{"record":{"id":"a9af7b8213128b29","repo":"langchain-ai/deepagents","slug":"source-display-path-path-malformed-tools-j","errorCode":null,"errorMessage":"{source}: {_display_path(path)}: malformed tools.json: {exc.msg}","messagePattern":"(.+?): (.+?): malformed tools\\.json: (.+?)","errorType":"error_code","errorClass":"FleetImportError","httpStatus":null,"severity":"error","filePath":"libs/talon/deepagents_talon/fleet_import.py","lineNumber":355,"sourceCode":"    paths: list[tuple[Path, str]] = []\n    root = staging / \"tools.json\"\n    if root.is_file():\n        paths.append((root, \"root\"))\n    agents = staging / \"agents\"\n    if agents.is_dir():\n        for child in sorted(agents.iterdir(), key=lambda item: item.name):\n            path = child / \"tools.json\"\n            if path.is_file():\n                paths.append((path, child.name))\n    return paths\n\n\ndef _load_tool_requests(path: Path, scope: str, source: Path) -> list[_ToolRequest]:\n    try:\n        data = json.loads(path.read_text(encoding=\"utf-8\"))\n    except json.JSONDecodeError as exc:\n        msg = f\"{source}: {_display_path(path)}: malformed tools.json: {exc.msg}\"\n        raise FleetImportError(msg) from exc\n    except OSError as exc:\n        msg = f\"{source}: {_display_path(path)}: {exc}\"\n        raise FleetImportError(msg) from exc\n    if not isinstance(data, dict):\n        msg = f\"{source}: {_display_path(path)}: malformed tools.json: expected object\"\n        raise FleetImportError(msg)\n\n    raw_tools = data.get(\"tools\")\n    if not isinstance(raw_tools, list):\n        msg = f\"{source}: {_display_path(path)}: malformed tools.json: expected tools list\"\n        raise FleetImportError(msg)\n    interrupt_config = data.get(\"interrupt_config\")\n    interrupts = interrupt_config if isinstance(interrupt_config, dict) else {}\n\n    requests: list[_ToolRequest] = []\n    for index, item in enumerate(raw_tools):\n        if not isinstance(item, dict):\n            msg = f\"{source}: {_display_path(path)}: tools[{index}] must be an object\"","sourceCodeStart":337,"sourceCodeEnd":373,"githubUrl":"https://github.com/langchain-ai/deepagents/blob/a1af029e6e73cb17c36bff823d227747b28e91e1/libs/talon/deepagents_talon/fleet_import.py#L337-L373","documentation":"A `tools.json` in the import (root or per-agent) is not valid JSON. The library parses it to compute MCP server requirements; a syntax error aborts the import, and the underlying `JSONDecodeError.msg` is surfaced with the archive and file path for diagnosis.","triggerScenarios":"`import_fleet_zip` → `_mcp_summaries` → `_load_tool_requests` runs `json.loads` on a staged `tools.json` and gets `json.JSONDecodeError`.","commonSituations":"Hand-edited tools.json with trailing commas or comments, single quotes instead of double quotes, BOM at file start, truncated file from a bad export, or template placeholders left unrendered.","solutions":["Validate the tools.json locally before zipping: `python -m json.tool tools.json` and fix the reported syntax issue (the message includes the exact `exc.msg`)","Remove JSON-unfriendly constructs (comments, trailing commas); strip any UTF-8 BOM (`encoding=\"utf-8-sig\"` source or re-save as plain UTF-8)","Re-export the fleet if the file was corrupted in transit"],"exampleFix":"// before\n{ 'tools': [], }  // single quotes, trailing comma\n// after\n{\"tools\": []}","handlingStrategy":"validation","validationCode":"import json\n\ndef validate_tools_json(text):\n    try:\n        json.loads(text)\n    except json.JSONDecodeError as exc:\n        raise ValueError(f\"tools.json invalid: {exc.msg} (line {exc.lineno}, col {exc.colno})\") from exc","typeGuard":"def is_valid_json(text: str) -> bool:\n    try:\n        json.loads(text)\n        return True\n    except json.JSONDecodeError:\n        return False","tryCatchPattern":"try:\n    import_fleet_zip(zip_path, target_dir=target)\nexcept FleetImportError as exc:\n    if \"malformed tools.json\" in str(exc):\n        print(f\"Fix JSON syntax in tools.json: {exc}\")\n    raise","preventionTips":["Run `python -m json.tool tools.json` before zipping","Never hand-edit JSON without re-validating","Save files as plain UTF-8 without BOM","Generate tools.json programmatically (json.dump) instead of string templates"],"tags":["json","validation","config","zip"],"backgroundTag":"malformed-json-config","analyzedSha":"a1af029e6e73cb17c36bff823d227747b28e91e1","analyzedAt":"2026-08-29T11:43:24.718Z","schemaVersion":2},"datasetVersion":"2026-08-29T12:17:43.993Z"}