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Show HN: Selvedge – an append-only log of what your AI agent already rejected
Brief published August 8, 2026 · Original source published August 7, 2026
Original reporting by masondelan at github.com.
Automated brief. Verify important details at the original source.
What happened
Selvedge is an open-source MCP server released on GitHub and PyPI that maintains an append-only log of reasoning produced by AI coding agents. It records not just what changes were made but why alternatives were tried and rejected, storing that history in a local SQLite database. The tool is framed as long-term memory for AI-coded codebases, complementing line attribution tools by capturing the decision context behind each change.
Why it matters
AI coding agents currently leave no durable record of discarded approaches, so subsequent agent runs or human reviewers have no way to know what was already attempted. Selvedge aims to close that gap by persisting rejection reasoning locally, which could reduce redundant retries and help teams audit agent behavior over time.
What to watch
Adoption depends on how well Selvedge integrates with the MCP-compatible agents developers already use, whether the SQLite log format proves queryable enough for real workflows, and whether the project attracts community contributions to broaden agent compatibility.