mcp-session-insight
The mcp-session-insight server provides AI-native observability into past coding sessions from Claude Code, OpenCode, and Codex, allowing you to query, analyze, and extract insights from historical session data.
List Sessions – Browse all past sessions with optional filtering by project path and result limits
Show Session Metadata – Get a quick overview of a session (project, time, message count) using full or prefix-matched session IDs
Search Sessions – Search across all sessions by keyword in content or session ID
Get Session Summary – Retrieve a comprehensive structured JSON summary (
EnrichedSummary) covering duration, message density, file changes, classified bash commands, errors, decisions, tool usage stats, and git actions — designed for LLM synthesis at zero extra API costGet File Changes – See which files were created or modified during a session
Get User Requests – Extract a deduplicated list of user requests made during a session
Get Todo Progress – View todo snapshots and progress tracked during a session
Get Errors & Issues – Retrieve errors encountered during a session with contextual information
Get Key Decisions – Extract important decisions made (from thinking blocks) during a session
Get Conversation History – Retrieve conversation messages with optional filtering by role (user/assistant/all) and message limit
Get Git Logs – Collect and browse git commit history across all discovered projects, with filters for date range, author, and project
Collects git commit history across all Claude Code projects, allowing filtering by date range and project.
Click on "Deploy Server".
Wait a few minutes for the server to deploy. Once ready, it will show a "Started" state.
In the chat, type
@followed by the MCP server name and your instructions, e.g., "@mcp-session-insight summarize my last session's file changes and errors"
That's it! The server will respond to your query, and you can continue using it as needed.
Here is a step-by-step guide with screenshots.
MCP Session Insight
AI-Native Session Observability for Claude Code, OpenCode, and Codex
简体中文 | English
Why session-insight?
AI coding sessions accumulate rich context — file changes, user requests, decisions, errors, git history — but that context vanishes when the session ends. Static rule files cannot answer "what did I work on today?" or "what went wrong in that last session?".
session-insight gives your AI assistant a read-only lens into all past sessions:
Session analytics — extract structured insights from JSONL: file changes, decisions, errors, tool usage, todo progress
Multi-source collection — read Claude Code JSONL, OpenCode SQLite sessions, and Codex JSONL sessions
Real work filtering — Codex collection ignores developer/system prompts and environment metadata, keeping only real user work content
EnrichedSummary — returns structured JSON instead of Markdown templates, letting the calling LLM synthesize concise summaries at zero extra API cost
Cross-project git logs — collect commit history across all projects with date range, project, and author filters
Semantic classification — bash commands classified into 9 categories (build/test/deploy/debug/network/run/git/explore/other)
Session handoff — generate structured context for seamless session continuation
Related MCP server: Central Brain
Quick Start
# Install
npm install -g @morningljn/mcp-session-insight
# One-command setup
claude mcp add session-insight -- npx @morningljn/mcp-session-insightRestart your AI assistant and it can now query all past sessions.
Supported Sources
Source | Default Location | Notes |
Claude Code |
| Reads project-scoped JSONL sessions |
OpenCode |
| Reads SQLite session, message, and part tables |
Codex |
| Reads JSONL sessions and filters hidden prompts/context |
Manual Setup
Add to ~/.claude/mcp.json:
{
"mcpServers": {
"session-insight": {
"command": "npx",
"args": ["@morningljn/mcp-session-insight"]
}
}
}Tools
Tool | Description |
| Use first for daily reports or source-specific collection; returns source counts and structured sessions |
| List all sessions with optional project filter and limit |
| Show session metadata (supports prefix matching on session ID) |
| Search sessions by keyword in content or ID |
| Returns EnrichedSummary JSON for LLM synthesis |
| Get file changes (created / modified / read) |
| Get deduplicated user requests |
| Get todo progress snapshots |
| Get errors and issues with context |
| Get key decisions from thinking blocks |
| Get conversation history with role filter |
| Collect git commit logs across projects |
Process Lifecycle
The server exits automatically when the MCP stdio input closes, so old Claude Code sessions should not leave orphaned npm exec or node processes behind. For an extra safety net, set SESSION_INSIGHT_IDLE_TIMEOUT_MS to a positive number of milliseconds:
{
"mcpServers": {
"session-insight": {
"command": "npx",
"args": ["@morningljn/mcp-session-insight"],
"env": {
"SESSION_INSIGHT_IDLE_TIMEOUT_MS": "1800000"
}
}
}
}get_session_summary (EnrichedSummary)
Returns structured JSON instead of formatted text. The calling LLM reads the data and synthesizes a concise summary — zero extra API cost.
