Agentic Memory
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Persistent cognitive graph memory for AI agents — facts, decisions, reasoning chains, corrections. 16 query types, sub-millisecond. Rust core + Python SDK + MCP server.
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Persistent cognitive graph memory for AI agents — facts, decisions, reasoning chains, corrections. 16 query types, sub-millisecond. Rust core + Python SDK + MCP server.
Claude forgets your last conversation. GPT doesn't know what you decided last week. Your copilot can't recall the architecture discussions from three months ago. Every session starts from zero.
The current fixes don't work. Vector databases lose all structure -- you get "similar text," never "why did I decide this?". Markdown files are slow and break at scale. Key-value stores are flat -- no relationships, no reasoning chains. Provider memory is locked to one vendor.
AgenticMemory stores your agent's knowledge as a navigable graph in a single binary file. Not "search your old conversations." Your agent has a brain -- facts, decisions, reasoning chains, corrections, and skills -- all connected, all queryable in microseconds.
.amem memory survives restarts, model switches, and long gaps between sessions.from agentic_memory import Brain
brain = Brain("my_agent.amem")
# Your agent learns
brain.add_fact("User is a senior Rust developer", session=1, confidence=0.95)
brain.add_decision("Recommended tokio for async -- team has no Go experience", session=1)
# Session 47 -- months later, different LLM, same brain:
results = brain.search("async runtime") # Hybrid BM25 + vector search
chain = brain.traverse(decision_id) # Why did I decide this?
current = brain.resolve(old_fact_id) # What's the latest version?
report = brain.revise("Team now knows Go") # If this is true, what breaks?
gaps = brain.gaps() # Where am I guessing?
timeline = brain.drift("programming languages") # How has this belief changed?
Operational reliability commands (CLI):
amem quality my_agent.amem
amem runtime-sync my_agent.amem --workspace . --write-episode
New in v0.4.1 -- Memory that never dies.
V3 adds a complete append-only, content-addressed storage layer with BLAKE3 integrity chains. Your agent's memory is now cryptographically tamper-proof, multi-client, and designed to last 20 years.
+-------------------------------------------------------------+
| YOUR AI AGENT |
| (Claude, Cursor, Windsurf, Cody) |
+----------------------------+--------------------------------+
|
+----------v----------+
| MCP LAYER |
| Tools + Resources |
+----------+----------+
|
+----------------------------v--------------------------------+
| V3 ENGINE |
+--------------+--------------+--------------+----------------+
| Immortal Log | 5 Indexes |Tiered Storage| Ghost Writer |
| (append-only)| (T/S/C/E/P) | (H/W/C/F) | (multi-client) |
+--------------+--------------+--------------+----------------+
|
+----------v----------+
| .amem FILE |
| (your memory) |
+---------------------+
AgenticMemory V3 exposes 13 MCP tools for AI agents:
memory://v3/session/context -- Full session context
memory://v3/session/decisions -- Recent decisions
memory://v3/session/files -- Files modified
memory://v3/session/errors -- Errors resolved
memory://v3/session/activity -- Recent activity
memory://v3/stats -- Storage statistics
Rust core. Memory-mapped I/O. Zero-copy access. Real numbers from Criterion statistical benchmarks:
All v0.2 query benchmarks measured with Criterion (100 samples) on Apple M4 Pro, 64 GB, Rust 1.90.0
--release. Computationally intensive queries (gap detection 297s, analogical 229s, consolidation 43.6s at 100K) are designed for periodic/offline execution and complete in <3s at 10K nodes.
Capacity: A year of daily use produces a ~24 MB file. A decade fits in ~240 MB. A lifetime of memory fits in under 1 GB.
Memory is a graph, not a search index. When you remember why you made a decision, you traverse a chain: decision <- caused by <- these facts <- inferred from <- observations. That's graph navigation. Vector similarity search can never reconstruct this.
One file. Truly portable. Your entire memory is a single .amem file. Copy it. Back it up. Version control it. No cloud service, no API keys, no vendor lock-in.
Any LLM, any time. Start with Claude today. Switch to GPT tomorrow. Move to a local model next year. Same brain file. Cross-provider validation report with 21 interoperability tests.
Self-correcting. Corrections don't delete -- they SUPERSEDE. The old fact, the new fact, and the correction chain are all preserved. brain.resolve(old_id) always returns the current truth.
