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Postscript Messages API

Send promotional, transactional or conversational SMS and MMS to an existing subscriber, and read the resulting message request and sent message.

Postscript Messages API is one of 7 APIs that Postscript publishes on the APIs.io network, described by a machine-readable OpenAPI specification.

Tagged areas include Message and SMS. The published artifact set on APIs.io includes an OpenAPI specification.

This API exposes 3 operations across 3 paths. It is described by OpenAPI 3.2.0, at version 2.0.

Requests are made against a single base URL, https://api.postscript.io.

3 operations 3 paths 0 schemas 2 GET1 POST

Metadata

The identity and technical contract details declared by the specification.

Specification
OpenAPI 3.2.0
API Version
2.0
Base URL
https://api.postscript.io
Authentication
API Key
Terms of Service
Resource Areas
1

Authentication & Security 1

Postscript Messages API declares 1 security scheme for authenticating requests. An API key is passed in the header as Authorization (sec0). By default, every request must be authenticated.

Paths & Operations 3

Across 3 paths, the API surfaces 3 operations — 2 GET, 1 POST. Each is listed below with its method, path, parameters, and response codes.

Messages 3

Send messages and read message requests and sent messages.

POST
/api/v2/message_requests
Send Message
create-message 1 param body → 202400
GET
/api/v2/message_requests/{id}
Get Message Request
get-message-request 2 params → 200400
GET
/api/v2/sent_messages/{id}
Get Sent Message
get-sent-message 2 params → 200400

Specification

The full machine-readable OpenAPI contract behind this narrative.

Source

postscript-messages-api-openapi.yml Raw ↑

Other APIs Postscript publishes across the network.

Postscript Subscribers API
Postscript Events API
Postscript Keywords API
Postscript Webhooks API
Postscript Compliance API
Postscript Identity API
Where this information came from

This is an independent, third-party profile of Postscript Messages API, published by API Evangelist. We do not operate, host, resell, or support these APIs, and we are not affiliated with or endorsed by the company unless stated above. Everything here is built from publicly available information — the company's own site, developer portal, documentation, public repositories, and the specifications it publishes for public use. Nothing is obtained by breaching a system, defeating an access control, or using credentials.

The Kin Score and Agent Readiness rating are independently calculated assessments of a company's public API artifacts, scored against a published rubric. They are not certifications, endorsements, security assessments, or audits.

Corrections, re-scores, and removal are free — no partnership or purchase required, and you do not need to justify the request. A removed company is recorded as unrated, never scored zero for having asked. Acknowledgement within one business day; removal within two.

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