[English](./README.md) | [日本語](./README.ja.md)

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# drt — data reverse tool

> Reverse ETL for the code-first data stack.

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**drt** syncs data from your data warehouse to external services — declaratively, via YAML and CLI.
Think `dbt run` → `drt run`. Same developer experience, opposite data direction.

<p align="center">
  <img src="docs/assets/quickstart.gif" alt="drt quickstart demo" width="700">
</p>

```bash
pip install drt-core          # core (DuckDB included)
drt init && drt run
```

---

## Why drt?

| Problem                              | drt's answer             |
| ------------------------------------ | ------------------------ |
| Census/Hightouch are expensive SaaS  | Free, self-hosted OSS    |
| GUI-first tools don't fit CI/CD      | CLI + YAML, Git-native   |
| dbt/dlt ecosystem has no reverse leg | Same philosophy, same DX |
| LLM/MCP era makes GUI SaaS overkill  | LLM-native by design     |

> **What's always free?** All connectors, CLI, MCP server, and sync engine. See [OPEN_CORE.md](./OPEN_CORE.md) for the open core boundary.

---

## Quickstart

No cloud accounts needed — runs locally with DuckDB in about 5 minutes.

### 1. Install

```bash
pip install drt-core
```

> For cloud sources: `pip install drt-core[bigquery]`, `drt-core[postgres]`, etc.

### 2. Set up a project

```bash
mkdir my-drt-project && cd my-drt-project
drt init   # select "duckdb" as source
```

### 3. Create sample data

```bash
python -c "
import duckdb
c = duckdb.connect('warehouse.duckdb')
c.execute('''CREATE TABLE IF NOT EXISTS users AS SELECT * FROM (VALUES
  (1, 'Alice', 'alice@example.com'),
  (2, 'Bob',   'bob@example.com'),
  (3, 'Carol', 'carol@example.com')
) t(id, name, email)''')
c.close()
"
```

### 4. Create a sync

```yaml
# syncs/post_users.yml
name: post_users
description: "POST user records to an API"
model: ref('users')
destination:
  type: rest_api
  url: "https://httpbin.org/post"
  method: POST
  headers:
    Content-Type: "application/json"
  body_template: |
    { "id": {{ row.id }}, "name": "{{ row.name }}", "email": "{{ row.email }}" }
sync:
  mode: full
  batch_size: 1
  on_error: fail
```

### 5. Run

```bash
drt run --dry-run   # preview, no data sent
drt run             # run for real
drt status          # check results
```

> See [examples/](examples/) for more: Slack, Google Sheets, HubSpot, GitHub Actions, etc.

---

## CLI Reference

```bash
drt init                    # initialize project
drt list                    # list sync definitions
drt sources                 # list available source connectors
drt destinations            # list available destination connectors
drt run                     # run all syncs
drt run --select <name>     # run a specific sync
drt run --all               # discover and run all syncs
drt run --select tag:<tag>  # run syncs matching a tag
drt run --threads 4         # parallel sync execution
drt run --dry-run           # dry run
drt run --verbose           # show row-level error details
drt run --output json       # structured JSON output for CI/scripting
drt run --log-format json   # structured JSON logging to stderr
drt run --profile prd       # override profile (or DRT_PROFILE env var)
drt run --cursor-value '…'  # override watermark cursor for backfill
drt test                    # run post-sync validation tests
drt test --select <name>    # test a specific sync
drt validate                # validate sync YAML configs
drt status                  # show recent sync status
drt status --output json    # JSON output for status
drt serve                   # start HTTP webhook endpoint
drt mcp run                 # start MCP server (requires drt-core[mcp])
drt --install-completion    # install shell completion (bash/zsh/fish)
drt --show-completion       # show completion script
```

### Shell completion

Shell completion is supported for bash, zsh, and fish:

```bash
# Recommended: auto-install for your current shell (idempotent)
drt --install-completion

# Or manually add to your shell config (run once from the target shell)
drt --show-completion >> ~/.bashrc   # bash
drt --show-completion >> ~/.zshrc    # zsh
drt --show-completion > ~/.config/fish/completions/drt.fish  # fish
```

> **Note:** `--show-completion` outputs the script for your _current_ shell. Run it from the shell you want to configure. The manual `>>` append is not idempotent — run it once only.

