Pre-release

This release is a pre-release and may not be stable for production use.

OpenTrace

Index any codebase into a knowledge graph — then query it with AI via MCP.

OpenTrace parses source code with tree-sitter, extracts classes, functions, imports, and call relationships, and stores the result in an embedded graph database. The graph is queryable through a built-in MCP server, so tools like Claude Code can search, traverse, and understand your codebase structure.

Install

pip install opentraceai

Or run directly with uv:

uvx opentraceai index .

Requires Python 3.12+.

Quick Start

1. Index a codebase

opentraceai index /path/to/repo

This parses every supported file, extracts symbols and relationships, and writes the graph to .opentrace/index.db.

$ opentraceai index ~/projects/myapp
Opening database at .opentrace/index.db ...
Indexing /home/user/projects/myapp ...
  1284 nodes, 3421 relationships, 187 files, 95 classes, 412 functions
Done in 4.2s.

2. Query via MCP

Start a stdio MCP server against the indexed database:

opentraceai mcp

The database is auto-discovered by walking up from the current directory to the git root, looking for .opentrace/index.db. You can override with --db <path>.

Claude Code

Add OpenTrace to Claude Code as a plugin, or configure it manually in your project's .mcp.json:

{
  "mcpServers": {
    "opentrace": {
      "type": "stdio",
      "command": "uvx",
      "args": ["opentraceai", "mcp"]
    }
  }
}

MCP Tools

Tool	Description
`search_graph`	Full-text search across nodes by name or properties
`list_nodes`	List nodes by type (Class, Function, File, etc.)
`get_node`	Get a node's full details and immediate neighbors
`traverse_graph`	Walk relationships from a node (outgoing, incoming, or both)
`get_stats`	Graph statistics — node/edge counts broken down by type

Supported Languages

Full extraction (symbols + calls + imports)	Structural extraction (symbols only)
Python, TypeScript/JavaScript, Go	Rust, Java, Kotlin, C#, C/C++, Ruby, Swift

Config and data files (JSON, YAML, TOML, Protobuf, SQL, GraphQL, Bash) are indexed as file nodes.

CLI Reference

`opentraceai index [PATH]`

Index a local codebase into a LadybugDB knowledge graph.

Option	Default	Description
`PATH`	`.`	Directory to index
`--db`	`.opentrace/index.db`	Database path
`--repo-id`	directory name	Repository identifier
`--batch-size`	`200`	Items per write batch
`-v, --verbose`	off	Debug logging

`opentraceai mcp`

Start a stdio MCP server exposing graph query tools.

Option	Default	Description
`--db`	auto-discovered	Database path
`-v, --verbose`	off	Debug logging

`opentraceai stats`

Display graph statistics (node/edge counts by type).

Option	Default	Description
`--db`	auto-discovered	Database path
`--output`	`text`	Output format (`text` or `json`)

`opentraceai serve`

Start an HTTP server exposing the graph database as a REST API.

Option	Default	Description
`--db`	auto-discovered	Database path
`--host`	`127.0.0.1`	Bind address
`--port`	`8787`	Bind port
`-v, --verbose`	off	Debug logging

`opentraceai query QUERY_STRING`

Run a Cypher or full-text search query against the graph database.

Option	Default	Description
`--db`	auto-discovered	Database path
`-t, --type`	`cypher`	Query language (`cypher` or `fts`)
`--limit`	`100`	Max rows (FTS only)
`--output`	`table`	Output format (`table`, `json`, or `jsonl`)

`opentraceai export [OUTPUT]`

Export the graph database as a .parquet.zip archive.

`opentraceai import ARCHIVE`

Import a .parquet.zip archive into the graph database.

`opentraceai impact FILE_PATH`

Analyze the blast radius of changes to a file.

`opentraceai config`

Read or write project configuration (.opentrace/config.yaml). Subcommands: set, get, show, path.

