Telstra website screenshot

Telstra

Telstra is Australia's largest telecommunications and mobile network operator, providing fixed broadband, mobile voice and data, enterprise networking, and IoT connectivity across Australia and into Asia. Telstra exposes a developer programme at dev.telstra.com fronting carrier-grade Messaging (SMS / MMS) and Mobile Number Verification APIs, with official SDKs in Python, Node.js, Java, .NET, and Go, and Arduino libraries for the Telstra Cat-1 and Cat-M1 IoT development kits. APIs are reached at tapi.telstra.com behind OAuth 2.0 client credentials with the NSMS or MNV scopes.

Telstra publishes 6 APIs on the APIs.io network, including Authentication API, HealthCheck API, MMS API, and 3 more. Tagged areas include Telecommunications, Telco, Mobile, Messaging, and SMS.

The Telstra catalog on APIs.io includes 1 JSON-LD context and 2 Spectral governance rulesets.

Telstra’s developer surface includes authentication, developer portal, documentation, signup flow, engineering blog, support, GitHub presence, and 24 more developer resources.

🌐 Visit website 📡 Source on GitHub
57.8/100 strong ▬ flat Agent 31/100 agent aware Full breakdown ↓
scored 2026-07-28 · rubric v0.6
AccessFreemiumSelf serveFree trial⚡ Free to try
6 APIs 14 Features
TelecommunicationsTelcoMobileMessagingSMSMMSNetworksAustraliaVerification

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-07-28 · rubric v0.6
Composite quality — 57.8/100 · strong
Contract Quality 18.5 / 25
Developer Ergonomics 10.9 / 20
Commercial Clarity 10.0 / 20
Operational Transparency 2.7 / 13
Governance 8.3 / 12
Discoverability 7.4 / 10
Agent readiness — 31/100 · agent aware
Machine-Readable Contract 18 / 18
Agentic Access Contract 10 / 10
MCP Server 0 / 12
Machine-Readable Auth 10 / 10
Idempotency 0 / 9
Stable Error Semantics 0 / 8
Request/Response Examples 0 / 7
Rate-Limit Signaling 7 / 7
Typed Event Surface 0 / 6
Agent Skills 0 / 5
Well-Known Catalog 0 / 4
Consent & Bot Identity 0 / 3
A2A Agent Card 0 / 8
Dry-Run / Simulate Mode 0 / 4
Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. This rating is computed from github.com/api-evangelist/telstra: open an issue to ask a question, or submit a pull request to add artifacts. Want it done for you? Prioritized profiling — $2,500 →

APIs 6

Individual APIs this provider publishes, each with its own machine-readable definition.

Telstra Authentication API

OAuth 2.0 client credentials token issuance.

Telstra HealthCheck API

Service health checks for SMS and MMS messaging surfaces.

Telstra MMS API

Send, retrieve, and check status of MMS messages.

Telstra Provisioning API

Create, retrieve, and delete dedicated number subscriptions.

Telstra SMS API

Send, retrieve, and check status of SMS messages.

Telstra Verification API

Mobile number verification operations.

Postman Collections 6

Ready-to-run Postman collections for exercising this provider's APIs.

Telstra Messaging Authentication API

POSTMAN

Telstra Messaging Authentication HealthCheck API

POSTMAN

Telstra Messaging Authentication MMS API

POSTMAN

Telstra Messaging Authentication Provisioning API

POSTMAN

Telstra Messaging Authentication SMS API

POSTMAN

Telstra Messaging Authentication Verification API

POSTMAN

Open Collections 2

Open, tool-agnostic API collections (OpenAPI-derived and Bruno).

Telstra Messaging API

OPEN COLLECTION

Telstra Mobile Number Verification API

OPEN COLLECTION

Pricing Plans 1

Published pricing tiers and plan structures.

Telstra Plans Pricing

2 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Telstra Rate Limits

0 limits

RATE LIMITS

FinOps 1

Cost, billing, and metering signals for API financial operations.

Telstra Finops

FINOPS

Features 14

Notable capabilities this provider offers.

