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60 lines
2.0 KiB
Python
60 lines
2.0 KiB
Python
"""Progressive-disclosure primitive: return a skill's procedure body by name.
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The AgenticRetriever loads only Skill descriptions into the system prompt; the
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full procedure is retrieved by the LLM calling this tool when it decides a
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skill is relevant. Active skills for the current turn live in a ContextVar so
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the handler does not need another graph round-trip.
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"""
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from typing import Any, Dict
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from cognee.modules.engine.models import Tool
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from cognee.modules.tools.context import active_skills_var, opened_skills_var
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from cognee.modules.tools.errors import ToolInvocationError
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from cognee.modules.tools.registry import register_builtin_tool
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MAX_SKILL_BODY_CHARS = 12_000
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TOOL = Tool(
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name="load_skill",
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description=(
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"Load the full procedure body of a named skill. Use this when the skill "
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"description suggests the skill applies to the current task."
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),
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input_schema={
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"type": "object",
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"properties": {"name": {"type": "string", "description": "Name of the skill to load."}},
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"required": ["name"],
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},
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handler_ref="cognee.modules.tools.builtin.load_skill.handler",
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permission_required="read",
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readonly_hint=True,
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)
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async def handler(args: Dict[str, Any], **_) -> str:
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name = args.get("name")
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if not name:
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raise ToolInvocationError("load_skill requires a 'name' argument")
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skills = active_skills_var.get()
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skill = skills.get(name)
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if skill is None:
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available = ", ".join(sorted(skills)) or "(none in scope)"
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raise ToolInvocationError(
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f"Skill {name!r} is not in the active skill set. Available: {available}"
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)
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opened = opened_skills_var.get()
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if opened is not None:
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opened.add(skill.name)
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body = skill.procedure or "(this skill has no procedure body)"
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if len(body) > MAX_SKILL_BODY_CHARS:
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body = body[:MAX_SKILL_BODY_CHARS] + "\n... [truncated]"
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return f"# Skill: {skill.name}\n{body}"
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register_builtin_tool(TOOL)
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