Memory configuration reference

This page lists every configuration knob for OpenClaw memory search. For conceptual overviews, see:

Memory Overview — how memory works
Builtin Engine — default SQLite backend
QMD Engine — local-first sidecar
Memory Search — search pipeline and tuning

All memory search settings live under agents.defaults.memorySearch in openclaw.json unless noted otherwise.

Provider selection

Key	Type	Default	Description
`provider`	`string`	auto-detected	Embedding adapter ID: `openai`, `gemini`, `voyage`, `mistral`, `ollama`, `local`
`model`	`string`	provider default	Embedding model name
`fallback`	`string`	`"none"`	Fallback adapter ID when the primary fails
`enabled`	`boolean`	`true`	Enable or disable memory search

Auto-detection order

When provider is not set, OpenClaw selects the first available:

local — if memorySearch.local.modelPath is configured and the file exists.
openai — if an OpenAI key can be resolved.
gemini — if a Gemini key can be resolved.
voyage — if a Voyage key can be resolved.
mistral — if a Mistral key can be resolved.

ollama is supported but not auto-detected (set it explicitly).

API key resolution

Remote embeddings require an API key. OpenClaw resolves from: auth profiles, models.providers.*.apiKey, or environment variables.

Provider	Env var	Config key
OpenAI	`OPENAI_API_KEY`	`models.providers.openai.apiKey`
Gemini	`GEMINI_API_KEY`	`models.providers.google.apiKey`
Voyage	`VOYAGE_API_KEY`	`models.providers.voyage.apiKey`
Mistral	`MISTRAL_API_KEY`	`models.providers.mistral.apiKey`
Ollama	`OLLAMA_API_KEY` (placeholder)	—

Codex OAuth covers chat/completions only and does not satisfy embedding requests.

Remote endpoint config

For custom OpenAI-compatible endpoints or overriding provider defaults:

Key	Type	Description
`remote.baseUrl`	`string`	Custom API base URL
`remote.apiKey`	`string`	Override API key
`remote.headers`	`object`	Extra HTTP headers (merged with provider defaults)

{
  agents: {
    defaults: {
      memorySearch: {
        provider: "openai",
        model: "text-embedding-3-small",
        remote: {
          baseUrl: "https://api.example.com/v1/",
          apiKey: "YOUR_KEY",
        },
      },
    },
  },
}

Gemini-specific config

Key	Type	Default	Description
`model`	`string`	`gemini-embedding-001`	Also supports `gemini-embedding-2-preview`
`outputDimensionality`	`number`	`3072`	For Embedding 2: 768, 1536, or 3072

Changing model or outputDimensionality triggers an automatic full reindex.

Local embedding config

Key	Type	Default	Description
`local.modelPath`	`string`	auto-downloaded	Path to GGUF model file
`local.modelCacheDir`	`string`	node-llama-cpp default	Cache dir for downloaded models

Default model: embeddinggemma-300m-qat-Q8_0.gguf (~0.6 GB, auto-downloaded). Requires native build: pnpm approve-builds then pnpm rebuild node-llama-cpp.

Hybrid search config

All under memorySearch.query.hybrid:

Key	Type	Default	Description
`enabled`	`boolean`	`true`	Enable hybrid BM25 + vector search
`vectorWeight`	`number`	`0.7`	Weight for vector scores (0-1)
`textWeight`	`number`	`0.3`	Weight for BM25 scores (0-1)
`candidateMultiplier`	`number`	`4`	Candidate pool size multiplier

MMR (diversity)

Key	Type	Default	Description
`mmr.enabled`	`boolean`	`false`	Enable MMR re-ranking
`mmr.lambda`	`number`	`0.7`	0 = max diversity, 1 = max relevance

Temporal decay (recency)

Key	Type	Default	Description
`temporalDecay.enabled`	`boolean`	`false`	Enable recency boost
`temporalDecay.halfLifeDays`	`number`	`30`	Score halves every N days

Evergreen files (MEMORY.md, non-dated files in memory/) are never decayed.