Sixteen query types. Not just search. Traversal, pattern matching, temporal comparison, causal impact, similarity, BM25 text search, hybrid search, graph centrality, shortest path, belief revision, reasoning gap detection, analogical reasoning, consolidation, drift detection, context extraction, and resolve. Five of these don't exist anywhere else.
Sixteen ways to navigate a cognitive graph. Seven are foundational. Four are established algorithms adapted for cognitive graphs. Five are genuinely novel -- they don't exist in any other system.
Belief Revision -- Counterfactual propagation. Inject a hypothetical fact, trace every causal edge forward, report what gets invalidated. Read-only -- nothing changes until you say so. Only possible because of typed causal edges + confidence scores.
report = brain.revise("Team now knows Go")
# report.contradicted -> ["Team has no Go experience"]
# report.invalidated_decisions -> ["Chose Rust because no Go"]
# report.total_affected -> 5 nodes
Reasoning Gaps -- Structural health audit. Finds decisions with no recorded justification, inferences built on a single fragile fact, high-impact nodes with low confidence, and correction chains that keep changing.
report = brain.gaps()
# report.health_score -> 0.73
# report.gaps -> [UnjustifiedDecision(...), SingleSourceInference(...), ...]
Analogical Reasoning -- Subgraph pattern matching. Finds past situations with the same reasoning structure even if the domain is completely different. A monolith-to-microservices migration matches a previous Flask-to-FastAPI migration -- same shape, different content.
Consolidation -- Brain maintenance. Deduplicates near-identical facts, detects unlinked contradictions, promotes stable inferences to facts. Dry-run by default. Automatic backup before any mutation.
Drift Detection -- Belief trajectory tracking. Shows how knowledge about a topic evolved session by session, computes stability scores, and identifies areas of active revision.
report = brain.drift("preferred language")
# Timeline: Python (session 1) -> Rust (session 15) -> exploring Zig (session 30)
# report.stability -> 0.3 (low -- keeps changing)
One-liner (desktop profile, backwards-compatible):
curl -fsSL https://agentralabs.tech/install/memory | bash
Downloads a pre-built agentic-memory-mcp binary to ~/.local/bin/ and merges the MCP server into your Claude Desktop and Claude Code configs. Memory defaults to ~/.brain.amem. Requires curl and jq.
If release artifacts are not available, the installer automatically falls back to cargo install --git source install.
Environment profiles (one command per environment):
# Desktop MCP clients (auto-merge Claude Desktop + Claude Code when detected)
curl -fsSL https://agentralabs.tech/install/memory/desktop | bash
# Terminal-only (no desktop config writes)
curl -fsSL https://agentralabs.tech/install/memory/terminal | bash
# Remote/server hosts (no desktop config writes)
curl -fsSL https://agentralabs.tech/install/memory/server | bash
For cloud/server runtime:
export AGENTIC_TOKEN="$(openssl rand -hex 32)"
All MCP clients must send Authorization: Bearer <same-token>.
If .amem/.acb/.avis files are on another machine, sync them to the server first.
Python SDK (requires amem Rust binary -- see INSTALL.md):
pip install agentic-brain
pip install agentic-brain[anthropic] # Claude
pip install agentic-brain[openai] # GPT
pip install agentic-brain[ollama] # Local models
pip install agentic-brain[all] # Everything
Rust CLI + MCP:
cargo install agentic-memory-cli # CLI (amem)
cargo install agentic-memory-mcp # MCP server
Rust library:
cargo add agentic-memory
Any MCP-compatible client gets instant access to persistent graph memory. The agentic-memory-mcp crate exposes the full AgenticMemory engine over the Model Context Protocol (JSON-RPC 2.0 over stdio).
cargo install agentic-memory-mcp
Add to ~/Library/Application Support/Claude/claude_desktop_config.json:
{
"mcpServers": {
"agentic-memory": {
"command": "agentic-memory-mcp",
"args": ["serve"]
}
}
}
Zero-config: defaults to
~/.brain.amem. Override with"args": ["--memory", "/path/to/brain.amem", "serve"].
