# Synapse

**Canonical:** https://apis.io/providers/synapse/  
**APIs profiled:** 9

Synapse is the reference Matrix homeserver implementation maintained by Element (formerly by the Matrix.org Foundation). Written in Python and Rust, it implements the Matrix open standard for secure, decentralized real-time communication. Synapse powers thousands of deployments worldwide and provides Client-Server, Server-Server (federation), Application Service, Identity Service, and Admin APIs. Since version 1.99, maintained by Element under AGPL-3.0.

## Kin Score — 37.6 / 100 (thin)

Scored 2026-08-21 under rubric 0.12.0. Trend: flat (+0.5 from 37.1).

| Facet | Score |
|---|---|
| Discoverability | 74.1 |
| Contract Quality | 60.0 |
| Governance | 13.6 |
| Contract Governance | 13.6 |
| Operational Transparency | 28.9 |
| Developer Ergonomics | 35.7 |
| Commercial Clarity | 13.2 |
| Access Clarity | 13.2 |

## Agent readiness — 29.1 (agent-aware)

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

## Access

Paid · Self-serve signup — onboarding: self-serve, pricing: paid, trial: no (confidence: high).

## APIs (9)

- **Synapse Application Service API** — API for integrating application services (bridges and bots) with the Matrix homeserver. Allows third-party applications to handle namespaced user IDs and room aliases, enabling ...
- **Synapse Federation API** — Federation management
- **Synapse Media API** — Media file administration
- **Synapse Registration API** — User registration and tokens
- **Synapse Reports API** — Event and user reports
- **Synapse Rooms API** — Room administration and membership
- **Synapse Server API** — Server information and background updates
- **Synapse Statistics API** — Server usage statistics
- **Synapse Users API** — User account management

## Agentic access (1)

- **Synapse Agentic Access** — 18 operations · 6 acting · 1 human-in-the-loop

## Security (3)

- **Synapse Authentication** — http · 1 scheme
- **Synapse Domain Security** — TLSv1.3 · HSTS · DMARC
- **Synapse Vulnerability Disclosure** — security.txt · contact published

## Plans (1)

- **Synapse Plans Pricing**

## Tags

Chat, Collaboration, Decentralized, Federation, Matrix, Messaging, Open-Source, Real-Time

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