agentmemory README

The project's README from github.com/rohitg00/agentmemory. As one markdown file: README.md.

agentmemory: persistent memory for AI coding agents

Your coding agent remembers everything. No more re-explaining. Built on iii engine
Persistent memory for Claude Code, GitHub Copilot CLI, Cursor, Gemini CLI, Codex CLI, Hermes, OpenClaw, pi, OpenCode, and any MCP client.

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rohitg00/agentmemory | Trendshift

Design doc: 1.6k stars / 230 forks on the gist

The gist extends Karpathy's LLM Wiki pattern with confidence scoring, lifecycle, knowledge graphs, and hybrid search: agentmemory is the implementation.

npm version CI License Stars

95.2% retrieval R@5 92% fewer tokens 54 MCP tools 12 auto hooks 0 external DBs 1,674+ tests passing

agentmemory demo

Install • Quick Start • Benchmarks • vs Competitors • Agents • How It Works • MCP • Viewer • Powered by iii • Config • API


Install

Requirements:

Canonical fresh-install command:

npx -y @agentmemory/agentmemory@latest

The first run is an interactive setup: pick the agents to wire (Claude Code, Cursor, Codex, Gemini CLI, OpenCode, ...), pick an LLM provider or stay keyless, and it seeds the config, starts the memory server and its pinned iii engine, and offers to install globally so the bare agentmemory command works everywhere afterward. -y accepts npx's package prompt and @latest avoids a stale cached release. A provider makes LLM features available, but LLM-written observation compression starts only when AGENTMEMORY_AUTO_COMPRESS=true is also set.

Keyless mode disables vector embeddings. memory_recall (the mem::search path) uses BM25, while memory_smart_search can also fuse structural graph matches when graph data already exists. For free on-device semantic recall, set EMBEDDING_PROVIDER=local in ~/.agentmemory/.env and restart. The first embedding request downloads Xenova/all-MiniLM-L6-v2; inference runs locally after that initial model download.

The local runtime uses four ports: 3111 for REST/MCP HTTP, 3112 for iii streams, 3113 for the viewer, and 49134 for the iii worker WebSocket. Persistent iii state lives in ~/Library/Application Support/agentmemory on macOS, $XDG_DATA_HOME/agentmemory or ~/.local/share/agentmemory on Linux, and %APPDATA%\agentmemory on Windows. Use --data-dir <path> or AGENTMEMORY_DATA_DIR to override it, and reuse the same value on every restart. For backward compatibility, an existing ./data/state_store.db or ./data/iii-config.yaml takes precedence over the platform default for instance 0; an explicit flag or environment override still wins.

Then prove recall works and give your agent its skills:

npx -y @agentmemory/agentmemory@latest demo  # seed sample sessions + exercise recall
npx skills add rohitg00/agentmemory -y   # 17 native skills so your agent knows when to reach for memory

The keyword searches should hit in default keyless mode through BM25. The demo's database performance optimization query is intentionally semantic and can return zero until an embedding provider is configured.

Prefer to let a coding agent do the whole thing? Hand it one instruction:

Retrieve and follow the instructions at: https://raw.githubusercontent.com/rohitg00/agentmemory/main/INSTALL_FOR_AGENTS.md

Wire more agents any time with agentmemory connect <agent> — 20 adapters listed at Works with every agent. Full command reference at Quick Start.

Windows

The fast path is WSL2. Native Windows engine setup requires the pinned v0.11.2 ZIP to be downloaded and iii.exe extracted manually; the CLI does not auto-extract it. Docker Desktop is also supported. See the Windows notes for the step-by-step.

Global install / EACCES
npm install -g @agentmemory/agentmemory@latest

The npx command above remains the canonical fresh-install path and avoids global-prefix permission issues.

npx serves an old version

npx caches per version. Force the latest with npx -y @agentmemory/agentmemory@latest, or clear the cache once with rm -rf ~/.npm/_npx (macOS/Linux; on Windows delete %LOCALAPPDATA%\npm-cache\_npx).

Already running your own iii engine

agentmemory pins iii-engine v0.11.2 and won't attach to a different version (the worker can't speak another engine's protocol). Stop the other engine, then run npx -y @agentmemory/agentmemory@latest. It installs and runs the pinned v0.11.2 in ~/.agentmemory/bin, leaving your own iii untouched.


Works with every agent

agentmemory works with any agent that supports hooks, MCP, or REST API. All agents share the same memory server.

