Skill frontmatter with compatibility and tool constraints
Use `skill.md` frontmatter to tell agents which environment assumptions matter and which tools are allowed before they start making things up.
Why this can grow a startup
Agents fail in boring ways when the instructions hide the runtime or the tool limits. A short frontmatter block fixes a lot of that early. Compatibility notes stop bad environment guesses. Tool constraints reduce the chance that the assistant reaches for a capability the workflow does not support. It is a small documentation move that prevents a lot of fake confidence.
Company example
Mintlify's custom `skill.md` format supports `compatibility`, `metadata`, and an experimental `allowed-tools` field in frontmatter so teams can publish capability notes and tool guardrails directly with the skill.
Source and metric
Source: Mintlify Docs · Browse Mintlify Docs tactics
Mintlify's frontmatter supports compatibility notes plus a space-delimited `allowed-tools` field
Source discovered: May 28, 2026
When to use it
Use this when AI Search, Documentation, Developer Experience is relevant to agent enablement, docs ops, tool guardrails and you can run a bounded test with a free budget.
When not to use it
Do not use it as a substitute for customer evidence, a clear owner, or a measurable stop condition. Local platform rules and market behavior still need checking.
Founder checklist
- Read Mintlify Docs and identify what is directly supported.
- Choose one channel context: AI Search, Documentation, Developer Experience.
- Define the test around Mintlify's frontmatter supports compatibility notes plus a space-delimited `allowed-tools` field.
- Set an owner, evidence window, and stop condition before launch.
Explore the context
Apply this with an operator
Turn isolated search tactics into a crawlable visibility system tied to demand and proof.