Plugin Architecture
This page covers the internal architecture of the OpenClaw plugin system. For user-facing setup, discovery, and configuration, see Plugins.Public capability model
Capabilities are the public native plugin model inside OpenClaw. Every native OpenClaw plugin registers against one or more capability types:| Capability | Registration method | Example plugins |
|---|---|---|
| Text inference | api.registerProvider(...) | openai, anthropic |
| Speech | api.registerSpeechProvider(...) | elevenlabs, microsoft |
| Media understanding | api.registerMediaUnderstandingProvider(...) | openai, google |
| Image generation | api.registerImageGenerationProvider(...) | openai, google |
| Web search | api.registerWebSearchProvider(...) | google |
| Channel / messaging | api.registerChannel(...) | msteams, matrix |
External compatibility stance
The capability model is landed in core and used by bundled/native plugins today, but external plugin compatibility still needs a tighter bar than “it is exported, therefore it is frozen.” Current guidance:- existing external plugins: keep hook-based integrations working; treat this as the compatibility baseline
- new bundled/native plugins: prefer explicit capability registration over vendor-specific reach-ins or new hook-only designs
- external plugins adopting capability registration: allowed, but treat the capability-specific helper surfaces as evolving unless docs explicitly mark a contract as stable
- capability registration APIs are the intended direction
- legacy hooks remain the safest no-breakage path for external plugins during the transition
- exported helper subpaths are not all equal; prefer the narrow documented contract, not incidental helper exports
Plugin shapes
OpenClaw classifies every loaded plugin into a shape based on its actual registration behavior (not just static metadata):- plain-capability — registers exactly one capability type (for example a
provider-only plugin like
mistral) - hybrid-capability — registers multiple capability types (for example
openaiowns text inference, speech, media understanding, and image generation) - hook-only — registers only hooks (typed or custom), no capabilities, tools, commands, or services
- non-capability — registers tools, commands, services, or routes but no capabilities
openclaw plugins inspect <id> to see a plugin’s shape and capability
breakdown. See CLI reference for details.
Legacy hooks
Thebefore_agent_start hook remains supported as a compatibility path for
hook-only plugins. Legacy real-world plugins still depend on it.
Direction:
- keep it working
- document it as legacy
- prefer
before_model_resolvefor model/provider override work - prefer
before_prompt_buildfor prompt mutation work - remove only after real usage drops and fixture coverage proves migration safety
Compatibility signals
When you runopenclaw doctor or openclaw plugins inspect <id>, you may see
one of these labels:
| Signal | Meaning |
|---|---|
| config valid | Config parses fine and plugins resolve |
| compatibility advisory | Plugin uses a supported-but-older pattern (e.g. hook-only) |
| legacy warning | Plugin uses before_agent_start, which is deprecated |
| hard error | Config is invalid or plugin failed to load |
hook-only nor before_agent_start will break your plugin today —
hook-only is advisory, and before_agent_start only triggers a warning. These
signals also appear in openclaw status --all and openclaw plugins doctor.
Architecture overview
OpenClaw’s plugin system has four layers:- Manifest + discovery
OpenClaw finds candidate plugins from configured paths, workspace roots,
global extension roots, and bundled extensions. Discovery reads native
openclaw.plugin.jsonmanifests plus supported bundle manifests first. - Enablement + validation Core decides whether a discovered plugin is enabled, disabled, blocked, or selected for an exclusive slot such as memory.
- Runtime loading Native OpenClaw plugins are loaded in-process via jiti and register capabilities into a central registry. Compatible bundles are normalized into registry records without importing runtime code.
- Surface consumption The rest of OpenClaw reads the registry to expose tools, channels, provider setup, hooks, HTTP routes, CLI commands, and services.
- discovery + config validation should work from manifest/schema metadata without executing plugin code
- native runtime behavior comes from the plugin module’s
register(api)path
Channel plugins and the shared message tool
Channel plugins do not need to register a separate send/edit/react tool for normal chat actions. OpenClaw keeps one sharedmessage tool in core, and
channel plugins own the channel-specific discovery and execution behind it.
The current boundary is:
- core owns the shared
messagetool host, prompt wiring, session/thread bookkeeping, and execution dispatch - channel plugins own scoped action discovery, capability discovery, and any channel-specific schema fragments
- channel plugins execute the final action through their action adapter
ChannelMessageActionAdapter.describeMessageTool(...). That unified discovery
call lets a plugin return its visible actions, capabilities, and schema
contributions together so those pieces do not drift apart.
