Act-On website screenshot

Act-On

Act-On Software is a cloud-based marketing automation platform used by B2B and B2C marketing teams for email marketing, lead generation and nurturing, landing pages and forms, website visitor tracking, lead scoring and segmentation, custom data, and campaign reporting. Act-On exposes a documented OAuth 2.0 REST API (base https://restapi.actonsoftware.com, versioned under /api/1) covering contacts and lists, segments, messages and email campaigns, media and creative assets, landing pages and forms, subscription management, custom data ingestion, and reporting. Added to the API Evangelist network from a Norwest Venture Partners portfolio lead and enriched from Act-On's public developer surface.

Act-On publishes 1 API on the APIs.io network. Tagged areas include Company, Marketing, Marketing Automation, Email Marketing, and Email.

Act-On’s developer surface includes documentation, API reference, getting-started guide, authentication, and 11 more developer resources.

🌐 Visit website 📡 Source on GitHub
22.2/100 emerging ▬ flat Agent 33/100 agent aware Full breakdown ↓
scored 2026-07-27 · rubric v0.5
AccessSelf serve
1 APIs 1 MCP Servers
CompanyMarketingMarketing AutomationEmail MarketingEmailMarketing TechnologyLead GenerationCampaign ManagementAPI

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-07-27 · rubric v0.5
Composite quality — 22.2/100 · emerging
Contract Quality 0.0 / 25
Developer Ergonomics 10.9 / 20
Commercial Clarity 0.0 / 20
Operational Transparency 2.1 / 13
Governance 0.0 / 12
Discoverability 9.3 / 10
Agent readiness — 33/100 · agent aware
Machine-Readable Contract 0 / 18
Agentic Access Contract 0 / 15
MCP Server 12 / 12
Machine-Readable Auth 10 / 10
Idempotency 0 / 9
Stable Error Semantics 8 / 8
Request/Response Examples 0 / 7
Rate-Limit Signaling 0 / 7
Typed Event Surface 0 / 6
Agent Skills 0 / 5
Well-Known Catalog 4 / 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/act-on: 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 1

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

Act-On REST API

OAuth 2.0 REST API for Act-On marketing automation — contacts and lists, segments, email messages and campaigns, media and creative assets, landing pages and forms, subscription...

MCP Servers 1

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

act-on-mcp.yml

MCP SERVER

Security Posture 2

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

Act On Authentication

1 scheme

SECURITY

Act On Domain Security

TLSv1.3 · HSTS · DNSSEC · DMARC

SECURITY

Resources

Get Started 2

Portal, sign-up, and the first successful call

DeveloperPortal
DeveloperPortal
 GettingStarted
GettingStarted

Documentation 2

Reference material describing how the API behaves

Documentation
Documentation
 APIReference
APIReference

Agent Surfaces 3

MCP servers, agent skills, and machine-readable catalogs

LLMsTxt
LLMsTxt
 MCPServer
MCPServer
 WellKnown
WellKnown

Design & Contract 4

Pagination, idempotency, versioning, errors, and events

Conventions
Conventions
 ErrorCatalog
ErrorCatalog
 Conformance
Conformance
 Lifecycle
Lifecycle

Access & Security 2

Authentication, authorization, and security posture

Authentication
Authentication
 DomainSecurity
DomainSecurity

Operate 1

Status, limits, changes, and where to get help

StatusPage
StatusPage

Company 1

The organization behind the API

Website
Website

Source (apis.yml)

apis.yml Raw ↑ 
aid: act-on
accessModel:
  pricing: unknown
  onboarding: self-serve
  trial: false
  try_now: false
  public: false
  label: Self-serve signup
  confidence: medium
  source:
  - authentication
  generated: '2026-07-22'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/act-on.png
name: Act-On
description: Act-On Software is a cloud-based marketing automation platform used by B2B and B2C marketing teams for email
  marketing, lead generation and nurturing, landing pages and forms, website visitor tracking, lead scoring and segmentation,
  custom data, and campaign reporting. Act-On exposes a documented OAuth 2.0 REST API (base https://restapi.actonsoftware.com,
  versioned under /api/1) covering contacts and lists, segments, messages and email campaigns, media and creative assets,
  landing pages and forms, subscription management, custom data ingestion, and reporting. Added to the API Evangelist network
  from a Norwest Venture Partners portfolio lead and enriched from Act-On's public developer surface.
url: https://raw.githubusercontent.com/api-evangelist/act-on/refs/heads/main/apis.yml
x-type: company
x-source: vc-portfolio
x-backed-by:
- norwest-venture-partners
x-tier: active
x-tier-reason: public-oauth2-rest-api
specificationVersion: '0.20'
created: '2026-07-17'
modified: '2026-07-17'
tags:
- Company
- Marketing
- Marketing Automation
- Email Marketing
- Email
- Marketing Technology
- Lead Generation
- Campaign Management
- API
apis:
- name: Act-On REST API
  description: OAuth 2.0 REST API for Act-On marketing automation — contacts and lists, segments, email messages and campaigns,
    media and creative assets, landing pages and forms, subscriptions, custom data, and reporting.
  humanURL: https://developer.act-on.com/reference/api-overview
  baseURL: https://restapi.actonsoftware.com
  properties:
  - type: Documentation
    url: https://developer.act-on.com
  - type: APIReference
    url: https://developer.act-on.com/reference/api-overview
  - type: Authentication
    url: authentication/act-on-authentication.yml
  - type: LLMsTxt
    url: llms/act-on-llms.txt
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: Website
  url: https://act-on.com
- type: DeveloperPortal
  url: https://developer.act-on.com
- type: Documentation
  url: https://developer.act-on.com
- type: APIReference
  url: https://developer.act-on.com/reference/api-overview
- type: GettingStarted
  url: https://developer.act-on.com/reference/request-a-developer-account
- type: StatusPage
  url: https://status.act-on.com
- type: LLMsTxt
  url: llms/act-on-llms.txt
- type: Authentication
  url: authentication/act-on-authentication.yml
- type: Conventions
  url: conventions/act-on-conventions.yml
- type: ErrorCatalog
  url: errors/act-on-problem-types.yml
- type: Conformance
  url: conformance/act-on-conformance.yml
- type: Lifecycle
  url: lifecycle/act-on-lifecycle.yml
- type: MCPServer
  url: mcp/act-on-mcp.yml
- type: WellKnown
  url: well-known/act-on-well-known.yml
- type: DomainSecurity
  url: security/act-on-domain-security.yml
x-enrichment:
  date: '2026-07-19'
  status: backfilled
  pass: local-v1
  note: backfilled from .gitignore signal + verified work evidence