sse kiota example

Uses uv and fastapi.

Important files

FastAPI backend sending SSE

OpenAPI Spec doc

Python client SSE test

Typescript client SSE test

How to generate client

Pre-reqs

Note

There is a devcontainer you should just use that but here is a list of things you'll need if not

1. Install uv (ran originally with 0.10.7)
2. Install docker
3. Install npm/node (ran originally with Node 24)

How to generate kiota clients for typescript and python

uv sync
uv run python generate.py

rm -rf generated/python && mkdir -p generated/python
docker run --user $(id -u):$(id -g) -v "./generated/python:/app/output" -v "./openapi.json:/app/openapi.json" mcr.microsoft.com/openapi/kiota:1.30.0 "generate" -l python -c PythonClient -n client -d openapi.json --exclude-backward-compatible --clean-output --additional-data false

rm -rf app/generated/typescript  && mkdir -p app/generated/typescript
docker run --user $(id -u):$(id -g) -v "./generated/typescript:/app/output" -v "./openapi.json:/app/openapi.json" mcr.microsoft.com/openapi/kiota:1.30.0 "generate" -l typescript -c FrontendClient -n client -d openapi.json --exclude-backward-compatible --clean-output --additional-data false

Running the example

Prerequisites

1. Install dependencies: uv sync

Start the FastAPI server

In one terminal window, start the FastAPI server using uv:

uv run fastapi dev

The server will start on http://localhost:8000. You should see output like:

INFO:     Uvicorn running on http://127.0.0.1:8000 (Press CTRL+C to quit)

Run the Python client verification script

In another terminal window, run the python verification script:

uv run python verify_sse_client.py

Note

Notice it'll run infinitely and not return any data as the client expects a full response before handling it.

Running typescript client verification

In another terminal window, run the typescript verification script:

cd app
npm run dev

Note

Notice it'll run infinitely and not return any data as the client expects a full response before handling it.