# Act-On

**Canonical:** https://apis.io/providers/act-on/  
**Website:** https://act-on.com  
**APIs profiled:** 3

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 publishes four OpenAPI 3.1 documents through its developer portal covering 158 operations on one gateway host (https://api.actonsoftware.com, with an EU region at api-eu.actonsoftware.com): the legacy form-encoded /api/1 surface, the newer JSON Act-On Contacts layer at /ucl/v2, a transactional email endpoint at /ete/v1, and a separately versioned Custom Objects Service at /custom-objects/v1 that is in request-only beta. Authentication is OAuth 2.0 with password, refresh_token and authorization_code grants and no scopes. Act-On also ships a signed outgoing-webhook event surface with nineteen documented event types. Added to the API Evangelist network from a Norwest Venture Partners portfolio lead and enriched from Act-On's public developer surface.

## Kin Score — 60.2 / 100 (strong)

Scored 2026-08-17 under rubric 0.11.0. Trend: rising (+40.6 from 19.6).

| Facet | Score |
|---|---|
| Discoverability | 72.2 |
| Contract Quality | 60.8 |
| Governance | 11.5 |
| Operational Transparency | 71.1 |
| Developer Ergonomics | 67.4 |
| Commercial Clarity | 68.4 |

## Agent readiness — 55.0 (agent-ready)

| Dimension | Value |
|---|---|
| Spec Presence | yes |
| Agentic Access | no |
| MCP Server | derived |
| Auth Clarity | yes |
| Idempotency | no |
| Error Semantics | verified |
| OpenAPI Examples | partial |
| Rate Limit Signal | documented |
| Event Surface Described | yes |
| Agent Skills | yes |
| Well Known Catalog | no |
| Consent Identity | no |
| Agent Card | no |
| Dry Run Mode | yes |

## Access

Paid plan plus a free developer sandbox by request — onboarding: unknown, pricing: paid, trial: no (confidence: high).

## APIs (3)

- **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...
- **Act-On Custom Objects Service** — Separately versioned (3.4.3) Custom Data service for defining custom object schemas and fields, creating datasets, validating and ingesting CSV/JSON data, polling ingest jobs, a...
- **Act-On Outgoing Webhooks** — Outgoing webhook event surface — nineteen documented event types across contacts, consent, deliverability, lead scoring, subscriptions, automated programs, messaging, forms and ...

## MCP servers (1)

- **act-on-mcp.yml**

## Security (3)

- **Act On Authentication** — 3 schemes
- **Act On Domain Security** — TLSv1.3 · HSTS · DNSSEC · DMARC
- **Act On Trust Center** — ISO 27001, HIPAA, TX-RAMP, TRUSTe

## Plans (1)

- **Act On Plans Pricing**

## Tags

Company, Marketing, Marketing Automation, Email Marketing, Email, Marketing Technology, Lead Generation, Campaign Management, Customer Data, Webhooks, API

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Profiled by [API Evangelist](https://apievangelist.com) and published on [APIs.io](https://apis.io/providers/act-on/). Scores are computed from the provider's own public artifacts under a published rubric.