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hey

basecamp/hey-cliSkill

Interact with HEY via the HEY CLI. Read and send emails, manage contacts,

ScannedSkillSource: GitHub

414 stars +2 this week Updated 16d ago License MIT Context ≈19 tokens always loaded

75popular

Why this score

Stars

18/35

Usage (forks)

7/15

Upkeep

25/25

License

15/15

Owner history

10/10

Popularity score: 75/100 from public GitHub signals only. It shows how widely used and maintained this is, not how well it works. Not included yet: the fake-star check. The security scan is shown separately and doesn't change the score. How we rank

Security

Scanned Oct 20, 2026 at commit 1596c5bda583, with Cisco's open-source skill-scanner.

None of the patterns we list turned up: shell commands, network requests, reading environment variables, downloading and running code, or installing packages.

A scan lists patterns in the code. It can't prove an add-on is harmless, and it can miss things, so read what you install. How we scan

Alternatives

Nothing from another maker does quite the same job yet.

Install

mkdir -p .claude/skills/hey

curl -sL https://codeload.github.com/basecamp/hey-cli/tar.gz/1596c5bda58363b65e169793597a1bc9ac19231b | tar -xz -C .claude/skills/hey --strip-components=3 "hey-cli-1596c5bda58363b65e169793597a1bc9ac19231b/skills/hey"

To remove it later:

rm -rf .claude/skills/hey

npx skills add basecamp/hey-cli --skill hey

Pinned to commit 1596c5bda583 as listed by GitHub.

Context cost: ≈19 tokens loaded every session (name and description), plus ≈3.8k tokens when the skill is used.

The Claude Code command downloads this skill folder at the pinned commit into .claude/skills/. The Skills CLI (npx skills) works with many agents but can't pin a version, so it installs whatever is current.

Facts

Repo: basecamp/hey-cli
Stars: 414
Forks: 53
Last push: 2026-10-19 (16d ago)
License: MIT
Owner: basecamp · since 2008
Language: Go
Works with: Claude Code, Skills CLI