Ontraport

Ontraport is a business automation platform combining CRM, marketing automation, email marketing, landing pages, ecommerce, and membership site capabilities for small businesses and entrepreneurs. The platform unifies contact management, sales pipelines, payment processing, and visual automation campaigns in a single workspace. Ontraport's REST API exposes contacts, transactions, tags, sequences, forms, landing pages, and ecommerce objects using API-Key and Api-Appid header authentication, through a generic object interface where the record type is selected by an integer object type ID rather than by a path segment. Ontraport also runs a first-party remote MCP server at https://mcp.ontraport.com, publishing 47 tools across CRUD, query, management and commerce and authorizing them with OAuth 2.1 (PKCE, dynamic client registration) under a single mcp:tools scope.

Ontraport publishes 4 API contracts indexed on the APIs.io network, including Metadata API, Objects API, and 2 more. Tagged areas include CRM, Marketing Automation, Email Marketing, E-Commerce, and Landing Pages.

The Ontraport catalog on APIs.io includes 1 event-driven AsyncAPI specification and 1 Spectral governance ruleset.

Ontraport’s developer surface includes changelog, authentication, documentation, pricing, signup flow, support, engineering blog, and 36 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

59.5/100 strong ▬ flat Agent 55/100 agent native Front door AI 6/6 dominant Heartbeat 50/100 alive saas Full breakdown ↓
scored 2026-11-06 · rubric v0.27.0 · Show this score on your site →

AccessEnterprise

1 published contract 1 MCP Servers 4 Agent Skills

CRM Marketing Automation Email Marketing E-Commerce Landing PagesMembership SitesMCP AI Agents Payments Sales Automation

Kin Score

Kin Score How this is scored →
scored 2026-11-06 · rubric v0.27.0

Composite quality — 59.5/100 · strong

Contract Quality 10.5 / 19

Developer Ergonomics 10.1 / 15

Access Clarity 8.1 / 15

Operational Transparency 6.2 / 10

Contract Governance 2.9 / 9

Discoverability 5.6 / 8

Regulatory Posture 5.4 / 15

Create-or-Update Ergonomics 0.0 / 10

Agent readiness — 55/100 · agent native

Machine-Readable Contract 18 / 18

Agentic Access Contract 10 / 10

Documented Reversibility 0 / 6

MCP Server 12 / 12

Machine-Readable Auth 10 / 10

Idempotency 9 / 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 6 / 6

Protected Resource Metadata 5 / 5

Registration Without a Human 6 / 6

Agentic Commerce Well-Known Document 0 / 5

Pagination 0 / 5

Distinct Operations 3 / 3

MCP Tool Quality 6 / 6

Regulatory Posture applies to this provider. Its tags matched the Payments regime, so Regulatory Posture carries 15 points of the composite. If this regime is wrong for your business, say so on your provider repo — the applicability map is public and we will correct it.

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.

The six quality facets above are damped to 75 points between them, because the conditional facet above carries the other 25. That is why each facet's contribution is shown against a damped maximum: raising a quality facet moves the composite by 75% of its nominal weight, not 100%. The full arithmetic is at apis.io/rating/.

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Agent readiness — checks not met, largest first (exact, from this profile):

A2A Agent Card +8 pts — a2a/-a2a.yml manifest, graded on conformance.grade against A2A 1.0.0
Request/Response Examples +7 pts — share of operations carrying request/response examples; else an Examples / Code Samples link
Documented Reversibility +6 pts — a reversal operation in the contract, graded up when a window is documented too
Pagination +5 pts — share of collection GETs (an array, or one wrapped in data/items/results ...) that declare a page/limit/offset/cursor parameter, a Link header or a next/cursor field; na with no collection GETs
Agentic Commerce Well-Known Document +5 pts — a parsing /.well-known/ucp.json or acp.json declaring a version and at least one service, OR (0.27) a live x402 payment challenge from _data/x402-adoption.json — `self` when its endpoints are on the provider's own domain, `platform` when they are on a vendor's
Dry-Run / Simulate Mode +4 pts — OpenAPI: destructive operations expose a dry_run / simulate / preview / validate_only parameter

2 more unmet checks in the Agent Readiness table above.

Kin Score — facets with the most composite points still available (weight × headroom):

Contract Quality scores 56.1 — up to +11.0 composite points
Access Clarity scores 53.9 — up to +9.2 composite points
Contract Governance scores 31.8 — up to +8.2 composite points

Each check links to what satisfies it. Publish the artifact, or tell us where it already lives, and the score moves on the next scoring run.

