# Postscript Partner API

**Canonical:** https://apis.io/apis/postscript/postscript-api/  
**Provider:** Postscript — https://apis.io/providers/postscript/  
**Base URL:** https://api.postscript.io  
**Documentation:** https://developers.postscript.io

Postscript Partner API is one of 8 APIs that [Postscript](https://apis.io/providers/postscript/) publishes on the [APIs.io](https://apis.io/) network, described by a machine-readable OpenAPI specification. Tagged areas include SMS, Subscribers, Message, Keywords, and Event. The published artifact set on APIs.io includes an OpenAPI specification, API documentation, a getting-started guide, authentication docs, rate-limit docs, and an API reference.

The Postscript Partner API v2 enables partners and Shopify shops to manage SMS subscribers, read opt-in keywords, send custom events into Flow Builder, send SMS and MMS messages, configure webhook subscriptions, and run TCPA compliance operations. Authentication is a private API key sent as a bearer token, with partners delegating to a shop through the X-Postscript-Shop-Token header.

## Machine-readable artifacts (9)

- **OpenAPI** — https://raw.githubusercontent.com/api-evangelist/postscript/refs/heads/main/openapi/_original/postscript-partner-api-openapi.yml
- **Documentation** — https://developers.postscript.io
- **GettingStarted** — https://developers.postscript.io/docs/getting-started
- **Authentication** — https://developers.postscript.io/docs/api-authentication
- **RateLimits** — https://developers.postscript.io/docs/rate-limits
- **APIReference** — https://developers.postscript.io/reference
- **ChangeLog** — https://developers.postscript.io/changelog
- **Webhooks** — https://developers.postscript.io/docs/configuring-webhooks
- **APIsJSON** — https://raw.githubusercontent.com/api-evangelist/postscript/refs/heads/main/apis.yml

## Other Postscript APIs (7)

- [Postscript Subscribers API](https://apis.io/apis/postscript/postscript-subscribers-api/)
- [Postscript Events API](https://apis.io/apis/postscript/postscript-events-api/)
- [Postscript Keywords API](https://apis.io/apis/postscript/postscript-keywords-api/)
- [Postscript Messages API](https://apis.io/apis/postscript/postscript-messages-api/)
- [Postscript Webhooks API](https://apis.io/apis/postscript/postscript-webhooks-api/)
- [Postscript Compliance API](https://apis.io/apis/postscript/postscript-compliance-api/)
- [Postscript Identity API](https://apis.io/apis/postscript/postscript-identity-api/)

## Tags

SMS, Subscribers, Message, Keywords, Event, Webhook, Compliance

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Profiled by [API Evangelist](https://apievangelist.com) and published on [APIs.io](https://apis.io/apis/postscript/postscript-api/). The API's provider profile, Kin Score and agent-readiness rating are at https://apis.io/providers/postscript/.