feat: agent skills

[uinstinct]

Description

This PR introduces agent skills to the vscode/jetbrains extension.

References:
About agent skill: https://platform.claude.com/docs/en/agents-and-tools/agent-skills/overview
Integrating agent skill: https://github.com/agentskills/agentskills/blob/main/docs/integrate-skills.mdx

resolves CON-5136

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Checklist

• [] I've read the contributing guide
• [] The relevant docs, if any, have been updated or created
• [] The relevant tests, if any, have been updated or created

Screen recording or screenshot

Tests

[ What tests were added or updated to ensure the changes work as expected? ]

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Summary by cubic

Adds agent skills to the VS Code/JetBrains extension so the model can discover project-specific skills and read detailed instructions via a new tool.

• New Features

  • Load skills from SKILL.md files in .continue/ (workspace and global).
  • Parse YAML frontmatter + markdown content.
  • New read_skill built-in tool to fetch a skill by name; returns a friendly error if not found.

• Migration

  • Add .continue//SKILL.md with YAML frontmatter (name, description, optional license) and instructions in the body.
  • Reload Continue to pick up skills.

^{Written for commit e0753f5. Summary will update on new commits.}

[continue]

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[cubic-dev-ai]

4 issues found across 17 files

Prompt for AI agents (all issues)

Check if these issues are valid — if so, understand the root cause of each and fix them.


<file name="core/config/markdown/loadMarkdownSkills.ts">

<violation number="1" location="core/config/markdown/loadMarkdownSkills.ts:48">
P2: Magic number `slice(7)` is unclear and fragile. This appears to strip the `file://` URI scheme prefix, but should use a named constant or proper URI parsing utility for clarity and safety. Consider extracting this to a helper function or adding a comment explaining the intent.</violation>
</file>

<file name="core/llm/skills.ts">

<violation number="1" location="core/llm/skills.ts:20">
P2: Remove debug `console.log` statement before merging. The `debug1` prefix indicates this is temporary debugging code that should not be in production.</violation>
</file>

<file name="gui/src/redux/util/constructMessages.ts">

<violation number="1" location="gui/src/redux/util/constructMessages.ts:218">
P0: Critical bug: `systemMessageWithSkills` is computed but never used. `finalSystemMessage` is assigned `systemMessageWithRules` instead of `systemMessageWithSkills`, causing the skills feature to have no effect.</violation>

<violation number="2" location="gui/src/redux/util/constructMessages.ts:220">
P0: Same bug: should use `systemMessageWithSkills` instead of `systemMessageWithRules` to include skills when appending conversation summary.</violation>
</file>

_{Reply to cubic to teach it or ask questions. Tag @cubic-dev-ai to re-run a review.}

[continue]

I've created documentation for the agent skills feature in a separate branch: docs-agent-skills

The documentation includes:

• Overview page at docs/customize/skills.mdx
• Detailed guide at docs/customize/deep-dives/skills.mdx
• Updated navigation in docs/docs.json
• Updated reference at docs/reference.mdx

Since your PR is from a fork, I can't create a PR directly against your agent-skills branch. Here are the options:

1. Cherry-pick my commit into your branch:

   git fetch https://github.com/continuedev/continue docs-agent-skills
   git cherry-pick 684d362

2. Merge my branch into yours:

   git remote add continuedev-main https://github.com/continuedev/continue
   git fetch continuedev-main docs-agent-skills
   git merge continuedev-main/docs-agent-skills

3. I can create a separate PR against main that will merge after yours

Let me know which approach you prefer!

[cubic-dev-ai]

No issues found across 13 files