unum-cloud/UCall
Some data may be outdated — see provenance labels.
Web Serving and Remote Procedure Calls at 50x lower latency and 70x higher bandwidth than FastAPI, implementing JSON-RPC & REST over io_uring ☎️ observed · 2026-10-02
Health v2 · maintenance only
38/100
- Activity 34
- Release rhythm 9
- Longevity 99
How is this computed?
round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10) — computed 2026-10-21. Adoption (stars, forks) is never an input.
- gap_med: 245
- age_days: 1386
- days_rel: 399
- days_push: 399
- n_releases_24m: 2
Adoption not part of the score
1335 stars · 52 forks observed · 2026-10-02
What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-30, confidence not recorded
UCall is a high-performance JSON-RPC and REST serving library written in C with Python bindings, using io_uring and POSIX sockets to achieve far lower latency than FastAPI or gRPC. It exposes a FastAPI-like decorator API for defining remote procedures served over TCP/HTTP.
Use cases
- serve -rpc endpoints with minimal latency
- replace fastapi for high-throughput microservices
- build low-latency rpc backend in python
- expose python functions over rest or -rpc
- benchmark web serving frameworks
- handle thousands of requests per second on linux
When to choose
- you need much lower latency or higher throughput than FastAPI or gRPC
- you run on modern Linux kernels with io_uring support
- you want a simple decorator-based API for RPC services
When to avoid
- you need full REST ecosystem features like middleware, auth, or OpenAPI generation
- you deploy on non-Linux platforms without io_uring
- you need a mature framework with a large community and plugins
Facets
library · maturity active
rpc http-server web-framework serialization backend web-development apis performance developer-tools python c cli -rpc io-uring fastapi-alternative high-performance rest tcp simd linux
2 sources
- readme: https://github.com/unum-cloud/UCall · fetched 2026-10-02 · 0f6d0a6379b4
- homepage: https://unum-cloud.github.io/UCall/ · fetched 2026-08-29 · 69ac1c1f0e3f
Member repositories
| Repository | Role | Health v2 |
|---|---|---|
| unum-cloud/UCall | main | 38 |
For agents
markdown · JSON · MCP: product_card(name="unum-cloud/UCall")
Data as of 2026-10-19T08:05:51.212177+00:00 · Report a problem