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 the provider profile at artifacts.apis.io/ontraport/apis.yml: open an issue on github.com/api-evangelist/ontraport to ask a question or point us at an artifact you publish. Submit an artifact on GitHub — free → Manage your own listing — the Influence plan, $499/mo →

Markets this provider is in provisional

The Kin Score Market layer reads a provider inside its market: its position, and how deep its integrations go. Depth is only comparable within a position. Provisional and unweighted: not part of the Kin Score or agent readiness.

Market	Position	Depth	Registered MCP server	Declares compatibility
Browser Extension Stores (company-published Firefox add-ons; Chrome Web Store unreadable)	builds-on	34.1	-	-
Official SDKs on Packagist, pub.dev and Hex	builds-on	34.1	-	-

Registered MCP server and declares compatibility are report only — not weighted. Undeclared means we found nothing we can read, so there is no number: we never infer integrations.

Standards implemented 5

Standards this provider implements or carries. De facto ones are profiled and measured by the API Commons; formal ones come from the standards directory and are linked by the provider's own tags. The evidence column says how each claim was established — not that it was made.

Model Context Protocol (MCP)

measured — observed by APIs.io (verified)

OAuth 2.0 Protected Resource Metadata

measured — observed by APIs.io (verified)

Dynamic Client Registration

measured — observed by APIs.io (published)

OpenAPI

measured — observed by APIs.io (published)

OAuth 2.0

measured — observed by APIs.io (declared)

APIs 4

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

Ontraport REST API

RESTful API providing CRUD access to contacts, transactions, tags, sequences, forms, landing pages, and ecommerce objects. Authentication uses two headers, Api-Key and Api-Appid...

Ontraport Metadata API

Object metadata and field information.

Ontraport Objects API

Generic CRUD operations across Ontraport object types.

Ontraport MCP Server

Ontraport's first-party, hosted, remote MCP server. A streamable-HTTP endpoint an agent POSTs to directly at https://mcp.ontraport.com — there is no package to install and no lo...

Open Collections 3

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

Ontraport REST Metadata API

OPEN COLLECTION

Ontraport REST Metadata Objects API

OPEN COLLECTION

Ontraport REST API

OPEN COLLECTION

MCP Servers 1

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

Ontraport MCP Server

Ontraport ships a first-party, hosted, remote MCP server at https://mcp.ontraport.com. It is a streamable-HTTP MCP endpoint an agent POSTs to directly — there is no package to i...

MCP SERVER

Agent Skills 4

Packaged agent skills for driving this provider's APIs from an AI assistant.

ontraport-connect-mcp

AGENT SKILL

ontraport-page-a-collection

AGENT SKILL

ontraport-subscribe-webhook

AGENT SKILL

ontraport-upsert-contact

AGENT SKILL

Ontraport API pricing

Rate limits

: 180 60s

Rate-limit details →

Pricing Plans 1

Published pricing tiers and plan structures.

Ontraport Plans Pricing

0 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Ontraport Rate Limits

1 limits

RATE LIMITS

FinOps 1

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

Ontraport Finops

FINOPS

Event Specifications 1

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

Ontraport Webhooks

ASYNCAPI

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs.

Ontraport API Rules

50 rules · 48 errors 1 warnings 1 info

SPECTRAL

OpenAPI Overlays 2

Overlays applied on top of this provider's contracts. Each card says who wrote it: a document the provider publishes, or one API Evangelist derived or generated.

Ontraport Metadata Api Overlay

5 actions · documentation · ontraport-metadata-api-openapi.yml

GENERATED

Ontraport Objects Api Overlay

10 actions · documentation · ontraport-objects-api-openapi.yml

GENERATED

Security Posture 4

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

Ontraport Authentication

apiKey/oauth2 · 4 schemes

SECURITY

Ontraport Domain Security

TLSv1.3 · DMARC

SECURITY

Ontraport Vulnerability Disclosure

Hackerone

SECURITY

Ontraport Trust Center

PCI DSS, GDPR

SECURITY

Scopes 1

OAuth scopes governing access to this provider's APIs.

