Act! CRM website screenshot

Act! CRM

Act! is a CRM and marketing automation platform built for small and mid-sized businesses, providing contact and activity management, opportunity tracking, email marketing, and pipeline reporting in cloud (Act! Advantage) or on-premises (Act! Premium Desktop) editions. The Act! Web API is a JSON-based REST API that exposes contacts, companies, groups, opportunities, activities, tasks, notes, history, documents and tenant-defined custom entities across 410 operations, with OData v4 query options ($filter, $orderby, $top, $skip, $select, $expand) on collection reads, multipart batching at POST /api/$batch, a webhook registration API, and a published Swagger 2.0 specification. Authentication is a JWT bearer token minted at GET /authorize from HTTP Basic credentials plus an Act-Database-Name header. The API is deployed per database — either on Act! Premium Cloud or on the customer's own IIS server — so the base URL is per-tenant.

Act! CRM publishes 11 APIs on the APIs.io network, including Act! Web API, Activity Series API, Custom Entities API, and 8 more. Tagged areas include CRM, Marketing Automation, Contact Management, Sales, and Opportunity Management.

The Act! CRM catalog on APIs.io includes 1 event-driven AsyncAPI specification.

Act! CRM’s developer surface includes authentication, changelog, documentation, API reference, getting-started guide, support, pricing, and 24 more developer resources.

🌐 Visit website 📡 Source on GitHub
70.2/100 exemplar ▬ flat Agent 26/100 agent aware saas Full breakdown ↓
scored 2026-09-10 · rubric v0.20.0
AccessPaidFree trial
11 APIs
CRMMarketing AutomationContact ManagementSalesOpportunity ManagementODataSmall Business

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-09-10 · rubric v0.20.0
Composite quality — 70.2/100 · exemplar
Contract Quality 15.1 / 23
Developer Ergonomics 11.9 / 18
Access Clarity 16.6 / 18
Operational Transparency 7.1 / 12
Contract Governance 2.0 / 11
Discoverability 6.7 / 9
Create-or-Update Ergonomics 5.0 / 10
Agent readiness — 26/100 · agent aware
Machine-Readable Contract 18 / 18
Agentic Access Contract 0 / 10
Documented Reversibility 0 / 6
MCP Server 0 / 12
Machine-Readable Auth 10 / 10
Idempotency 0 / 9
Stable Error Semantics 8 / 8
Request/Response Examples 0 / 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
A2A Agent Card 0 / 8
Dry-Run / Simulate Mode 0 / 4
Delegated User Identity 0 / 6
Protected Resource Metadata 0 / 5
Registration Without a Human 0 / 6
Agentic Commerce Well-Known Document 0 / 5
Create-or-Update Ergonomics applies to this provider. This API accepts writes, so it carries 10 points of the composite. It is scored from the published contracts themselves: whether a caller can create-or-update in one call, whether the write accepts a key the caller already holds, and whether the response says which branch ran. Without that, every write needs a search-and-branch in front of it, and the first time that check is skipped a duplicate record is created. Scored against the observed mean rather than raw — a provider at the catalog average is unchanged by this facet, not penalised by it.
Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. Every facet and dimension name above is a link: it opens that measurement's own page — what it means, the exact checks that feed it, how the whole catalog distributes on it, and the providers at the top of it. This rating is computed from github.com/api-evangelist/act: open an issue to ask a question, or submit a pull request to add artifacts. Submit an artifact on GitHub — free → Manage your own listing — the Influence plan, $499/mo →

APIs 11

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

Act! Web API

JSON-based REST API for the Act! CRM database exposing contacts, companies, groups, opportunities, tasks, activity series, calendar, notes, history, documents, attachments, user...

Act! CRM Activity Series API

The ActivitySeries API from Act! CRM — 2 operation(s) for activityseries.

Act! CRM Custom Entities API

The CustomEntities API from Act! CRM — 2 operation(s) for customentities.

Act! CRM Document Types API

The DocumentTypes API from Act! CRM — 4 operation(s) for documenttypes.

Act! CRM History Types API

The HistoryTypes API from Act! CRM — 5 operation(s) for historytypes.

Act! CRM Marketing Automations API

The MarketingAutomations API from Act! CRM — 3 operation(s) for marketingautomations.

Act! CRM Metadata Info API

The MetadataInfo API from Act! CRM — 14 operation(s) for metadatainfo.

