Kudosity website screenshot

Kudosity

Kudosity is an Australian business messaging platform — formerly Burst SMS / TransmitSMS — running two live public REST APIs on two hosts. The Transmit Message API (v2) covers SMS, MMS, WhatsApp and RCS with API-managed webhooks and sender registration; the Transmit SMS API (v1) carries contacts, lists, dedicated virtual numbers, keywords, email-to-SMS and all reporting. Both share one account, one set of senders and one bill. Both ship public OpenAPI documents. What makes Kudosity unusual for its size is the agent-native surface layered on top: a hosted MCP server whose tools/list answers without credentials, llms.txt on both the docs and marketing hosts with per-section fan-out, and five published agent integrations — a Claude Code plugin, a GitHub Copilot extension, a Gemini CLI extension, an OpenClaw channel plugin and an SMS GitHub Action — all open source in a public GitHub organization. RCS is in beta; there is no voice product, no sandbox and no idempotency key.

Kudosity publishes 2 APIs on the APIs.io network: Transmit Message API and Transmit SMS API. Tagged areas include Messaging, SMS, MMS, RCS, and WhatsApp.

The Kudosity catalog on APIs.io includes 1 event-driven AsyncAPI specification.

Kudosity’s developer surface includes documentation, API reference, getting-started guide, support, engineering blog, pricing, signup flow, and 40 more developer resources.

62.2/100 strong ▲ 44.3 Agent 85/100 agent native Full breakdown ↓
scored 2026-07-27 · rubric v0.5
2 APIs 1 MCP Servers
MessagingSMSMMSRCSWhatsAppCommunicationsCPaaSWebhooksMCPAgent-nativeAustraliaNotificationsTwo-Way MessagingContact Management

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-07-27 · rubric v0.5
Composite quality — 62.2/100 · strong
Contract Quality 15.1 / 25
Developer Ergonomics 14.3 / 20
Commercial Clarity 18.4 / 20
Operational Transparency 5.1 / 13
Governance 0.0 / 12
Discoverability 9.3 / 10
Agent readiness — 85/100 · agent native
Machine-Readable Contract 18 / 18
Agentic Access Contract 15 / 15
MCP Server 12 / 12
Machine-Readable Auth 10 / 10
Idempotency 0 / 9
Stable Error Semantics 8 / 8
Request/Response Examples 7 / 7
Rate-Limit Signaling 7 / 7
Typed Event Surface 6 / 6
Agent Skills 5 / 5
Well-Known Catalog 0 / 4
Consent & Bot Identity 0 / 3
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/kudosity: 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 2

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

Transmit Message API

Current v2 REST API covering SMS, MMS, WhatsApp and RCS, plus API-managed webhooks with event-type filtering and sender registration with phone verification. 22 operations acros...

Transmit SMS API

Classic v1 REST API — fully supported, not deprecated. SMS sending with single-request multi-recipient batches and custom tracked-link domains, plus everything v2 does not carry...

MCP Servers 1

Model Context Protocol servers that expose these APIs to AI agents.

kudosity-mcp.yml

MCP SERVER

Pricing Plans 1

Published pricing tiers and plan structures.

Kudosity Plans

4 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Kudosity Rate Limits

0 limits

RATE LIMITS

Event Specifications 1

AsyncAPI definitions for this provider's event-driven and streaming APIs.

Security Posture 4

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

Kudosity Authentication

apiKey/http · 2 schemes

SECURITY

Kudosity Domain Security

TLSv1.3 · HSTS · DNSSEC · DMARC

SECURITY

Kudosity Vulnerability Disclosure

disclosure policy published

SECURITY

Kudosity Trust Center

SOC 2, ISO 27001

SECURITY

Agentic Access 1

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

Kudosity Agentic Access

57 operations · 42 acting

57 operations · 42 acting

AGENTIC

Resources

Get Started 4

Portal, sign-up, and the first successful call

Documentation 2

Reference material describing how the API behaves

Agent Surfaces 11

MCP servers, agent skills, and machine-readable catalogs

Scroll for all 11

Design & Contract 7

Pagination, idempotency, versioning, errors, and events

Scroll for all 7

Build 7

SDKs, sample code, and the tooling you integrate with

Scroll for all 7

Access & Security 6

Authentication, authorization, and security posture

Operate 5

Status, limits, changes, and where to get help

Commercial 4

Pricing, plans, and the legal terms of use

Company 1

The organization behind the API

Source (apis.yml)

