skeino

A reusable, embeddable replacement for the langgraph dev HTTP server.

📖 Full documentation: https://ranjitjana027.github.io/skeino/

skeino exposes the LangGraph Studio-compatible REST surface (threads, runs, streaming, assistants) over any user-supplied LangGraph graph. It is built to be:

Modular — api, ops, persistence, streaming, serialization are separate concerns with explicit dependencies.
Pluggable — checkpointers register themselves via a small decorator-based registry; Postgres and in-memory ship out of the box, Redis / Mongo / etc. can be added without touching skeino core.
Two entry points — programmatic create_app(graphs={...}) and a high-level from_langgraph_json("langgraph.json") loader.

Install

pip install skeino

Quickstart

# Programmatic
from skeino import create_app, SkeinoSettings
from my_project.graph import graph

app = create_app(
    graphs={"my_agent": graph},
    settings=SkeinoSettings(
        checkpointer_scheme="postgres",  # pip install 'skeino[postgres]'
        checkpointer_uri="postgresql://...",
    ),
)

# langgraph.json driven
from skeino import from_langgraph_json
app = from_langgraph_json("langgraph.json")

Run with uvicorn:

uvicorn app:app --reload --port 8000

Endpoints (v1)

GET /info, GET /api/health, GET /api/initial-message
POST /assistants/search, GET /assistants/{id}, GET /assistants/{id}/{schemas|graph|subgraphs}
POST /threads, GET /threads/{id}, POST /threads/search, GET /threads/{id}/state, GET|POST /threads/{id}/history
POST /threads/{id}/runs, POST /threads/{id}/runs/stream, GET /threads/{id}/runs, GET /threads/{id}/runs/{run_id}

Out of scope for v1: /store/*, /runs/crons, webhooks, auth.

Status

Pre-release. API may change.

Contributing

Contributions are welcome — see CONTRIBUTING.md for local setup and the required checks.

License

Licensed under the Apache License 2.0.

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