Latest Package Version Lookup

Supported Ecosystems

npm

express

@types/node

pypi

requests

django

go

github.com/gin-gonic/gin

cargo

serde

tokio

maven

org.springframework:spring-core

nuget

Newtonsoft.Json

Workflow

1. 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
2. Run the get-versions script:

SCRIPT=scripts/get-versions.py
python3 $SCRIPT <system> <pkg1> [pkg2] ...

1. Report the results from the JSON output

Script Usage

python3 scripts/get-versions.py npm express

python3 scripts/get-versions.py npm express lodash @types/node

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

{
  "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
    }
  ]
}

{
  "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