# improbable-eng/grpc-web

gRPC Web implementation for Golang and TypeScript

Repository: https://github.com/improbable-eng/grpc-web
Canonical: https://ross.abutalabs.com/products/grpc-web
Language: TypeScript
License: Apache-2.0
License Family: permissive
Topics: grpc, grpc-web, browser, golang, typescript
Last push: 2023-09-23T08:13:21+00:00

## Health v2 (maintenance only)
Score: 23/100 (v2, computed 2026-09-02T17:46:02.011165+00:00)
- activity 0, release rhythm 8, longevity 100
- inputs: {"age_days": 3688, "days_push": 1075, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: none
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 4473, forks 445 (observed 2026-08-28T04:08:50.991732+00:00)

## What it is
A gRPC-Web implementation providing a Go wrapper/proxy to expose gRPC servers to browsers and a TypeScript client library for invoking gRPC services from modern web apps. It lets frontend code call strongly-typed protobuf-based RPC services without hand-crafted JSON APIs.

## Use cases
- call grpc services from the browser
- expose a grpc server to web frontend clients
- proxy classic grpc servers over grpc-web
- generate typed typescript clients from proto files
- replace hand-written  apis with typed rpc

## When to choose
- you have existing Go gRPC servers and want browser clients
- you want strongly-typed API contracts between frontend and backend
- you need a standalone proxy for non-Go gRPC servers

## When to avoid
- starting a new project - the official grpc/grpc-web client is recommended
- you need Node.js-only gRPC without browser support
- you need actively developed features or new bug fixes

## Facets
- artifact type: library
- maturity: maintenance
- function: rpc, http-server, middleware, serialization
- domain: web-development, frontend, backend, apis, developer-tools
- platform: browser, go
- tags: grpc-web, protocol-buffers, reverse-proxy, browser-client, microservices, nodejs, typescript, web-server

## Member repositories
- improbable-eng/grpc-web (main) score 23

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:08:50.991732+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 2026-08-29T18:20:35.892716+00:00, confidence not recorded.
  - readme: https://github.com/improbable-eng/grpc-web (fetched 2026-08-28T04:08:50.991732+00:00, sha 67f667743460)
- Data as of 2026-08-30T08:39:29.467469+00:00.