langchain-ai/openwiki

This issue exposes a critical flaw in OpenWiki's `read-tool` MIME type detection, leading to `INVALID_TOOL_RESULTS` errors with the Anthropic API. The reliance on extension-based mapping incorrectly classifies common text files (e.g., `Makefile`, `Dockerfile`) as `application/octet-stream`, causing them to be sent as base64 documents. This violates Anthropic's API schema, which expects `application/pdf` for documents, resulting in agent crashes. The problem is compounded by similar mishandling of actual binary files. This fundamental misclassification severely limits OpenWiki's ability to process typical codebases, directly impacting its reliability and utility for documentation generation. A robust, content-aware MIME detection strategy is imperative.