Act! CRM Secondary Contacts API

The SecondaryContacts API from Act! CRM — 3 operation(s) for secondarycontacts.

Act! CRM Supplemental Files API

The SupplementalFiles API from Act! CRM — 8 operation(s) for supplementalfiles.

Act! CRM Sync Data API

The SyncData API from Act! CRM — 4 operation(s) for syncdata.

Act! CRM Task Types API

The TaskTypes API from Act! CRM — 4 operation(s) for tasktypes.

Scroll for all 11

Open Collections 31

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

Act! Web API — ActivitySeries

OPEN COLLECTION

Act! Web API — Analytics

OPEN COLLECTION

Act! Web API — Calendar

OPEN COLLECTION

Act! Web API — Companies

OPEN COLLECTION

Act! Web API — Configurations

OPEN COLLECTION

Act! Web API — Contacts

OPEN COLLECTION

Act! Web API — Cors

OPEN COLLECTION

Act! Web API — CustomEntities

OPEN COLLECTION

Act! Web API — Database

OPEN COLLECTION

Act! Web API — DocumentTypes

OPEN COLLECTION

Act! Web API — Documents

OPEN COLLECTION

Act! Web API — Geographics

OPEN COLLECTION

Act! Web API — Groups

OPEN COLLECTION

Act! Web API — History

OPEN COLLECTION

Act! Web API — HistoryTypes

OPEN COLLECTION

Act! Web API — Import

OPEN COLLECTION

Act! Web API — MarketingAutomations

OPEN COLLECTION

Act! Web API — MetadataInfo

OPEN COLLECTION

Act! Web API — Notes

OPEN COLLECTION

Act! Web API — Opportunities

OPEN COLLECTION

Act! Web API — Preferences

OPEN COLLECTION

Act! Web API — Products

OPEN COLLECTION

Act! Web API — SecondaryContacts

OPEN COLLECTION

Act! Web API — SupplementalFiles

OPEN COLLECTION

Act! Web API — SyncData

OPEN COLLECTION

Act! Web API — System

OPEN COLLECTION

Act! Web API — TaskTypes

OPEN COLLECTION

Act! Web API — Tasks

OPEN COLLECTION

Act! Web API — Teams

OPEN COLLECTION

Act! Web API — Users

OPEN COLLECTION

Act! Web API — Webhooks

OPEN COLLECTION

Scroll for all 31

Pricing Plans 1

Published pricing tiers and plan structures.

Act Plans Pricing

4 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Act Rate Limits

0 limits

RATE LIMITS

Event Specifications 1

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

Act Webhooks

ASYNCAPI

Security Posture 4

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

Act Authentication

apiKey/http · 3 schemes

SECURITY

Act Domain Security

TLSv1.3 · DMARC

SECURITY

Act Vulnerability Disclosure

disclosure policy published

SECURITY

Act Trust Center

SOC 2, SOC 3, ISO 27001, PCI DSS, HIPAA, FedRAMP

SECURITY

Resources

Get Started 4

Portal, sign-up, and the first successful call

DeveloperPortal
DeveloperPortal
 GettingStarted
GettingStarted
 SignUp
SignUp
 Login
Login

Documentation 2

Reference material describing how the API behaves

Documentation
Documentation
 APIReference
APIReference

Agent Surfaces 2

MCP servers, agent skills, and machine-readable catalogs

LLMsTxt
LLMsTxt
 AgentSkill
AgentSkill

Design & Contract 2

Pagination, idempotency, versioning, errors, and events

Conformance
Conformance
 Lifecycle
Lifecycle

Build 2

SDKs, sample code, and the tooling you integrate with

Packages
Packages
 GitHubOrganization
GitHubOrganization

Access & Security 6

Authentication, authorization, and security posture

Authentication
Authentication
 DomainSecurity
DomainSecurity
 VulnerabilityDisclosure
VulnerabilityDisclosure
 Security
Security
 TrustCenter
TrustCenter
 Compliance
Compliance

Operate 5

Status, limits, changes, and where to get help

Deprecation
Deprecation
 StatusPage
StatusPage
 ChangeLog
ChangeLog
 Support
Support
 HelpCenter
HelpCenter

Commercial 4

Pricing, plans, and the legal terms of use

Plans
Plans
 Pricing
Pricing
 TermsOfService
TermsOfService
 PrivacyPolicy
PrivacyPolicy