SMS messaging (single, multi-recipient) over the Telstra mobile network
MMS messaging with multipart payloads (image, audio, video, SMIL, vCard)
Inbound replies on Telstra-provisioned dedicated virtual numbers
Delivery status notifications via push callbacks (notifyURL) and pull status endpoint
Scheduled delivery and validity-period controls
Priority message flag and per-message user reference
OAuth 2.0 client credentials grant with NSMS scope (3599 second bearer tokens)
Free Trial tier with Telstra-supplied trial numbers and whitelisted recipients
Commercial Paid tier with negotiated per-message pricing and SLA
International SMS reach beyond Australia
Official SDKs in Python, Node.js, Java, .NET, and Go
Service healthchecks for SMS and MMS surfaces
Mobile Number Verification — silent MSISDN match on the Telstra data network (separate API)
Arduino development kits for Cat-1 and Cat-M1 IoT modules on the Telstra network

Scroll for all 14

Semantic Vocabularies 1

JSON-LD contexts and semantic vocabularies used across these APIs.

Telstra Context

0 classes · 5 properties

JSON-LD

Spectral Rules 2

Spectral governance rulesets for linting and validating these APIs.

Telstra API Rules

5 rules · 3 warnings 2 info

SPECTRAL

Telstra API Rules

5 rules · 2 errors 3 warnings

SPECTRAL

JSON Schema 2

Standalone JSON Schema definitions for this provider's data models.

Telstra Message

15 properties

JSON SCHEMA

Telstra Subscription

5 properties

JSON SCHEMA

JSON Structure 1

JSON Structure definitions describing this provider's data shapes.

Telstra Message Structure

0 properties

JSON STRUCTURE

Examples 3

Example request and response payloads for these APIs.

Telstra Create Subscription Example

2 fields

EXAMPLE

Telstra Oauth Token Example

2 fields

EXAMPLE

Telstra Send Sms Example

2 fields

EXAMPLE

Security Posture 2

Authentication, domain security, vulnerability disclosure, and trust-center signals.

Telstra Authentication

oauth2 · 1 scheme

SECURITY

Telstra Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Scopes 1

OAuth scopes governing access to this provider's APIs.

Telstra Scopes

2 scopes · clientCredentials

2 scopes

SCOPES

Agentic Access 1

Recommended x-agentic-access execution contracts for AI agents.

Telstra Agentic Access

13 operations · 6 acting

13 operations · 6 acting

AGENTIC

Resources

Get Started 3

Portal, sign-up, and the first successful call

Portal
Portal
 Portal
Portal
 Signup
Signup

Documentation 1

Reference material describing how the API behaves

Documentation
Documentation

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess
AgenticAccess

Design & Contract 2

Pagination, idempotency, versioning, errors, and events

SpectralRuleset
SpectralRuleset
 Vocabulary
Vocabulary

Build 10

SDKs, sample code, and the tooling you integrate with

PostmanWorkspace
PostmanWorkspace
 GitHubOrganization
GitHubOrganization
 GitHub
GitHub
 SDKs
SDKs
 SDKs
SDKs
 SDKs
SDKs
 SDKs
SDKs
 SDKs
SDKs
 Tools
Tools
 Tools
Tools

Scroll for all 10

Access & Security 3

Authentication, authorization, and security posture

DomainSecurity
DomainSecurity
 Authentication
Authentication
 OAuthScopes
OAuthScopes

Operate 4

Status, limits, changes, and where to get help

StatusPage
StatusPage
 Support
Support
 Forums
Forums
 RateLimits
RateLimits

Commercial 5

Pricing, plans, and the legal terms of use

TermsOfService
TermsOfService
 PrivacyPolicy
PrivacyPolicy
 License
License
 Plans
Plans
 FinOps
FinOps

Company 2

The organization behind the API

LinkedIn
LinkedIn
 Blog
Blog

Source (apis.yml)

