challenge.

Allows a user hitting the endpoint to correctly format a request to receive a chat model response from the echo router.

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zdql commented Sep 29, 2025 •
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Example response:

curl -X POST http://localhost:3070/v1/chat/completions

{
  "x402Version": 1,
  "error": "Payment Required",
  "accepts": [
    {
      "scheme": "exact",
      "network": "base",
      "maxAmountRequired": "20000000",
      "resource": "http://localhost:3070//v1/chat/completions",
      "description": "Echo chat completions endpoint.",
      "mimeType": "application/json",
      "payTo": "http://localhost:3070//api/v1/base/payment-link?amount=20000000",
      "maxTimeoutSeconds": 5000,
      "asset": "0x833589fcd6edb6e08f4c7c32d4f71b54bda02913",
      "outputSchema": {
        "input": {
          "type": "http",
          "method": "POST",
          "discoverable": true,
          "body": {
            "type": "object",
            "properties": {
              "model": {
                "type": "string",
                "enum": [
                  "gpt-3.5-turbo",
                  "gpt-3.5-turbo-0125",
                  "gpt-3.5-turbo-1106",
                  "gpt-4",
                  "gpt-4-0125-preview",
                  "gpt-4-0613",
                  "gpt-4-1106-preview",
                  "gpt-4-turbo",
                  "gpt-4-turbo-2024-04-09",
                  "gpt-4-turbo-preview",
                  "gpt-4.1",
                  "gpt-4.1-2025-04-14",
                  "gpt-4.1-mini",
                  "gpt-4.1-mini-2025-04-14",
                  "gpt-4.1-nano",
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                  "gpt-4o",
                  "gpt-4o-2024-05-13",
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                  "gpt-4o-2024-11-20",
                  "gpt-4o-mini",
                  "gpt-4o-mini-2024-07-18",
                  "gpt-5",
                  "gpt-5-2025-08-07",
                  "gpt-5-chat-latest",
                  "gpt-5-mini",
                  "gpt-5-mini-2025-08-07",
                  "gpt-5-nano",
                  "gpt-5-nano-2025-08-07",
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}

@vercel vercel bot temporarily deployed to Preview – component-registry September 29, 2025 19:42 Inactive
@rsproule rsproule changed the base branch from shafu/x402-payment-required to master October 13, 2025 18:26
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