After installation, restart your shell and tab-complete commands and options.

---

## MCP Server

Connect drt to Claude, Cursor, or any MCP-compatible client so you can run syncs, check status, and validate configs without leaving your AI environment.

```bash
pip install drt-core[mcp]
drt mcp run
```

**Claude Desktop** (`~/Library/Application Support/Claude/claude_desktop_config.json`):

```json
{
  "mcpServers": {
    "drt": {
      "command": "drt",
      "args": ["mcp", "run"]
    }
  }
}
```

**Available MCP tools:**

| Tool                  | What it does                            |
| --------------------- | --------------------------------------- |
| `drt_list_syncs`      | List all sync definitions               |
| `drt_run_sync`        | Run a sync (supports `dry_run`)         |
| `drt_get_status`      | Get last run result(s)                  |
| `drt_validate`        | Validate sync YAML configs              |
| `drt_get_schema`      | Return JSON Schema for config files     |
| `drt_list_connectors` | List available sources and destinations |

---

## AI Skills for Claude Code

Install the official Claude Code skills to generate YAML, debug failures, and migrate from other tools — all from the chat interface.

### Install via Plugin Marketplace (recommended)

```bash
/plugin marketplace add drt-hub/drt
/plugin install drt@drt-hub
```

> **Tip:** Enable auto-update so you always get the latest skills when drt is updated:
> `/plugin` → Marketplaces → drt-hub → Enable auto-update

### Manual install (slash commands)

Copy the files from `.claude/commands/` into your drt project's `.claude/commands/` directory.

| Skill              | Trigger               | What it does                               |
| ------------------ | --------------------- | ------------------------------------------ |
| `/drt-create-sync` | "create a sync"       | Generates valid sync YAML from your intent |
| `/drt-debug`       | "sync failed"         | Diagnoses errors and suggests fixes        |
| `/drt-init`        | "set up drt"          | Guides through project initialization      |
| `/drt-migrate`     | "migrate from Census" | Converts existing configs to drt YAML      |

---

## Connectors

### Sources

| Connector  | Status    | Install                            | Auth                                          |
| ---------- | --------- | ---------------------------------- | --------------------------------------------- |
| BigQuery   | ✅ v0.1   | `pip install drt-core[bigquery]`   | Application Default / Service Account Keyfile |
| DuckDB     | ✅ v0.1   | (core)                             | File path                                     |
| PostgreSQL | ✅ v0.1   | `pip install drt-core[postgres]`   | Password (env var)                            |
| Snowflake  | ✅ v0.5   | `pip install drt-core[snowflake]`  | Password (env var)                            |
| SQLite     | ✅ v0.4.2 | (core)                             | File path                                     |
| Redshift   | ✅ v0.3.4 | `pip install drt-core[redshift]`   | Password (env var)                            |
| ClickHouse | ✅ v0.4.3 | `pip install drt-core[clickhouse]` | Password (env var)                            |
| MySQL      | ✅ v0.5   | `pip install drt-core[mysql]`      | Password (env var)                            |
| Databricks | ✅ v0.6   | `pip install drt-core[databricks]` | Access Token (env var)                        |
| SQL Server | ✅ v0.6   | `pip install drt-core[sqlserver]`  | Password (env var)                            |

