# Plaxo

**Canonical:** https://apis.io/providers/plaxo/  
**Website:** https://www.plaxo.com  
**APIs profiled:** 0

Plaxo was founded as a social networking service focused on address book synchronization and contact management. Over time, it evolved its platform to provide APIs for developers to integrate contact data, social features, and user profile management into applications. While the original consumer service has been discontinued, the company’s legacy API offerings remain of interest for historical and integration purposes. This profile aims to document the available technical resources, documentation, and contact points for the Plaxo API ecosystem.

## Kin Score — 2.2 / 100 (minimal)

Scored 2026-11-06 under rubric 0.27.0. Trend: flat (+0.0 from 2.2).

| Facet | Score |
|---|---|
| Discoverability | 35.7 |
| Contract Quality | 0.0 |
| Contract Governance | 0.0 |
| Operational Transparency | 0.0 |
| Developer Ergonomics | 0.0 |
| Access Clarity | 0.0 |

Regulatory layer — **Horizontal (data, software, accessibility, platform)**: 5.9 (matched via fallback).

## Agent readiness — 0.0 (human-only)

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

## Access

Unknown — onboarding: unknown, pricing: unknown, trial: no (confidence: low).

## Security (1)

- **Plaxo Domain Security** — DNSSEC

## Tags

Company, Contacts, Legacy, Social

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