Core passes runtime scope into that discovery step. Important fields include:
accountIdcurrentChannelIdcurrentThreadTscurrentMessageIdsessionKeysessionIdagentId- trusted inbound
requesterSenderId
message tool.
This is why embedded-runner routing changes are still plugin work: the runner is
responsible for forwarding the current chat/session identity into the plugin
discovery boundary so the shared message tool exposes the right channel-owned
surface for the current turn.
For channel-owned execution helpers, bundled plugins should keep the execution
runtime inside their own extension modules. Core no longer owns the Discord,
Slack, Telegram, or WhatsApp message-action runtimes under src/agents/tools.
We do not publish separate plugin-sdk/*-action-runtime subpaths, and bundled
plugins should import their own local runtime code directly from their
extension-owned modules.
For polls specifically, there are two execution paths:
outbound.sendPollis the shared baseline for channels that fit the common poll modelactions.handleAction("poll")is the preferred path for channel-specific poll semantics or extra poll parameters
Capability ownership model
OpenClaw treats a native plugin as the ownership boundary for a company or a feature, not as a grab bag of unrelated integrations. That means:- a company plugin should usually own all of that company’s OpenClaw-facing surfaces
- a feature plugin should usually own the full feature surface it introduces
- channels should consume shared core capabilities instead of re-implementing provider behavior ad hoc
- the bundled
openaiplugin owns OpenAI model-provider behavior and OpenAI speech + media-understanding + image-generation behavior - the bundled
elevenlabsplugin owns ElevenLabs speech behavior - the bundled
microsoftplugin owns Microsoft speech behavior - the bundled
googleplugin owns Google model-provider behavior plus Google media-understanding + image-generation + web-search behavior - the bundled
minimax,mistral,moonshot, andzaiplugins own their media-understanding backends - the
voice-callplugin is a feature plugin: it owns call transport, tools, CLI, routes, and runtime, but it consumes core TTS/STT capability instead of inventing a second speech stack
- OpenAI lives in one plugin even if it spans text models, speech, images, and future video
- another vendor can do the same for its own surface area
- channels do not care which vendor plugin owns the provider; they consume the shared capability contract exposed by core
- plugin = ownership boundary
- capability = core contract that multiple plugins can implement or consume
- define the missing capability in core
- expose it through the plugin API/runtime in a typed way
- wire channels/features against that capability
- let vendor plugins register implementations
Capability layering
Use this mental model when deciding where code belongs:- core capability layer: shared orchestration, policy, fallback, config merge rules, delivery semantics, and typed contracts
- vendor plugin layer: vendor-specific APIs, auth, model catalogs, speech synthesis, image generation, future video backends, usage endpoints
- channel/feature plugin layer: Slack/Discord/voice-call/etc. integration that consumes core capabilities and presents them on a surface
- core owns reply-time TTS policy, fallback order, prefs, and channel delivery
openai,elevenlabs, andmicrosoftown synthesis implementationsvoice-callconsumes the telephony TTS runtime helper
Multi-capability company plugin example
A company plugin should feel cohesive from the outside. If OpenClaw has shared contracts for models, speech, media understanding, and web search, a vendor can own all of its surfaces in one place:- one plugin owns the vendor surface
- core still owns the capability contracts
- channels and feature plugins consume
api.runtime.*helpers, not vendor code - contract tests can assert that the plugin registered the capabilities it claims to own
Capability example: video understanding
OpenClaw already treats image/audio/video understanding as one shared capability. The same ownership model applies there:- core defines the media-understanding contract
- vendor plugins register
describeImage,transcribeAudio, anddescribeVideoas applicable - channels and feature plugins consume the shared core behavior instead of wiring directly to vendor code
Contracts and enforcement
The plugin API surface is intentionally typed and centralized inOpenClawPluginApi. That contract defines the supported registration points and
the runtime helpers a plugin may rely on.
