@us-all/airflow-mcp

Airflow MCP server — read DAGs, runs, task instances, log tails; trigger and clear (write-gated). Built on @us-all/mcp-toolkit.

A focused MCP for the Airflow 3.x REST API (/api/v2). Read by default; airflow-trigger-dag and airflow-clear-task are gated behind AIRFLOW_ALLOW_WRITE=true. Auth is JWT via SimpleAuthManager — supply AIRFLOW_USERNAME + AIRFLOW_PASSWORD and the server mints/refreshes the token transparently.

For deeper dbt integration (manifest parsing, run-results history, source freshness, per-column test coverage, lineage walks, custom DQ result tables), install the companion @us-all/dbt-mcp alongside.

• 7 tools in airflow + meta categories
• 2 MCP Prompts for DAG triage workflows
• 1 aggregation tool that replaces the list-runs → get-task-instances combo

Install

pnpm add -D @us-all/airflow-mcp

Run

AIRFLOW_API_URL=http://airflow.example.com:8080 \
AIRFLOW_USERNAME=admin AIRFLOW_PASSWORD=... \
npx @us-all/airflow-mcp

Pass the host base only — the server prepends /api/v2 internally. A trailing /api/v1 or /api/v2 is stripped if supplied. JWT tokens are cached for the lifetime of the session and refreshed 1 minute before they expire.

The server speaks MCP stdio; wire it into Claude Desktop / Cursor / any MCP client. Set MCP_TRANSPORT=http to opt in to Streamable HTTP transport (Bearer auth, /health endpoint).

Tools

airflow (6 + 1 aggregation)

| Tool | Description | |------|-------------| | airflow-list-dags | List active DAGs with tag/search filters | | airflow-list-runs | Recent runs of one DAG (state filter, ordered newest first) | | airflow-get-task-instances | Task instances for a specific DAG run | | airflow-get-task-logs | Tail (last N kB) of one task instance log | | airflow-trigger-dag | Trigger a new run (write-gated) | | airflow-clear-task | Clear specific task instances → re-run (write-gated) | | dag-health-rollup | Aggregated DAG health: success rate + avg duration + last failed run + failing tasks |

meta

search-tools — natural-language tool discovery.

Prompts

| Prompt | Use when | |--------|----------| | dag-failure-triage | "Why did DAG X fail?" — pulls runs, isolates failure, dumps logs, proposes remediation | | dag-schedule-audit | "Sweep all DAGs for low success rate and stuck runs" |

Environment variables

| Env | Required | Notes | |-----|----------|-------| | AIRFLOW_API_URL | yes | Airflow host base, e.g. http://airflow.example.com:8080. Trailing /api/v1 or /api/v2 is stripped if present | | AIRFLOW_USERNAME | yes | Username for JWT minting via SimpleAuthManager /auth/token | | AIRFLOW_PASSWORD | yes | Password for JWT minting (secret) | | AIRFLOW_ALLOW_WRITE | no | true enables airflow-trigger-dag / airflow-clear-task | | AIRFLOW_TOOLS / AIRFLOW_DISABLE | no | Category toggles |

Tested-against schemas

• Airflow 3.0–3.2 /api/v2 (verified against 3.2.1, current Airflow release as of 2026-05). Airflow 2.x is not supported by v0.2+ because basic auth + /api/v1 were removed; pin to @us-all/[email protected] for Airflow 2.x deployments.

Companion server

For dbt artifact parsing, run-results history, and DQ result tables, install @us-all/dbt-mcp alongside.

Build

pnpm install
pnpm run build      # tsc → dist/
pnpm test           # vitest
pnpm run smoke      # spawns dist/index.js, calls initialize + tools/list (set env first)

License

MIT — see LICENSE.