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MemoryGraph vs Reasonbook
Short answer: Pick MemoryGraph if you want graph-structured memory for AI agents; pick Reasonbook if you want persistent decision logs for AI agents. MemoryGraph has a free plan, paid from $5/month; Reasonbook is free and open source.
MemoryGraphGraph based MCP Memory Server for AI Coding Agents
ReasonbookDecisions and project context that survive AI coding sessions.Which to pick
Pick MemoryGraph if you want…
- Graph-structured memory for AI agents
- Graph-based MCP memory
- Integrations with Claude (Desktop/Code), custom GPT implementations or any MCP-compatible assistant (on MemoryGraph's list, not Reasonbook's)
Pick Reasonbook if you want…
- Persistent decision logs for AI agents
- A free, open-source tool
- Integrations with Claude Code, Codex or CLI (on Reasonbook's list, not MemoryGraph's)
Side by side
- What it is
- MemoryGraph:MemoryGraph provides graph-based persistent memory for AI assistants via the Model Context Protocol.
- Reasonbook:Reasonbook is an Apache-2.0 MCP server and CLI that records project decisions, reasons, and next steps in a local SQLite database.
- Best for
- MemoryGraph:Graph-structured memory for AI agents
- Reasonbook:Persistent decision logs for AI agents
- Who it’s for
- MemoryGraph:Developers building AI coding agents that need long-term, relational memory.
- Reasonbook:Developers using AI coding agents who need persistent project context.
- Pricing
- MemoryGraph:Freemium
- Reasonbook:Open source
- Starting price
- MemoryGraph:$5/month (PRO)
- Reasonbook:Free
- Free plan or trial
- MemoryGraph:—
- Reasonbook:Free to use
- Plans
- MemoryGraph:PRO $5/month per month · ULTRA $50/month per month · TEAM $100/month per month
- Reasonbook:—
- Open source
- MemoryGraph:Yes
- Reasonbook:Yes, 0 GitHub stars
- Works with
- MemoryGraph:Claude (Desktop/Code), custom GPT implementations, any MCP-compatible assistant
- Reasonbook:Claude Code, Codex, CLI, npm package
MemoryGraph features
- Automatic memory capture. Stores solutions, patterns and decisions automatically as the agent works.
- Graph relationships. Creates typed edges (e.g., SOLVES, DEPENDS_ON) to enable multi-hop, temporal queries.
- Semantic recall. Fuzzy, relevance-based search across stored memories with recall_memories().
- Backend flexibility. Supports SQLite, FalkorDBLite, FalkorDB server, Neo4j, Memgraph and future cloud backend.
- Data portability. Migrate, export to JSON, and rollback memories between backends without lock-in.
- Cloud sync & team workspaces. Managed cloud backend shares memories across devices and teams with SSO support.
Reasonbook features
- SQLite decision ledger. Stores each decision, its reason, and learning in a local SQLite file within the repo.
- Session handoff. Agents retrieve prior decisions automatically at the start of a new session.
- Planning extensions. Planner adds next steps; Builder adds sprints, missions, objectives, and success criteria.
- Local-first operation. Runs without network connection or account; all data stays in the repository.
- Optional dashboard sync. Uploads the SQLite DB to a hosted dashboard for sharing and messaging between projects.
- Claude Code & Codex plugin. One-click installation brings the record into Claude Code and Codex sessions.
MemoryGraph vs Reasonbook FAQ
What is the difference between MemoryGraph and Reasonbook?+
Graph-based memory server, whereas Reasonbook uses a simple relational SQLite store.
Should I use MemoryGraph or Reasonbook?+
Pick MemoryGraph if you want graph-structured memory for AI agents, graph-based MCP memory or integrations with Claude (Desktop/Code), custom GPT implementations or any MCP-compatible assistant (on MemoryGraph's list, not Reasonbook's). Pick Reasonbook if you want persistent decision logs for AI agents, a free, open-source tool or integrations with Claude Code, Codex or CLI (on Reasonbook's list, not MemoryGraph's).
Is MemoryGraph or Reasonbook free?+
MemoryGraph has a free plan; paid plans start at $5/month (PRO). Reasonbook is free and open source.
Which is cheaper, MemoryGraph or Reasonbook?+
Reasonbook is free, so it costs less. MemoryGraph starts at $5/month (PRO).
Is MemoryGraph or Reasonbook open source?+
Yes, both are open source: MemoryGraph (gregorydickson/memory-graph on GitHub) and Reasonbook (kneelinghorse/reasonbook on GitHub, Apache-2.0 license).
Do MemoryGraph and Reasonbook integrate with the same tools?+
Their integration lists don't overlap: MemoryGraph lists Claude (Desktop/Code), custom GPT implementations and any MCP-compatible assistant; Reasonbook lists Claude Code, Codex, CLI and npm package.
On DevHunt
Based on each tool's website and DevHunt data. Details may change; check the official sites.