Shortest path: the Prefect API server exposes an OpenAPI spec that lists every route. - Self-hosted Prefect Server (default): - Docs (Swagger): http://YOUR_HOST:4200/api/docs - OpenAPI JSON: http://YOUR_HOST:4200/api/openapi.json - Prefect Cloud: - Docs: Cloud API docs - OpenAPI JSON: https://app.prefect.cloud/api/openapi.json Notes: - In Prefect 3.x, all routes are prefixed with

/api

by default (configurable via

PREFECT_SERVER_API_BASE_PATH

). - Health endpoints

/api/health

and

/api/ready

are open even if basic auth is enabled on Server. - Cloud calls require an API key; if

openapi.json

returns 401, include

Authorization: Bearer <PREFECT_API_KEY>

. Quick ways to dump every route path from the spec: - With curl/jq (Server):

curl -s <http://localhost:4200/api/openapi.json> | jq -r '.paths | keys[]' | sort

- With curl/jq (Cloud):

curl -s <https://app.prefect.cloud/api/openapi.json> | jq -r '.paths | keys[]' | sort

- With Python (works for both; add auth if needed):

import json, requests

url = "<http://localhost:4200/api/openapi.json>"  # or <https://app.prefect.cloud/api/openapi.json>
headers = {}  # For Cloud: {"Authorization": f"Bearer {PREFECT_API_KEY}"}
resp = requests.get(url, headers=headers)
resp.raise_for_status()
paths = sorted(resp.json().get("paths", {}).keys())
print("\n".join(paths))
print(f"\nTotal routes: {len(paths)}")

If you want, I can paste the full list of routes here for the latest Prefect 3.x release—just confirm: - Are you using self-hosted Server or Cloud? - If Server, what URL/port and are you using basic auth? - Do you want just the path list (e.g.,

/api/flow_runs/filter

) or also the HTTP methods and schemas? Helpful references: - Cloud interactive docs: Prefect Cloud API docs - REST API reference: Prefect REST API reference