Memory modes — control how aggressively Claude saves:
Add to .vscode/settings.json:
{
"mcp.servers": {
"agentic-memory": {
"command": "agentic-memory-mcp",
"args": ["serve"]
}
}
}
Once connected, the LLM can store facts, traverse reasoning chains, correct beliefs, run causal impact analysis, and maintain session continuity -- all backed by the same .amem binary graph. Full MCP docs ->
from agentic_memory import Brain, MemoryAgent
from agentic_memory.integrations import AnthropicProvider
brain = Brain("my_agent.amem")
agent = MemoryAgent(brain=brain, provider=AnthropicProvider(), verbose=True)
# Session 1
agent.chat("My name is Marcus. I'm building a Rust compiler.", session=1)
# Session 2 -- the agent remembers
response = agent.chat("What am I working on?", session=2)
# -> "You're building a Rust compiler, Marcus."
from agentic_memory import Brain
brain = Brain("my_agent.amem")
# Build knowledge
fact = brain.add_fact("User lives in Toronto", session=1, confidence=0.95)
dec = brain.add_decision("Chose PostgreSQL -- team knows it well", session=2)
brain.link(dec, fact, "caused_by")
# Correct without erasing
brain.add_correction("User moved to Vancouver", session=5, supersedes=fact)
# Navigate
brain.traverse(dec, edges=["caused_by"]) # Why this decision?
brain.resolve(fact) # -> "User moved to Vancouver"
brain.impact(fact) # What depends on this?
# Search (v0.2)
brain.search("PostgreSQL") # Hybrid BM25 + vector
brain.search_text("Vancouver") # Exact term match (1.58 ms @ 100K)
# Reason about your own reasoning (v0.2)
brain.revise("Team switched to MySQL") # What breaks?
brain.gaps() # Where am I guessing?
brain.centrality() # What are my core beliefs?
brain.drift("database choice") # How has this evolved?
brain.analogy(node_id=42) # Similar past patterns
brain.consolidate(dry_run=True) # Dedup, find contradictions
brain.shortest_path(src=42, dst=99) # How are these connected?
from agentic_memory import Brain, MemoryAgent
from agentic_memory.integrations import AnthropicProvider, OpenAIProvider
brain = Brain("shared_brain.amem")
# Monday: Claude learns
MemoryAgent(brain, AnthropicProvider()).chat(
"I decided to use Kubernetes for deployment", session=10
)
# Tuesday: GPT remembers everything Claude learned
response = MemoryAgent(brain, OpenAIProvider()).chat(
"What's our deployment strategy?", session=11
)
# -> "You decided to use Kubernetes for deployment."
Debug a decision -- When you need to understand why an agent made a choice:
brain.traverse(decision_id, edges=["caused_by"]) # Walk the reasoning chain
brain.impact(decision_id) # See downstream effects
Verify belief currency -- Before acting on stored knowledge:
current = brain.resolve(old_fact_id) # Follow supersedes chains to the latest version
Audit memory health -- Periodic maintenance to keep your brain reliable:
report = brain.gaps() # Find low-confidence nodes, stale evidence, unsupported decisions
# report.health_score -> 0.73
amem quality my_agent.amem # CLI equivalent
Cross-session continuity -- Starting a new session with context from past work:
results = brain.search("current task description") # Hybrid BM25 + vector retrieves relevant past experience
AgenticMemory stores knowledge as a typed cognitive event graph in a custom binary format. Nodes represent cognitive events (facts, decisions, inferences, corrections, skills, episodes). Edges encode causal relationships, belief revision, and temporal ordering. The query engine supports 16 navigation types across the graph.
The core runtime is written in Rust for performance and safety. All state lives in a portable .amem binary file -- no external databases, no managed vector services. The MCP server exposes the full engine over JSON-RPC stdio.
The cognitive graph in detail: Nodes are cognitive events -- six types:
Edges are relationships -- seven types: caused_by . supports . contradicts . supersedes . related_to . part_of . temporal_next
Queries -- sixteen types spanning retrieval, graph algorithms, and five novel cognitive operations that don't exist in any other system.
The binary .amem file uses fixed-size records (O(1) access), LZ4-compressed content, memory-mapped I/O, inline feature vectors, and a BM25 inverted index. No parsing overhead. No external services. Instant access.
+-------------------------------------+
| HEADER 64 bytes | Magic . version . dimension . counts . feature flags
+-------------------------------------+
| NODE TABLE fixed-size rows | type . session . confidence . timestamp . offset
+-------------------------------------+
| EDGE TABLE fixed-size rows | source . target . type . weight
+-------------------------------------+
| CONTENT BLOCK LZ4 compressed | UTF-8 text for each node
+-------------------------------------+
| FEATURE VECTORS 128-dim f32 | Embedding vectors for similarity
+-------------------------------------+
| INDEXES | type . session . temporal . cluster . BM25 term . doc lengths
+-------------------------------------+
v0.2 adds BM25 term index (tag 0x05) and document lengths (tag 0x06) to the index block, plus feature flags in the header. Fully backward compatible -- v0.1 readers skip unknown tags. v0.2 readers handle files with or without BM25 indexes via automatic slow-path fallback (77x slower but correct).