Claude Code
Claude Code
native plugin + 12 hooks + MCP
Codex CLI
Codex CLI
native plugin + 6 hooks + MCP
GitHub Copilot CLI
GitHub Copilot CLI
MCP + plugin hooks/skills
OpenClaw
OpenClaw
native plugin + MCP
Hermes
Hermes
native plugin + MCP
pi
pi
native plugin + MCP
OpenHuman
OpenHuman
native Memory trait backend
Cursor
Cursor
native plugin + MCP
Gemini CLI
Gemini CLI
MCP server
OpenCode
OpenCode
22 hooks + MCP + plugin
Cline
Cline
MCP server
Goose
Goose
MCP server
Kilo Code
Kilo Code
MCP server
Aider
Aider
REST API
Claude Desktop
Claude Desktop
MCP server
Devin
Devin
6 hooks + MCP
Roo Code
Roo Code
MCP server
Warp
Warp
connect + MCP + skills

Works with any agent that speaks MCP or HTTP. One server, memories shared across all of them.


You explain the same architecture every session. You re-discover the same bugs. You re-teach the same preferences. Built-in memory (CLAUDE.md, .cursorrules) caps out at 200 lines and goes stale. agentmemory fixes this. It silently captures what your agent does, compresses it into searchable memory, and injects the right context when the next session starts. One command. Works across agents.

What changes: Session 1 you set up JWT auth. Session 2 you ask for rate limiting. The agent already knows your auth uses jose middleware in src/middleware/auth.ts, your tests cover token validation, and you chose jose over jsonwebtoken for Edge compatibility, with no re-explaining and no copy-pasting.

npx -y @agentmemory/agentmemory@latest

By default, agentmemory stores iii-engine state outside the repository you start it from: ~/Library/Application Support/agentmemory on macOS, $XDG_DATA_HOME/agentmemory or ~/.local/share/agentmemory on Linux, and %APPDATA%\agentmemory on Windows. An existing legacy ./data/state_store.db or ./data/iii-config.yaml is reused for instance 0 before that platform default. To choose a location explicitly, pass --data-dir <path> or set AGENTMEMORY_DATA_DIR; either explicit setting takes precedence over legacy discovery:

npx -y @agentmemory/agentmemory@latest --data-dir ~/.agentmemory-projects/main
AGENTMEMORY_DATA_DIR=~/.agentmemory-projects/main npx -y @agentmemory/agentmemory@latest

Native and Docker launches use this same resolved host directory; Docker bind-mounts it at /data. --instance 1 appends instance-1 to the resolved directory and selects the separate default port quartet 3211/3212/3213/49234.

Latest release notes: CHANGELOG.md.


Benchmarks

Retrieval Accuracy

coding-agent-life-v1 (in-house corpus, sandbox-reproducible)

Adapter P@5 R@5 Top-5 hit rate p50 latency
agentmemory hybrid 0.240 1.000 15 / 15 14 ms
grep baseline 0.227 0.967 15 / 15 0 ms

100% top-5 hit rate at the P@5 math ceiling for this corpus (0.240, see scorecard). Hybrid retrieves every gold session; grep misses 1 of 2 gold on the multi-session temporal query. Lift is recall + temporal, not aggregate precision. This benchmark is small and gold-sparse; the larger LongMemEval-S below differentiates better. Full per-type breakdown + correction note: docs/benchmarks/2026-05-20-coding-agent-life-v1.md.

LongMemEval-S (ICLR 2025, 500 questions)

System R@5 R@10 MRR
agentmemory 95.2% 98.6% 88.2%
BM25-only fallback 86.2% 94.6% 71.5%

Token Savings

Approach Tokens/yr Cost/yr
Paste full context 19.5M+ Impossible (exceeds window)
LLM-summarized ~650K ~$500
agentmemory ~170K ~$10
agentmemory + local embeddings ~170K $0

Embedding model: all-MiniLM-L6-v2 (local, free, no API key). Full reports: benchmark/LONGMEMEVAL.md, benchmark/QUALITY.md, benchmark/SCALE.md. Competitor comparison: benchmark/COMPARISON.md covering agentmemory vs mem0, Letta, Khoj, supermemory, TencentDB Agent Memory, MemPalace, Zep/Graphiti, Cognee, Hippo.