Ontraport Scopes

1 scope

1 scopes

SCOPES

Agentic Access 1

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

Ontraport Agentic Access

11 operations · 5 acting

AGENTIC

Resources

Get Started 4

Portal, sign-up, and the first successful call

Signup

Signup

DeveloperPortal

DeveloperPortal

GettingStarted

GettingStarted

Login

Documentation 2

Reference material describing how the API behaves

Documentation

Documentation

APIReference

APIReference

Agent Surfaces 5

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess

MCPServer

WellKnown

LLMsTxt

AgentSkill

Design & Contract 7

Pagination, idempotency, versioning, errors, and events

Conventions

Idempotency

ErrorCatalog

DataModel

Lifecycle

Conformance

Webhooks

Scroll for all 7

Build 6

SDKs, sample code, and the tooling you integrate with

ToolCrosswalk

ToolCrosswalk

Packages

Packages

SDKs

SDKs

PostmanCollection

PostmanCollection

OpenCollection

OpenCollection

GitHubOrganization

GitHubOrganization

Access & Security 5

Authentication, authorization, and security posture

OAuthScopes

Compliance

TrustCenter

DomainSecurity

Authentication

Operate 5

Status, limits, changes, and where to get help

RateLimits

ChangeLog

StatusPage

Support

HelpCenter

Commercial 4

Pricing, plans, and the legal terms of use

Plans

Pricing

TermsOfService

PrivacyPolicy

Company 5

The organization behind the API

LinkedIn

Website

Blog

About

Careers

Source (apis.yml)

