Search & Filters - Mengram Docs

Basic search

results = m.search("deployment stack")
# Returns top 5 entities by relevance

Parameters

Parameter	Type	Default	Description
`query`	str	required	Natural language search query
`limit`	int	5	Maximum results to return
`graph_depth`	int	2	How many hops to traverse in the knowledge graph
`user_id`	str	”default”	User whose memories to search
`filters`	dict	None	Metadata key-value filters

Metadata filters

Filter search results by metadata stored on entities. Uses PostgreSQL JSONB containment (@>) for fast filtering with GIN indexes.

# Filter by agent
results = m.search("config", filters={"agent_id": "support-bot"})

# Filter by app
results = m.search("preferences", filters={"app_id": "prod"})

# Multiple filters (AND logic)
results = m.search("issues", filters={
    "agent_id": "support-bot",
    "app_id": "production",
})

# Also works with shorthand parameters
results = m.search("config", agent_id="support-bot", app_id="prod")

# Filter by provenance source
results = m.search("meeting notes", filters={"source": "slack"})

# Filter by custom metadata
results = m.search("bugs", filters={"source": "discord", "channel": "#engineering"})

Graph RAG (graph depth)

Mengram uses Graph RAG — retrieval-augmented generation over a knowledge graph. Instead of flat vector search, it traverses entity relationships to find connected context.

Query: "database issues"
  → Direct: PostgreSQL (technology)
    → 1 hop: Railway (platform) — "deployed_on"
      → 2 hop: OOM Bug (event) — "occurred_on" → Railway

Searching for “database issues” also surfaces that OOM bug on Railway — connected through the knowledge graph, not through keyword or embedding similarity. Control traversal depth with graph_depth:

# Shallow — just direct matches, fastest
results = m.search("Python", graph_depth=0)

# Default — 2 hops (entity → related → related)
results = m.search("Python", graph_depth=2)

# Deep — traverse far connections, slower but more context
results = m.search("Python", graph_depth=4)

Unified search

Search all 3 memory types in a single call:

results = m.search_all("deployment problems")

# Semantic — knowledge graph entities with facts
for entity in results["semantic"]:
    print(entity["entity"], entity["facts"])

# Episodic — events and experiences
for event in results["episodic"]:
    print(event["summary"], event["outcome"])

# Procedural — workflows and processes
for proc in results["procedural"]:
    print(proc["name"], proc["steps"])

Timeline search

Search facts by time range:

facts = m.timeline(after="2026-01-01", before="2026-02-01")
for f in facts:
    print(f["created_at"], f["entity"], f["fact"])