apis.yml Raw ↑
accessModel:
  pricing: public
  onboarding: self-service
  trial: true
  try_now: true
  public: true
  label: Public, self-service with a free trial
  confidence: high
  source:
  - https://kudosity.com/pricing
  - https://kudosity.com/trial
  - https://developers.kudosity.com/docs/getting-started
  generated: '2026-07-27'
  method: searched
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/kudosity.png
name: Kudosity
description: 'Kudosity is an Australian business messaging platform — formerly Burst SMS / TransmitSMS — running two live
  public REST APIs on two hosts. The Transmit Message API (v2) covers SMS, MMS, WhatsApp and RCS with API-managed webhooks
  and sender registration; the Transmit SMS API (v1) carries contacts, lists, dedicated virtual numbers, keywords, email-to-SMS
  and all reporting. Both share one account, one set of senders and one bill. Both ship public OpenAPI documents. What makes
  Kudosity unusual for its size is the agent-native surface layered on top: a hosted MCP server whose tools/list answers without
  credentials, llms.txt on both the docs and marketing hosts with per-section fan-out, and five published agent integrations
  — a Claude Code plugin, a GitHub Copilot extension, a Gemini CLI extension, an OpenClaw channel plugin and an SMS GitHub
  Action — all open source in a public GitHub organization. RCS is in beta; there is no voice product, no sandbox and no idempotency
  key.'
url: https://kudosity.apievangelist.com/apis.yml
created: '2026-07-11'
modified: '2026-07-27'
specificationVersion: '0.21'
tags:
- Messaging
- SMS
- MMS
- RCS
- WhatsApp
- Communications
- CPaaS
- Webhooks
- MCP
- Agent-native
- Australia
- Notifications
- Two-Way Messaging
- Contact Management
apis:
- name: Transmit Message API
  description: Current v2 REST API covering SMS, MMS, WhatsApp and RCS, plus API-managed webhooks with event-type filtering
    and sender registration with phone verification. 22 operations across 15 paths, OpenAPI 3.0.3 with 127 component schemas
    and RFC 9457 problem details. Authenticated with an API key in the x-api-key header.
  humanURL: https://developers.kudosity.com/reference/transmit-message-api
  baseURL: https://api.transmitmessage.com
  tags:
  - Messaging
  - SMS
  - MMS
  - RCS
  - WhatsApp
  - Communications
  - CPaaS
  - Webhooks
  - Agent-native
  properties:
  - type: OpenAPI
    url: openapi/kudosity-transmit-message-openapi-original.yml
  - type: OpenAPI
    url: https://developers.kudosity.com/openapi/public-openapi.yaml
  - type: Documentation
    url: https://developers.kudosity.com/docs
  - type: APIReference
    url: https://developers.kudosity.com/reference/transmit-message-api
  - type: Authentication
    url: https://developers.kudosity.com/reference/authentication
  - type: Webhooks
    url: asyncapi/kudosity-webhooks.yml
  - type: ErrorCatalog
    url: errors/kudosity-problem-types.yml
  - type: DataModel
    url: data-model/kudosity-data-model.yml
- name: Transmit SMS API
  description: 'Classic v1 REST API — fully supported, not deprecated. SMS sending with single-request multi-recipient batches
    and custom tracked-link domains, plus everything v2 does not carry: contacts, lists and custom fields, bulk CSV import,
    dedicated virtual numbers, inbound keywords, email-to-SMS and all campaign reporting. 35 operations, OpenAPI 3.0.0, JSON
    or XML responses. Authenticated with HTTP Basic (API key + account secret).'
  humanURL: https://developers.kudosity.com/reference/transmit-sms-api
  baseURL: https://api.transmitsms.com
  tags:
  - Messaging
  - SMS
  - Communications
  - CPaaS
  - Contact Management
  - Reporting
  - Two-Way Messaging
  properties:
  - type: OpenAPI
    url: openapi/kudosity-transmit-sms-openapi-original.yml
  - type: OpenAPI
    url: https://developers.kudosity.com/openapi/api_documentation.yml