This isn't a prototype. It's tested beyond what most production systems require.
Cross-provider tests prove: facts, decisions, corrections, skills, and reasoning chains transfer perfectly between Claude, GPT-4o, and Ollama (including models as small as 1B parameters). Cross-version tests prove: v0.1 files load in v0.2, v0.2 files load in v0.1 (unknown indexes gracefully skipped).
Three research papers:
This is a Cargo workspace monorepo containing the core library, MCP server, and integration bridge tests.
agentic-memory/
├── Cargo.toml # Workspace root
├── crates/
│ ├── agentic-memory/ # Core library (crates.io: agentic-memory v0.3.2)
│ ├── agentic-memory-cli/ # CLI (crates.io: agentic-memory-cli v0.3.2)
│ ├── agentic-memory-mcp/ # MCP server (crates.io: agentic-memory-mcp v0.3.2)
│ └── agentic-memory-ffi/ # FFI bindings (crates.io: agentic-memory-ffi v0.3.2)
├── tests/bridge/ # Integration tests (core ↔ MCP)
├── python/ # Python SDK (PyPI: agentic-brain)
├── agent/ # Terminal test agent
├── installer/ # Auto-installer (PyPI: amem-installer)
├── examples/ # Python + Rust usage examples
├── paper/ # Research papers (I, II, III)
└── docs/ # Quickstart, API ref, concepts, benchmarks
# All workspace tests (unit + integration + bridge)
cargo test --workspace
# Bridge integration tests only
cargo test -p agentic-memory-bridge-tests
# Stress tests
cargo test -p agentic-memory-bridge-tests --test bridge_stress
cargo install agentic-memory-mcp
Configure Claude Desktop (~/Library/Application Support/Claude/claude_desktop_config.json):
{
"mcpServers": {
"agentic-memory": {
"command": "agentic-memory-mcp",
"args": ["serve"]
}
}
}
The next release is planned to add HTTP/SSE transport for remote deployments. Track progress in #1.
Planned CLI shape (not available in current release):
agentic-memory-mcp serve-http --memory /data/brain.amem --port 8080 --token "<token>"
agentic-memory-mcp serve-http --multi-tenant --data-dir /data/users --port 8080 --token "<token>"
Your agent's memory. One file. Forever yours.
Two purposes:
The model is commodity. Your .amem is value.
Grounding: Agent cannot claim "you said X" without memory evidence.
Workspaces: Query across multiple .amem files simultaneously.
V3 is fully backward compatible. Your V2 .amem files continue to work.
# V3 is enabled via feature flag in 0.4.0+
cargo build --features v3
# No migration command needed -- it just works
"A hard drive doesn't decide what's important at write time. It stores everything and lets you query later. Memory should do the same."
AgenticMemory V3 is built on three principles:
The result: AI agents that never forget, never lose context, and can recall any moment from any session.
See CONTRIBUTING.md. The fastest ways to help:
.amem files -- no telemetry, no cloud sync by default.AMEM_AUTO_CAPTURE_REDACT=true strips PII from prompt and tool context before storage.AMEM_AUTO_CAPTURE_MODE controls what gets captured: safe (default), full, or off.AGENTIC_TOKEN environment variable for bearer auth.Persistent cognitive graph memory for AI agents — facts, decisions, reasoning chains, corrections. 16 query types, sub-millisecond. Rust core + Python SDK + MCP server.
工具
尚無工具清單。遠端伺服器會在首次健康檢查後取得工具清單。
常見問題
在本頁複製適用於 Cursor、Claude Desktop、Claude Code 或 VS Code 的 stdio 設定。它使用發布者的安裝方式，而不是 PlugMCP 代理伺服器。
這筆記錄未列出必要的環境變數。
Agentic Memory 透過 stdio 在本機執行。
上次檢查時間：2026-10-27。 Persistent cognitive graph memory for AI agents — facts, decisions, reasoning chains, corrections. 16 query types, sub-millisecond. Rust core + Python SDK + MCP server.