Versions-LE
Find where one dependency is constrained differently across a repository's manifests
No editor in the loop? npx -y versions-le-mcp runs the same engine as an MCP server, so an agent can call compare_versions with nothing else installed, and cargo install versions-le puts the same check in a terminal. Every way to install it.
Overview
What Versions-LE does
The build broke because one crate asks for serde 1.0.200 and another asks for serde 2. Or it did not break, and will, because CI has been running on a toolchain below the minimum a manifest declares. Versions-LE reads the version constraints across package.json, Cargo.toml, pyproject.toml, go.mod and GitHub workflow files, then reports where the same dependency is constrained inconsistently. Two constraints no single version can satisfy is an error, decided by interval arithmetic rather than string comparison; different but satisfiable is a warning; a floating pin is information. Comparison never crosses an ecosystem, and a grammar it does not model is named in the report rather than approximated into a range.
What people use it for
Fail before CI does
A pair of constraints no single version satisfies is an error and a non-zero exit, so the build stops before the deploy does.
Catch CI below the floor
A workflow toolchain that has drifted under the minimum version a manifest declares is the failure nobody notices until a release.
Diff against a baseline
The report carries no timestamp, so two runs over an unchanged tree produce identical output and a review can diff them.
Palette
3 commands
Open the command palette and type the name. Nothing is bound to a shortcut by default — the editor's keymap is the user's, not ours.
versions-le.showPositions: Show the line each constraint is written on. On by default.
- Compare Versions
versions-le.compare - Open Settings
versions-le.openSettings - Help & Troubleshooting
versions-le.help
Install
Install Versions-LE
VS Code
ext install nolindnaidoo.versions-leOpen Quick Open (Cmd/Ctrl+P) and paste.
Cursor / Windsurf
cursor --install-extension nolindnaidoo.versions-leCursor, Windsurf, VSCodium and the other VS Code forks pull from Open VSX. The id is the same as on the Marketplace.
AI agents
npx -y versions-le-mcpRuns Versions-LE's engine as an MCP server, so an agent can call compare_versions with no editor involved. VS Code 1.101+ needs nothing — the extension registers it for you.
Channels
Where it ships
One engine, 5 places to get it. Copy the one for the editor you use.
MCP server
the same engine, callable by an agent with no editor in the loopnpx -y versions-le-mcp
Links
Where Versions-LE lives
- VS Code Marketplaceversions-le
- Open VSXfor Cursor, Windsurf and VSCodium
- npmversions-le-mcp
- GitHubsource, issues, changelog
- MCP registryio.github.nolindnaidoo/versions-le
The family
The other 16
String-LEExtract every string in a codebase, so a person can read them
Numbers-LEExtract every hardcoded number in a codebase, so a person can check them
Paths-LEExtract every file path in a codebase, and say whether it still points at anything
Colors-LEExtract every color in a codebase, and say which ones are not in your palette
URLs-LEExtract every URL in a codebase, with its protocol and exact position
Dates-LEExtract every date and timestamp, and the exact instant each one resolves to
Units-LEExtract every quantity with its unit, normalized, and refuse the ambiguous ones by name
IDs-LEExtract every UUID, ULID, NanoID, ObjectId and Snowflake, and decode the time inside
IPs-LEExtract every IP address, CIDR block and MAC, normalized and classified by scope
Regex-LEFind every regex in a codebase, and report which can be driven into catastrophic backtracking
Scrape-LECheck whether a page is scrapeable before the scraper is written, and say when it cannot tell
i18n-LEIdentify the i18n library a project uses, then audit its catalogs by that library's rules
DecisionLintLint Jev and Luna questions before they are sent: the questions you write for TypeSafe's Jev, OpenAI's Decisions API (gpt-6-luna) or any platform that serves one, as you type, with no API key and no network calls. An optional command asks the model itself to check a file
Secrets-LEFind hardcoded credentials in a codebase, and never print one into the report
EnvSync-LECompare the dotenv files in a tree, and say which keys are missing from which
Unicode-LEFind the Unicode that hides meaning — bidi controls, invisibles, homoglyphs, mixed scripts