  - type: Documentation
    url: https://developers.kudosity.com/docs
  - type: APIReference
    url: https://developers.kudosity.com/reference/transmit-sms-api
  - type: Authentication
    url: https://developers.kudosity.com/reference/authentication
  - type: ErrorCodes
    url: errors/kudosity-error-codes.yml
maintainers:
- FN: Kudosity
  url: https://kudosity.com
  email: rachel.harvey@kudosity.com
generated:
  by: apis.io/add
  model: claude-opus-4-8
  confidence: 98
  at: '2026-07-11T18:18:34.530Z'
enriched:
  at: '2026-07-27'
  method: searched
  sources_supplied_by_provider: true
  supplied_by: Rachel Harvey, Kudosity (2026-07-27)
  canonical_sources:
  - https://developers.kudosity.com
  - https://developers.kudosity.com/llms.txt
  - https://developers.kudosity.com/docs/mcp
  - https://kudosity.com
common:
- type: DeveloperPortal
  url: https://developers.kudosity.com
- type: Documentation
  url: https://developers.kudosity.com/docs
- type: APIReference
  url: https://developers.kudosity.com/reference
- type: GettingStarted
  url: https://developers.kudosity.com/docs/getting-started
- type: Support
  url: https://help.kudosity.com/s/
- type: Blog
  url: https://kudosity.com/resources/articles
- type: GitHubOrganization
  url: https://github.com/kudosity
- type: Pricing
  url: https://kudosity.com/pricing
- type: SignUp
  url: https://kudosity.com/trial
- type: Login
  url: https://app.transmitsms.com
- type: TermsOfService
  url: https://kudosity.com/legal/terms-and-conditions
- type: PrivacyPolicy
  url: https://kudosity.com/legal/privacy-policy
- type: SLA
  url: https://kudosity.com/legal/service-level-agreement
- type: Compliance
  url: https://trust.kudosity.com/
- type: TrustCenter
  url: security/kudosity-trust-center.yml
- type: Security
  url: https://trust.kudosity.com/
- type: VulnerabilityDisclosure
  url: security/kudosity-vulnerability-disclosure.yml
- type: DomainSecurity
  url: security/kudosity-domain-security.yml
- type: Authentication
  url: authentication/kudosity-authentication.yml
- type: AgenticAccess
  url: agentic-access/kudosity-agentic-access.yml
- type: MCPServer
  url: mcp/kudosity-mcp.yml
- type: MCP
  url: https://developers.kudosity.com/mcp
- type: ToolCrosswalk
  url: mcp/kudosity-tool-crosswalk.yml
- type: AgentSkill
  url: skills/_index.yml
- type: LLMsTxt
  url: llms/kudosity-llms.txt
- type: LLMsTxt
  url: llms/kudosity-website-llms.txt
- type: Webhooks
  url: asyncapi/kudosity-webhooks.yml
- type: ErrorCatalog
  url: errors/kudosity-problem-types.yml
- type: ErrorCodes
  url: errors/kudosity-error-codes.yml
- type: RateLimits
  url: rate-limits/kudosity-rate-limits.yml
- type: Conventions
  url: conventions/kudosity-conventions.yml
- type: Examples
  url: examples/kudosity-examples.yml
- type: DataModel
  url: data-model/kudosity-data-model.yml
- type: Conformance
  url: conformance/kudosity-conformance.yml
- type: Lifecycle
  url: lifecycle/kudosity-lifecycle.yml
- type: ChangeLog
  url: https://developers.kudosity.com/changelog
- type: ChangeLog
  url: changelog/kudosity-changelog.yml
- type: Plans
  url: plans/kudosity-plans.yml
- type: Packages
  url: packages/kudosity-packages.yml
- type: Postman
  url: https://developers.kudosity.com/reference/postman
- type: Integrations
  url: https://kudosity.com/integrations
- type: AgentSkills
  url: https://developers.kudosity.com/docs/claude-plugin
- type: AgentSkills
  url: https://developers.kudosity.com/docs/copilot-extension
- type: AgentSkills
  url: https://developers.kudosity.com/docs/gemini-extension
- type: AgentSkills
  url: https://developers.kudosity.com/docs/openclaw-plugin
- type: AgentSkills
  url: https://developers.kudosity.com/docs/sms-action
- type: SourceCode
  url: https://github.com/kudosity/ai-agent-examples
- type: SourceCode
  url: https://github.com/kudosity/mcp