--- name: llm-adapters description: > Nested system-manual reference for the built-in LLM adapters: what each named adapter is, how it is configured and dispatched, its special transport or protocol behaviors, and the environment variables that control it. version: 0.1.0 last_changed_at: "2026-08-06T00:00:00Z" related_files: - src/lingtai/llm/_register.py - src/lingtai/llm/service.py - src/lingtai/llm/openai/adapter.py - src/lingtai/llm/openai/codex_ws.py - src/lingtai/llm/custom/adapter.py - ENVIRONMENT_VARIABLES.md maintenance: | Keep one entry per named adapter. Add a section when a new adapter ships; keep each section to the adapter's concrete operating facts (dispatch, wire, special behavior, env vars) and point to source rather than restating code. --- # LLM Adapters Manual This reference documents LingTai's built-in LLM adapters. Adapters are the per-provider implementations that turn a provider's wire protocol into the kernel's session/stream contract. The canonical registration and dispatch table lives in `src/lingtai/llm/_register.py` and `src/lingtai/llm/service.py`; provider-defaults presets are configured through presets / `init.json` `llm` blocks. This page is the progressive-disclosure route from the system manual; source remains the behavioral authority. ## Named adapters LingTai registers the following provider keys (each usable in presets / `init.json` `llm` blocks; source of truth: `src/lingtai/llm/_register.py`): | Provider keys (aliases) | Factory / adapter | Transport(s) | Notes | |---|---|---|---| | `codex`, `codex-pool`, `codex_pool` | `CodexOpenAIAdapter` (in `openai/adapter.py`) | REST (default), WebSocket (opt-in) | Official ChatGPT Codex backend; account selection + token pool; `store=false` forced; streaming forced | | `openai` | `OpenAIAdapter` | REST (Chat Completions / Responses) | Responses API optional via `wire_api` / `use_responses_api` | | `anthropic` | `AnthropicAdapter` | REST | Anthropic Messages API | | `gemini` | `GeminiAdapter` | REST | Google Gemini API | | `minimax` | `MiniMaxAdapter` | REST | MiniMax API | | `deepseek` | `OpenAIAdapter` (generic; `inject_reasoning_fallback=True`, `reasoning_effort_vocab="seven_tier"`, `prompt_cache_namespace="deepseek"`) | REST | DeepSeek API | | `glm`, `zhipu` | `ZhipuAdapter` | REST | Zhipu / GLM API | | `mimo` | `MimoAdapter` | REST | Xiaomi MiMo API | | `custom`, `grok`, `qwen`, `kimi` | `create_custom_adapter` (in `custom/adapter.py`) | REST | Generic OpenAI-compatible endpoint (`custom` is the canonical key; `grok`/`qwen`/`kimi` are custom-backed aliases) | | `openrouter` | `OpenRouterAdapter` | REST | OpenRouter-compatible endpoint | | `claude-code`, `claude_code` | `ClaudeCodeAdapter` (in `claude_code/adapter.py`) | n/a (external CLI) | Local CLI-backed LLM provider (Claude Code harness); used as a main-agent/preset provider | | `kimi-code`, `kimi_code` | `KimiCodeAdapter` (in `kimi_code/adapter.py`) | n/a (external CLI) | Local CLI-backed LLM provider (Kimi Code harness); used as a main-agent/preset provider | Each adapter is lazy-imported on first use, so an unconfigured provider's SDK is never loaded. Prefer the provider's own section below when operating a specific provider. The CLI-backed providers above (`claude-code`, `kimi-code`) are registered LLM providers/preset paths; they are distinct from the daemon CLI backend dispatch system (see `daemon-manual`), which can run external coding CLIs as subprocesses for a task. ## Codex adapter The Codex adapter (`CodexOpenAIAdapter` → `CodexResponsesSession`, both in `src/lingtai/llm/openai/adapter.py`) talks to ChatGPT's official Codex `/backend-api/codex/responses` endpoint. It is the single native Codex provider: account selection, token-pool rotation, and `store=false` semantics are all handled inside the adapter (see `_register.py` and `service.py`). ### Transport: REST vs WebSocket Codex supports two transports that run the **same** full→incremental continuation planner; the transport only selects how the planned request is sent: - **REST** (default): each turn sends a self-contained full converted context. `incremental` only annotates an unchanged cache epoch — the wire payload is always the full input and never carries `previous_response_id`. - **WebSocket**: a persistent connection to `wss://chatgpt.com/backend-api/codex/responses` that can transmit a strict-additive delta plus `previous_response_id` on incremental turns. The wire driver lives in `src/lingtai/llm/openai/codex_ws.py`; the `websockets` package is an optional, lazily-imported dependency — if it is missing, the WS path falls back to HTTP. WebSocket is an **opt-in** transport. Normal runtime stays on REST because live testing showed REST prompt-prefix caching is sufficient. Resolution priority: 1. explicit `transport=` constructor kwarg (`websocket`/`ws` or `rest`); 2. legacy `ws_enabled=` kwarg (`True` → websocket); 3. environment-variable opt-in (see below); 4. hardcoded normal-runtime default: `rest`. ### Environment variables The Codex variables (`LINGTAI_CODEX_TRANSPORT`, `LINGTAI_CODEX_WS`, `LINGTAI_CODEX_WS_EPOCH_RESET_TURNS`, and the responses-trace pair) are registered with their accepted values and defaults in the repo-root `ENVIRONMENT_VARIABLES.md`, routed via `reference/environment-variables/SKILL.md`. Two behaviors worth holding here: they are read at session construction time (per process), and the selector is deliberately opt-in — an inherited or accidentally-set variable never flips a Codex agent onto WebSocket unless the value is explicitly the opt-in value. ## OpenAI adapter The `openai` adapter (`OpenAIAdapter` in `src/lingtai/llm/openai/adapter.py`) serves OpenAI-compatible endpoints over Chat Completions or the Responses API. The Responses API can be selected with `wire_api=responses` or the legacy `use_responses_api=true` provider default. A host-configured Responses compaction threshold can be passed via the `compact_threshold` provider default (see `_register.py`). ## Anthropic / Gemini / MiniMax / DeepSeek / Zhipu / MiMo Each of these adapters is a straightforward REST provider adapter in `src/lingtai/llm//adapter.py`. They are configured through the standard provider fields (model, api_key / auth, base_url where applicable) and have no transport env-var selectors today. See the per-provider source for constructor details. ## Custom / OpenRouter adapters `custom` (`src/lingtai/llm/custom/adapter.py`) and `openrouter` target generic OpenAI-compatible endpoints. `custom` is the provider used for user-defined third-party routers (see the provider-additions rule: do not propose adding such intermediaries as core built-in providers; use custom/user-defined presets). ## CLI-backed LLM providers (`claude-code`, `kimi-code`) `claude_code` and `kimi_code` are registered LLM providers whose adapters wrap local code-workspace CLIs (`ClaudeCodeAdapter`, `KimiCodeAdapter`) rather than speaking a wire protocol directly — valid main-agent/preset providers, lazy-imported like every other adapter. (Not the daemon backend axis; see above.) ### External CLI harnesses (daemon backends) The daemon tool runs external coding CLIs as task subprocesses through the `backend` axis. The index of backends, and one page per backend, live under `daemon-manual` → `reference/cli-backends/SKILL.md` (each page at `reference/cli-backends/reference/backends//SKILL.md`). Do not maintain a second backend list here. Each backend page carries the same `## Subscription & auth` section, so "what do I need to pay for / how does LingTai connect" is answered per backend without reading the vendor's full billing docs. These pages are entrypoints, not flag catalogs; the installed CLI's live help remains the authority.