outreach-composer is a skill in anthropics/knowledge-work-plugins, last changed 15 Sept 2026. It can run shell commands, reach the network and pre-approve tools — read the findings before installing.

From the author
Writes prospect outreach and follow-up sequences that sound like the owner wrote them, not like an AI did. Learns a voice profile from the owner's own sent mail, grounds every message in something specific about that prospect, builds the follow-up sequence behind it, queues every send for approval, and logs each touch to the CRM. Runs draft-only when no mail connector is available, so the copy can be pasted anywhere. Use this whenever the owner needs to reach out to prospects or customers — including phrasings like "write this cold email," "draft a follow-up," "reach out to these leads," "what do I say to them," "I need a sequence for this list," "nudge the people who didn't reply," or "write it but don't make it sound like a robot." Reach for it whenever outreach copy is the deliverable, even for a single message.

At a glance

What it can touch

How much a skill can do, not whether it is risky.

Pattern check

1 item to review

Broad tools pre-approved in allowed-tools

R34 · High · SKILL.md:15

Commit 2574e29 · 1 Nov 2026

How the check works

Pattern check:1 item to reviewSee it

Install

Each tab says whether it installs commit 2574e29, the one we checked, or the latest version.

Read this before installing: Broad tools pre-approved in allowed-tools — SKILL.md:15

Read SKILL.md first
Apache 2.0
Licence
34.4k
Repo stars
Publisher
Files

What it can touch

From the files and frontmatter at commit 2574e29. This is how much a skill can do, not whether it is risky.

  • Runs shell commands

    Its instructions or files give the agent commands to run on your computer.

  • Reaches the network

    It sends or fetches data over the internet, for example with curl, an HTTP library or a package install.

  • Pre-approves tools

    Its allowed-tools field lists tools the agent may use without asking you first, in agents that honour it.

    SKILL.md:15 (opens in a new tab)

Pattern check

Pattern check: 1 item to review · commit 2574e29 · 1 Nov 2026

We checked every text file in this skill, at commit 2574e29 on 1 Nov 2026, against 45 published patterns such as download-and-run commands, hidden text and credential access. We don't run the skill, we don't read the web pages it points to, and we can't judge everything its instructions might lead an agent to do. In published tests, pattern checks like this one missed most malicious skills. Read the skill before you install it — especially anything it asks you to download or run.

How the check worksReport an incorrect finding

Format check

Each agent reads SKILL.md a little differently. We check the file against each one's published rules; we don't run the skill in any agent.

  • Agent Skills specPasses with warnings

    The open format from agentskills.io, held to what the strictest agents enforce, so one folder loads everywhere.

    • Warning

      Paths that may not work once the skill is installed: line 26: ../../shared/voice-profile.md (outside the skill folder) and line 136: ../../shared/voice-profile.md (outside the skill folder). B6

      Fix: Use forward-slash paths relative to SKILL.md, and copy shared files into the skill.

    • Note

      There is no license field, so readers can't tell whether they may reuse the skill. O2

      Fix: Add license: with an SPDX name such as MIT or Apache-2.0, or the name of a bundled licence file.

    • Note

      Reference files over 100 lines with no table of contents at the top: reference/gotchas.md (214 lines), reference/output_template.md (148 lines) and reference/slop_test.md (165 lines). B5

      Fix: Add a short list of the sections at the top of each.

  • Claude CodePasses with warnings

    Claude Code reads its own extra fields, ignores unknown ones, and still loads a skill whose frontmatter is broken, without its fields.

    • Warning

      Paths that may not work once the skill is installed: line 26: ../../shared/voice-profile.md (outside the skill folder) and line 136: ../../shared/voice-profile.md (outside the skill folder). B6

      Fix: Use forward-slash paths relative to SKILL.md, and copy shared files into the skill.

    • Note

      Reference files over 100 lines with no table of contents at the top: reference/gotchas.md (214 lines), reference/output_template.md (148 lines) and reference/slop_test.md (165 lines). B5

      Fix: Add a short list of the sections at the top of each.

  • Claude apps & API uploadPasses with warnings

    Uploading to claude.ai or the Claude API, or packaging with Anthropic's script, accepts only the six spec fields and stops on anything else.

    • Warning

      Paths that may not work once the skill is installed: line 26: ../../shared/voice-profile.md (outside the skill folder) and line 136: ../../shared/voice-profile.md (outside the skill folder). B6

      Fix: Use forward-slash paths relative to SKILL.md, and copy shared files into the skill.

    • Note

      The description is 826 characters. The claude.ai Help Center says 200 at most, though Anthropic's API docs and validator allow 1,024. D4

      Fix: If the claude.ai upload refuses it, trim the description to 200 characters.

    • Note

      Reference files over 100 lines with no table of contents at the top: reference/gotchas.md (214 lines), reference/output_template.md (148 lines) and reference/slop_test.md (165 lines). B5

      Fix: Add a short list of the sections at the top of each.

  • OpenAI (Codex & API)Passes with warnings

    Codex finds SKILL.md by its exact name and needs a description; OpenAI's Skills API checks the frontmatter against the spec and caps uploads.

    • Warning

      Paths that may not work once the skill is installed: line 26: ../../shared/voice-profile.md (outside the skill folder) and line 136: ../../shared/voice-profile.md (outside the skill folder). B6

      Fix: Use forward-slash paths relative to SKILL.md, and copy shared files into the skill.

  • VS Code & CopilotPasses with warnings

    VS Code reads skills one folder below .github/skills, .claude/skills or .agents/skills and falls back to the folder name when the name is missing or differs; GitHub's Copilot docs require the exact name SKILL.md.

    • Warning

      Paths that may not work once the skill is installed: line 26: ../../shared/voice-profile.md (outside the skill folder) and line 136: ../../shared/voice-profile.md (outside the skill folder). B6

      Fix: Use forward-slash paths relative to SKILL.md, and copy shared files into the skill.

SKILL.md

Files

More from anthropics/knowledge-work-plugins

SkillWhat it can touchPattern checkLicenceUpdated
  • Instructions only
Pattern check: Nothing flaggedApache 2.013 Mar 2026
  • Instructions only
Pattern check: Nothing flaggedApache 2.021 Oct 2026
  • Instructions only
Pattern check: Nothing flaggedApache 2.021 Oct 2026
  • Instructions only
Pattern check: Nothing flaggedApache 2.021 Oct 2026
  • Instructions only
Pattern check: Nothing flaggedApache 2.023 Feb 2026
  • Instructions only
Pattern check: Nothing flaggedApache 2.021 Oct 2026
All skills in anthropics/knowledge-work-plugins

Other Marketing & growth skills

Same category, most repo stars first.

SkillWhat it can touchPattern checkLicenceUpdated
  • Instructions only
Pattern check: Nothing flaggedMIT27 Sept 2026
  • Instructions only
Pattern check: Nothing flaggedMIT27 Sept 2026
  • Names web addresses
Pattern check: Nothing flaggedApache 2.020 Apr 2026
  • Reaches the network
Pattern check: Nothing flaggedMIT13 Oct 2026
  • Runs shell commands
  • Names web addresses
Pattern check: Nothing flaggedApache 2.030 Jun 2026
  • Runs shell commands
  • Names web addresses
Pattern check: Nothing flaggedApache 2.018 Aug 2026