Session Forge

session-forge

Never start from zero. Persistent session intelligence for AI coding assistants.

Session-forge gives your AI coding assistant memory that survives across sessions. It tracks decisions, dead ends, user preferences, and session state — so every conversation builds on the last one instead of starting from scratch.

Works with Claude Code, Cursor, Windsurf, and any MCP-compatible client.

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What it does

• Session crash recovery — checkpoint your work, pick up where you left off
• Decision logging — record why you chose X over Y, search it later
• Dead end tracking — never repeat the same debugging mistake twice
• User profile — AI remembers your name, preferences, and projects
• Session journal — capture the journey, not just the task
• Full context recall — bootstrap a new session with everything in one call
• Data management — prune old entries, export all data, view stats

Quick start

Claude Code

claude mcp add session-forge -- npx session-forge

Cursor / Windsurf

Add to your MCP settings:

{
  "mcpServers": {
    "session-forge": {
      "command": "npx",
      "args": ["-y", "session-forge"]
    }
  }
}

That's it. No database, no Docker, no config files.

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The 15 tools

Sessions

| Tool | Description | Required | |------|-------------|----------| | session_checkpoint | Save work-in-progress state for crash recovery | task, intent, next_steps | | session_restore | Check for interrupted work from a previous session | — | | session_complete | Archive session and mark complete | — |

Profile

| Tool | Description | Required | |------|-------------|----------| | profile_get | Get the current user profile | — | | profile_update | Update name, preferences, projects, or notes | — |

Journal

| Tool | Description | Required | |------|-------------|----------| | journal_entry | Record session summary with breakthroughs and frustrations | summary | | journal_recall | Retrieve recent session journals | — |

Decisions

| Tool | Description | Required | |------|-------------|----------| | decision_record | Log a significant decision with alternatives and reasoning | choice, reasoning | | decision_search | Search past decisions by keyword (supports limit param) | query |

Dead Ends

| Tool | Description | Required | |------|-------------|----------| | dead_end_record | Log a failed approach and the lesson learned | attempted, why_failed | | dead_end_search | Search past dead ends to avoid repeating mistakes (supports limit param) | query |

Context

| Tool | Description | Required | |------|-------------|----------| | full_context_recall | Get everything — profile, journals, decisions, dead ends. Supports optional project filter. | — |

Data Management

| Tool | Description | Required | |------|-------------|----------| | data_manage | Prune old entries, export all data, clear stores, or view stats | action | | data_list | Browse stored entries with numbered summaries. Supports search filter. | store | | data_delete | Delete a specific entry by index from data_list output | store, entry_index |

data_manage actions:

• stats — entry counts and schema versions for all stores
• export — dump all data as JSON
• prune — remove entries older than N days (default: 90)
• clear — wipe a specific store (journal, decisions, dead_ends, profile, or all)

data_list + data_delete workflow:

1. data_list with store="decisions" — see numbered list of all decisions
2. data_list with store="decisions", query="minecraft" — filter by keyword
3. data_delete with store="decisions", entry_index=3 — remove entry #3 from the list

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Why session-forge?

| | session-forge | Basic memory MCPs | Enterprise tools | |---|---|---|---| | Setup | npx session-forge | Varies | Docker + databases | | Dead end tracking | Yes | No | No | | Decision logging | Yes | No | Some | | Session crash recovery | Yes | Some | Yes | | Data management | Yes | No | Some | | User profile | Yes | Some | No | | Dependencies | 2 (SDK + zod) | Varies | 5-10+ | | Infrastructure | Zero (plain JSON) | SQLite/ONNX/Vector DB | PostgreSQL + Redis | | Tools | 15 focused | 4-9 | 37+ |

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Configuration

Environment variables

| Variable | Default | Description | |----------|---------|-------------| | SESSION_FORGE_DIR | ~/.session-forge or %APPDATA%\session-forge | Override data storage location | | SESSION_FORGE_STALE_HOURS | 24 | Hours before an inactive session is auto-archived |

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Storage

All data is stored locally as plain JSON files:

| Platform | Location | |----------|----------| | Linux / macOS | ~/.session-forge/ | | Windows | %APPDATA%\session-forge\ |

Override with the SESSION_FORGE_DIR environment variable:

SESSION_FORGE_DIR=/custom/path npx session-forge

Files:

~/.session-forge/
  profile.json        # User preferences and projects
  journal.json        # Session summaries (last 100)
  decisions.json      # Decision log (last 200)
  dead-ends.json      # Failed approaches (last 100)
  sessions/
    active.json       # Current checkpoint
    history/          # Archived sessions

Data files include a schema_version field for future migration support.

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CLAUDE.md template

Add this to your project's CLAUDE.md to teach the AI when to call each tool:

## Session Flow

### Fresh session
1. Call `full_context_recall` — get profile, journals, decisions, dead ends
2. Call `session_restore` — check for interrupted work

### During work
- `decision_record` — when making a significant architectural choice
- `dead_end_record` — when something fails and we learn why
- `session_checkpoint` — every 10-15 tool calls during long sessions

### Session end
1. Call `journal_entry` — record what happened
2. Call `session_complete` — archive the checkpoint

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Changelog

v2.0.1

• Added disclaimer: session-forge is NOT affiliated with SessionForge LLC (sessionforge.dev)

v2.0.0

• Knowledge Graph — link decisions and dead ends together with related_dead_ends and led_to_decision fields
• Scored Search — fuzzy matching, tag filtering, AND/OR search modes, relevance scoring (replaces basic string matching)
• Usage Stats — tracks dead ends avoided, searches performed, sessions recovered
• MEMORY.md Sync — full_context_recall can read your MEMORY.md and suggest decisions/dead ends that should be saved to memory
• Enhanced Checkpoints — now tracks errors_encountered, key_findings, decisions_made, dead_ends_hit
• New storage modules: links.js, search.js, stats.js, migrate.js
• Schema bumped to v2

v1.2.0

• Added data_list tool — browse stored entries with numbered summaries, optional search filter
• Added data_delete tool — surgically remove individual entries by index
• Users can now see exactly what's stored and delete anything they want

v1.1.0

• Added data_manage tool (stats, export, prune by age, clear per-store)
• Added project filter to full_context_recall
• Added limit param to decision_search and dead_end_search
• Added error logging to JSON reads (was silently swallowing parse failures)
• Added configurable stale session timeout via SESSION_FORGE_STALE_HOURS
• Added schema_version to data files for future migration support
• Fixed version mismatch between code and package.json

v1.0.2

• Initial public release

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License

MIT

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Important Notice

session-forge is NOT affiliated with SessionForge LLC (sessionforge.dev).

session-forge was first published on npm on February 7, 2026 — before SessionForge LLC appeared. We have no connection to their product or company.

Here's why this matters: session-forge stores all your data locally on your machine as plain JSON files. Nothing leaves your computer. No accounts, no servers, no third parties.

Any service asking you to route your AI session data, coding habits, and terminal access through their servers should make you ask: who has access to that data, and what are they doing with it?

Your workflow, your decisions, your code — that's yours. It should stay on your machine, under your control. That's how session-forge was built and that's how it will stay.

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Built by Jacob Terrell

Source & license

This open-source MCP server is cataloged on AgentStack and links to its original source — we do not rehost the code.

• Author: 420247jake
• Source: 420247jake/session-forge
• License: MIT

Install and usage instructions live in the source repository linked above.