Company 3

The organization behind the API

LinkedIn
LinkedIn
 Website
Website
 Blog
Blog

Other 1

Properties that don't map to a standard resource type

CapabilityMap
CapabilityMap

Source (apis.yml)

apis.yml Raw ↑ 
aid: act
name: Act! CRM
description: Act! is a CRM and marketing automation platform built for small and mid-sized businesses, providing contact and
  activity management, opportunity tracking, email marketing, and pipeline reporting in cloud (Act! Advantage) or on-premises
  (Act! Premium Desktop) editions. The Act! Web API is a JSON-based REST API that exposes contacts, companies, groups, opportunities,
  activities, tasks, notes, history, documents and tenant-defined custom entities across 410 operations, with OData v4 query
  options ($filter, $orderby, $top, $skip, $select, $expand) on collection reads, multipart batching at POST /api/$batch,
  a webhook registration API, and a published Swagger 2.0 specification. Authentication is a JWT bearer token minted at GET
  /authorize from HTTP Basic credentials plus an Act-Database-Name header. The API is deployed per database — either on Act!
  Premium Cloud or on the customer's own IIS server — so the base URL is per-tenant.
type: Index
deliveryModel:
  model: saas
  open_source: false
  commercial: true
  callable_host: true
  label: Hosted service · you call their endpoint
  confidence: high
  source:
  - openapi
  - pricing
  generated: '2026-08-28'
  method: derived
accessModel:
  pricing: paid
  onboarding: self-service
  trial: true
  try_now: false
  public: true
  label: Public docs, paid access
  confidence: high
  source:
  - https://www.act.com/developer/
  - https://apimta.act.com/act.web.api/
  - https://www.act.com/pricing/
  - https://www.act.com/trial/act/
  note: Documentation, the Swagger document and the anonymous GET /api/system route are all public and require no account.
    Actually calling the API requires an Act! subscription that includes API access — the API's own error codes 4031 (Subscription
    required) and 4032 (API access permission required) make the entitlement explicit. Act! documents the free Act! Premium
    trial as the route to API access.
  generated: '2026-08-13'
  method: searched
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/act.png
tags:
- CRM
- Marketing Automation
- Contact Management
- Sales
- Opportunity Management
- OData
- Small Business
tags_raw:
- CRM
- Customer Relationship Management
- Marketing Automation
- Contact Management
- Sales
- Opportunity Management
- OData
- Small Business
url: https://raw.githubusercontent.com/api-evangelist/act/refs/heads/main/apis.yml
created: '2026-05-11'
modified: '2026-08-13'
specificationVersion: '0.23'
apis:
- aid: act:web-api
  name: Act! Web API
  description: JSON-based REST API for the Act! CRM database exposing contacts, companies, groups, opportunities, tasks, activity
    series, calendar, notes, history, documents, attachments, users, teams, preferences, analytics and tenant-defined custom
    entities — 410 operations across 31 resource areas. Collection reads accept OData v4 query options; requests can be batched
    at POST /api/$batch; webhooks are registered through the API itself. The database schema is discoverable at runtime through
    the MetadataInfo operations because Act! databases are user-extensible. Authentication is a JWT bearer token obtained
    from GET /authorize with HTTP Basic credentials and an Act-Database-Name header.
  humanURL: https://www.act.com/developer/
  baseURL: https://apimta.act.com/act.web.api
  tags:
  - CRM
  - REST API
  - OData
  - OpenAPI
  - Webhook
  - Contact Management
  tags_raw:
  - CRM
  - REST API
  - OData
  - OpenAPI
  - Webhooks
  - Contact Management
  properties:
  - type: Documentation
    url: https://www.act.com/developer/
  - type: APIReference
    url: https://apimta.act.com/act.web.api/
  - type: Swagger
    url: https://apimta.act.com/act.web.api/swagger/docs/v1
  - type: Admin Guide