Why this matters:
- plugin authors get one stable internal standard
- core can reject duplicate ownership such as two plugins registering the same provider id
- startup can surface actionable diagnostics for malformed registration
- contract tests can enforce bundled-plugin ownership and prevent silent drift
- runtime registration enforcement The plugin registry validates registrations as plugins load. Examples: duplicate provider ids, duplicate speech provider ids, and malformed registrations produce plugin diagnostics instead of undefined behavior.
- contract tests Bundled plugins are captured in contract registries during test runs so OpenClaw can assert ownership explicitly. Today this is used for model providers, speech providers, web search providers, and bundled registration ownership.
What belongs in a contract
Good plugin contracts are:- typed
- small
- capability-specific
- owned by core
- reusable by multiple plugins
- consumable by channels/features without vendor knowledge
- vendor-specific policy hidden in core
- one-off plugin escape hatches that bypass the registry
- channel code reaching straight into a vendor implementation
- ad hoc runtime objects that are not part of
OpenClawPluginApiorapi.runtime
Execution model
Native OpenClaw plugins run in-process with the Gateway. They are not sandboxed. A loaded native plugin has the same process-level trust boundary as core code. Implications:- a native plugin can register tools, network handlers, hooks, and services
- a native plugin bug can crash or destabilize the gateway
- a malicious native plugin is equivalent to arbitrary code execution inside the OpenClaw process
plugins.allowtrusts plugin ids, not source provenance.- A workspace plugin with the same id as a bundled plugin intentionally shadows the bundled copy when that workspace plugin is enabled/allowlisted.
- This is normal and useful for local development, patch testing, and hotfixes.
Export boundary
OpenClaw exports capabilities, not implementation convenience. Keep capability registration public. Trim non-contract helper exports:- bundled-plugin-specific helper subpaths
- runtime plumbing subpaths not intended as public API
- vendor-specific convenience helpers
- setup/onboarding helpers that are implementation details
Load pipeline
At startup, OpenClaw does roughly this:- discover candidate plugin roots
- read native or compatible bundle manifests and package metadata
- reject unsafe candidates
- normalize plugin config (
plugins.enabled,allow,deny,entries,slots,load.paths) - decide enablement for each candidate
- load enabled native modules via jiti
- call native
register(api)hooks and collect registrations into the plugin registry - expose the registry to commands/runtime surfaces
Manifest-first behavior
The manifest is the control-plane source of truth. OpenClaw uses it to:- identify the plugin
- discover declared channels/skills/config schema or bundle capabilities
- validate
plugins.entries.<id>.config - augment Control UI labels/placeholders
- show install/catalog metadata
What the loader caches
OpenClaw keeps short in-process caches for:- discovery results
- manifest registry data
- loaded plugin registries
- Set
OPENCLAW_DISABLE_PLUGIN_DISCOVERY_CACHE=1orOPENCLAW_DISABLE_PLUGIN_MANIFEST_CACHE=1to disable these caches. - Tune cache windows with
OPENCLAW_PLUGIN_DISCOVERY_CACHE_MSandOPENCLAW_PLUGIN_MANIFEST_CACHE_MS.
Registry model
Loaded plugins do not directly mutate random core globals. They register into a central plugin registry. The registry tracks:- plugin records (identity, source, origin, status, diagnostics)
- tools
- legacy hooks and typed hooks
- channels
- providers
- gateway RPC handlers
- HTTP routes
- CLI registrars
- background services
- plugin-owned commands
- plugin module -> registry registration
- core runtime -> registry consumption
Conversation binding callbacks
Plugins that bind a conversation can react when an approval is resolved. Useapi.onConversationBindingResolved(...) to receive a callback after a bind
request is approved or denied:
status:"approved"or"denied"decision:"allow-once","allow-always", or"deny"binding: the resolved binding for approved requestsrequest: the original request summary, detach hint, sender id, and conversation metadata
Provider runtime hooks
Provider plugins now have two layers:- manifest metadata:
providerAuthEnvVarsfor cheap env-auth lookup before runtime load, plusproviderAuthChoicesfor cheap onboarding/auth-choice labels and CLI flag metadata before runtime load - config-time hooks:
catalog/ legacydiscovery - runtime hooks:
resolveDynamicModel,prepareDynamicModel,normalizeResolvedModel,capabilities,prepareExtraParams,wrapStreamFn,formatApiKey,refreshOAuth,buildAuthDoctorHint,isCacheTtlEligible,buildMissingAuthMessage,suppressBuiltInModel,augmentModelCatalog,isBinaryThinking,supportsXHighThinking,resolveDefaultThinkingLevel,isModernModelRef,prepareRuntimeAuth,resolveUsageAuth,fetchUsageSnapshot
providerAuthEnvVars when the provider has env-based credentials
that generic auth/status/model-picker paths should see without loading plugin
runtime. Use manifest providerAuthChoices when onboarding/auth-choice CLI
surfaces should know the provider’s choice id, group labels, and simple
one-flag auth wiring without loading provider runtime. Keep provider runtime
envVars for operator-facing hints such as onboarding labels or OAuth
client-id/client-secret setup vars.
