# Zulip

**Canonical:** https://apis.io/providers/zulip/  
**Website:** https://zulip.com/  
**APIs profiled:** 17

Zulip is an open-source team chat application with a unique topic-based threading model. Zulip's APIs power the web and mobile apps and provide REST endpoints, incoming webhooks, outgoing webhooks, and event-driven integrations to connect Zulip with external services.

## Kin Score — 34.0 / 100 (thin)

Scored 2026-08-20 under rubric 0.12.0. Trend: flat (+0.0 from 34.0).

| Facet | Score |
|---|---|
| Discoverability | 55.6 |
| Contract Quality | 65.4 |
| Governance | 11.4 |
| Contract Governance | 11.4 |
| Operational Transparency | 13.2 |
| Developer Ergonomics | 21.4 |
| Commercial Clarity | 23.7 |
| Access Clarity | 23.7 |

## Agent readiness — 36.3 (agent-ready)

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

## Access

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

## APIs (17)

- **Zulip REST API** — The Zulip REST API powers the Zulip web and mobile apps. It provides programmatic access to messages, streams, users, organizations, and all other Zulip functionality. Anything ...
- **Zulip Events API** — The Zulip Events API delivers real-time updates from a Zulip server to a client via an HTTPS long-poll. Clients register an event queue via POST /api/v1/register, then call GET ...
- **Zulip Webhooks** — Zulip supports both incoming webhooks (allowing third-party services to push data to Zulip) and outgoing webhooks (allowing Zulip to send HTTP POST payloads to external services...
- **Zulip authentication API** — The authentication API from Zulip — 4 operation(s) for authentication.
- **Zulip bots API** — The bots API from Zulip — 1 operation(s) for bots.
- **Zulip channels API** — The channels API from Zulip — 23 operation(s) for channels.
- **Zulip drafts API** — The drafts API from Zulip — 4 operation(s) for drafts.
- **Zulip invites API** — The invites API from Zulip — 5 operation(s) for invites.
- **Zulip messages API** — The messages API from Zulip — 16 operation(s) for messages.
- **Zulip mobile API** — The mobile API from Zulip — 6 operation(s) for mobile.
- **Zulip navigation_views API** — The navigation_views API from Zulip — 2 operation(s) for navigation_views.
- **Zulip real_time_events API** — The real_time_events API from Zulip — 4 operation(s) for real_time_events.
- **Zulip reminders API** — The reminders API from Zulip — 2 operation(s) for reminders.
- **Zulip scheduled_messages API** — The scheduled_messages API from Zulip — 2 operation(s) for scheduled_messages.
- **Zulip server_and_organizations API** — The server_and_organizations API from Zulip — 16 operation(s) for server_and_organizations.
- **Zulip users API** — The users API from Zulip — 29 operation(s) for users.
- **Zulip webhooks API** — The webhooks API from Zulip — 1 operation(s) for webhooks.

## Agentic access (1)

- **Zulip Agentic Access** — 161 operations · 113 acting · 2 human-in-the-loop

## Security (4)

- **Zulip Authentication** — http · 1 scheme
- **Zulip Domain Security** — TLSv1.3 · HSTS · DMARC
- **Zulip Vulnerability Disclosure** — Hackerone
- **Zulip Trust Center** — HIPAA, GDPR

## Plans (1)

- **Zulip Plans Pricing**

## Tags

Collaboration, Messaging, Team Chat, Webhook

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