sinch-fax-apilisted

Send and receive faxes programmatically with Sinch Fax API. Use when building fax workflows, fax-to-email delivery, sending PDFs by fax, checking fax status, managing fax services, configuring cover pages, receiving fax webhooks, or integrating fax into healthcare, legal, or financial applications.
sinch/skills · ★ 8 · AI & Automation · score 78

Install: claude install-skill sinch/skills

# Sinch Fax API ## Overview The Sinch Fax API lets you send and receive faxes programmatically. It supports multiple file formats, webhooks for incoming faxes, fax-to-email delivery, and automatic retries. Used for healthcare, legal, financial, and government applications where fax remains a required communication channel. **Auth:** See [sinch-authentication](../sinch-authentication/SKILL.md) for setup. ## Getting Started ### Agent Credentials handling Store credentials in environment variables — never hardcode tokens or keys in commands or source code: ```bash export SINCH_PROJECT_ID="your-project-id" export SINCH_KEY_ID="your-key-id" export SINCH_KEY_SECRET="your-key-secret" export SINCH_ACCESS_TOKEN="your-oauth-token" ``` ### Authentication Ensure that authentication headers are properly set when making API calls. The Fax API uses Bearer token authentication: ```bash -H "Authorization: Bearer $SINCH_ACCESS_TOKEN" ``` See [sinch-authentication](../sinch-authentication/SKILL.md) for full setup, most importantly how to obtain `{SINCH_ACCESS_TOKEN}` (OAuth2 client-credentials — do not mint your own JWT). Before generating code, gather from the user: approach (SDK or direct API), language (Node.js, Python, Java, .NET, curl), and use case (sending, receiving, fax-to-email, or managing services). Do not assume defaults. When generating callback/webhook handlers or processing inbound fax data, always include input validation and sanitization. Treat all inbound content