Hook order and usage
For model/provider plugins, OpenClaw calls hooks in this rough order. The “When to use” column is the quick decision guide.| # | Hook | What it does | When to use |
|---|---|---|---|
| 1 | catalog | Publish provider config into models.providers during models.json generation | Provider owns a catalog or base URL defaults |
| — | (built-in model lookup) | OpenClaw tries the normal registry/catalog path first | (not a plugin hook) |
| 2 | resolveDynamicModel | Sync fallback for provider-owned model ids not in the local registry yet | Provider accepts arbitrary upstream model ids |
| 3 | prepareDynamicModel | Async warm-up, then resolveDynamicModel runs again | Provider needs network metadata before resolving unknown ids |
| 4 | normalizeResolvedModel | Final rewrite before the embedded runner uses the resolved model | Provider needs transport rewrites but still uses a core transport |
| 5 | capabilities | Provider-owned transcript/tooling metadata used by shared core logic | Provider needs transcript/provider-family quirks |
| 6 | prepareExtraParams | Request-param normalization before generic stream option wrappers | Provider needs default request params or per-provider param cleanup |
| 7 | wrapStreamFn | Stream wrapper after generic wrappers are applied | Provider needs request headers/body/model compat wrappers without a custom transport |
| 8 | formatApiKey | Auth-profile formatter: stored profile becomes the runtime apiKey string | Provider stores extra auth metadata and needs a custom runtime token shape |
| 9 | refreshOAuth | OAuth refresh override for custom refresh endpoints or refresh-failure policy | Provider does not fit the shared pi-ai refreshers |
| 10 | buildAuthDoctorHint | Repair hint appended when OAuth refresh fails | Provider needs provider-owned auth repair guidance after refresh failure |
| 11 | isCacheTtlEligible | Prompt-cache policy for proxy/backhaul providers | Provider needs proxy-specific cache TTL gating |
| 12 | buildMissingAuthMessage | Replacement for the generic missing-auth recovery message | Provider needs a provider-specific missing-auth recovery hint |
| 13 | suppressBuiltInModel | Stale upstream model suppression plus optional user-facing error hint | Provider needs to hide stale upstream rows or replace them with a vendor hint |
| 14 | augmentModelCatalog | Synthetic/final catalog rows appended after discovery | Provider needs synthetic forward-compat rows in models list and pickers |
| 15 | isBinaryThinking | On/off reasoning toggle for binary-thinking providers | Provider exposes only binary thinking on/off |
| 16 | supportsXHighThinking | xhigh reasoning support for selected models | Provider wants xhigh on only a subset of models |
| 17 | resolveDefaultThinkingLevel | Default /think level for a specific model family | Provider owns default /think policy for a model family |
| 18 | isModernModelRef | Modern-model matcher for live profile filters and smoke selection | Provider owns live/smoke preferred-model matching |
| 19 | prepareRuntimeAuth | Exchange a configured credential into the actual runtime token/key just before inference | Provider needs a token exchange or short-lived request credential |
| 20 | resolveUsageAuth | Resolve usage/billing credentials for /usage and related status surfaces | Provider needs custom usage/quota token parsing or a different usage credential |
| 21 | fetchUsageSnapshot | Fetch and normalize provider-specific usage/quota snapshots after auth is resolved | Provider needs a provider-specific usage endpoint or payload parser |
Provider example
Built-in examples
- Anthropic uses
resolveDynamicModel,capabilities,buildAuthDoctorHint,resolveUsageAuth,fetchUsageSnapshot,isCacheTtlEligible,resolveDefaultThinkingLevel, andisModernModelRefbecause it owns Claude 4.6 forward-compat, provider-family hints, auth repair guidance, usage endpoint integration, prompt-cache eligibility, and Claude default/adaptive thinking policy. - OpenAI uses
