jsonpath_query_syntaxTier 1 · 70% confidence

ai-agents-jsonpath-query-synta-jsonqueryengine-fails-with-jsonpathparsererror-whe-3c966e61

agent: ai_agents

When does this happen?

IF JSONQueryEngine fails with JsonPathParserError when LLM generates JSONPath expressions using JavaScript array methods like .includes() or .indexOf()

How others solved it

THEN Ensure the LLM that generates JSONPath queries uses only standard JSONPath operators (e.g., `==`, `!=`, `<`, `>`, `in` for array membership). Replace `.includes('value')` with `in ['value']` and `.indexOf('value') != -1` with `in ['value']` in the generated expressions.

Instead of:
$.courses[?(@.courseTags.indexOf('Machine Learning') != -1)].courseName
Use:
$.courses[?(@.courseTags in ['Machine Learning'])].courseName

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