<!-- Generated by scripts/gen-website-api.ts — do not edit by hand. Run `pnpm run gen-website-api` to regenerate. -->

# ctx.llm

`LlmService` — provided by `@deepseek-ai/dsh-llm`.

The abstract `llm` service: an adapter registry plus a streaming model-call surface, interceptable via the `llm/stream` waterfall.

[Source](https://github.com/deepseek-harness/deepseek-harness/blob/master/packages/llm/llm/src/index.ts#L97)

### ctx.llm.registerAdapter(providers, adapter)

```ts website-api
/**
 * Register an adapter for the given provider routes. Throws `LlmError` with code
 * `DUPLICATE_ADAPTER` if any provider already has an adapter (all-or-nothing).
 * Disposed with the fiber.
 * @param providers - every provider route this adapter should serve.
 * @param adapter - the adapter that streams calls for those providers.
 * @returns the disposer that unregisters all of them.
 */
registerAdapter(providers: string[], adapter: LlmAdapter): () => void
```

Register an adapter for the given provider routes. Throws `LlmError` with code `DUPLICATE_ADAPTER` if any provider already has an adapter (all-or-nothing). Disposed with the fiber.

- `providers` — every provider route this adapter should serve.
- `adapter` — the adapter that streams calls for those providers.

**Returns** the disposer that unregisters all of them.

[Source](https://github.com/deepseek-harness/deepseek-harness/blob/master/packages/llm/llm/src/index.ts#L112)

### ctx.llm.listProviders()

```ts website-api
/**
 * Describe provider routes with a registered adapter.
 * @returns detached provider metadata in registration order.
 */
listProviders(): LlmProviderInfo[]
```

Describe provider routes with a registered adapter.

**Returns** detached provider metadata in registration order.

[Source](https://github.com/deepseek-harness/deepseek-harness/blob/master/packages/llm/llm/src/index.ts#L143)

### ctx.llm.listModels(provider)

```ts website-api
/**
 * Discover models advertised by one registered provider. Catalog membership
 * is advisory and never changes routing or request validation.
 * @param provider - registered provider route to inspect.
 * @returns detached model metadata in adapter-preferred order.
 */
async listModels(provider: string): Promise<LlmModelInfo[]>
```

Discover models advertised by one registered provider. Catalog membership is advisory and never changes routing or request validation.

- `provider` — registered provider route to inspect.

**Returns** detached model metadata in adapter-preferred order.

[Source](https://github.com/deepseek-harness/deepseek-harness/blob/master/packages/llm/llm/src/index.ts#L153)

### ctx.llm.stream(options)

```ts website-api
/**
 * Stream one model call as raw chunks (token-level deltas). Throws
 * `LlmError` with code `NO_ADAPTER` if no adapter is registered for
 * `options.provider`. Replay state is retained only when the same adapter
 * instance owns its historical provider and the target provider. Final
 * adapter selection, dispatch, and iteration failures retain their original
 * Error identity and are tagged in a call-local scope for narrow agent-loop
 * request recovery; middleware and nested-call failures remain untagged for
 * the outer call.
 * @param options - the full request; `options.provider` selects the adapter.
 * @returns the chunk stream, possibly wrapped by `llm/stream` listeners.
 */
stream(options: GenerateOptions): AsyncIterable<StreamChunk>
```

Stream one model call as raw chunks (token-level deltas). Throws `LlmError` with code `NO_ADAPTER` if no adapter is registered for `options.provider`. Replay state is retained only when the same adapter instance owns its historical provider and the target provider. Final adapter selection, dispatch, and iteration failures retain their original Error identity and are tagged in a call-local scope for narrow agent-loop request recovery; middleware and nested-call failures remain untagged for the outer call.

- `options` — the full request; `options.provider` selects the adapter.

**Returns** the chunk stream, possibly wrapped by `llm/stream` listeners.

[Source](https://github.com/deepseek-harness/deepseek-harness/blob/master/packages/llm/llm/src/index.ts#L264)