Reproduce locally: eval/README.md, an adapter-pluggable harness for LongMemEval _s (public 500-Q) + coding-agent-life-v1 (in-house 15-session corpus). Grep / vector / agentmemory adapters score side-by-side, NDJSON output, published scorecards land in docs/benchmarks/.

Pairs with codegraph, Understand Anything, and Graphify. Code-graph indexing, multi-agent build pipelines, and broader knowledge graphs across docs / PDFs / images / videos. agentmemory remembers the work; those three projects light up the rest of the context layer. Recipes + question-routing table: docs/recipes/pairings.md.


vs Competitors

t
agentmemory mem0 (63K ⭐) Letta / MemGPT (24K ⭐) Khoj (36K ⭐) supermemory (29K ⭐) TencentDB Agent Memory (22K ⭐) MemPalace (54K ⭐) oracleagentmemory Hippo Built-in (CLAUDE.md)
Type Memory engine + MCP server Memory layer API Full agent runtime Personal AI Memory API + app Team memory hub (LLM proxy) Vector memory (OSS) Memory engine (Oracle DB) Memory system Static file
Retrieval R@5 95.2% 68.5% (LoCoMo) 83.2% (LoCoMo) N/A Self-reported PersonaMem 76% (self-reported) ~96.6% (self-reported) 94.4% (self-reported) N/A N/A (grep)
Auto-capture 12 hooks (zero manual effort) Manual add() calls Agent self-edits Manual API-side extraction Proxy interception (base-URL swap) Manual API extraction Manual Manual editing

agentmemory (rohitg00/agentmemory)

hooks
Searching Database…

What is this?Persistent memory for AI coding agents: it captures what your agent does, compresses it into searchable memory, and injects the right context when the next session starts, so you stop re-explaining your project to Claude Code, Cursor or Codex.
Is this a library I import into my code, or a separate service my agents talk to?A separate local memory server plus an agentmemory CLI. Your coding agents connect to it through hooks, MCP, or a REST API, and nothing gets imported into your project's code.
How do I get it running?Install Node.js 20+ and run npx -y @agentmemory/agentmemory@latest. The first run is interactive: choose the agents to wire and an LLM provider (or keyless mode), then it seeds the config, starts the memory server, and offers a global install.
Which coding agents can it give memory to?Any agent with hooks, MCP, or a REST API — 20 adapters: Claude Code (12 hooks + MCP), Codex CLI, Cursor, Gemini CLI, OpenCode (22 hooks), Copilot CLI, Cline, Aider, Devin, Warp, Hermes, OpenClaw. All share one server; wire more anytime with agentmemory connect.
Does it work on native Windows, or is that a hassle?It runs, but WSL2 is the fast path. Native Windows needs the pinned iii-engine v0.11.2 ZIP downloaded and iii.exe extracted manually — the CLI does not auto-extract it; Docker Desktop is the other supported route.
Does the memory stay on my machine, or is it sent to some cloud?It stays local: the server runs on your machine (ports 3111 REST/MCP, 3112 streams, 3113 viewer, 49134 worker) and state lives in your user data directory, outside the repo. Local embedding mode (EMBEDDINGPROVIDER=local) runs inference on-device after a one-time model download.
Do I need an LLM API key to use it?No. Keyless mode works out of the box — keyword recall runs on BM25 without any key. A provider unlocks LLM features; EMBEDDINGPROVIDER=local gives free on-device semantic recall (all-MiniLM-L6-v2, downloaded once), and LLM-written compression additionally needs AGENTMEMORYAUTOCOMPRESS=true.
What does it change in practice, day to day?Session 1 you set up JWT auth; in session 2, when you ask for rate limiting, the agent already knows your auth uses jose middleware in src/middleware/auth.ts and that you picked jose over jsonwebtoken for Edge compatibility — no re-explaining, no copy-pasting context.
Why not just keep using CLAUDE.md?Built-in options like CLAUDE.md or .cursorrules cap out at about 200 lines and go stale. agentmemory captures continuously, compresses what it sees into searchable memory, injects the right context each session, and shares it across all your agents instead of one file per tool.
What is the bundled iii engine?It is the local storage/search engine, pinned at v0.11.2 and installed to ~/.agentmemory/bin. The worker cannot speak another engine's protocol, so it will not attach to your own iii — it runs the pinned version alongside, leaving your install untouched.
What are similar projects?context-mode, ruflo, mem0, brigade, billion-context, memex, Raven, MemOS
Creator
rohitg00
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Age
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Commits · 90 Days