Patchloom is a single-binary CLI that gives AI coding agents safe, structured file editing: search and replace, unified diffs, parser-backed JSON/YAML/TOML document ops, markdown section editing, AST-aware renames, multi-file transactions, undo, and an MCP server for tool calls.
What's new in 0.37.3
Patchloom 0.37.3 YAML is parsed without the archived unsafe-libyaml crate. Edits to ini files, markdown lists, and document moves keep the surrounding text instead of rewriting or deleting it. Highlights Unquoted yes, no, on, and off in YAML stay strings. doc set on an ini line keeps the spaces around = and a spaced ; or # note. md upsert-bullet puts the new item in that heading's list, before a nested heading. doc move refuses to replace a key that already has a value, and [0], 0, and 00 name the same array slot. Bug fixes - YAML was parsed with the archived unsafe-libyaml crate. Parsing now uses noyalib. Unquoted yes, no, on, and off stay strings. A document doc set still appends a trailing newline when the serializer omits one (#2668). - doc set on port = 8080 ; primary rewrote the line as port=9090. The spaces around = disappeared and the note was deleted. The edited line now keeps that spacing and the note. A new value that would be read back shorter, because a space before ; or # starts a comment, is invalid_input and the file stays unchanged. 8080;primary and foo#bar stay part of the value (#2673). - replace told every refused file to pass --allow-absent-old. A file that simply did not contain the pattern printed that hint. The hint is now only for exact_old_absent, when a fuzzy candidate was found and not written. A plain miss prints refused PATH: no_matches (#2674). - md upsert-bullet placed the new item after a nested section. Adding - beta under # List wrote it after the body of ## Other, so it read as part of that section. The new item stays with the heading's own list, before the first child heading. A bullet that exists only under the child is not treated as already present. A second upsert of the same item does not add it again (#2675). - doc move onto a key that already had a value replaced that value. Moving server.http onto server.host exited 0 and replaced localhost with 8080. The command now returns already_exists and leaves the file unchanged. Moving a field into an earlier array slot no longer clears the sibling that slid into the old index (#2676). - doc move treated [0], 0, and 00 as different array slots. Moving items[0].child to items.0.child.nested deleted the value and exited 0. The same destination written as items[0].child.nested was already refused. rows[0][0] to rows.0[2] wrote the values in the wrong order, and rows[0][0] to rows.0[1] left the array unchanged. …
Yes. Patchloom is free and open-source software released under the MIT license.
What is the latest version of Patchloom?
The latest version is 0.37.3, released on Oct 16, 2026.
Is it safe to download Patchloom?
The download button links to the official installer published on github.com, the same file Windows Package Manager installs. You can verify the downloaded file by comparing its SHA-256 checksum with 5361ffd69d795f1d344f9a9ea50e0ff34f52b06e0aa872cdc663c8c42c581d1c.
Which Windows versions does Patchloom support?
Patchloom runs on Windows and is available for 64-bit (x64), ARM64 systems.
How do I uninstall Patchloom?
Open Settings › Apps › Installed apps, find Patchloom and select Uninstall. From the command line, run winget uninstall --id=Patchloom.Patchloom -e.
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