Capture, sync, and resume AI coding sessions across 8 tools — Claude Code, Codex, Gemini, Copilot, Cursor, Amp, Cline, and Roo Code.
Project description
SessionFS
Stop re-prompting. Start resuming.
SessionFS captures your AI coding sessions and makes them portable across tools and teammates.
Start a session in Claude Code, resume it in Codex. Push a session to the cloud, your teammate pulls it with full context — conversation history, workspace state, tool configs, and token usage. No copy-pasting. No re-explaining.
Supported Tools
| Tool | Capture | Resume |
|---|---|---|
| Claude Code | Yes | Yes |
| Codex CLI | Yes | Yes |
| Gemini CLI | Yes | Yes |
| Copilot CLI | Yes | Yes |
| Cursor IDE | Yes | Capture-only |
| Amp | Yes | Capture-only |
| Cline | Yes | Capture-only |
| Roo Code | Yes | Capture-only |
Quick Start
# 1. Install
pip install sessionfs
# 2. Start the daemon — it watches all 8 tools automatically
sfs daemon start
# 3. Use your AI tools normally — sessions are captured in the background
# 4. Browse captured sessions
sfs list
# 5. Resume a session (same tool or different)
sfs resume ses_abc123 --in codex
See the full Quickstart Guide for detailed steps.
How It Works
The sfsd daemon uses filesystem events (fsevents on macOS, inotify on Linux) to watch native AI tool session storage. When it detects new or updated sessions, it converts them into the .sfs format — a portable directory containing manifest.json, messages.jsonl, workspace.json, and tools.json.
Each tool has its own watcher:
- Claude Code — watches
~/.claude/projects/JSONL files - Codex CLI — watches
~/.codex/sessions/rollout files, reads SQLite index - Gemini CLI — watches
~/.gemini/tmp/*/chats/JSON sessions - Copilot CLI — watches
~/.copilot/session-state/event files - Cursor IDE — reads
state.vscdbSQLite database (capture-only) - Amp — watches
~/.local/share/amp/threads/JSON threads (capture-only) - Cline — watches VS Code globalStorage task directories (capture-only)
- Roo Code — watches VS Code globalStorage task directories (capture-only)
Sessions are indexed locally for fast browsing via the CLI. Cloud sync is opt-in; the daemon defaults to local-only.
Commands
| Command | Description |
|---|---|
sfs list |
List captured sessions with filtering and sorting |
sfs show <id> |
Show session details, messages, and cost estimates |
sfs resume <id> [--in TOOL] |
Resume a session in any supported tool (auto-launches) |
sfs fork <id> |
Fork a session into a new independent session |
sfs checkpoint <id> |
Create a named checkpoint of a session |
sfs alias <id> <name> |
Set or clear a session alias |
sfs export <id> |
Export as .sfs, markdown, or Claude Code format |
sfs import |
Import sessions from any supported tool |
sfs search "query" |
Full-text search across all sessions |
sfs summary <id> |
Show session summary (files, tests, commands, packages) (or --today for daily overview) |
sfs audit <id> |
Audit a session for hallucinations with LLM-as-a-Judge |
sfs push <id> |
Push a session to the cloud |
sfs pull <id> |
Pull a session from the cloud |
sfs pull-handoff <hnd_id> |
Pull a session from a handoff link |
sfs list-remote |
List sessions on the cloud server |
sfs handoff <id> --to EMAIL |
Hand off a session to a teammate with email notification |
sfs sync |
Bidirectional sync (push + pull) |
sfs sync auto --mode MODE |
Set autosync mode: off, all, or selective |
sfs sync watch|unwatch <id> |
Add/remove sessions from autosync watchlist |
sfs sync status |
Show autosync mode, counts, storage usage |
sfs project init|edit|show |
Manage shared project context for your team |
sfs project set-context FILE |
Set project context from a file |
sfs project get-context |
Output raw project context to stdout |
sfs storage |
Show local disk usage and retention policy |
sfs storage prune |
Prune old sessions to free disk space |
sfs daemon start|stop|restart|status|logs |
Manage the background daemon |
sfs daemon rebuild-index |
Rebuild local session index from .sfs files on disk |
sfs watcher list|enable|disable |
Manage tool watchers |
sfs auth login|signup|status |
Manage cloud authentication |
sfs config show|set |
Manage configuration |
sfs mcp serve |
Start MCP server for AI tool integration |
sfs mcp install --for TOOL |
Auto-configure MCP for all 8 supported tools |
sfs init |
Interactive setup wizard — auto-detects tools, optional sync |
sfs security scan|fix |
Audit config permissions, API key exposure, dependencies |
sfs org create|list|show|invite|remove |
Manage organizations, members, and roles |
sfs admin reindex |
Re-extract metadata for all cloud sessions |
sfs admin create-trial|create-license|list|extend|revoke |
Manage self-hosted licenses |
See the full CLI Reference for options and examples.
