{"record":{"id":"79abe1a30380b426","repo":"Fosowl/agenticSeek","slug":"no-output-to-interpret","errorCode":null,"errorMessage":"No output to interpret.","messagePattern":"No output to interpret\\.","errorType":"validation","errorClass":"ValueError","httpStatus":null,"severity":"warning","filePath":"sources/tools/mcpFinder.py","lineNumber":109,"sourceCode":"                output += f\"Usage name: {mcp_infos['qualifiedName']}\\n\"\n                output += f\"Tools: {mcp_infos['tools']}\"\n                output += \"\\n-------\\n\"\n        return output.strip()\n\n    def execution_failure_check(self, output: str) -> bool:\n        output = output.strip().lower()\n        if not output:\n            return True\n        if \"error\" in output or \"not found\" in output:\n            return True\n        return False\n\n    def interpreter_feedback(self, output: str) -> str:\n        \"\"\"\n        Not really needed for this tool (use return of execute() directly)\n        \"\"\"\n        if not output:\n            raise ValueError(\"No output to interpret.\")\n        return f\"\"\"\n            The following MCPs were found:\n            {output}\n            \"\"\"\n\nif __name__ == \"__main__\":\n    api_key = os.getenv(\"MCP_FINDER\")\n    tool = MCP_finder(api_key)\n    result = tool.execute([\"\"\"\nstock\n\"\"\"], False)\n    print(result)\n","sourceCodeStart":91,"sourceCodeEnd":122,"githubUrl":"https://github.com/Fosowl/agenticSeek/blob/ae57a2357745a9706cb12d0fd76d954c84d166fa/sources/tools/mcpFinder.py#L91-L122","documentation":"McpFinder.interpreter_feedback is a formatting helper that turns raw MCP search output into a prompt block. It raises ValueError('No output to interpret.') when given an empty or falsy string, failing fast instead of emitting a meaningless 'The following MCPs were found:' block.","triggerScenarios":"Calling finder.interpreter_feedback(output) with output='' or output=None — typically when the preceding search/execute step returned nothing (no MCPs matched the query) and its result is piped straight into this method.","commonSituations":"Query with no matching MCP servers in the registry; network/API hiccup making execute() return empty; scripting that ignores the empty case before calling interpreter_feedback.","solutions":["Check the search output before calling: only invoke interpreter_feedback with a non-empty string","Handle the no-results case separately (user-facing 'no MCPs found' message)","If results should exist, debug the upstream execute()/search call for network or query issues"],"exampleFix":"// before\nresult = finder.execute(query)\nprint(finder.interpreter_feedback(result))\n// after\nresult = finder.execute(query)\nif result:\n    print(finder.interpreter_feedback(result))\nelse:\n    print('No MCPs found for:', query)","handlingStrategy":"validation","validationCode":"if not output or not isinstance(output, str):\n    return 'No MCPs found for this query.'\nformatted = finder.interpreter_feedback(output)","typeGuard":"def has_mcp_output(output) -> bool:\n    return isinstance(output, str) and len(output.strip()) > 0","tryCatchPattern":"try:\n    prompt = finder.interpreter_feedback(result)\nexcept ValueError:\n    prompt = 'No MCPs were found for the given query.'","preventionTips":["Check execute()/search results for emptiness before formatting","Treat 'no results' as a distinct, user-facing case","Wrap upstream network calls so failures never surface as empty strings","Log the original query when results come back empty to aid debugging"],"tags":["empty-input","valueerror","mcp","input-validation"],"backgroundTag":"empty-input-validation","analyzedSha":"ae57a2357745a9706cb12d0fd76d954c84d166fa","analyzedAt":"2026-08-30T02:49:05.834Z","schemaVersion":2},"datasetVersion":"2026-08-30T03:17:51.788Z"}