name: Version Signal
description: >-
  Returns the current stable version and publication date of any npm or PyPI package, sourced from the canonical
  registry. A free, no-signup lookup tool with a browser UI and a machine-readable API, hosted on a Cloudflare Worker.
url: https://raw.githubusercontent.com/api-evangelist/version-signal-api/refs/heads/main/apis.yml
created: '2026-09-20'
modified: '2026-09-20'
specificationVersion: '0.21'
tags:
  - Developer Tools
  - Package Registry
  - npm
  - PyPI
  - Versions
  - Software Supply Chain
  - Dependency Management
  - open-source metadata
tags_raw:
  - developer tools
  - package registry
  - npm
  - pypi
  - versions
  - software supply chain
  - dependency management
  - open-source metadata
apis:
- aid: version-signal-api:version-signal-api-version-api
  name: Version Signal Version API
  description: The Version API from Version Signal — 1 operation(s) for version.
  humanURL: https://version-signal.inboxtzdjqv.workers.dev/
  tags:
  - Version
  properties:
  - type: OpenAPI
    url: openapi/version-signal-api-version-api-openapi.yml
  - type: LLMsTxt
    url: llms/version-signal-api-llms.txt
  - type: LLMsTxt
    url: https://version-signal.inboxtzdjqv.workers.dev/llms.txt
  - type: Documentation
    url: https://version-signal.inboxtzdjqv.workers.dev/
maintainers:
  - FN: Version Signal
    url: https://version-signal.inboxtzdjqv.workers.dev/
x-generated:
  by: apis.io/add
  model: claude-opus-4-8
  confidence: 88
  at: '2026-09-20T13:31:04.867Z'
common:
- type: Overlay
  url: overlays/version-signal-api-openapi-overlay.yaml
- type: Website
  url: https://version-signal.inboxtzdjqv.workers.dev/
- type: Documentation
  url: https://version-signal.inboxtzdjqv.workers.dev/
- type: DomainSecurity
  url: security/version-signal-api-domain-security.yml
- type: Authentication
  url: authentication/version-signal-api-authentication.yml
- type: WellKnown
  url: well-known/version-signal-api-well-known.yml
- type: AgentSkill
  url: skills/_index.yml
- type: ErrorCatalog
  url: errors/version-signal-api-problem-types.yml
- type: Conventions
  url: conventions/version-signal-api-conventions.yml
- type: Lifecycle
  url: lifecycle/version-signal-api-lifecycle.yml
- type: Conformance
  url: conformance/version-signal-api-conformance.yml
- type: Plans
  url: plans/version-signal-api-plans-pricing.yml
- type: RateLimits
  url: rate-limits/version-signal-api-rate-limits.yml
x-enrichment:
  date: '2026-09-20'
  status: enriched
  artifacts_added: 17
  pass: local-v3