resolveDynamicModel,normalizeResolvedModel, andcapabilitiesplusbuildMissingAuthMessage,suppressBuiltInModel,augmentModelCatalog,supportsXHighThinking, andisModernModelRefbecause it owns GPT-5.4 forward-compat, the direct OpenAIopenai-completions->openai-responsesnormalization, Codex-aware auth hints, Spark suppression, synthetic OpenAI list rows, and GPT-5 thinking / live-model policy. - OpenRouter uses
catalogplusresolveDynamicModelandprepareDynamicModelbecause the provider is pass-through and may expose new model ids before OpenClaw’s static catalog updates; it also usescapabilities,wrapStreamFn, andisCacheTtlEligibleto keep provider-specific request headers, routing metadata, reasoning patches, and prompt-cache policy out of core. - GitHub Copilot uses
catalog,auth,resolveDynamicModel, andcapabilitiesplusprepareRuntimeAuthandfetchUsageSnapshotbecause it needs provider-owned device login, model fallback behavior, Claude transcript quirks, a GitHub token -> Copilot token exchange, and a provider-owned usage endpoint. - OpenAI Codex uses
catalog,resolveDynamicModel,normalizeResolvedModel,refreshOAuth, andaugmentModelCatalogplusprepareExtraParams,resolveUsageAuth, andfetchUsageSnapshotbecause it still runs on core OpenAI transports but owns its transport/base URL normalization, OAuth refresh fallback policy, default transport choice, synthetic Codex catalog rows, and ChatGPT usage endpoint integration. - Google AI Studio and Gemini CLI OAuth use
resolveDynamicModelandisModernModelRefbecause they own Gemini 3.1 forward-compat fallback and modern-model matching; Gemini CLI OAuth also usesformatApiKey,resolveUsageAuth, andfetchUsageSnapshotfor token formatting, token parsing, and quota endpoint wiring. - Moonshot uses
catalogpluswrapStreamFnbecause it still uses the shared OpenAI transport but needs provider-owned thinking payload normalization. - Kilocode uses
catalog,capabilities,wrapStreamFn, andisCacheTtlEligiblebecause it needs provider-owned request headers, reasoning payload normalization, Gemini transcript hints, and Anthropic cache-TTL gating. - Z.AI uses
resolveDynamicModel,prepareExtraParams,wrapStreamFn,isCacheTtlEligible,isBinaryThinking,isModernModelRef,resolveUsageAuth, andfetchUsageSnapshotbecause it owns GLM-5 fallback,tool_streamdefaults, binary thinking UX, modern-model matching, and both usage auth + quota fetching. - Mistral, OpenCode Zen, and OpenCode Go use
capabilitiesonly to keep transcript/tooling quirks out of core. - Catalog-only bundled providers such as
byteplus,cloudflare-ai-gateway,huggingface,kimi-coding,modelstudio,nvidia,qianfan,synthetic,together,venice,vercel-ai-gateway, andvolcengineusecatalogonly. - Qwen portal uses
catalog,auth, andrefreshOAuth. - MiniMax and Xiaomi use
catalogplus usage hooks because their/usagebehavior is plugin-owned even though inference still runs through the shared transports.
Runtime helpers
Plugins can access selected core helpers viaapi.runtime. For TTS:
textToSpeechreturns the normal core TTS output payload for file/voice-note surfaces.- Uses core
messages.ttsconfiguration and provider selection. - Returns PCM audio buffer + sample rate. Plugins must resample/encode for providers.
listVoicesis optional per provider. Use it for vendor-owned voice pickers or setup flows.- Voice listings can include richer metadata such as locale, gender, and personality tags for provider-aware pickers.
- OpenAI and ElevenLabs support telephony today. Microsoft does not.
api.registerSpeechProvider(...).
- Keep TTS policy, fallback, and reply delivery in core.
- Use speech providers for vendor-owned synthesis behavior.
- Legacy Microsoft
edgeinput is normalized to themicrosoftprovider id. - The preferred ownership model is company-oriented: one vendor plugin can own text, speech, image, and future media providers as OpenClaw adds those capability contracts.
- Keep orchestration, fallback, config, and channel wiring in core.