Full example

{
  agents: {
    defaults: {
      memorySearch: {
        query: {
          hybrid: {
            vectorWeight: 0.7,
            textWeight: 0.3,
            mmr: { enabled: true, lambda: 0.7 },
            temporalDecay: { enabled: true, halfLifeDays: 30 },
          },
        },
      },
    },
  },
}

Additional memory paths

Key	Type	Description
`extraPaths`	`string[]`	Additional directories or files to index

{
  agents: {
    defaults: {
      memorySearch: {
        extraPaths: ["../team-docs", "/srv/shared-notes"],
      },
    },
  },
}

Paths can be absolute or workspace-relative. Directories are scanned recursively for .md files. Symlinks are ignored.

Multimodal memory (Gemini)

Index images and audio alongside Markdown using Gemini Embedding 2:

Key	Type	Default	Description
`multimodal.enabled`	`boolean`	`false`	Enable multimodal indexing
`multimodal.modalities`	`string[]`	—	`["image"]`, `["audio"]`, or `["all"]`
`multimodal.maxFileBytes`	`number`	`10000000`	Max file size for indexing

Only applies to files in extraPaths. Default memory roots stay Markdown-only. Requires gemini-embedding-2-preview. fallback must be "none". Supported formats: .jpg, .jpeg, .png, .webp, .gif, .heic, .heif (images); .mp3, .wav, .ogg, .opus, .m4a, .aac, .flac (audio).

Embedding cache

Key	Type	Default	Description
`cache.enabled`	`boolean`	`false`	Cache chunk embeddings in SQLite
`cache.maxEntries`	`number`	`50000`	Max cached embeddings

Prevents re-embedding unchanged text during reindex or transcript updates.

Batch indexing

Key	Type	Default	Description
`remote.batch.enabled`	`boolean`	`false`	Enable batch embedding API
`remote.batch.concurrency`	`number`	`2`	Parallel batch jobs
`remote.batch.wait`	`boolean`	`true`	Wait for batch completion
`remote.batch.pollIntervalMs`	`number`	—	Poll interval
`remote.batch.timeoutMinutes`	`number`	—	Batch timeout

Available for openai, gemini, and voyage. OpenAI batch is typically fastest and cheapest for large backfills.

Session memory search (experimental)

Index session transcripts and surface them via memory_search:

Key	Type	Default	Description
`experimental.sessionMemory`	`boolean`	`false`	Enable session indexing
`sources`	`string[]`	`["memory"]`	Add `"sessions"` to include transcripts
`sync.sessions.deltaBytes`	`number`	`100000`	Byte threshold for reindex
`sync.sessions.deltaMessages`	`number`	`50`	Message threshold for reindex

Session indexing is opt-in and runs asynchronously. Results can be slightly stale. Session logs live on disk, so treat filesystem access as the trust boundary.

SQLite vector acceleration (sqlite-vec)

Key	Type	Default	Description
`store.vector.enabled`	`boolean`	`true`	Use sqlite-vec for vector queries
`store.vector.extensionPath`	`string`	bundled	Override sqlite-vec path

When sqlite-vec is unavailable, OpenClaw falls back to in-process cosine similarity automatically.

Index storage

Key	Type	Default	Description
`store.path`	`string`	`~/.openclaw/memory/{agentId}.sqlite`	Index location (supports `{agentId}` token)
`store.fts.tokenizer`	`string`	`unicode61`	FTS5 tokenizer (`unicode61` or `trigram`)

QMD backend config

Set memory.backend = "qmd" to enable. All QMD settings live under memory.qmd:

Key	Type	Default	Description
`command`	`string`	`qmd`	QMD executable path
`searchMode`	`string`	`search`	Search command: `search`, `vsearch`, `query`
`includeDefaultMemory`	`boolean`	`true`	Auto-index `MEMORY.md` + `memory/*/.md`
`paths[]`	`array`	—	Extra paths: `{ name, path, pattern? }`
`sessions.enabled`	`boolean`	`false`	Index session transcripts
`sessions.retentionDays`	`number`	—	Transcript retention
`sessions.exportDir`	`string`	—	Export directory

Update schedule

Key	Type	Default	Description
`update.interval`	`string`	`5m`	Refresh interval
`update.debounceMs`	`number`	`15000`	Debounce file changes
`update.onBoot`	`boolean`	`true`	Refresh on startup
`update.waitForBootSync`	`boolean`	`false`	Block startup until refresh completes
`update.embedInterval`	`string`	—	Separate embed cadence
`update.commandTimeoutMs`	`number`	—	Timeout for QMD commands

Limits

Key	Type	Default	Description
`limits.maxResults`	`number`	`6`	Max search results
`limits.maxSnippetChars`	`number`	—	Clamp snippet length
`limits.maxInjectedChars`	`number`	—	Clamp total injected chars
`limits.timeoutMs`	`number`	`4000`	Search timeout

Scope

Controls which sessions can receive QMD search results. Same schema as session.sendPolicy:

{
  memory: {
    qmd: {
      scope: {
        default: "deny",
        rules: [{ action: "allow", match: { chatType: "direct" } }],
      },
    },
  },
}

Default is DM-only. match.keyPrefix matches the normalized session key; match.rawKeyPrefix matches the raw key including agent:<id>:.

Citations

memory.citations applies to all backends:

Value	Behavior
`auto` (default)	Include `Source: <path#line>` footer in snippets
`on`	Always include footer
`off`	Omit footer (path still passed to agent internally)

Full QMD example

{
  memory: {
    backend: "qmd",
    citations: "auto",
    qmd: {
      includeDefaultMemory: true,
      update: { interval: "5m", debounceMs: 15000 },
      limits: { maxResults: 6, timeoutMs: 4000 },
      scope: {
        default: "deny",
        rules: [{ action: "allow", match: { chatType: "direct" } }],
      },
      paths: [{ name: "docs", path: "~/notes", pattern: "**/*.md" }],
    },
  },
}

CLI commands

RPC and API

Templates

Technical reference

Concept internals

Project

Release policy

Memory configuration reference

Memory configuration reference

Provider selection

Auto-detection order

API key resolution

Remote endpoint config

Gemini-specific config

Local embedding config

Hybrid search config

MMR (diversity)

Temporal decay (recency)

Full example

Additional memory paths

Multimodal memory (Gemini)

Embedding cache

Batch indexing

Session memory search (experimental)

SQLite vector acceleration (sqlite-vec)

Index storage

QMD backend config

Update schedule

Limits

Scope

Citations

Full QMD example

CLI commands

RPC and API

Templates

Technical reference

Concept internals

Project

Release policy

​Memory configuration reference

​Provider selection

​Auto-detection order

​API key resolution

​Remote endpoint config

​Gemini-specific config

​Local embedding config

​Hybrid search config

​MMR (diversity)

​Temporal decay (recency)

​Full example

​Additional memory paths

​Multimodal memory (Gemini)

​Embedding cache

​Batch indexing

​Session memory search (experimental)

​SQLite vector acceleration (sqlite-vec)

​Index storage

​QMD backend config

​Update schedule

​Limits

​Scope

​Citations

​Full QMD example

Memory configuration reference

Provider selection

Auto-detection order

API key resolution

Remote endpoint config

Gemini-specific config

Local embedding config

Hybrid search config

MMR (diversity)

Temporal decay (recency)

Full example

Additional memory paths

Multimodal memory (Gemini)

Embedding cache

Batch indexing

Session memory search (experimental)

SQLite vector acceleration (sqlite-vec)

Index storage

QMD backend config

Update schedule

Limits

Scope

Citations

Full QMD example