### Destinations

| Connector               | Status    | Install                            | Auth                              |
| ----------------------- | --------- | ---------------------------------- | --------------------------------- |
| REST API                | ✅ v0.1   | (core)                             | Bearer / API Key / Basic / OAuth2 |
| Slack Incoming Webhook  | ✅ v0.1   | (core)                             | Webhook URL                       |
| Discord Webhook         | ✅ v0.4.2 | (core)                             | Webhook URL                       |
| GitHub Actions          | ✅ v0.1   | (core)                             | Token (env var)                   |
| HubSpot                 | ✅ v0.1   | (core)                             | Token (env var)                   |
| Google Ads              | ✅ v0.6   | (core)                             | OAuth2 Client Credentials         |
| Google Sheets           | ✅ v0.4   | `pip install drt-core[sheets]`     | Service Account Keyfile           |
| PostgreSQL (upsert)     | ✅ v0.4   | `pip install drt-core[postgres]`   | Password (env var)                |
| MySQL (upsert)          | ✅ v0.4   | `pip install drt-core[mysql]`      | Password (env var)                |
| ClickHouse              | ✅ v0.5   | `pip install drt-core[clickhouse]` | Password (env var)                |
| Parquet file            | ✅ v0.5   | `pip install drt-core[parquet]`    | File path                         |
| Microsoft Teams Webhook | ✅ v0.5   | (core)                             | Webhook URL                       |
| CSV / JSON / JSONL file | ✅ v0.5   | (core)                             | File path                         |
| Jira                    | ✅ v0.5   | (core)                             | Basic (email + API token)         |
| Linear                  | ✅ v0.5   | (core)                             | API Key (env var)                 |
| SendGrid                | ✅ v0.5   | (core)                             | API Key (env var)                 |
| Notion                  | ✅ v0.6   | (core)                             | Bearer Token (env var)            |
| Twilio SMS              | ✅ v0.6   | (core)                             | Basic (Account SID + Auth Token)  |
| Intercom                | ✅ v0.6   | (core)                             | Bearer Token (env var)            |
| Email SMTP              | ✅ v0.6   | (core)                             | Username / Password (env var)     |
| Salesforce Bulk API 2.0 | ✅ v0.6   | (core)                             | OAuth2 (username-password)        |
| Staged Upload           | ✅ v0.6   | (core)                             | Configurable per provider         |
| Snowflake               | ✅ v0.7   | `pip install drt-core[snowflake]`  | Password (env var)                |

### Integrations

| Connector           | Status  | Install                   |
| ------------------- | ------- | ------------------------- |
| Dagster             | ✅ v0.4 | `pip install dagster-drt` |
| Prefect             | ✅ v0.6 | (core)                    |
| Airflow             | ✅ v0.6 | (core)                    |
| dbt manifest reader | ✅ v0.4 | (core)                    |

---

## Roadmap

> **Upcoming releases → [ROADMAP.md](ROADMAP.md)** (scope, themes, targets)
> **Issue-level tracking → [GitHub Milestones](https://github.com/drt-hub/drt/milestones)**
> **Looking to contribute? → [Good First Issues](https://github.com/drt-hub/drt/issues?q=is%3Aopen+label%3A%22good+first+issue%22)**

