# rpclib/rpclib

rpclib is a modern C++ msgpack-RPC server and client library

Repository: https://github.com/rpclib/rpclib
Canonical: https://ross.abutalabs.com/products/rpclib
Homepage: http://rpclib.net
Language: C++
License: NOASSERTION
License Family: other
Topics: rpc, cpp14, cpp, cplusplus, cplusplus-14, msgpack
Last push: 2024-04-09T11:29:25+00:00

## Health v2 (maintenance only)
Score: 23/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 0, release rhythm 8, longevity 100
- inputs: {"age_days": 3936, "days_push": 876, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: no_license
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 1840, forks 399 (observed 2026-08-28T04:05:43.009258+00:00)

## What it is
rpclib is a modern C++14 msgpack-RPC library providing both client and server implementations with no IDL or code generation required. Functions are bound directly in C++ and can be called remotely from any language that speaks msgpack-rpc.

## Use cases
- expose C++ functions to be called over the network via RPC
- call functions in a remote C++ program from another language
- build a simple msgpack-rpc server without IDL or codegen
- communicate between a simulator and external clients like Microsoft AirSim does
- add remote procedure call support to a C++ application

## When to choose
- you need a lightweight, no-nonsense msgpack-RPC solution in C++
- you want to bind lambdas or free functions directly without learning an IDL
- you need interoperability with msgpack-rpc clients in other languages

## When to avoid
- you need JSON-RPC or async operations - consider packio instead
- you need a project with active maintenance - rpclib is looking for maintainers
- you need gRPC-style streaming, load balancing, or HTTP/2 transport

## Facets
- artifact type: library
- maturity: maintenance
- function: rpc, serialization, http-server
- domain: backend, microservices, developer-tools
- platform: cpp, cross-platform, windows
- tags: msgpack-rpc, cpp14, client-server, no-idl, inter-process-communication, linux, macos

## Member repositories
- rpclib/rpclib (main) score 23

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:05:43.009258+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-30T03:18:05.379689+00:00, confidence not recorded.
  - readme: https://github.com/rpclib/rpclib (fetched 2026-08-28T04:05:43.009258+00:00, sha 0adf94ec5780)
  - homepage: http://rpclib.net (fetched 2026-08-29T10:57:14.475220+00:00, sha 8002e90e5929)
- Data as of 2026-08-30T08:39:29.467469+00:00.