About retrieval-lens
retrieval-lens is an MCP server published by Vbj1808 in the RAG category: a black-box flight recorder for RAG retrieval inside MCP agents. Logs what chunks the model saw, scores, sources, and rankings - so you can audit, replay, and diff retrieval runs after the fact.
The repository has 2 stars and 0 forks, with the last commit 4 months ago. Recent commit activity is the strongest signal that reported issues will get attention.
Install
git clone https://github.com/Vbj1808/retrieval-lensThis server has no ConduID identity, so agent calls to it are not receipted. Pin the version you install and review the source before granting it credentials.
Tools (4)
retrieval_diffCompare two retrieval runs — what changed, what score drifted
Parameters not published.
retrieval_observeLog a retrieval run — query, chunks, scores, sources, rankings
Parameters not published.
retrieval_queryReplay what the model saw before a specific answer
Parameters not published.
retrieval_statsAggregate score distributions, top sources, runs over time
Parameters not published.
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