apis.yml Raw ↑ 
aid: telstra
url: https://raw.githubusercontent.com/api-evangelist/telstra/refs/heads/main/apis.yml
apis:
- aid: telstra:telstra-authentication-api
  name: Telstra Authentication API
  description: OAuth 2.0 client credentials token issuance.
  humanURL: https://dev.telstra.com
  baseURL: https://tapi.telstra.com/v2
  tags:
  - Authentication
  properties:
  - type: OpenAPI
    url: openapi/telstra-authentication-api-openapi.yml
  - type: Documentation
    url: https://dev.telstra.com
  - type: JSONSchema
    url: json-schema/telstra-message-schema.json
  - type: JSONSchema
    url: json-schema/telstra-subscription-schema.json
  - type: JSONStructure
    url: json-structure/telstra-message-structure.json
  - type: JSONLD
    url: json-ld/telstra-context.jsonld
  - type: Examples
    url: examples/telstra-send-sms-example.json
  - type: Examples
    url: examples/telstra-create-subscription-example.json
  - type: SDKs
    url: https://github.com/telstra/MessagingAPI-SDK-python
  - type: SDKs
    url: https://github.com/telstra/MessagingAPI-SDK-node
  - type: SDKs
    url: https://github.com/telstra/MessagingAPI-SDK-Java
  - type: SDKs
    url: https://github.com/telstra/MessagingAPI-SDK-dotnet
  - type: SDKs
    url: https://github.com/telstra/MessagingAPI-SDK-Go
- aid: telstra:telstra-healthcheck-api
  name: Telstra HealthCheck API
  description: Service health checks for SMS and MMS messaging surfaces.
  humanURL: https://dev.telstra.com
  baseURL: https://tapi.telstra.com/v2
  tags:
  - HealthCheck
  properties:
  - type: OpenAPI
    url: openapi/telstra-healthcheck-api-openapi.yml
  - type: Documentation
    url: https://dev.telstra.com
  - type: JSONSchema
    url: json-schema/telstra-message-schema.json
  - type: JSONSchema
    url: json-schema/telstra-subscription-schema.json
  - type: JSONStructure
    url: json-structure/telstra-message-structure.json
  - type: JSONLD
    url: json-ld/telstra-context.jsonld
  - type: Examples
    url: examples/telstra-send-sms-example.json
  - type: Examples
    url: examples/telstra-create-subscription-example.json
  - type: SDKs
    url: https://github.com/telstra/MessagingAPI-SDK-python
  - type: SDKs
    url: https://github.com/telstra/MessagingAPI-SDK-node
  - type: SDKs
    url: https://github.com/telstra/MessagingAPI-SDK-Java
  - type: SDKs
    url: https://github.com/telstra/MessagingAPI-SDK-dotnet
  - type: SDKs
    url: https://github.com/telstra/MessagingAPI-SDK-Go
- aid: telstra:telstra-mms-api
  name: Telstra MMS API
  description: Send, retrieve, and check status of MMS messages.
  humanURL: https://dev.telstra.com
  baseURL: https://tapi.telstra.com/v2
  tags:
  - MMS
  properties:
  - type: OpenAPI
    url: openapi/telstra-mms-api-openapi.yml
  - type: Documentation
    url: https://dev.telstra.com
  - type: JSONSchema
    url: json-schema/telstra-message-schema.json
  - type: JSONSchema
    url: json-schema/telstra-subscription-schema.json
  - type: JSONStructure
    url: json-structure/telstra-message-structure.json
  - type: JSONLD
    url: json-ld/telstra-context.jsonld
  - type: Examples
    url: examples/telstra-send-sms-example.json
  - type: Examples
    url: examples/telstra-create-subscription-example.json
  - type: SDKs
    url: https://github.com/telstra/MessagingAPI-SDK-python
  - type: SDKs
    url: https://github.com/telstra/MessagingAPI-SDK-node
  - type: SDKs
    url: https://github.com/telstra/MessagingAPI-SDK-Java
  - type: SDKs
    url: https://github.com/telstra/MessagingAPI-SDK-dotnet
  - type: SDKs
    url: https://github.com/telstra/MessagingAPI-SDK-Go
- aid: telstra:telstra-provisioning-api
  name: Telstra Provisioning API
  description: Create, retrieve, and delete dedicated number subscriptions.
  humanURL: https://dev.telstra.com
  baseURL: https://tapi.telstra.com/v2
  tags:
  - Provisioning
  properties:
  - type: OpenAPI
    url: openapi/telstra-provisioning-api-openapi.yml
