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doris-mcp-server

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Apache Doris MCP Server

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# Apache Doris MCP Server

[English](README.md) | [简体中文](README.zh-CN.md)

Apache Doris MCP Server exposes read-only Apache Doris capabilities to MCP
Hosts and AI agents over MCP `2026-07-28`. Version 1.0 replaces a large flat
tool surface with eight stable domains and fifty-five progressively disclosed
child capabilities, while keeping runtime availability, authorization, input
schemas, output schemas, and failure behavior explicit.

## Release status

The package version is `1.0.0`. MCP `2026-07-28` protocol compatibility on
`master` is **Generally Available (GA)** on Streamable HTTP and stdio.
This GA statement is scoped to protocol compatibility; the Python package
classifier remains **Beta**, and the documented deployment limits still apply.

Before upgrading, read the [1.0 release notes](docs/release-notes-1.0.0.md),
the [1.0 migration guide](docs/migration-1.0.0.md), and the generated
[8-domain/55-child registry](docs/tool-registry.md). The detailed release
record is [Issue #189](https://github.com/apache/doris-mcp-server/issues/189).

## Architecture at a glance

```text
MCP Host
  -> stdio or Streamable HTTP
  -> transport security and authentication
  -> MCP protocol validation and authorization
  -> stable domain discovery
  -> route-aware Doris capability detection
  -> exact child dispatch and read-only runtime
  -> request-specific Doris route and RBAC
  -> bounded, schema-validated result
```

The default `hierarchical` mode exposes these domains:

| Domain | Children | Responsibility |
|---|---:|---|
| `doris_catalog` | 5 | catalogs, databases, tables, table context, size |
| `doris_query` | 7 | query, explain, profile, diagnosis, slow queries, explicit ADBC |
| `doris_cluster` | 11 | nodes, tasks, metrics, memory, cache, compaction, workloads |
| `doris_pipeline` | 5 | ingestion, materialized views, freshness, dependencies |
| `doris_search` | 4 | text/vector/hybrid search, analyzers, indexes, diagnosis |
| `doris_governance` | 8 | quality, storage, lineage, audit, UDFs, auth mapping |
| `doris_lakehouse` | 3 | external catalogs, lakehouse tables, Variant |
| `doris_semantic` | 12 | optional Apache Ossie grounding and MetricFlow consumption |

Call a domain with `{}` to discover its authorized children and exact schemas.
Call the same domain again with `child_tool`, `arguments`, and the returned
`manifest_version`. Hosts that cannot use progressive disclosure may set
`MCP_TOOL_EXPOSURE_MODE=flat` before startup; this exposes the same 55 children
under collision-free formal names and does not restore pre-1.0 aliases.

See [Architecture](docs/architecture/overview.md),
[Request lifecycle](docs/architecture/request-lifecycle.md), and
[Tool domains](docs/capabilities/tool-domains.md).

## Quick start

Requirements:

- Python 3.12 or later;
- Apache Doris 2.0.0 or later;
- network access to the Doris FE MySQL endpoint, normally port `9030`.

Install the pinned release:

```bash
pip install doris-mcp-server==1.0.0
```

`doris-mcp-server` starts the Server. `doris-mcp-client` is a separate client;
the two commands are not interchangeable.

Configure a Doris route:

```bash
export DORIS_HOST=127.0.0.1
export DORIS_PORT=9030
export DORIS_USER=mcp_reader
export DORIS_PASSWORD='replace-me'
export DORIS_DATABASE=information_schema
```

Start Streamable HTTP on loopback:

```bash
doris-mcp-server \
  --transport http \
  --host 127.0.0.1 \
  --port 3000
```

Endpoints:

- MCP: `POST http://127.0.0.1:3000/mcp`
- legacy MCP (opt-in): `POST http://127.0.0.1:3000/mcp/legacy`
- liveness: `GET http://127.0.0.1:3000/live`
- Doris-backed readiness: `GET http://127.0.0.1:3000/ready`

Hosts limited to handshake-era Streamable HTTP, including Dify 1.16.1 with
MCP `2025-06-18`, must set `ENABLE_LEGACY_HTTP_ADAPTER=true` and connect to
`/mcp/legacy`. The adapter changes only the protocol boundary; it preserves the
same 1.0 tools, authorization, capability gates, and read-only execution.

Or run stdio for a local Host:

```bash
doris-mcp-server --transport stdio
```

See the complete [Quick start](docs/getting-started/quickstart.md) and
[Host integration guide](docs/integrations/hosts.md).

## Security boundary

- The built-in 1.0 catalog is read-only; `doris_admin` is reserved and not
  registered.
- Static tokens, JWT, external OAuth/OIDC, and Doris-backed OAuth are supported
  under mutually validated configuration boundaries.
- Domain discovery and child execution use exact authorization identifiers.
- Doris RBAC remains the final authority for visible objects and data.
- SQL shape, identifiers, parameters, timeout, rows, bytes, and result schemas
  are bounded before data leaves the Server.
- Secrets and backend errors are redacted from public results and logs.
- Non-loopback HTTP requires authentication unless an explicit dangerous
  development override is enabled.

Read the [Security and permission model](docs/security/security-model.md) and
the [Doris fine-grained access guide](docs/doris-fine-grained-access-control.md).

## Reliability boundary

The Server uses deterministic manifests and errors, signed expiring cursors,
route-aware capability snapshots, bounded stale fallback, request-specific
connection routing, multi-FE failover, liveness/readiness separation, output
Schema validation, and sanitized trace propagation. Unsupported or
misconfigured capabilities remain discoverable with `callable=false` and fail
closed when called.

Current limits include process-local Doris-backed OAuth, explicit-only ADBC
that is disabled by default and fail-closed on token-bound routes, optional
read-only Ossie grounding, an optional MetricFlow compiler sidecar whose SQL
must execute through the bounded MCP query runtime, and best-effort native
lineage delivery. See [Reliability and limits](docs/operations/reliability.md).

## Documentation

The root README is intentionally an entry point. The bilingual documentation
system is indexed at:

- [English documentation](docs/README.md)
- [简体中文文档](docs/README.zh-CN.md)

Primary guides:

- [Architecture](docs/architecture/overview.md)
- [Request and data flow](docs/architecture/request-lifecycle.md)
- [Tool domains](docs/capabilities/tool-domains.md)
- [Capability availability](docs/capabilities/availability.md)
- [Doris version capability matrix](docs/capabilities/doris-version-matrix.md)
- [MetricFlow integration](docs/integrations/metricflow.md)
- [MCP 2026-07-28 contract](docs/protocol/mcp-2026-07-28.md)
- [Security model](docs/security/security-model.md)
- [Deployment](docs/operations/deployment.md)
- [Reliability and limits](docs/operations/reliability.md)
- [Troubleshooting](docs/operations/troubleshooting.md)
- [Configuration reference](docs/reference/configuration.md)
- [Host integrations](docs/integrations/hosts.md)
- [Custom tool providers](docs/custom-tool-providers.md)
- [Contributing](docs/development/contributing.md)

## Development

```bash
git clone https://github.com/apache/doris-mcp-server.git
cd doris-mcp-server
uv sync --group dev
uv run pytest
```

Generated artifacts must remain synchronized:

```bash
uv run python generate_tool_catalog.py --check
uv lock --check
```

See [Contributing and verification](docs/development/contributing.md).

## License

Apache License 2.0. See [LICENSE.txt](LICENSE.txt) and [NOTICE](NOTICE).

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