**Shipped:**

| Version       | Focus                                                                                                                                                                                                                                                                                                                                                                                                              |
| ------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ |
| **v0.1** ✅   | BigQuery / DuckDB / Postgres sources · REST API / Slack / GitHub Actions / HubSpot destinations · CLI · dry-run                                                                                                                                                                                                                                                                                                    |
| **v0.2** ✅   | Incremental sync (`cursor_field` watermark) · retry config per-sync                                                                                                                                                                                                                                                                                                                                                |
| **v0.3** ✅   | MCP Server (`drt mcp run`) · AI Skills for Claude Code · LLM-readable docs · row-level errors · security hardening · Redshift source                                                                                                                                                                                                                                                                               |
| **v0.4** ✅   | Google Sheets / PostgreSQL / MySQL destinations · dagster-drt · dbt manifest reader · type safety overhaul                                                                                                                                                                                                                                                                                                         |
| **v0.5** ✅   | Snowflake / MySQL sources · ClickHouse / Parquet / Teams / CSV+JSON / Jira / Linear / SendGrid destinations · `drt test` · `--output json` · `--profile` · `${VAR}` substitution · dbt manifest · secrets.toml · Docker                                                                                                                                                                                            |
| **v0.5.4** ✅ | `destination_lookup` — resolve FK values by querying destination DB during sync (MySQL / Postgres / ClickHouse)                                                                                                                                                                                                                                                                                                    |
| **v0.6** ✅   | Databricks / SQL Server sources · Notion / Twilio / Intercom / Email SMTP / Salesforce Bulk / Staged Upload destinations · Airflow / Prefect integrations · `drt serve` · `drt sources` / `drt destinations` · `--threads` parallel execution · `--log-format json` · `--cursor-value` · `watermark.default_value` · test validators (freshness, unique, accepted_values) · JSON Schema validation · GOVERNANCE.md |
| **v0.7** ✅   | **Production Ready** — graceful shutdown on SIGTERM/SIGINT · per-destination retry override · sync execution history · zero-downtime atomic table swap · `json_columns` config · FK existence check (`lookups.check_only`) · Slack/webhook failure alerts · `drt doctor` · `--quiet` flag · `drt test --output json` / `--dry-run` · Snowflake destination · GitHub Codespaces playground · `OPEN_CORE.md`                                                                                                                                                                                                                                                              |
| **v0.7.1** ✅ | `drt run --dry-run --diff` for record-level preview · tz-aware cursor stringification fix · `on_error=fail` alignment for Notion / REST API / Email SMTP · `VERSIONING.md` semver & deprecation policy                                                                                                                                                                                                                                                                                                                                                                                                                                                            |
| **v0.7.2** ✅ | **Opt-in anonymous telemetry** (PostHog Cloud EU, off by default, allow-list payload, `DO_NOT_TRACK` honored) · deprecation warnings in `drt validate` · Postgres destination `psycopg2.sql` SQL composition                                                                                                                                                                                                                                                                                                                                                                                                                                                       |

**Next:** [v0.8 Cloud Destinations & Growth](ROADMAP.md#v08--cloud-destinations--growth) → [v0.9 Enterprise Foundation](ROADMAP.md#v09--enterprise-foundation) → [v1.0 Stable Release](ROADMAP.md#v10--stable-release) → [v1.x Rust Engine](ROADMAP.md#v1x--rust-engine)

---

## Orchestration: dagster-drt

Community-maintained [Dagster](https://dagster.io/) integration. Expose drt syncs as Dagster assets with full observability.

```bash
pip install dagster-drt
```

```python
from dagster import AssetExecutionContext, Definitions
from dagster_drt import drt_assets, DagsterDrtResource

@drt_assets(project_dir="path/to/drt-project")
def my_syncs(context: AssetExecutionContext, drt: DagsterDrtResource):
    yield from drt.run(context=context)

defs = Definitions(
    assets=[my_syncs],
    resources={"drt": DagsterDrtResource(project_dir="path/to/drt-project")},
)
```

See [dagster-drt README](integrations/dagster-drt/README.md) for full API docs (Translator, Pipes support, DrtConfig dry-run, MaterializeResult).

---

## Ecosystem

drt is designed to work alongside, not against, the modern data stack:

<p align="center">
  <img src="docs/assets/ecosystem.png" alt="drt ecosystem — dlt load, dbt transform, drt activate" width="700">
</p>

---

## Telemetry

drt collects **no telemetry by default**. Opting in helps us understand which sources / destinations / sync modes are actually used, so we can prioritise.

```bash
drt config set telemetry.enabled true     # opt in
drt config show-telemetry                 # preview the exact payload that would be sent
drt config set telemetry.enabled false    # opt out
DO_NOT_TRACK=1 drt run                    # universal kill switch — overrides everything
```