  - type: Documentation
    url: https://dev.telstra.com
  - type: JSONSchema
    url: json-schema/telstra-message-schema.json
  - type: JSONSchema
    url: json-schema/telstra-subscription-schema.json
  - type: JSONStructure
    url: json-structure/telstra-message-structure.json
  - type: JSONLD
    url: json-ld/telstra-context.jsonld
  - type: Examples
    url: examples/telstra-send-sms-example.json
  - type: Examples
    url: examples/telstra-create-subscription-example.json
  - type: SDKs
    url: https://github.com/telstra/MessagingAPI-SDK-python
  - type: SDKs
    url: https://github.com/telstra/MessagingAPI-SDK-node
  - type: SDKs
    url: https://github.com/telstra/MessagingAPI-SDK-Java
  - type: SDKs
    url: https://github.com/telstra/MessagingAPI-SDK-dotnet
  - type: SDKs
    url: https://github.com/telstra/MessagingAPI-SDK-Go
- aid: telstra:telstra-sms-api
  name: Telstra SMS API
  description: Send, retrieve, and check status of SMS messages.
  humanURL: https://dev.telstra.com
  baseURL: https://tapi.telstra.com/v2
  tags:
  - SMS
  properties:
  - type: OpenAPI
    url: openapi/telstra-sms-api-openapi.yml
  - type: Documentation
    url: https://dev.telstra.com
  - type: JSONSchema
    url: json-schema/telstra-message-schema.json
  - type: JSONSchema
    url: json-schema/telstra-subscription-schema.json
  - type: JSONStructure
    url: json-structure/telstra-message-structure.json
  - type: JSONLD
    url: json-ld/telstra-context.jsonld
  - type: Examples
    url: examples/telstra-send-sms-example.json
  - type: Examples
    url: examples/telstra-create-subscription-example.json
  - type: SDKs
    url: https://github.com/telstra/MessagingAPI-SDK-python
  - type: SDKs
    url: https://github.com/telstra/MessagingAPI-SDK-node
  - type: SDKs
    url: https://github.com/telstra/MessagingAPI-SDK-Java
  - type: SDKs
    url: https://github.com/telstra/MessagingAPI-SDK-dotnet
  - type: SDKs
    url: https://github.com/telstra/MessagingAPI-SDK-Go
- aid: telstra:telstra-verification-api
  name: Telstra Verification API
  description: Mobile number verification operations.
  humanURL: https://dev.telstra.com
  baseURL: https://tapi.telstra.com/v2
  tags:
  - Verification
  properties:
  - type: OpenAPI
    url: openapi/telstra-verification-api-openapi.yml
  - type: Documentation
    url: https://dev.telstra.com
  - type: JSONSchema
    url: json-schema/telstra-message-schema.json
  - type: JSONSchema
    url: json-schema/telstra-subscription-schema.json
  - type: JSONStructure
    url: json-structure/telstra-message-structure.json
  - type: JSONLD
    url: json-ld/telstra-context.jsonld
  - type: Examples
    url: examples/telstra-send-sms-example.json
  - type: Examples
    url: examples/telstra-create-subscription-example.json
  - type: SDKs
    url: https://github.com/telstra/MessagingAPI-SDK-python
  - type: SDKs
    url: https://github.com/telstra/MessagingAPI-SDK-node
  - type: SDKs
    url: https://github.com/telstra/MessagingAPI-SDK-Java
  - type: SDKs
    url: https://github.com/telstra/MessagingAPI-SDK-dotnet
  - type: SDKs
    url: https://github.com/telstra/MessagingAPI-SDK-Go
name: Telstra
tags:
- Telecommunications
- Telco
- Mobile
- Messaging
- SMS
- MMS
- Networks
- Australia
- Verification
kind: contract
accessModel:
  pricing: freemium
  onboarding: self-serve
  trial: true
  try_now: true
  public: false
  label: Freemium (free trial) · Self-serve signup
  confidence: high
  source:
  - plans
  - authentication
  generated: '2026-07-22'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/telstra.png
access: 3rd-Party
common:
- type: PostmanWorkspace
  url: https://www.postman.com/kinlaneapi/telstra/overview
- type: AgenticAccess
  url: agentic-access/telstra-agentic-access.yml
- type: DomainSecurity
  url: security/telstra-domain-security.yml
- type: Authentication
  url: authentication/telstra-authentication.yml