- Keep vendor behavior in the provider plugin.
- Additive expansion should stay typed: new optional methods, new optional result fields, new optional capabilities.
- If OpenClaw adds a new capability such as video generation later, define the core capability contract first, then let vendor plugins register against it.
api.runtime.mediaUnderstanding.*is the preferred shared surface for image/audio/video understanding.- Uses core media-understanding audio configuration (
tools.media.audio) and provider fallback order. - Returns
{ text: undefined }when no transcription output is produced (for example skipped/unsupported input). api.runtime.stt.transcribeAudioFile(...)remains as a compatibility alias.
api.runtime.subagent:
providerandmodelare optional per-run overrides, not persistent session changes.- OpenClaw only honors those override fields for trusted callers.
- For plugin-owned fallback runs, operators must opt in with
plugins.entries.<id>.subagent.allowModelOverride: true. - Use
plugins.entries.<id>.subagent.allowedModelsto restrict trusted plugins to specific canonicalprovider/modeltargets, or"*"to allow any target explicitly. - Untrusted plugin subagent runs still work, but override requests are rejected instead of silently falling back.
api.registerWebSearchProvider(...).
Notes:
- Keep provider selection, credential resolution, and shared request semantics in core.
- Use web-search providers for vendor-specific search transports.
api.runtime.webSearch.*is the preferred shared surface for feature/channel plugins that need search behavior without depending on the agent tool wrapper.
Gateway HTTP routes
Plugins can expose HTTP endpoints withapi.registerHttpRoute(...).
path: route path under the gateway HTTP server.auth: required. Use"gateway"to require normal gateway auth, or"plugin"for plugin-managed auth/webhook verification.match: optional."exact"(default) or"prefix".replaceExisting: optional. Allows the same plugin to replace its own existing route registration.handler: returntruewhen the route handled the request.
api.registerHttpHandler(...)is obsolete. Useapi.registerHttpRoute(...).- Plugin routes must declare
authexplicitly. - Exact
path + matchconflicts are rejected unlessreplaceExisting: true, and one plugin cannot replace another plugin’s route. - Overlapping routes with different
authlevels are rejected. Keepexact/prefixfallthrough chains on the same auth level only.
Plugin SDK import paths
Use SDK subpaths instead of the monolithicopenclaw/plugin-sdk import when
authoring plugins:
openclaw/plugin-sdk/plugin-entryfor plugin registration primitives.openclaw/plugin-sdk/corefor the generic shared plugin-facing contract.- Stable channel primitives such as
openclaw/plugin-sdk/channel-setup,openclaw/plugin-sdk/channel-pairing,openclaw/plugin-sdk/channel-reply-pipeline,openclaw/plugin-sdk/secret-input, andopenclaw/plugin-sdk/webhook-ingressfor shared setup/auth/reply/webhook wiring. - Domain subpaths such as
openclaw/plugin-sdk/channel-config-helpers,openclaw/plugin-sdk/channel-config-schema,openclaw/plugin-sdk/channel-policy,openclaw/plugin-sdk/channel-runtime,openclaw/plugin-sdk/config-runtime,openclaw/plugin-sdk/agent-runtime,openclaw/plugin-sdk/lazy-runtime,openclaw/plugin-sdk/reply-history,openclaw/plugin-sdk/routing,openclaw/plugin-sdk/runtime-store, andopenclaw/plugin-sdk/directory-runtimefor shared runtime/config helpers. - Narrow channel-core subpaths such as
openclaw/plugin-sdk/discord-core,openclaw/plugin-sdk/telegram-core, andopenclaw/plugin-sdk/whatsapp-corefor channel-specific primitives that should stay smaller than the full channel helper barrels. - Bundled extension internals remain private. External plugins should use only
openclaw/plugin-sdk/*subpaths. OpenClaw core/test code may use the repo public entry points underextensions/<id>/index.js,api.js,runtime-api.js,setup-entry.js, and narrowly scoped files such aslogin-qr-api.js. Never importextensions/<id>/src/*from core or from another extension. - Repo entry point split:
extensions/<id>/api.jsis the helper/types barrel,extensions/<id>/runtime-api.jsis the runtime-only barrel,extensions/<id>/index.jsis the bundled plugin entry, andextensions/<id>/setup-entry.jsis the setup plugin entry. openclaw/plugin-sdk/telegramfor Telegram channel plugin types and shared channel-facing helpers. Built-in Telegram implementation internals stay private to the bundled extension.openclaw/plugin-sdk/discordfor Discord channel plugin types and shared channel-facing helpers. Built-in Discord implementation internals stay private to the bundled extension.openclaw/plugin-sdk/slackfor Slack channel plugin types and shared channel-facing helpers. Built-in Slack implementation internals stay private to the bundled extension.openclaw/plugin-sdk/imessagefor iMessage channel plugin types and shared channel-facing helpers. Built-in iMessage implementation internals stay private to the bundled extension.openclaw/plugin-sdk/whatsappfor WhatsApp channel plugin types and shared channel-facing helpers. Built-in WhatsApp implementation internals stay private to the bundled extension.openclaw/plugin-sdk/bluebubblesremains public because it carries a small focused helper surface that is shared intentionally.
