Pulls your git commits, test results, and Copilot chat history into a SQLite database that Claude can search through MCP tools. You get full-text search across commits and conversations, test failure queries linked to specific SHAs, and timeline views of recent activity. The server auto-ingests git and Copilot data on startup. For tests, you run `hindsight-mcp test` which wraps cargo-nextest and stores outcomes with durations and failure output. Useful when you want Claude to answer questions like "what tests are failing" or "summarize my work this week" using actual project history instead of just the current file context. Ships as a Rust binary that connects over stdio.
An MCP server for AI-assisted coding that leverages development history.
hindsight-mcp consolidates development data (git logs, test results, and GitHub Copilot sessions) into a searchable SQLite database, making it accessible to AI assistants through MCP tool calls in VS Code.
Key Features:
cargo install cargo-nextestcargo install hindsight-mcp
Create .vscode/mcp.json in your project:
{
"servers": {
"hindsight": {
"type": "stdio",
"command": "hindsight-mcp",
"args": ["--workspace", "${workspaceFolder}"]
}
}
}
Cmd+Shift+P)hindsight is listedThat's it! Copilot will use hindsight tools to answer questions about your development history.
| Tool | Purpose | Example Prompt |
|---|---|---|
hindsight_timeline | Chronological activity view | "Show recent commits and test runs" |
hindsight_search | Full-text search | "Find commits about authentication" |
hindsight_failing_tests | Query test failures | "What tests are failing?" |
hindsight_activity_summary | Aggregate stats | "Summarise my week" |
hindsight_commit_details | Commit info with tests | "Details for commit abc123" |
hindsight_ingest | Trigger data refresh | "Refresh development history" |
limit (int): Max events, default 50workspace (string): Filter by pathquery (string): Search query (required)source (string): "all", "commits", or "messages"limit (int): Max results, default 20limit (int): Max tests, default 50workspace (string): Filter by pathcommit (string): Filter by SHAdays (int): Days to summarise, default 7sha (string): Commit SHA (required)workspace (string): Path to ingest (required)source (string): "git", "copilot", or "all"incremental (bool): Only new data, default truelimit (int): Max itemsRun tests and automatically ingest results:
# Run all tests and ingest
hindsight-mcp test
# Test specific package
hindsight-mcp test -p my-crate
# Preview without writing to database
hindsight-mcp test --dry-run
The test command automatically:
cargo nextest with correct flagsFor CI pipelines or custom nextest invocations:
# Using stdin mode
NEXTEST_EXPERIMENTAL_LIBTEST_JSON=1 cargo nextest run \
--message-format libtest-json 2>/dev/null | \
hindsight-mcp test --stdin
# Using ingest command with explicit commit
NEXTEST_EXPERIMENTAL_LIBTEST_JSON=1 cargo nextest run \
--message-format libtest-json 2>/dev/null | \
hindsight-mcp ingest --tests --commit $(git rev-parse HEAD)
| Source | Data Collected |
|---|---|
| Git | Commits (SHA, author, message, timestamp, parents) |
| Tests | Run metadata, outcomes, durations, failure output |
| Copilot | Chat sessions, prompts, responses, attached files |
Git and Copilot data are ingested automatically. Test results require running hindsight-mcp test.
hindsight-mcp [OPTIONS] [COMMAND]
Commands:
ingest Ingest data from various sources
test Run tests and ingest results
Options:
-d, --database <PATH> Database path [default: ~/.hindsight/hindsight.db]
-w, --workspace <PATH> Workspace path [default: current directory]
-v, --verbose Debug logging
-q, --quiet Errors only
--skip-init Skip database init
-h, --help Print help
-V, --version Print version
hindsight-mcp test [OPTIONS] [-- <NEXTEST_ARGS>...]
Options:
-p, --package <PKG> Package(s) to test
--bin <BIN> Binary(ies) to run
-E, --filter <EXPR> Filter expression
--stdin Read from stdin
--dry-run Preview only
--no-commit Do not link to commit
--commit <SHA> Explicit commit SHA
--show-output Show test output
| Variable | Description |
|---|---|
HINDSIGHT_DATABASE | Database path |
HINDSIGHT_WORKSPACE | Default workspace |
| Platform | Default Path |
|---|---|
| macOS | ~/Library/Application Support/hindsight/hindsight.db |
| Linux | ~/.local/share/hindsight/hindsight.db |
| Windows | %LOCALAPPDATA%\hindsight\hindsight.db |
| Problem | Solution |
|---|---|
| Server does not start | Check binary path; run with --verbose |
| No data showing | Run hindsight_ingest tool via Copilot |
| Log interference | Use --quiet in production |
git clone https://github.com/Rbfinch/hindsight-mcp.git
cd hindsight-mcp
cargo build --release
cargo install cargo-nextest
cargo nextest run --workspace
hindsight/
├── crates/
│ ├── hindsight-mcp/ # MCP server binary
│ ├── hindsight-git/ # Git log processing
│ ├── hindsight-tests/ # Test result processing
│ └── hindsight-copilot/ # Copilot session parsing
cd crates/hindsight-tests
cargo +nightly fuzz run fuzz_nextest_run
cd crates/hindsight-copilot
cargo +nightly fuzz run fuzz_session_json
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