{
"sessionDuration": "116min",
"messageDensity": "low",
"classifiedBash": [{ "cmd": "npm test", "category": "test" }],
"errorsWithContext": [{ "message": "...", "trigger": "Bash", "relatedFile": "src/server.ts" }],
"fileChangeGroups": [{ "directory": "src", "created": ["git.ts"], "modified": [] }],
"dedupedRequests": ["refactor summary to structured JSON"],
"decisions": ["use Jaccard trigram for dedup"],
"toolStats": { "Bash": 93, "Read": 39, "Edit": 38 },
"gitActions": ["git commit -m \"feat: ...\"", "git push origin main"]
}get_git_logs
Collect git commit history across all discovered projects:
[
{
"project": "/Users/user/project",
"projectName": "my-app",
"commits": [
{ "hash": "a1b2c3d", "message": "feat: add auth", "author": "user", "date": "2026-05-20T10:00:00+08:00", "files": ["src/auth.ts"] }
]
}
]Architecture
┌───────────────────┐ stdio ┌──────────────────┐ read ┌──────────────────────────┐
│ MCP Client │◄─────────►│ session-insight │◄──────────►│ ~/.claude/projects/ │
│ Claude/OpenCode/ │ JSON │ server │ │ ~/.local/share/opencode/ │
│ Codex │ │ │ │ ~/.codex/sessions/ │
└───────────────────┘ └───────┬──────────┘ └──────────────────────────┘
│
┌──────┴──────┐
│ Provider │
│ Registry │
└──────┬──────┘
│
┌──────┴──────┐
│ Extractor │ Git Log
│ (summary, │ Collector
│ classify, │
│ dedup, │
│ errors) │
└─────────────┘Key design decisions:
Stateless — no app-owned database, no persistence, reads existing session stores on each request
Fixture-friendly providers — provider roots are configurable so tests do not scan real local history
LLM-friendly output — structured JSON that the calling LLM synthesizes into natural language
Development
npm install
npm test # run tests with vitest
npm run build # compile TypeScript
npm start # start MCP serverLicense
MIT
Available Tools
11 toolsget_git_logsA
Collect git commit logs across projects. Returns structured JSON grouped by project. Only call this if the user explicitly asks for git logs or commit history.
Inputs: since, until, project, author.
get_session_changesA
Get file changes (created/modified) for a session. Only call this if the user explicitly asks for file changes.
Inputs: session_id (required).
get_session_conversationB
Get conversation messages for a session
Inputs: session_id (required), role, limit.
get_session_decisionsA
Get decisions for a session. Only call this if the user explicitly asks for decisions.
Inputs: session_id (required).
get_session_errorsA
Get errors/issues for a session. Only call this if the user explicitly asks for errors.
Inputs: session_id (required).
get_session_requestsA
Get deduplicated user requests for a session. Only call this if the user explicitly asks for user requests.
Inputs: session_id (required).
get_session_summaryA
Get a comprehensive summary for a session. Returns structured JSON data (EnrichedSummary). Based on this data, synthesize a concise Chinese summary for the user covering: what was done, key files changed, errors encountered, and decisions made. This is the SINGLE tool to call when the user wants to understand what happened in a session. Do NOT call other tools after this.
Inputs: session_id (required).
get_session_todosA
Get todo snapshots for a session. Only call this if the user explicitly asks for todo progress.
Inputs: session_id (required).
list_sessionsC
List all sessions, optionally filtered by project
Inputs: project, limit.
search_sessionsC
Search sessions by keyword
Inputs: keyword (required).
show_sessionA
Show metadata for a session (project, time, message count). Use this for a quick overview. For full content, use get_session_conversation or get_session_summary.
Inputs: session_id (required).
Tool Schema Changelog
Recent tool additions, removals, and schema changes observed during successful MCP inspections.
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TDQS
Scored across 11 tools
Each tool targets a distinct aspect of sessions (git logs, changes, conversation, decisions, errors, requests, summary, todos, listing, searching, metadata). Descriptions include explicit guidance on when to use each, preventing confusion.
All tools follow a consistent verb_noun pattern (e.g., get_git_logs, get_session_changes, list_sessions) using snake_case, with no deviations or mixed conventions.
With 11 tools, the server thoroughly covers session insight without redundancy. Each tool serves a unique query, fitting the scope well.
The tool set covers all common retrieval needs for session analysis (metadata, conversation, changes, errors, decisions, etc.), with no obvious gaps for a read-only insight server.
Maintenance
Related MCP Connectors
Persistent, governed institutional memory for Claude Code — specs, decisions, learnings.
Persistent cross-session memory shared by Codex, Claude Code, ChatGPT, and other AI agents.
Shared work memory for Claude Code, Codex, Cursor and chat, scoped to each repository.
One searchable history across every AI coding tool, with secret scanning and a shared task board.
Related MCP Servers
- AlicenseNot gradedqualityDmaintenanceEnables searching and retrieving Claude Code conversation history that would otherwise expire after 30 days. Supports full-text search, semantic search, and session management with automatic backup of all conversations.6 npm28MIT
- AlicenseNot gradedqualityDmaintenanceProvides persistent memory for Claude Code, automatically extracting and surfacing relevant context from past sessions to avoid re-explaining issues and decisions.MIT
- AlicenseNot gradedqualityDmaintenanceEnables searching and browsing past Claude Code conversations directly from within an active Claude session, with full-text search and cost tracking.MIT
- AlicenseNot gradedqualityAmaintenanceEnables Claude Code to search and retrieve past chat history from Claude.ai exports and Claude Code sessions, allowing the AI to reference previous conversations and decisions.MIT