When opted in, drt sends one `sync_completed` event per sync. The **only `properties`** we collect are these 9 fields: `drt_version`, `python_version`, `os`, `source_type`, `destination_type`, `sync_mode`, `rows_synced`, `duration_seconds`, `status`. The wire envelope additionally carries `event`, `distinct_id` (a per-machine random UUID at `~/.drt/.anonymous_id`), `timestamp`, and `api_key`. Sync names, model SQL, destination URLs, credentials, and project paths are **never** transmitted — the allow-list is enforced at the function-signature level in [`drt/telemetry.py`](drt/telemetry.py). By default events go to **PostHog Cloud (EU region)**; override with `DRT_TELEMETRY_ENDPOINT` and `DRT_TELEMETRY_API_KEY` for self-hosted PostHog or a custom collector.

> Note: drt itself never transmits your IP, but the receiving PostHog backend records the TCP source IP as `$ip`. See [docs/telemetry.md](docs/telemetry.md) for details and how to disable / substitute the backend.

For full details see [docs/telemetry.md](docs/telemetry.md).

## Contributing

We welcome contributions of all sizes — from typo fixes to new connectors. drt has a transparent [contributor ladder](GOVERNANCE.md#roles) so your work builds toward greater trust and responsibility over time.

- **Get started:** [CONTRIBUTING.md](CONTRIBUTING.md) — setup, workflow, and your first connector tutorial
- **Pick something to work on:** [Good First Issues](https://github.com/drt-hub/drt/issues?q=is%3Aopen+label%3A%22good+first+issue%22)
- **Understand how decisions are made:** [GOVERNANCE.md](GOVERNANCE.md)
- **What's free vs. enterprise:** [OPEN_CORE.md](OPEN_CORE.md)
- **Versioning & breaking changes:** [VERSIONING.md](VERSIONING.md)

## Contributors ✨

Thanks goes to these wonderful people ([emoji key](https://allcontributors.org/docs/en/emoji-key)):