    url: https://www.act.com/uploads/docs/en/webapi_admin_guide.pdf
  - type: OpenAPI
    url: openapi/act-analytics-api-openapi.yml
  - type: OpenAPI
    url: openapi/act-calendar-api-openapi.yml
  - type: OpenAPI
    url: openapi/act-companies-api-openapi.yml
  - type: OpenAPI
    url: openapi/act-configurations-api-openapi.yml
  - type: OpenAPI
    url: openapi/act-contacts-api-openapi.yml
  - type: OpenAPI
    url: openapi/act-cors-api-openapi.yml
  - type: OpenAPI
    url: openapi/act-database-api-openapi.yml
  - type: OpenAPI
    url: openapi/act-documents-api-openapi.yml
  - type: OpenAPI
    url: openapi/act-geographics-api-openapi.yml
  - type: OpenAPI
    url: openapi/act-groups-api-openapi.yml
  - type: OpenAPI
    url: openapi/act-history-api-openapi.yml
  - type: OpenAPI
    url: openapi/act-import-api-openapi.yml
  - type: OpenAPI
    url: openapi/act-notes-api-openapi.yml
  - type: OpenAPI
    url: openapi/act-opportunities-api-openapi.yml
  - type: OpenAPI
    url: openapi/act-preferences-api-openapi.yml
  - type: OpenAPI
    url: openapi/act-products-api-openapi.yml
  - type: OpenAPI
    url: openapi/act-system-api-openapi.yml
  - type: OpenAPI
    url: openapi/act-tasks-api-openapi.yml
  - type: OpenAPI
    url: openapi/act-teams-api-openapi.yml
  - type: OpenAPI
    url: openapi/act-users-api-openapi.yml
  - type: OpenAPI
    url: openapi/act-webhooks-api-openapi.yml
  - type: Overlay
    url: overlays/act-web-api-overlay.yaml
  - type: Webhooks
    url: asyncapi/act-webhooks.yml
  - type: Conventions
    url: conventions/act-conventions.yml
  - type: ErrorCatalog
    url: errors/act-problem-types.yml
  - type: RateLimits
    url: rate-limits/act-rate-limits.yml
  - type: DataModel
    url: data-model/act-data-model.yml
  - type: Sandbox
    url: sandbox/act-sandbox.yml
  - type: X-MCPServerCandidate
    url: mcp/act-mcp.yml
    note: 'Renamed from MCPServer 2026-09-03 (roadmap#247): the manifest self-describes as status: candidate — a tool list
      derived from the published API contracts, not an existing server. The scorer already read the manifest and reported
      mcp_server correctly; the MCPServer type was crediting the artifact-type surfaces with a server that does not exist.'
- aid: act:act-activityseries-api
  name: Act! CRM Activity Series API
  description: The ActivitySeries API from Act! CRM — 2 operation(s) for activityseries.
  humanURL: https://www.act.com/developer/
  baseURL: https://apimta.act.com/act.web.api
  tags:
  - ActivitySeries
  properties:
  - type: OpenAPI
    url: openapi/act-activityseries-api-openapi.yml
- aid: act:act-customentities-api
  name: Act! CRM Custom Entities API
  description: The CustomEntities API from Act! CRM — 2 operation(s) for customentities.
  humanURL: https://www.act.com/developer/
  baseURL: https://apimta.act.com/act.web.api
  tags:
  - Custom Entities
  tags_raw:
  - CustomEntities
  properties:
  - type: OpenAPI
    url: openapi/act-customentities-api-openapi.yml
- aid: act:act-documenttypes-api
  name: Act! CRM Document Types API
  description: The DocumentTypes API from Act! CRM — 4 operation(s) for documenttypes.
  humanURL: https://www.act.com/developer/
  baseURL: https://apimta.act.com/act.web.api
  tags:
  - Document Types
  tags_raw:
  - DocumentTypes
  properties:
  - type: OpenAPI
    url: openapi/act-documenttypes-api-openapi.yml
- aid: act:act-historytypes-api
  name: Act! CRM History Types API
  description: The HistoryTypes API from Act! CRM — 5 operation(s) for historytypes.
  humanURL: https://www.act.com/developer/
  baseURL: https://apimta.act.com/act.web.api
  tags:
  - HistoryTypes
  properties:
  - type: OpenAPI
    url: openapi/act-historytypes-api-openapi.yml
- aid: act:act-marketingautomations-api
  name: Act! CRM Marketing Automations API
  description: The MarketingAutomations API from Act! CRM — 3 operation(s) for marketingautomations.
  humanURL: https://www.act.com/developer/
  baseURL: https://apimta.act.com/act.web.api
