# CloudTalk Help Center > CloudTalk developer documentation — REST API reference and integration guides. - [Help Center (436 pages)](https://help.cloudtalk.io/_llms/en/help-center.txt): Documentation for Help Center. - [API (104 pages)](https://help.cloudtalk.io/_llms/en/api.txt): Documentation for API. ## Webhooks ### Getting Started - [CloudTalk Webhooks](https://help.cloudtalk.io/guides/webhooks/overview.md): CloudTalk webhooks push real-time events (calls, contacts, users, messages, and AI insights) to your HTTPS endpoint as signed JSON, so you can react without polling. - [How to Verify CloudTalk Webhook Signatures](https://help.cloudtalk.io/guides/webhooks/verify-signatures.md): Every account-level CloudTalk webhook is signed with HMAC-SHA256. Learn how to verify the svix-id, svix-timestamp, and svix-signature headers with a library or manually. - [CloudTalk Webhook Delivery, Retries, and Best Practices](https://help.cloudtalk.io/guides/webhooks/delivery.md): How CloudTalk delivers webhooks: success criteria, the retry schedule, automatic endpoint disabling, duplicate handling, ordering, and best practices for reliable handlers. ### Events - [Call Webhook Events: Payloads for the call.* Triggers](https://help.cloudtalk.io/guides/webhooks/events/calls.md): Reference for CloudTalk's call webhook events (call.started, call.ringing, call.answered, call.held, call.resumed, call.ended, call.recording_ready, and call.tags_modified) with example payloads and field definitions. - [Contact Webhook Events: Payloads for the contact.* Triggers](https://help.cloudtalk.io/guides/webhooks/events/contacts.md): Reference for CloudTalk's contact webhook events (contact.created, contact.updated, and contact.deleted) with example payloads and field definitions. - [User Webhook Events: Payloads for the user.* Triggers](https://help.cloudtalk.io/guides/webhooks/events/users.md): Reference for CloudTalk's user webhook events (user.created, user.updated, user.deleted, and user.status_changed) with example payloads and field definitions. - [Message Webhook Events: Payloads for the message.* Triggers](https://help.cloudtalk.io/guides/webhooks/events/messages.md): Reference for CloudTalk's message webhook events (message.sent and message.received) with example payloads and field definitions for SMS, MMS, and WhatsApp. - [Conversation Intelligence Webhook Events: Transcripts and AI Analysis](https://help.cloudtalk.io/guides/webhooks/events/conversation-intelligence.md): Reference for CloudTalk's Conversation Intelligence webhook events (transcript.ready and cidata.ready) with example payloads covering transcripts, summaries, sentiment, topics, talk ratio, and call scoring. - [AI Voice Agent Webhook Events: Extracted Data Payloads](https://help.cloudtalk.io/guides/webhooks/events/voice-agents.md): Reference for CloudTalk's AI Voice Agent webhook event (voice_agent.extracted_data_ready) with an example payload and field definitions. - [Dialer Webhook Events: Dispositions and Survey Responses](https://help.cloudtalk.io/guides/webhooks/events/dialer.md): Reference for CloudTalk's Dialer webhook events (dialer.disposition_created and dialer.survey_filled) with example payloads and field definitions. ## MCP - [CloudTalk MCP](https://help.cloudtalk.io/guides/mcp/overview.md): The CloudTalk MCP server connects Claude, Cursor, and other AI assistants to your CloudTalk account: search calls, read transcripts, manage contacts, send SMS, and run AI Voice Agents in natural language. - [Quickstart: Connect Your AI Assistant to CloudTalk](https://help.cloudtalk.io/guides/mcp/quickstart.md): Connect Claude, Cursor, or any MCP-compatible client to the CloudTalk MCP server in five minutes using your API Access Key. - [MCP Recipes](https://help.cloudtalk.io/guides/mcp/recipes.md): Ready-to-use prompts for getting real work done with CloudTalk through Claude, Cursor, or any MCP client. Copy, paste, adapt. - [CloudTalk MCP Tool Reference](https://help.cloudtalk.io/guides/mcp/tools.md): Every tool the CloudTalk MCP server exposes: parameters, defaults, and limits across calls, contacts, messaging, AI Voice Agents, campaigns, and account data. ## What's new - [Changelog](https://help.cloudtalk.io/changelog.md): Updates to the CloudTalk API and developer documentation ## OpenAPI Specs - [openapi](/api-reference/openapi.json) > The links below point to documentation indexes. Follow each `/_llms/` index recursively until you reach documentation pages. ## Indexes - [English / Help Center (436 pages)](https://help.cloudtalk.io/_llms/en/help-center.txt): Documentation for English / Help Center. - [English / API (104 pages)](https://help.cloudtalk.io/_llms/en/api.txt): Documentation for English / API. - [German (432 pages)](https://help.cloudtalk.io/_llms/de.txt): Documentation for German. - [German / Hilfecenter (432 pages)](https://help.cloudtalk.io/_llms/de/hilfecenter.txt): Documentation for German / Hilfecenter. - [German / Hilfecenter / Integrationen (95 pages)](https://help.cloudtalk.io/_llms/de/hilfecenter/integrationen.txt): Documentation for German / Hilfecenter / Integrationen. - [Spanish (432 pages)](https://help.cloudtalk.io/_llms/es.txt): Documentation for Spanish. - [Spanish / Centro de ayuda (432 pages)](https://help.cloudtalk.io/_llms/es/centro-de-ayuda.txt): Documentation for Spanish / Centro de ayuda. - [Spanish / Centro de ayuda / Integraciones (95 pages)](https://help.cloudtalk.io/_llms/es/centro-de-ayuda/integraciones.txt): Documentation for Spanish / Centro de ayuda / Integraciones. - [French (432 pages)](https://help.cloudtalk.io/_llms/fr.txt): Documentation for French. - [French / Centre d'aide (432 pages)](https://help.cloudtalk.io/_llms/fr/centre-d-aide.txt): Documentation for French / Centre d'aide. - [French / Centre d'aide / Intégrations (95 pages)](https://help.cloudtalk.io/_llms/fr/centre-d-aide/integrations.txt): Documentation for French / Centre d'aide / Intégrations. - [Dutch (432 pages)](https://help.cloudtalk.io/_llms/nl.txt): Documentation for Dutch. - [Dutch / Helpcentrum (432 pages)](https://help.cloudtalk.io/_llms/nl/helpcentrum.txt): Documentation for Dutch / Helpcentrum. - [Portuguese (432 pages)](https://help.cloudtalk.io/_llms/pt.txt): Documentation for Portuguese. - [Portuguese / Centro de ajuda (432 pages)](https://help.cloudtalk.io/_llms/pt/centro-de-ajuda.txt): Documentation for Portuguese / Centro de ajuda. - [Portuguese / Centro de ajuda / Integrações (95 pages)](https://help.cloudtalk.io/_llms/pt/centro-de-ajuda/integracoes.txt): Documentation for Portuguese / Centro de ajuda / Integrações. 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