Cross-Tool Resume
# Start in Claude Code, resume in Codex
sfs resume ses_abc123 --in codex
# Start in Gemini, resume in Claude Code
sfs resume ses_def456 --in claude-code
# Cursor sessions can be resumed in any bidirectional tool
sfs resume ses_ghi789 --in gemini
SessionFS converts between native formats automatically — message roles, tool calls, thinking blocks, and workspace state are mapped across tools. See Compatibility for details on which tools support resume and why some are capture-only.
Cloud Sync (Optional)
# Create an account
sfs auth signup --url https://api.sessionfs.dev
# Push a session
sfs push <session_id>
# Pull on another machine
sfs pull <session_id>
sfs resume <session_id>
Free tier includes 14-day cloud retention with 1 device. See the Sync Guide for setup, conflict handling, and self-hosted options.
Session Search
# Search across all local sessions
sfs search "rate limiting middleware"
# MCP server lets AI tools search your past sessions
sfs mcp install --for claude-code
Team Handoff
# Hand off a session to a teammate
sfs handoff ses_abc123 --to sarah@company.com
# Teammate pulls and resumes
sfs pull ses_abc123
sfs resume ses_abc123 --in codex
Shared Project Context
Share architecture decisions, conventions, and team knowledge with every AI agent working on your codebase.
# Initialize project context (run from inside a git repo)
sfs project init
sfs project edit # Opens in $EDITOR
# Any teammate with sessions in the repo can read it
sfs project show
AI agents connected via the MCP server can call get_project_context to read the document automatically. See Project Context for details.
Web Dashboard
A browser-based interface for browsing and managing synced sessions. Accessible at http://localhost:8000 when running the self-hosted server, or at app.sessionfs.dev for cloud accounts.
Self-Hosted Server
docker compose up -d
Starts the SessionFS API server, PostgreSQL, and web dashboard. See the Sync Guide for full configuration.
Session Format
Sessions are stored as .sfs directories:
manifest.json— identity, provenance, model info, statsmessages.jsonl— conversation history with content blocksworkspace.json— git state, files, environmenttools.json— tool definitions and shell context
All file paths are relative to workspace root. Sessions are append-only — conflict resolution appends both sides rather than merging.
Status
v0.9.6 — Public Beta. 958 tests passing.
What works today:
- Eight-tool session capture (Claude Code, Codex, Gemini, Cursor, Copilot CLI, Amp, Cline, Roo Code)
- Cross-tool resume between Claude Code, Codex, Gemini, and Copilot CLI (auto-launches native tool, full transcript via --append-system-prompt-file with 50-message trim)
- Shared project context — one document per repo, shared across the team, readable via MCP, manageable from dashboard
- Local storage management with configurable retention, pruning, and disk warnings
- Full-text search across all sessions (CLI + dashboard + API)
- MCP server with 7 tools — search, context, recent, related, project context, summary, and audit report
- MCP install for all 8 tools (codex mcp add, gemini mcp add)
- LLM-as-a-Judge with confidence scores (0-100), CWE mapping, evidence linking, dismiss/confirm findings
- Narrative session summaries — LLM-powered what_happened, key_decisions, outcome, open_issues
- GitHub PR App + GitLab MR integration — auto-comment AI session context on pull requests and merge requests
- Team handoff with email notification, status stepper, session context card, and smart workspace resolution
- Multi-provider email (Resend, SMTP, or disabled for air-gapped)
- Browse, inspect, export, fork, and checkpoint sessions
- Cloud sync with push/pull, email verification, and ETag conflict detection
- FSL licensing with open-source core and enterprise extensions
- Self-hosted license lifecycle with grace periods, admin CLI, and dashboard licenses tab
- Server-side tier gating (5 tiers, 30+ gated features)
- RBAC with admin and member roles
- Stripe billing integration with subscription management
- Organization management (
sfs orgcommands) - Self-hosted deployment via Helm chart with license validation (EKS/GKE/AKS tested)
- Web dashboard with light/dark mode, resume-first layout, date-grouped sessions, lineage grouping, skeleton loading
sfs initwizard with auto-detection of 8 tools and optional sync setupsfs security scan/fixfor config permissions, API key exposure, dependency audit- Security pipeline (GitHub Action with pip-audit, Trivy, Bandit), Dependabot, SECURITY.md
- Multi-select bulk delete + Find Duplicates in dashboard
- Skill/slash command detection across all converters
On the roadmap:
- Session similarity and duplicate detection
- Cost analytics dashboard
- VS Code extension
Contributing
See CONTRIBUTING.md for development setup, testing, and PR guidelines.
License
Apache 2.0 — Core. FSL (Functional Source License) — Enterprise extensions in ee/.
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