- Avoid the root
openclaw/plugin-sdkbarrel for new code. - Prefer the narrow stable primitives first. The newer setup/pairing/reply/ secret-input/webhook subpaths are the intended contract for new bundled and external plugin work.
- Bundled extension-specific helper barrels are not stable by default. If a
helper is only needed by a bundled extension, keep it behind the extension’s
local
api.jsorruntime-api.jsseam instead of promoting it intoopenclaw/plugin-sdk/<extension>. - Capability-specific subpaths such as
image-generation,media-understanding, andspeechexist because bundled/native plugins use them today. Their presence does not by itself mean every exported helper is a long-term frozen external contract.
Channel target resolution
Channel plugins should own channel-specific target semantics. Keep the shared outbound host generic and use the messaging adapter surface for provider rules:messaging.inferTargetChatType({ to })decides whether a normalized target should be treated asdirect,group, orchannelbefore directory lookup.messaging.targetResolver.looksLikeId(raw, normalized)tells core whether an input should skip straight to id-like resolution instead of directory search.messaging.targetResolver.resolveTarget(...)is the plugin fallback when core needs a final provider-owned resolution after normalization or after a directory miss.messaging.resolveOutboundSessionRoute(...)owns provider-specific session route construction once a target is resolved.
- Use
inferTargetChatTypefor category decisions that should happen before searching peers/groups. - Use
looksLikeIdfor “treat this as an explicit/native target id” checks. - Use
resolveTargetfor provider-specific normalization fallback, not for broad directory search. - Keep provider-native ids like chat ids, thread ids, JIDs, handles, and room
ids inside
targetvalues or provider-specific params, not in generic SDK fields.
Config-backed directories
Plugins that derive directory entries from config should keep that logic in the plugin and reuse the shared helpers fromopenclaw/plugin-sdk/directory-runtime.
Use this when a channel needs config-backed peers/groups such as:
- allowlist-driven DM peers
- configured channel/group maps
- account-scoped static directory fallbacks
directory-runtime only handle generic operations:
- query filtering
- limit application
- deduping/normalization helpers
- building
ChannelDirectoryEntry[]
Provider catalogs
Provider plugins can define model catalogs for inference withregisterProvider({ catalog: { run(...) { ... } } }).
catalog.run(...) returns the same shape OpenClaw writes into
models.providers:
{ provider }for one provider entry{ providers }for multiple provider entries
catalog when the plugin owns provider-specific model ids, base URL
defaults, or auth-gated model metadata.
catalog.order controls when a plugin’s catalog merges relative to OpenClaw’s
built-in implicit providers:
simple: plain API-key or env-driven providersprofile: providers that appear when auth profiles existpaired: providers that synthesize multiple related provider entrieslate: last pass, after other implicit providers
discoverystill works as a legacy alias- if both
cataloganddiscoveryare registered, OpenClaw usescatalog
Read-only channel inspection
If your plugin registers a channel, prefer implementingplugin.config.inspectAccount(cfg, accountId) alongside resolveAccount(...).
Why:
resolveAccount(...)is the runtime path. It is allowed to assume credentials are fully materialized and can fail fast when required secrets are missing.- Read-only command paths such as
openclaw status,openclaw status --all,openclaw channels status,openclaw channels resolve, and doctor/config repair flows should not need to materialize runtime credentials just to describe configuration.
inspectAccount(...) behavior:
- Return descriptive account state only.