`opentraceai login` / `logout` / `whoami` / `refresh`

Authenticate with api.opentrace.ai.

Development

uv sync          # Install dependencies
uv run pytest    # Run tests
uv run ruff check src/ tests/   # Lint
uv run ruff format src/ tests/  # Format

Part of OpenTrace

This package is the CLI/MCP component of OpenTrace, an open-source platform for mapping system architecture into knowledge graphs. The full project also includes a browser-based graph explorer at oss.opentrace.ai.

License

Apache License 2.0

Release files for opentraceai 0.4.0.dev323159

For a detailed explanation of source distributions (sdists) and built distributions (wheels), please see the package formats documentation.

Source distribution (sdist)

Source distribution for opentraceai 0.4.0.dev323159
File	Size	Uploaded
opentraceai-0.4.0.dev323159.tar.gz	242.1 kB	Apr 13, 2026	Details

Built distribution (wheel)

Table of built distributions (wheels) for opentraceai 0.4.0.dev323159
File	Interpreter	ABI	Platform	Reset
opentraceai-0.4.0.dev323159-py3-none-any.whl 123.9 kB Apr 13, 2026	Python 3	none	any	Details

Total release size: 366.0 kB

Release files / opentraceai-0.4.0.dev323159.tar.gz

Download URL	opentraceai-0.4.0.dev323159.tar.gz
Size	242.1 kB
Tags	Source
SHA-256 checksum How to use checksums	`3be357152df0085f6b1d4543bd4925f5a9a2903b0885662c41e8b95862776110`
BLAKE2b-256 checksum How to use checksums	`ebd3a9057b83f954b0df80aff404bf78e5e962898463b7cd169fedc8270ab99b`
Upload date	Apr 13, 2026
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Provenance

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Identity

Publishing platform: GitHub Actions
Publishing repository: github.com/opentrace/opentrace
Publishing commit: github.com/opentrace/opentrace/tree/2900c411bcc5a427cf255a4e9c9cde55084c33bf

Workflow

Publishing configuration: github.com/opentrace/opentrace/blob/2900c411bcc5a427cf255a4e9c9cde55084c33bf/.github/workflows/publish-preview.yml
Publishing logs: github.com/opentrace/opentrace/actions/runs/24334503291/attempts/1

Artifact

Subject: opentraceai-0.4.0.dev323159.tar.gz
SHA-256 checksum: 3be357152df0085f6b1d4543bd4925f5a9a2903b0885662c41e8b95862776110 Verifying attestations

Release files / opentraceai-0.4.0.dev323159-py3-none-any.whl

Download URL	opentraceai-0.4.0.dev323159-py3-none-any.whl
Size	123.9 kB
Tags	Python 3
SHA-256 checksum How to use checksums	`5200ad6efe9b8b0544a114e2081a3a0627e36d60a6e55a755ff2e650f047cc39`
BLAKE2b-256 checksum How to use checksums	`de216771e3335701718046d22fe2c5a16bc09fca57e4693aba42f417422a50aa`
Upload date	Apr 13, 2026
Uploaded using Trusted Publishing? What is trusted publishing?	Yes
Uploaded via	`twine/6.1.0 CPython/3.13.13`

Provenance

Identity

Publishing platform: GitHub Actions
Publishing repository: github.com/opentrace/opentrace
Publishing commit: github.com/opentrace/opentrace/tree/2900c411bcc5a427cf255a4e9c9cde55084c33bf

Workflow

Publishing configuration: github.com/opentrace/opentrace/blob/2900c411bcc5a427cf255a4e9c9cde55084c33bf/.github/workflows/publish-preview.yml
Publishing logs: github.com/opentrace/opentrace/actions/runs/24334503291/attempts/1

Artifact

Subject: opentraceai-0.4.0.dev323159-py3-none-any.whl
SHA-256 checksum: 5200ad6efe9b8b0544a114e2081a3a0627e36d60a6e55a755ff2e650f047cc39 Verifying attestations