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32 lines
1015 B
Python
32 lines
1015 B
Python
"""Extract plain text from an MCP tool result.
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Mirrors `toolText.ts` / `tool_text.rs` so all SDKs flatten tool results the same
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way: concatenate the ``text`` of every ``{"type": "text", "text": ...}`` content
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block. Non-text blocks are ignored; a bare string result is returned as-is.
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"""
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from __future__ import annotations
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from typing import Any
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def tool_result_to_text(result: Any) -> str:
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"""Flatten an MCP tool result into a single text string."""
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if result is None:
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return ""
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if isinstance(result, str):
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return result
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if isinstance(result, dict):
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content = result.get("content")
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if isinstance(content, list):
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parts = []
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for block in content:
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if (
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isinstance(block, dict)
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and block.get("type") == "text"
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and isinstance(block.get("text"), str)
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):
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parts.append(block["text"])
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return "".join(parts)
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return ""
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