- Preserve
enabledandconfigured. - Include credential source/status fields when relevant, such as:
tokenSource,tokenStatusbotTokenSource,botTokenStatusappTokenSource,appTokenStatussigningSecretSource,signingSecretStatus
- You do not need to return raw token values just to report read-only
availability. Returning
tokenStatus: "available"(and the matching source field) is enough for status-style commands. - Use
configured_unavailablewhen a credential is configured via SecretRef but unavailable in the current command path.
Package packs
A plugin directory may include apackage.json with openclaw.extensions:
name/<fileBase>.
If your plugin imports npm deps, install them in that directory so
node_modules is available (npm install / pnpm install).
Security guardrail: every openclaw.extensions entry must stay inside the plugin
directory after symlink resolution. Entries that escape the package directory are
rejected.
Security note: openclaw plugins install installs plugin dependencies with
npm install --ignore-scripts (no lifecycle scripts). Keep plugin dependency
trees “pure JS/TS” and avoid packages that require postinstall builds.
Optional: openclaw.setupEntry can point at a lightweight setup-only module.
When OpenClaw needs setup surfaces for a disabled channel plugin, or
when a channel plugin is enabled but still unconfigured, it loads setupEntry
instead of the full plugin entry. This keeps startup and setup lighter
when your main plugin entry also wires tools, hooks, or other runtime-only
code.
Optional: openclaw.startup.deferConfiguredChannelFullLoadUntilAfterListen
can opt a channel plugin into the same setupEntry path during the gateway’s
pre-listen startup phase, even when the channel is already configured.
Use this only when setupEntry fully covers the startup surface that must exist
before the gateway starts listening. In practice, that means the setup entry
must register every channel-owned capability that startup depends on, such as:
- channel registration itself
- any HTTP routes that must be available before the gateway starts listening
- any gateway methods, tools, or services that must exist during that same window
Channel catalog metadata
Channel plugins can advertise setup/discovery metadata viaopenclaw.channel and
install hints via openclaw.install. This keeps the core catalog data-free.
Example:
~/.openclaw/mpm/plugins.json~/.openclaw/mpm/catalog.json~/.openclaw/plugins/catalog.json
OPENCLAW_PLUGIN_CATALOG_PATHS (or OPENCLAW_MPM_CATALOG_PATHS) at
one or more JSON files (comma/semicolon/PATH-delimited). Each file should
contain { "entries": [ { "name": "@scope/pkg", "openclaw": { "channel": {...}, "install": {...} } } ] }.
Context engine plugins
Context engine plugins own session context orchestration for ingest, assembly, and compaction. Register them from your plugin withapi.registerContextEngine(id, factory), then select the active engine with
plugins.slots.contextEngine.
Use this when your plugin needs to replace or extend the default context
pipeline rather than just add memory search or hooks.
compact()
implemented and delegate it explicitly:
Adding a new capability
When a plugin needs behavior that does not fit the current API, do not bypass the plugin system with a private reach-in. Add the missing capability. Recommended sequence:- define the core contract Decide what shared behavior core should own: policy, fallback, config merge, lifecycle, channel-facing semantics, and runtime helper shape.
- add typed plugin registration/runtime surfaces
Extend
OpenClawPluginApiand/orapi.runtimewith the smallest useful typed capability surface. - wire core + channel/feature consumers Channels and feature plugins should consume the new capability through core, not by importing a vendor implementation directly.
- register vendor implementations Vendor plugins then register their backends against the capability.
- add contract coverage Add tests so ownership and registration shape stay explicit over time.
Capability checklist
When you add a new capability, the implementation should usually touch these surfaces together:- core contract types in
src/<capability>/types.ts - core runner/runtime helper in
src/<capability>/runtime.ts - plugin API registration surface in
src/plugins/types.ts - plugin registry wiring in
src/plugins/registry.ts - plugin runtime exposure in
src/plugins/runtime/*when feature/channel plugins need to consume it - capture/test helpers in
src/test-utils/plugin-registration.ts - ownership/contract assertions in
src/plugins/contracts/registry.ts - operator/plugin docs in
docs/
Capability template
Minimal pattern:- core owns the capability contract + orchestration
- vendor plugins own vendor implementations
- feature/channel plugins consume runtime helpers
- contract tests keep ownership explicit