# Version Signal

**Canonical:** https://apis.io/providers/version-signal-api/  
**Website:** https://version-signal.inboxtzdjqv.workers.dev/  
**APIs profiled:** 1

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.

## Kin Score — 24.2 / 100 (emerging)

Scored 2026-10-09 under rubric 0.23.0. Trend: flat (+0.0 from 24.2).

| Facet | Score |
|---|---|
| Discoverability | 55.4 |
| Contract Quality | 38.6 |
| Contract Governance | 0.0 |
| Operational Transparency | 0.0 |
| Developer Ergonomics | 23.2 |
| Access Clarity | 21.1 |

Regulatory layer — **Horizontal (data, software, accessibility, platform)**: 16.7 (matched via fallback).

## Agent readiness — 25.2 (agent-aware)

| Dimension | Value |
|---|---|
| Spec Presence | yes |
| Agentic Access | no |
| Reversibility Documented | na |
| MCP Server | no |
| Auth Clarity | bearer |
| Idempotency | na |
| Error Semantics | documented |
| OpenAPI Examples | no |
| Rate Limit Signal | documented |
| Event Surface Described | no |
| Agent Skills | derived |
| Well Known Catalog | no |
| Consent Identity | no |
| Agent Card | no |
| Dry Run Mode | na |
| Delegated Identity | no |
| Protected Resource Metadata | no |
| Dynamic Client Registration | no |
| Agentic Commerce | no |

## APIs (1)

- **Version Signal Version API** — The Version API from Version Signal — 1 operation(s) for version.

## Security (2)

- **Version Signal Api Authentication** — none · 0 schemes
- **Version Signal Api Domain Security** — TLSv1.3 · DMARC

## Plans (1)

- **Version Signal Api Plans Pricing**

## Tags

Developer Tools, Package Registry, npm, PyPI, Versions, Software Supply Chain, Dependency Management, open-source metadata

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Profiled by [API Evangelist](https://apievangelist.com) and published on [APIs.io](https://apis.io/providers/version-signal-api/). Scores are computed from the provider's own public artifacts under a published rubric.