mesa / mesa/mesa-llm

bug: no validation of JSON object returned by LLM models

Open
#173 3 comments 0 reactions 0 assignees View on GitHub

Nobody has claimed this yet.

Dominant language
Python
Stars
73
Forks
89
Avg merge
14d 58m
Merged PRs (30d)
2

Description

## Describe the bug

There are two files where json object is parsed from the model response with exception handling. These are the two files.

`react.py` ->

https://github.com/mesa/mesa-llm/blob/a719dac14e3f314a29cf8758114ba349e99fbb29/mesa_llm/reasoning/react.py#L97

https://github.com/mesa/mesa-llm/blob/a719dac14e3f314a29cf8758114ba349e99fbb29/mesa_llm/reasoning/react.py#L148

`episodic_memory.py` ->

https://github.com/mesa/mesa-llm/blob/a719dac14e3f314a29cf8758114ba349e99fbb29/mesa_llm/memory/episodic_memory.py#L155

https://github.com/mesa/mesa-llm/blob/a719dac14e3f314a29cf8758114ba349e99fbb29/mesa_llm/memory/episodic_memory.py#L170

This may throw errors when the returned response is not a json object or corrupted.

## Fix

Add try-except block around the parser.

## PR

I'll open a PR and link this issue.

Contributor guide

Open the contributing guide

First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start with the four parser locations linked in mesa_llm/reasoning/react.py and mesa_llm/memory/episodic_memory.py. Reproduce responses that are corrupted or not JSON objects, then verify the affected paths handle those responses without uncaught parsing errors. Done means all four model-response parsing sites have the requested exception handling.

Written by the indexing model from the issue text.

Assessment

Tech stack
python
Domain
ai
Issue type
Bug
Difficulty
3/5
Estimated time
1-2 days
Activity status
Stale
Clarity
Clearly specified
Newbie friendliness
48/100

Get new issues in your inbox

A short digest of beginner-friendly GitHub issues.