<!-- ALL-CONTRIBUTORS-LIST:START - Do not remove or modify this section -->
<!-- prettier-ignore-start -->
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<table>
  <tbody>
    <tr>
      <td align="center" valign="top" width="14.28%"><a href="https://masukai.github.io/portfolio/"><img src="https://avatars.githubusercontent.com/u/37993351?v=4?s=100" width="100px;" alt="K.Masuda"/><br /><sub><b>K.Masuda</b></sub></a><br /><a href="https://github.com/drt-hub/drt/commits?author=masukai" title="Code">💻</a></td>
      <td align="center" valign="top" width="14.28%"><a href="https://www.youtube.com/@Coding_Moves"><img src="https://avatars.githubusercontent.com/u/178013839?v=4?s=100" width="100px;" alt="Moavia Amir"/><br /><sub><b>Moavia Amir</b></sub></a><br /><a href="https://github.com/drt-hub/drt/commits?author=Muawiya-contact" title="Code">💻</a></td>
      <td align="center" valign="top" width="14.28%"><a href="https://github.com/Khush-domadia"><img src="https://avatars.githubusercontent.com/u/188820207?v=4?s=100" width="100px;" alt="Khush Domadiya"/><br /><sub><b>Khush Domadiya</b></sub></a><br /><a href="https://github.com/drt-hub/drt/commits?author=Khush-domadia" title="Code">💻</a></td>
      <td align="center" valign="top" width="14.28%"><a href="https://pawansingh3889.github.io/"><img src="https://avatars.githubusercontent.com/u/42340841?v=4?s=100" width="100px;" alt="Pawan Singh Kapkoti"/><br /><sub><b>Pawan Singh Kapkoti</b></sub></a><br /><a href="https://github.com/drt-hub/drt/commits?author=Pawansingh3889" title="Code">💻</a></td>
      <td align="center" valign="top" width="14.28%"><a href="https://github.com/PFCAaron12"><img src="https://avatars.githubusercontent.com/u/64714302?v=4?s=100" width="100px;" alt="PFCAaron12"/><br /><sub><b>PFCAaron12</b></sub></a><br /><a href="https://github.com/drt-hub/drt/commits?author=PFCAaron12" title="Code">💻</a></td>
      <td align="center" valign="top" width="14.28%"><a href="https://github.com/armorbreak001"><img src="https://avatars.githubusercontent.com/u/274532465?v=4?s=100" width="100px;" alt="armorbreak001"/><br /><sub><b>armorbreak001</b></sub></a><br /><a href="https://github.com/drt-hub/drt/commits?author=armorbreak001" title="Code">💻</a></td>
      <td align="center" valign="top" width="14.28%"><a href="https://github.com/pureqin"><img src="https://avatars.githubusercontent.com/u/213101547?v=4?s=100" width="100px;" alt="pureqin"/><br /><sub><b>pureqin</b></sub></a><br /><a href="https://github.com/drt-hub/drt/commits?author=pureqin" title="Code">💻</a></td>
    </tr>
    <tr>
      <td align="center" valign="top" width="14.28%"><a href="https://github.com/wahajahmed010"><img src="https://avatars.githubusercontent.com/u/57330918?v=4?s=100" width="100px;" alt="Wahaj Ahmed"/><br /><sub><b>Wahaj Ahmed</b></sub></a><br /><a href="https://github.com/drt-hub/drt/commits?author=wahajahmed010" title="Code">💻</a></td>
      <td align="center" valign="top" width="14.28%"><a href="https://github.com/cian-ps"><img src="https://avatars.githubusercontent.com/u/231972213?v=4?s=100" width="100px;" alt="cian-ps"/><br /><sub><b>cian-ps</b></sub></a><br /><a href="https://github.com/drt-hub/drt/commits?author=cian-ps" title="Code">💻</a></td>
      <td align="center" valign="top" width="14.28%"><a href="https://github.com/xtreellaDev"><img src="https://avatars.githubusercontent.com/u/238762418?v=4?s=100" width="100px;" alt="Erik Estrella"/><br /><sub><b>Erik Estrella</b></sub></a><br /><a href="https://github.com/drt-hub/drt/commits?author=xtreellaDev" title="Code">💻</a></td>
      <td align="center" valign="top" width="14.28%"><a href="https://github.com/Ai-chan-0411"><img src="https://avatars.githubusercontent.com/u/275152799?v=4?s=100" width="100px;" alt="Ai (藍)"/><br /><sub><b>Ai (藍)</b></sub></a><br /><a href="https://github.com/drt-hub/drt/commits?author=Ai-chan-0411" title="Code">💻</a></td>
      <td align="center" valign="top" width="14.28%"><a href="https://github.com/GokulKashyap"><img src="https://avatars.githubusercontent.com/u/147384970?v=4?s=100" width="100px;" alt="GokulKashyap"/><br /><sub><b>GokulKashyap</b></sub></a><br /><a href="https://github.com/drt-hub/drt/commits?author=GokulKashyap" title="Code">💻</a> <a href="https://github.com/drt-hub/drt/commits?author=GokulKashyap" title="Tests">⚠️</a></td>
    </tr>
  </tbody>
  <tfoot>
    <tr>
      <td align="center" size="13px" colspan="7">
        <img src="https://raw.githubusercontent.com/all-contributors/all-contributors-cli/1b8533af435da9854653492b1327a23a4dbd0a10/assets/logo-small.svg">
          <a href="https://all-contributors.js.org/docs/en/bot/usage">Add your contributions</a>
        </img>
      </td>
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</table>

<!-- markdownlint-restore -->
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## Disclaimer

drt is an independent open-source project and is **not affiliated with,
endorsed by, or sponsored by** dbt Labs, dlt-hub, or any other company.

"dbt" is a registered trademark of dbt Labs, Inc.
"dlt" is a project maintained by dlt-hub.

drt is designed to complement these tools as part of the modern data stack,
but is a separate project with its own codebase and maintainers.

## License

Apache 2.0 — see [LICENSE](LICENSE).
