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100 lines
6.6 KiB
Markdown
100 lines
6.6 KiB
Markdown
---
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summary: "What experimental flags mean in OpenClaw and which ones are currently documented"
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title: "Experimental features"
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read_when:
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- You see an `.experimental` config key and want to know whether it is stable
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- You want to try preview runtime features without confusing them with normal defaults
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- You want one place to find the currently documented experimental flags
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---
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Experimental features are opt-in preview surfaces behind explicit flags. They need more real-world mileage before they get a stable default or a long-lived contract.
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- Off by default unless a doc tells you to enable one.
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- Shape and behavior can change faster than stable config.
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- Prefer a stable path when one already exists.
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- Roll out broadly only after testing in a smaller environment first.
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## Currently documented flags
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| Surface | Key | Use it when | More |
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| ------------------------ | ------------------------------------------------------------------------------------------ | --------------------------------------------------------------------------------------------------------------------------------- | --------------------------------------------------------------------------------------------- |
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| Local model runtime | `agents.defaults.experimental.localModelLean`, `agents.list[].experimental.localModelLean` | A smaller or stricter local backend chokes on OpenClaw's full default tool surface | [Local Models](/gateway/local-models) |
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| Memory search | `agents.defaults.memorySearch.experimental.sessionMemory` | You want `memory_search` to index prior session transcripts and accept the extra storage/indexing cost | [Memory configuration reference](/reference/memory-config#session-memory-search-experimental) |
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| Codex harness | `plugins.entries.codex.config.appServer.experimental.sandboxExecServer` | You want native Codex app-server 0.132.0 or newer to target an OpenClaw sandbox-backed exec-server instead of disabling Code Mode | [Codex harness reference](/plugins/codex-harness-reference#sandboxed-native-execution) |
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| Structured planning tool | `tools.experimental.planTool` | You want the structured `update_plan` tool exposed for multi-step work tracking in compatible runtimes and UIs | [Gateway configuration reference](/gateway/config-tools#toolsexperimental) |
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## Local model lean mode
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`agents.defaults.experimental.localModelLean: true` drops heavyweight optional tools from the agent's direct surface every turn: `browser`, `cron`, `message`, `image_generate`, `music_generate`, `video_generate`, `tts`, and `pdf`. Explicitly allowed or delivery-required tools remain available, though Tool Search may catalog them instead of exposing them directly. Lean mode also defaults plugin/MCP/client catalogs to structured Tool Search (`tool_search`, `tool_describe`, `tool_call`) when `tools.toolSearch` is not already set. Use `agents.list[].experimental.localModelLean` to scope this to one agent.
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If you already tune Tool Search globally, OpenClaw leaves that config alone. Set `tools.toolSearch: false` to opt out of the lean-mode Tool Search default.
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In structured `tools` mode, lean runs keep `exec` directly visible beside the Tool Search controls so coding-tuned local models can still choose their familiar shell path. This changes schema visibility only: normal tool policy, sandboxing, and exec approvals still apply. Explicit `code` and `directory` modes keep their normal compaction behavior.
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### Why these tools
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These tools have the largest descriptions, broadest parameter shapes, or highest chance of distracting a small model from the normal coding and conversation path. On a small-context or stricter OpenAI-compatible backend that is the difference between:
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- Tool schemas fitting the prompt vs. crowding out conversation history.
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- The model picking the right tool vs. emitting malformed tool calls from too many similar schemas.
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- The Chat Completions adapter staying inside structured-output limits vs. a 400 on tool-call payload size.
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Removing them only shortens the direct tool list. The model still has `read`, `write`, `edit`, `exec`, `apply_patch`, image understanding, web search/fetch (when configured), memory, and session/agent tools. Extra catalogs stay reachable through Tool Search unless you set `tools.toolSearch: false`; explicit tool allows can opt a lean agent back into a trimmed workflow.
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### When to turn it on
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Enable lean mode once you have proved the model can talk to the Gateway but full agent turns misbehave:
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1. `openclaw infer model run --gateway --model <ref> --prompt "Reply with exactly: pong"` succeeds.
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2. A normal agent turn fails with malformed tool calls, oversized prompts, or the model ignoring its tools.
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3. Toggling `localModelLean: true` clears the failure.
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### When to leave it off
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If your backend handles the full default runtime cleanly, leave this off. It is a workaround for local stacks that need a smaller tool surface, not a default for hosted models or well-resourced local rigs.
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Lean mode does not replace `tools.profile`, `tools.allow`/`tools.deny`, or the model `compat.supportsTools: false` escape hatch. For a permanent narrower tool surface on a specific agent, prefer those stable knobs.
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### Enable
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```json5
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{
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agents: {
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defaults: {
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experimental: {
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localModelLean: true,
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},
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},
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},
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}
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```
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For one agent only:
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```json5
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{
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agents: {
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list: [
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{
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id: "local",
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model: "lmstudio/gemma-4-e4b-it",
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experimental: {
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localModelLean: true,
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},
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},
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],
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},
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}
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```
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Restart the Gateway after changing the flag. Lean filtering removes `browser`, `cron`, `message`, `image_generate`, `music_generate`, `video_generate`, `tts`, and `pdf` unless you explicitly preserve them with `tools.allow` or `tools.alsoAllow`; Tool Search may still catalog preserved tools instead of exposing them directly.
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## Experimental does not mean hidden
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An experimental feature should say so plainly in docs and in the config path itself, not hide behind a stable-looking default knob.
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## Related
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- [Features](/concepts/features)
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- [Release channels](/install/development-channels)
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