- type: OAuthScopes
  url: scopes/telstra-scopes.yml
- type: Portal
  url: https://dev.telstra.com
- type: Portal
  url: https://www.telstra.com.au
- type: Documentation
  url: https://dev.telstra.com
- type: Signup
  url: https://dev.telstra.com
- type: GitHubOrganization
  url: https://github.com/telstra
- type: StatusPage
  url: https://crowdsupport.telstra.com.au/t5/network-coverage/ct-p/Networkcoverage
- type: TermsOfService
  url: https://www.telstra.com.au/business-enterprise/legal/messaging-api-terms-of-service
- type: PrivacyPolicy
  url: https://www.telstra.com.au/privacy
- type: LinkedIn
  url: https://www.linkedin.com/company/telstra
- type: Blog
  url: https://exchange.telstra.com.au
- type: Support
  url: https://www.telstra.com.au/support
- type: Forums
  url: https://crowdsupport.telstra.com.au
- type: GitHub
  url: https://github.com/telstra
- url: https://github.com/telstra/MessagingAPI-SDK-python
  name: Python SDK
  type: SDKs
- url: https://github.com/telstra/MessagingAPI-SDK-node
  name: Node.js SDK
  type: SDKs
- url: https://github.com/telstra/MessagingAPI-SDK-Java
  name: Java SDK
  type: SDKs
- url: https://github.com/telstra/MessagingAPI-SDK-dotnet
  name: .NET SDK
  type: SDKs
- url: https://github.com/telstra/MessagingAPI-SDK-Go
  name: Go SDK
  type: SDKs
- url: https://github.com/telstra/tdev-doc-license
  name: Telstra Dev Documentation License
  type: License
- url: https://github.com/telstra/Cat-1-Development-Kit
  name: Telstra Cat-1 Development Kit (Arduino)
  type: Tools
- url: https://github.com/telstra/Cat-M1-Dev-Board
  name: Telstra Cat-M1 Development Board (Arduino)
  type: Tools
- url: plans/telstra-plans-pricing.yml
  type: Plans
- url: rate-limits/telstra-rate-limits.yml
  type: RateLimits
- url: finops/telstra-finops.yml
  type: FinOps
- url: rules/telstra-rules.yml
  type: SpectralRuleset
- url: vocabulary/telstra-vocabulary.yml
  type: Vocabulary
- type: Features
  data:
  - SMS messaging (single, multi-recipient) over the Telstra mobile network
  - MMS messaging with multipart payloads (image, audio, video, SMIL, vCard)
  - Inbound replies on Telstra-provisioned dedicated virtual numbers
  - Delivery status notifications via push callbacks (notifyURL) and pull status endpoint
  - Scheduled delivery and validity-period controls
  - Priority message flag and per-message user reference
  - OAuth 2.0 client credentials grant with NSMS scope (3599 second bearer tokens)
  - Free Trial tier with Telstra-supplied trial numbers and whitelisted recipients
  - Commercial Paid tier with negotiated per-message pricing and SLA
  - International SMS reach beyond Australia
  - Official SDKs in Python, Node.js, Java, .NET, and Go
  - Service healthchecks for SMS and MMS surfaces
  - Mobile Number Verification — silent MSISDN match on the Telstra data network (separate API)
  - Arduino development kits for Cat-1 and Cat-M1 IoT modules on the Telstra network
  sources:
  - https://dev.telstra.com
  - https://github.com/telstra
  - https://github.com/telstra/MessagingAPI-SDK-python
  updated: '2026-05-25'
created: '2026-05-25T00:00:00.000Z'
modified: '2026-05-25'
position: Consuming
description: Telstra is Australia's largest telecommunications and mobile network operator, providing fixed broadband, mobile
  voice and data, enterprise networking, and IoT connectivity across Australia and into Asia. Telstra exposes a developer
  programme at dev.telstra.com fronting carrier-grade Messaging (SMS / MMS) and Mobile Number Verification APIs, with official
  SDKs in Python, Node.js, Java, .NET, and Go, and Arduino libraries for the Telstra Cat-1 and Cat-M1 IoT development kits.
  APIs are reached at tapi.telstra.com behind OAuth 2.0 client credentials with the NSMS or MNV scopes.
maintainers:
- FN: Kin Lane
  email: info@apievangelist.com
  X: apievangelist
  url: https://apievangelist.com
specificationVersion: '0.16'