implement skills

Author: mythz

llms/extensions/skills/LICENSE

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llms/extensions/skills/__init__.py

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+import os
+import shutil
+from pathlib import Path
+from typing import Annotated
+
+import aiohttp
+
+from .parser import read_properties
+
+g_skills = {}
+
+
+def sanitize(name: str) -> str:
+    return name.replace(" ", "").replace("_", "").replace("-", "").lower()
+
+
+def skill(name: Annotated[str, "skill name"], file: Annotated[str | None, "skill file"] = None):
+    """Get the content of a skill or a specific file within a skill."""
+    skill = g_skills.get(name)
+
+    if not skill:
+        sanitized_name = sanitize(name)
+        for k, v in g_skills.items():
+            if sanitize(k) == sanitized_name:
+                skill = v
+                break
+
+    if not skill:
+        return f"Error: Skill {name} not found. Available skills: {', '.join(g_skills.keys())}"
+    location = skill.get("location")
+    if not location or not os.path.exists(location):
+        return f"Error: Skill {name} not found at location {location}"
+
+    if file:
+        if file.startswith(location):
+            file = file[len(location) + 1 :]
+        if not os.path.exists(os.path.join(location, file)):
+            return f"Error: File {file} not found in skill {name}. Available files: {', '.join(skill.get('files', []))}"
+        with open(os.path.join(location, file)) as f:
+            return f.read()
+
+    with open(os.path.join(location, "SKILL.md")) as f:
+        content = f.read()
+
+        files = skill.get("files")
+        if files and len(files) > 1:
+            content += "\n\n## Skill Files:\n```\n"
+            for file in files:
+                content += f"{file}\n"
+            content += "```\n"
+        return content
+
+
+def install(ctx):
+    global g_skills
+    home_skills = ctx.get_home_path(os.path.join(".agent", "skills"))
+    # if not folder exists
+    if not os.path.exists(home_skills):
+        os.makedirs(ctx.get_home_path(os.path.join(".agent")), exist_ok=True)
+        ctx.log(f"Creating initial skills folder: {home_skills}")
+        # os.makedirs(home_skills)
+        # copy ui/skills to home_skills
+        ui_skills = os.path.join(ctx.path, "ui", "skills")
+        shutil.copytree(ui_skills, home_skills)
+
+    skill_roots = {}
+
+    # add .claude skills first, so they can be overridden by .agent skills
+    if os.path.exists("~/.claude/skills"):
+        skill_roots["~/.claude/skills"] = "~/.claude/skills"
+
+    if os.path.exists(os.path.join(".claude", "skills")):
+        skill_roots[".claude/skills"] = os.path.join(".claude", "skills")
+
+    skill_roots["~/.llms/.agents"] = home_skills
+
+    if os.path.exists(os.path.join(".agent", "skills")):
+        skill_roots[".agents"] = os.path.join(".agent", "skills")
+
+    g_skills = {}
+    for group, root in skill_roots.items():
+        if not os.path.exists(root):
+            continue
+        try:
+            for entry in os.scandir(root):
+                if (
+                    entry.is_dir()
+                    and os.path.exists(os.path.join(entry.path, "SKILL.md"))
+                    or os.path.exists(os.path.join(entry.path, "skill.md"))
+                ):
+                    skill_dir = Path(entry.path).resolve()
+                    props = read_properties(skill_dir)
+
+                    # recursivly list all files in this directory
+                    files = []
+                    for file in skill_dir.glob("**/*"):
+                        if file.is_file():
+                            full_path = str(file)
+                            rel_path = full_path[len(str(skill_dir)) + 1 :]
+                            files.append(rel_path)
+
+                    skill_props = props.to_dict()
+                    skill_props.update(
+                        {
+                            "group": group,
+                            "location": str(skill_dir),
+                            "files": files,
+                        }
+                    )
+                    g_skills[props.name] = skill_props
+
+        except OSError:
+            pass
+
+    async def get_skills(request):
+        return aiohttp.web.json_response(g_skills)
+
+    ctx.add_get("", get_skills)
+
+    async def get_skill(request):
+        name = request.match_info.get("name")
+        file = request.query.get("file")
+        return aiohttp.web.Response(text=skill(name, file))
+
+    ctx.add_get("contents/{name}", get_skill)
+
+    ctx.register_tool(skill, group="core_tools")
+
+
+__install__ = install

llms/extensions/skills/errors.py

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+"""Skill-related exceptions."""
+
+
+class SkillError(Exception):
+    """Base exception for all skill-related errors."""
+
+    pass
+
+
+class ParseError(SkillError):
+    """Raised when SKILL.md parsing fails."""
+
+    pass
+
+
+class ValidationError(SkillError):
+    """Raised when skill properties are invalid.
+
+    Attributes:
+        errors: List of validation error messages (may contain just one)
+    """
+
+    def __init__(self, message: str, errors: list[str] | None = None):
+        super().__init__(message)
+        self.errors = errors if errors is not None else [message]