  tags:
  - MarketingAutomations
  properties:
  - type: OpenAPI
    url: openapi/act-marketingautomations-api-openapi.yml
- aid: act:act-metadatainfo-api
  name: Act! CRM Metadata Info API
  description: The MetadataInfo API from Act! CRM — 14 operation(s) for metadatainfo.
  humanURL: https://www.act.com/developer/
  baseURL: https://apimta.act.com/act.web.api
  tags:
  - MetadataInfo
  properties:
  - type: OpenAPI
    url: openapi/act-metadatainfo-api-openapi.yml
- aid: act:act-secondarycontacts-api
  name: Act! CRM Secondary Contacts API
  description: The SecondaryContacts API from Act! CRM — 3 operation(s) for secondarycontacts.
  humanURL: https://www.act.com/developer/
  baseURL: https://apimta.act.com/act.web.api
  tags:
  - SecondaryContacts
  properties:
  - type: OpenAPI
    url: openapi/act-secondarycontacts-api-openapi.yml
- aid: act:act-supplementalfiles-api
  name: Act! CRM Supplemental Files API
  description: The SupplementalFiles API from Act! CRM — 8 operation(s) for supplementalfiles.
  humanURL: https://www.act.com/developer/
  baseURL: https://apimta.act.com/act.web.api
  tags:
  - SupplementalFiles
  properties:
  - type: OpenAPI
    url: openapi/act-supplementalfiles-api-openapi.yml
- aid: act:act-syncdata-api
  name: Act! CRM Sync Data API
  description: The SyncData API from Act! CRM — 4 operation(s) for syncdata.
  humanURL: https://www.act.com/developer/
  baseURL: https://apimta.act.com/act.web.api
  tags:
  - Sync Data
  tags_raw:
  - SyncData
  properties:
  - type: OpenAPI
    url: openapi/act-syncdata-api-openapi.yml
- aid: act:act-tasktypes-api
  name: Act! CRM Task Types API
  description: The TaskTypes API from Act! CRM — 4 operation(s) for tasktypes.
  humanURL: https://www.act.com/developer/
  baseURL: https://apimta.act.com/act.web.api
  tags:
  - Task Types
  tags_raw:
  - TaskTypes
  properties:
  - type: OpenAPI
    url: openapi/act-tasktypes-api-openapi.yml
common:
- type: CapabilityMap
  url: capabilities/act-capability-edges.yml
  name: Act! CRM Business Capability Map
- type: Authentication
  url: authentication/act-authentication.yml
- type: DomainSecurity
  url: security/act-domain-security.yml
- type: VulnerabilityDisclosure
  url: security/act-vulnerability-disclosure.yml
- type: Security
  url: security/act-vulnerability-disclosure.yml
- type: TrustCenter
  url: security/act-trust-center.yml
- type: Compliance
  url: security/act-trust-center.yml
- type: Conformance
  url: conformance/act-conformance.yml
- type: Lifecycle
  url: lifecycle/act-lifecycle.yml
- type: Deprecation
  url: https://www.act.com/obsolescence-policy/
- type: StatusPage
  url: https://status.act.com/
- type: ChangeLog
  url: changelog/act-changelog.yml
- type: Plans
  url: plans/act-plans-pricing.yml
- type: Packages
  url: packages/act-packages.yml
- type: LLMsTxt
  url: llms/act-llms.txt
- type: AgentSkill
  url: skills/_index.yml
- type: LinkedIn
  url: https://www.linkedin.com/company/actsoftware
- type: Website
  url: https://www.act.com
- type: DeveloperPortal
  url: https://www.act.com/developer/
- type: Documentation
  url: https://www.act.com/developer/
- type: APIReference
  url: https://apimta.act.com/act.web.api/
- type: GettingStarted
  url: https://www.act.com/resources/getting-started/act-cloud/
- type: Support
  url: https://support.act.com/
- type: HelpCenter
  url: https://help.act.com/
- type: GitHubOrganization
  url: https://github.com/Swiftpage
- type: Pricing
  url: https://www.act.com/pricing/
- type: SignUp
  url: https://www.act.com/trial/act/
- type: Login
  url: https://my.act.com/en-us/myact
- type: TermsOfService
  url: https://www.act.com/legal/terms-of-service/
- type: PrivacyPolicy
  url: https://www.act.com/legal/privacy-policy/
- type: Blog
  url: https://www.act.com/blog/
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
x-enrichment:
  date: '2026-08-13'
  status: enriched
  artifacts_added: 56
  pass: local-v1

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