docs: concept annexation, provider/reference docs, ACT-1 groundwork

Mosaic concepts pages now own the adapted content; source/license metadata under docs/reference/concepts. Adds ACT-1 agent-context planning capture, pinned concept test package + preparation utility, foundation observation notes (durability, evidence, federation, onboarding, workflow), and the #1495 consolidation assessment. TOOLS.md updated for the host-dev launcher.
2026-09-07 14:07:05 -05:00
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+---
+summary: "Use Synthetic's Anthropic-compatible API in OpenClaw"
+read_when:
+  - You want to use Synthetic as a model provider
+  - You need a Synthetic API key or base URL setup
+title: "Synthetic"
+---
+
+[Synthetic](https://synthetic.new) exposes Anthropic-compatible endpoints.
+OpenClaw provides it through the official `@openclaw/synthetic-provider`
+plugin and uses the Anthropic Messages API.
+
+| Property | Value                                 |
+| -------- | ------------------------------------- |
+| Provider | `synthetic`                           |
+| Auth     | `SYNTHETIC_API_KEY`                   |
+| API      | Anthropic Messages                    |
+| Base URL | `https://api.synthetic.new/anthropic` |
+
+## Getting started
+
+<Steps>
+  <Step title="Install the plugin">
+    ```bash
+    openclaw plugins install @openclaw/synthetic-provider
+    openclaw gateway restart
+    ```
+  </Step>
+  <Step title="Get an API key">
+    Get a `SYNTHETIC_API_KEY` from your Synthetic account, or let onboarding
+    prompt you for one.
+  </Step>
+  <Step title="Run onboarding">
+    ```bash
+    openclaw onboard --auth-choice synthetic-api-key
+    ```
+  </Step>
+  <Step title="Verify the default model">
+    Onboarding sets the default model to:
+    ```text
+    synthetic/hf:MiniMaxAI/MiniMax-M3
+    ```
+  </Step>
+</Steps>
+
+<Warning>
+OpenClaw's Anthropic client appends `/v1` to the base URL automatically, so use
+`https://api.synthetic.new/anthropic` (not `/anthropic/v1`). If Synthetic
+changes its base URL, override `models.providers.synthetic.baseUrl`.
+</Warning>
+
+## Config example
+
+```json5
+{
+  env: { vars: { SYNTHETIC_API_KEY: "sk-..." } },
+  agents: {
+    defaults: {
+      model: { primary: "synthetic/hf:MiniMaxAI/MiniMax-M3" },
+      models: { "synthetic/hf:MiniMaxAI/MiniMax-M3": { alias: "MiniMax M3" } },
+    },
+  },
+  models: {
+    mode: "merge",
+    providers: {
+      synthetic: {
+        baseUrl: "https://api.synthetic.new/anthropic",
+        apiKey: "${SYNTHETIC_API_KEY}",
+        api: "anthropic-messages",
+        models: [
+          {
+            id: "hf:MiniMaxAI/MiniMax-M3",
+            name: "MiniMax M3",
+            reasoning: true,
+            input: ["text", "image"],
+            cost: { input: 0, output: 0, cacheRead: 0, cacheWrite: 0 },
+            contextWindow: 262144,
+            maxTokens: 65536,
+          },
+        ],
+      },
+    },
+  },
+}
+```
+
+## Model discovery
+
+With a Synthetic credential, OpenClaw discovers current text models from
+Synthetic's [`/openai/v1/models` API](https://dev.synthetic.new/docs/openai/models).
+Inference still uses the Anthropic Messages API. Newly advertised models, including
+small models and `syn:` aliases, do not need an OpenClaw catalog update.
+
+The live catalog supplies context and output limits, image input, reasoning,
+tool support, and usage-based token prices. Those prices are estimates, not a
+subscription bill. See Synthetic's [current model list](https://dev.synthetic.new/docs/api/models)
+for availability and its recommended aliases.
+
+Offline catalog generation and unavailable or unusable discovery responses use
+the bundled seed models. Your selected model is not changed automatically.
+When you override the inference base URL, OpenClaw skips Synthetic's fixed
+discovery URL so a proxy credential is not sent to Synthetic.
+
+<Tip>
+Model refs use the form `synthetic/<modelId>`. Use
+`openclaw models list --provider synthetic` to inspect your configured models.
+</Tip>
+
+<AccordionGroup>
+  <Accordion title="Model allowlist">
+    If you enable a model allowlist (`agents.defaults.modelPolicy.allow`), add every
+    Synthetic model you plan to use. Models not in the allowlist are hidden
+    from the agent.
+  </Accordion>
+
+  <Accordion title="Base URL override">
+    If Synthetic changes its API endpoint, override the base URL:
+
+    ```json5
+    {
+      models: {
+        providers: {
+          synthetic: {
+            baseUrl: "https://new-api.synthetic.new/anthropic",
+          },
+        },
+      },
+    }
+    ```
+
+    OpenClaw still appends `/v1` automatically.
+
+  </Accordion>
+</AccordionGroup>
+
+## Related
+
+<CardGroup cols={2}>
+  <Card title="Model providers" href="/concepts/model-providers" icon="layers">
+    Provider rules, model refs, and failover behavior.
+  </Card>
+  <Card title="Configuration reference" href="/gateway/configuration-reference" icon="gear">
+    Full config schema including provider settings.
+  </Card>
+  <Card title="Synthetic" href="https://synthetic.new" icon="arrow-up-right-from-square">
+    Synthetic dashboard and API docs.
+  </Card>
+</CardGroup>