Latest Package Version Lookup
Query the deps.dev API to get the latest stable version of open source packages.
Supported Ecosystems Ecosystem System ID Example Package npm npm express, @types/node PyPI pypi requests, django Go go github.com/gin-gonic/gin Cargo cargo serde, tokio Maven maven org.springframework:spring-core NuGet nuget Newtonsoft.Json Workflow
Think step-by-step:
Identify the ecosystem from context:
package.json or node_modules → npm requirements.txt, pyproject.toml, setup.py → pypi go.mod, go.sum → go Cargo.toml → cargo pom.xml, build.gradle → maven *.csproj, packages.config → nuget If unclear, ask the user
Run the get-versions script:
SCRIPT=scripts/get-versions.py
python3 $SCRIPT
Report the results from the JSON output Script Usage
Single package:
python3 scripts/get-versions.py npm express
Multiple packages:
python3 scripts/get-versions.py npm express lodash @types/node
Different ecosystems:
python3 scripts/get-versions.py pypi requests django flask python3 scripts/get-versions.py go github.com/gin-gonic/gin python3 scripts/get-versions.py maven org.springframework:spring-core
Output Format
The script outputs JSON with the following structure:
{ "system": "npm", "packages": [ { "package": "express", "version": "5.0.0", "publishedAt": "2024-09-10T04:40:34Z", "isDeprecated": false }, { "package": "lodash", "version": "4.17.21", "publishedAt": "2021-02-20T15:42:16Z", "isDeprecated": false } ] }
Error response:
{ "system": "npm", "packages": [ { "package": "nonexistent-pkg", "error": "HTTP 404: Not Found" } ] }
Error Handling HTTP 404: Package not found - check spelling and ecosystem Network error: deps.dev API may be temporarily unavailable No default version: Script returns the latest available version with a note Rules Always use the script instead of manual curl commands The script handles URL encoding automatically Multiple packages are fetched in parallel for efficiency Use isDeprecated field to warn users about deprecated packages