# ktr0731/evans

Evans: more expressive universal gRPC client

Repository: https://github.com/ktr0731/evans
Canonical: https://ross.abutalabs.com/products/evans
Language: Go
License: MIT
License Family: permissive
Topics: grpc, grpc-client, completion, cli, repl-mode, protocol-buffers, golang, rpc
Last push: 2023-12-26T08:27:59+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": 3335, "days_push": 981, "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 4492, forks 193 (observed 2026-08-28T04:08:51.362637+00:00)

## What it is
Evans is an expressive universal gRPC client written in Go, offering both an interactive REPL mode with powerful completion and a stateless CLI mode for scripting. It supports all four RPC types, gRPC-Web, and JSON-formatted output for UNIX-style pipelines.

## Use cases
- manually inspect and explore a gRPC api interactively
- call grpc endpoints from the command line
- test grpc services with streaming rpcs
- script grpc requests in ci pipelines
- pipe grpc responses through jq
- try a grpc api without writing a client

## When to choose
- you need an interactive REPL to explore an unfamiliar gRPC api
- you want scriptable, stateless gRPC calls that compose with unix tools
- you need to exercise streaming or gRPC-Web endpoints during development

## When to avoid
- you need automated gRPC load or contract testing in CI rather than manual calls
- you prefer a GUI client like Postman or BloomRPC
- your api uses non-protobuf IDLs

## Facets
- artifact type: cli-tool
- maturity: maintenance
- function: rpc, http-client, cli, testing
- domain: developer-tools, apis, testing
- platform: cli, go, cross-platform, windows
- tags: grpc-client, repl, protocol-buffers, grpc-web, api-inspection, command-line, macos, linux, docker

## Member repositories
- ktr0731/evans (main) score 23

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:08:51.362637+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 2026-08-29T18:20:28.151231+00:00, confidence not recorded.
  - readme: https://github.com/ktr0731/evans (fetched 2026-08-28T04:08:51.362637+00:00, sha a4ae871ac9c1)
- Data as of 2026-08-30T08:39:29.467469+00:00.