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Providers

Nace

Nace

Drex Max v1.1 answers typed questions with probabilities instead of generating chat text. OpenClaw uses its native OpenAI Decisions-compatible endpoint:

text
POST https://console.nace.ai/v1/decisions

The nace plugin is an unpublished candidate. These instructions require a development checkout containing this plugin and the Decision V2 contract; package metadata alone does not mean it is available on npm or ClawHub.

Setup

From that checkout, install the local plugin:

bash
pnpm openclaw plugins install ./extensions/nacepnpm openclaw models auth login --provider nace --method api-key

Installation applies to a running local Gateway automatically; otherwise it takes effect on the next startup. See Apply changes and inspect.

Enter your Nace API key in the protected prompt. The provider also recognizes NACE_API_KEY in the Gateway environment and normal provider auth profiles. Connecting stores credentials only: it does not replace your primary chat model or select a Decision model.

Select the Decision model explicitly:

json5
{  agents: {    defaults: { decisionModel: "nace/drex-max-v1.1" },  },}

Supported decisions

Use decision_evaluate with contractVersion: 2, or an owned plugin operation calling api.runtime.decisions.evaluateV2. Text and JSON evidence are supported. JSON is serialized as text in the API's input field.

  • Boolean questions return the native probability of true.
  • Choice questions return the selected label and all option probabilities.
  • Score questions return the native fractional, probability-weighted level and its distribution, not a rounded winning level.

OpenClaw preserves reported confidence and token usage. It does not normalize probabilities, recompute scores, or estimate a bill. Confidence is provider-specific; it is not necessarily the selected option's probability. Missing actual cost stays missing.

Image input is not yet exposed by this adapter, even though the upstream model supports images. Images, stable-ID lists, sorting, tags, and box questions are rejected before HTTP. Omit reasoning or use auto; explicit on/off is not supported. There is no chat-completions fallback.

Limits and routing

Drex Max v1.1 documents 512 questions, but this adapter uses the shared OpenAI Decisions transport's conservative limit of 400. Choice and Score questions accept 2–255 options or levels. Its 262,144-token limit covers the whole packed request: state, all questions, formatting, and decision markers. It is not a per-question budget. The upstream serialized-body limit is 4 MiB. The provider rejects oversized requests; OpenClaw does not truncate or split the evidence.

The selected model is pinned to drex-max-v1.1; this adapter does not substitute drex-latest or retired aliases. Nace documents that model availability can vary by environment and API key. A catalog entry does not establish access.

The default base URL is https://console.nace.ai/v1. Normal provider base-URL and prepared request-header overrides apply; the transport appends /decisions. Use only a compatible endpoint you control and credentials intended for it.

Sources: OpenAI Decisions API, Drex Max, and request limits.

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