# kisielk/errcheck

errcheck checks that you checked errors.

Repository: https://github.com/kisielk/errcheck
Canonical: https://ross.abutalabs.com/products/errcheck
Language: Go
License: MIT
License Family: permissive
Topics: go, errcheck, error, linter
Last push: 2026-05-12T20:50:18+00:00

## Health v2 (maintenance only)
Score: 78/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 82, release rhythm 59, longevity 100
- inputs: {"age_days": 4938, "days_push": 113, "days_rel": 113, "gap_med": 125, "n_releases_24m": 4}
- flags: none
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 2528, forks 147 (observed 2026-08-28T04:06:58.694354+00:00)

## What it is
errcheck is a static analysis tool for Go that finds silently ignored error return values. It can be run as a CLI or integrated via the go/analysis API.

## Use cases
- find unchecked errors in go code
- lint go projects for ignored error returns
- enforce error handling in ci
- detect blank identifier error assignments
- check ignored type assertions in go

## When to choose
- you want a focused, fast tool specifically for unchecked errors in Go
- you need go/analysis integration for custom tooling
- you want configurable exclusions for known-safe functions

## When to avoid
- you need deeper analysis of assigned-but-unused errors (use staticcheck)
- you are not working in Go

## Facets
- artifact type: cli-tool
- maturity: active
- function: linter, error-handling, static-site-generator
- domain: developer-tools, testing, programming-languages
- platform: go, cli, cross-platform
- tags: go-linter, static-analysis, error-checking, code-quality

## Member repositories
- kisielk/errcheck (main) score 78

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:06:58.694354+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 2026-08-30T02:25:23.356351+00:00, confidence not recorded.
  - readme: https://github.com/kisielk/errcheck (fetched 2026-08-28T04:06:58.694354+00:00, sha e9440533ae86)
- Data as of 2026-08-30T08:39:29.467469+00:00.