adolf/docs/providers/stepfun.md

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Use StepFun models with OpenClaw	You want StepFun models in OpenClaw You need StepFun setup guidance	StepFun

StepFun ships as an external official plugin (@openclaw/stepfun-provider) with two provider ids:

• stepfun for the standard endpoint
• stepfun-plan for the Step Plan endpoint

Standard and Step Plan are **separate providers** with different endpoints and model ref prefixes (`stepfun/...` vs `stepfun-plan/...`). Use a China key with the `.com` endpoints and a global key with the `.ai` endpoints.

Install plugin

openclaw plugins install @openclaw/stepfun-provider
openclaw gateway restart

Region and endpoint overview

Endpoint	China (.com)	Global (.ai)
Standard	https://api.stepfun.com/v1	https://api.stepfun.ai/v1
Step Plan	https://api.stepfun.com/step_plan/v1	https://api.stepfun.ai/step_plan/v1

Auth env var: STEPFUN_API_KEY

Built-in catalog

Standard (stepfun):

Model ref	Context	Max output	Notes
stepfun/step-3.5-flash	262,144	65,536	Default standard model

Step Plan (stepfun-plan):

Model ref	Context	Max output	Notes
stepfun-plan/step-3.5-flash	262,144	65,536	Default Step Plan model
stepfun-plan/step-3.5-flash-2603	262,144	65,536	Additional Step Plan model

Getting started

Best for general-purpose use via the standard StepFun endpoint.

<Steps>
  <Step title="Choose your endpoint region">
    | Auth choice                    | Endpoint                     | Region        |
    | -------------------------------- | ----------------------------- | -------------- |
    | `stepfun-standard-api-key-intl` | `https://api.stepfun.ai/v1`  | International |
    | `stepfun-standard-api-key-cn`   | `https://api.stepfun.com/v1` | China          |
  </Step>
  <Step title="Run onboarding">
    ```bash
    openclaw onboard --auth-choice stepfun-standard-api-key-intl
    ```

    China endpoint:

    ```bash
    openclaw onboard --auth-choice stepfun-standard-api-key-cn
    ```
  </Step>
  <Step title="Non-interactive alternative">
    ```bash
    openclaw onboard --auth-choice stepfun-standard-api-key-intl \
      --stepfun-api-key "$STEPFUN_API_KEY"
    ```
  </Step>
  <Step title="Verify models are available">
    ```bash
    openclaw models list --provider stepfun
    ```
  </Step>
</Steps>

Default model: `stepfun/step-3.5-flash`

Best for the Step Plan reasoning endpoint.

<Steps>
  <Step title="Choose your endpoint region">
    | Auth choice                 | Endpoint                                | Region        |
    | ------------------------------ | ------------------------------------------ | -------------- |
    | `stepfun-plan-api-key-intl` | `https://api.stepfun.ai/step_plan/v1`  | International |
    | `stepfun-plan-api-key-cn`   | `https://api.stepfun.com/step_plan/v1` | China          |
  </Step>
  <Step title="Run onboarding">
    ```bash
    openclaw onboard --auth-choice stepfun-plan-api-key-intl
    ```

    China endpoint:

    ```bash
    openclaw onboard --auth-choice stepfun-plan-api-key-cn
    ```
  </Step>
  <Step title="Non-interactive alternative">
    ```bash
    openclaw onboard --auth-choice stepfun-plan-api-key-intl \
      --stepfun-api-key "$STEPFUN_API_KEY"
    ```
  </Step>
  <Step title="Verify models are available">
    ```bash
    openclaw models list --provider stepfun-plan
    ```
  </Step>
</Steps>

Default model: `stepfun-plan/step-3.5-flash`
Alternate model: `stepfun-plan/step-3.5-flash-2603`

A single auth flow writes region-matched profiles for both stepfun and stepfun-plan, so both surfaces are discovered together after one onboarding run.

Advanced configuration

```json5 { env: { STEPFUN_API_KEY: "your-key" }, agents: { defaults: { model: { primary: "stepfun/step-3.5-flash" } } }, models: { mode: "merge", providers: { stepfun: { baseUrl: "https://api.stepfun.ai/v1", api: "openai-completions", apiKey: "${STEPFUN_API_KEY}", models: [ { id: "step-3.5-flash", name: "Step 3.5 Flash", reasoning: true, input: ["text"], cost: { input: 0, output: 0, cacheRead: 0, cacheWrite: 0 }, contextWindow: 262144, maxTokens: 65536, }, ], }, }, }, } ``` ```json5 { env: { STEPFUN_API_KEY: "your-key" }, agents: { defaults: { model: { primary: "stepfun-plan/step-3.5-flash" } } }, models: { mode: "merge", providers: { "stepfun-plan": { baseUrl: "https://api.stepfun.ai/step_plan/v1", api: "openai-completions", apiKey: "${STEPFUN_API_KEY}", models: [ { id: "step-3.5-flash", name: "Step 3.5 Flash", reasoning: true, input: ["text"], cost: { input: 0, output: 0, cacheRead: 0, cacheWrite: 0 }, contextWindow: 262144, maxTokens: 65536, }, { id: "step-3.5-flash-2603", name: "Step 3.5 Flash 2603", reasoning: true, input: ["text"], cost: { input: 0, output: 0, cacheRead: 0, cacheWrite: 0 }, contextWindow: 262144, maxTokens: 65536, }, ], }, }, }, } ``` - `step-3.5-flash-2603` is currently exposed only on `stepfun-plan`. - Use `openclaw models list` and `openclaw models set <provider/model>` to inspect or switch models.

Related

Overview of all providers, model refs, and failover behavior. Full config schema for providers, models, and plugins. How to choose and configure models. StepFun API key management and documentation.