# Mosey

**Canonical:** https://apis.io/providers/mosey/  
**Website:** https://docs.mosey.com  
**APIs profiled:** 12

Mosey is a business compliance platform that helps multi-state companies open and manage state and local tax, HR, payroll, insurance, and registration accounts. The Mosey API is a composable set of OpenAPI 3.1 endpoints that let software platforms embed state compliance into their own products: sign up or authenticate a legal entity, register the states it operates in, generate and resolve compliance tasks, receive physical mail, and securely manage state-agency logins via short-lived hosted sessions. Authentication is OAuth2 (password grant). Mosey partnered with Gusto, Stripe, and Sequoia Consulting Group and was subsequently acquired by Gusto. This profile was surfaced as a Canaan Partners portfolio company and enriched by the API Evangelist pipeline from Mosey's public OpenAPI and developer documentation.

## Kin Score — 37.2 / 100 (thin)

Scored 2026-08-20 under rubric 0.12.0. Trend: flat (+0.0 from 37.2).

| Facet | Score |
|---|---|
| Discoverability | 81.5 |
| Contract Quality | 43.9 |
| Governance | 16.7 |
| Contract Governance | 16.7 |
| Operational Transparency | 0.0 |
| Developer Ergonomics | 42.3 |
| Commercial Clarity | 38.2 |
| Access Clarity | 38.2 |

## Agent readiness — 36.0 (agent-ready)

| Dimension | Value |
|---|---|
| Spec Presence | yes |
| Agentic Access | derived |
| Reversibility Documented | documented |
| MCP Server | no |
| Auth Clarity | yes |
| Idempotency | no |
| Error Semantics | verified |
| OpenAPI Examples | no |
| Rate Limit Signal | no |
| Event Surface Described | no |
| Agent Skills | derived |
| Well Known Catalog | no |
| Consent Identity | no |
| Agent Card | no |
| Dry Run Mode | no |

## Access

Self-serve signup — onboarding: self-serve, pricing: unknown, trial: no (confidence: medium).

## APIs (12)

- **Mosey Accounts API** — The Accounts API from Mosey — 7 operation(s) for accounts.
- **Mosey Agency Accounts API** — The Agency Accounts API from Mosey — 2 operation(s) for agency accounts.
- **Mosey Auth API** — The Auth API from Mosey — 2 operation(s) for auth.
- **Mosey Documents API** — The Documents API from Mosey — 1 operation(s) for documents.
- **Mosey Handbook API** — The Handbook API from Mosey — 3 operation(s) for handbook.
- **Mosey Legal Entity API** — The Legal Entity API from Mosey — 2 operation(s) for legal entity.
- **Mosey Locations API** — The Locations API from Mosey — 7 operation(s) for locations.
- **Mosey Logins API** — The Logins API from Mosey — 4 operation(s) for logins.
- **Mosey Mail API** — The Mail API from Mosey — 2 operation(s) for mail.
- **Mosey Regions API** — The Regions API from Mosey — 2 operation(s) for regions.
- **Mosey Signup API** — The Signup API from Mosey — 3 operation(s) for signup.
- **Mosey Tasks API** — The Tasks API from Mosey — 9 operation(s) for tasks.

## MCP servers (1)

- **Mosey MCP Server**

## Agentic access (1)

- **Mosey Agentic Access** — 52 operations · 29 acting

## Security (2)

- **Mosey Authentication** — oauth2 · 1 scheme
- **Mosey Domain Security** — TLSv1.3 · HSTS · DMARC

## Tags

Company, Compliance, Regulatory Technology, State Compliance, Tax, Payroll, HR, Business Operations

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