← Skills

build-agent

Turns a task the owner keeps doing by hand into a named, reusable skill they can trigger by name or put on a schedule. Watches them do it once or listens to them describe it, works out what varies and what stays fixed, writes the skill with approval checkpoints in the right places, registers it with the router, and shares it with the team. This is how a business gets a workflow nobody shipped for them. Use this whenever the owner describes something repetitive they wish were automatic — including phrasings like "I do this every week," "can you remember how to do this," "make this a thing I can just ask for," "build me an agent," "automate this for me," "turn this into a workflow," or "I want this to happen every Monday." Reach for it when they describe a routine, even without asking for automation.

Agent Skill from anthropics/knowledge-work-plugins

Copilot Studio

Passes documented load rules

No documented load rule failed.

Microsoft 365 Copilot Preview, Frontier tenants only

Passes documented load rules

No documented load rule failed.

An agent can have at most 8 skills. Custom skills aren't available in tenants that use Microsoft Purview Information Barriers.

Agent Skills spec notes
Compatible isn't the same as safe. These verdicts only say whether a skill's files follow Microsoft's documented load rules. The checker reads files and never runs them, and it doesn't review what a skill or its scripts actually do. Read a skill's instructions and scripts before you add it to an agent.

Standards signals

Meets the agentskills.io required fields.

FrontmatterPresent and parsed
Spec: frontmatter
nameMeets the spec (1-64 chars, a-z 0-9 hyphens)
Spec: name
descriptionPresent, 1-1,024 characters
Spec: description
compatibilityAbsent or under 500 characters
Spec: compatibility
Name matches folderYes (build-agent)
Spec: name
allowed-toolsUsed Note: experimental in the spec; support varies by agent.
Spec: allowed-tools

Observed from the public SKILL.md at the commit above on 2026-10-24. Not a certification: AAIF and the Agent Skills project don't certify skills. Validate your own skill with skills-ref validate.

Source repoanthropics/knowledge-work-plugins
Pathsmall-business/skills/build-agent/SKILL.md
Commit checked33d3dea41a34
Repo licenseApache-2.0
Files4
ScriptsNone
Instructions5,627 characters
Deepest folder1 below the skill folder
Rules version2026-10-22

Re-check the latest version How skill checks work

Is this wrong or out of date? Email us. Skills data built 2026-10-24; rules as of 2026-10-22.

Rule-based checks of public files against Microsoft's documented load rules, not tested in Copilot Studio or Microsoft 365 Copilot. Independent project, not affiliated with Microsoft.