aid: ontraport
name: Ontraport
description: Ontraport is a business automation platform combining CRM, marketing automation, email marketing, landing pages,
  ecommerce, and membership site capabilities for small businesses and entrepreneurs. The platform unifies contact management,
  sales pipelines, payment processing, and visual automation campaigns in a single workspace. Ontraport's REST API exposes
  contacts, transactions, tags, sequences, forms, landing pages, and ecommerce objects using API-Key and Api-Appid header
  authentication, through a generic object interface where the record type is selected by an integer object type ID rather
  than by a path segment. Ontraport also runs a first-party remote MCP server at https://mcp.ontraport.com, publishing 47
  tools across CRUD, query, management and commerce and authorizing them with OAuth 2.1 (PKCE, dynamic client registration)
  under a single mcp:tools scope.
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: enterprise
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Enterprise
  confidence: medium
  source:
  - authentication
  - scopes
  - rate-limits
  - security
  generated: '2026-11-06'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/ontraport.png
tags:
- CRM
- Marketing Automation
- Email Marketing
- E-Commerce
- Landing Pages
- Membership Sites
- MCP
- AI Agents
- Payments
- Sales Automation
tags_raw:
- CRM
- Marketing Automation
- Email Marketing
- Ecommerce
- Landing Pages
- Membership Sites
- MCP
- AI Agents
- Payments
- Sales Automation
url: https://raw.githubusercontent.com/api-evangelist/ontraport/refs/heads/main/apis.yml
created: '2026-05-11'
modified: '2026-08-13'
specificationVersion: '0.23'
x-enrichment:
  date: '2026-08-13'
  status: enriched
  artifacts_added: 26
  pass: local-v1
apis:
- aid: ontraport:rest-api
  name: Ontraport REST API
  description: RESTful API providing CRUD access to contacts, transactions, tags, sequences, forms, landing pages, and ecommerce
    objects. Authentication uses two headers, Api-Key and Api-Appid, on every request, with a 180-requests-per-minute rolling
    rate limit.
  humanURL: https://api.ontraport.com/doc/
  baseURL: https://api.ontraport.com/1
  tags:
  - CRM
  - Marketing Automation
  - Contacts
  - Transaction
  - Sequences
  tags_raw:
  - CRM
  - Marketing Automation
  - Contacts
  - Transactions
  - Sequences
  properties:
  - type: Documentation
    url: https://api.ontraport.com/doc/
  - type: Live Testing
    url: https://api.ontraport.com/live/
  - type: GitHub SDK
    url: https://github.com/Ontraport/SDK-PHP
- aid: ontraport:ontraport-metadata-api
  name: Ontraport Metadata API
  description: Object metadata and field information.
  humanURL: https://api.ontraport.com/doc/
  baseURL: https://api.ontraport.com/1
  tags:
  - Metadata
  properties:
  - type: OpenAPI
    url: openapi/ontraport-metadata-api-openapi.yml
  - type: Overlay
    url: overlays/ontraport-metadata-api-overlay.yaml
  - type: PostmanCollection
    url: collections/ontraport-metadata-api.postman_collection.json
  - type: OpenCollection
    url: collections/ontraport-metadata-api.opencollection.json
- aid: ontraport:ontraport-objects-api
  name: Ontraport Objects API
  description: Generic CRUD operations across Ontraport object types.
  humanURL: https://api.ontraport.com/doc/
  baseURL: https://api.ontraport.com/1
  tags:
  - Objects
  properties:
  - type: OpenAPI
    url: openapi/ontraport-objects-api-openapi.yml
  - type: Overlay
    url: overlays/ontraport-objects-api-overlay.yaml
  - type: PostmanCollection
    url: collections/ontraport-objects-api.postman_collection.json
  - type: OpenCollection
    url: collections/ontraport-objects-api.opencollection.json
- aid: ontraport:mcp
  name: Ontraport MCP Server
  description: 'Ontraport''s first-party, hosted, remote MCP server. A streamable-HTTP endpoint an agent POSTs to directly
    at https://mcp.ontraport.com — there is no package to install and no local stdio process. It is a translation layer over
    the Ontraport REST API exposing 47 tools across four categories: generic CRUD, Query (structural discovery, engagement
    tracking, account health), Manage (tags, subscriptions, relationships, tasks) and Commerce (invoicing, payments, refunds,
    subscriptions). Authorization is OAuth 2.1 with PKCE S256 against https://app.ontraport.com under a single mcp:tools scope,
    with an Api-Appid/Api-Key header fallback for platforms that cannot run the OAuth flow.'
  humanURL: https://ontraport.com/support/My-account/mcp-server
  baseURL: https://mcp.ontraport.com
  tags:
  - MCP
  - AI Agents
  - CRM
  - Marketing Automation
  - Commerce
  properties:
  - type: MCPServer
    url: mcp/ontraport-mcp.yml
  - type: ToolCrosswalk
    url: mcp/ontraport-tool-crosswalk.yml
  - type: OAuthScopes
    url: scopes/ontraport-scopes.yml
  - type: Documentation
    url: https://ontraport.com/support/My-account/mcp-server
  - type: WellKnown
    url: well-known/ontraport-well-known.yml
common:
- type: AgenticAccess
  url: agentic-access/ontraport-agentic-access.yml
- type: MCPServer
  url: mcp/ontraport-mcp.yml
- type: ToolCrosswalk
  url: mcp/ontraport-tool-crosswalk.yml
- type: WellKnown
  url: well-known/ontraport-well-known.yml
- type: OAuthScopes
  url: scopes/ontraport-scopes.yml
- type: Packages
  url: packages/ontraport-packages.yml
- type: SDKs
  url: packages/ontraport-packages.yml
- type: LLMsTxt
  url: llms/ontraport-llms.txt
- type: AgentSkill
  url: skills/_index.yml
- type: Conventions
  url: conventions/ontraport-conventions.yml
- type: Idempotency
  url: conventions/ontraport-conventions.yml
- type: ErrorCatalog
  url: errors/ontraport-problem-types.yml
- type: RateLimits
  url: rate-limits/ontraport-rate-limits.yml
- type: DataModel
  url: data-model/ontraport-data-model.yml
- type: ChangeLog
  url: changelog/ontraport-changelog.yml
- type: Lifecycle
  url: lifecycle/ontraport-lifecycle.yml
- type: StatusPage
  url: https://ontraportstatus.com
- type: Conformance
  url: conformance/ontraport-conformance.yml
- type: Compliance
  url: security/ontraport-trust-center.yml
- type: TrustCenter
  url: security/ontraport-trust-center.yml
- type: Webhooks
  url: asyncapi/ontraport-webhooks.yml
- type: Plans
  url: plans/ontraport-plans-pricing.yml
- type: PostmanCollection
  url: collections/ontraport.postman_collection.json
- type: OpenCollection
  url: collections/ontraport.opencollection.json
- type: DomainSecurity
  url: security/ontraport-domain-security.yml
- type: Authentication
  url: authentication/ontraport-authentication.yml
- type: LinkedIn
  url: https://www.linkedin.com/company/ontraport
- type: Website
  url: https://ontraport.com
- type: Documentation
  url: https://api.ontraport.com/doc/
- type: Pricing
  url: https://ontraport.com/pricing
- type: Signup
  url: https://ontraport.com/freetrial
- type: Support
  url: https://support.ontraport.com
- type: GitHubOrganization
  url: https://github.com/Ontraport
- url: https://ontraport.com/blog/feed/
  type: Blog
- type: APIReference
  url: https://api.ontraport.com/doc/
- type: DeveloperPortal
  url: https://ontraport.com/features/platform/api
- type: GettingStarted
  url: https://api.ontraport.com/doc/#authentication
- type: Login
  url: https://app.ontraport.com/login.php
- type: TermsOfService
  url: https://ontraport.com/legal
- type: PrivacyPolicy
  url: https://ontraport.com/legal
- type: HelpCenter
  url: https://ontraport.com/support
- type: About
  url: https://ontraport.com/about
- type: Careers
  url: https://ontraport.com/careers
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com

Ontraport API — frequently asked questions

Does Ontraport have an API?

Yes. APIs.io lists 4 APIs from Ontraport, including Ontraport REST API, Ontraport Metadata API and Ontraport Objects API, and 1 more.

Is there an OpenAPI specification for the Ontraport API?

Yes. APIs.io indexes 2 OpenAPI specifications for Ontraport, each linked for download from this page.

How do I authenticate with the Ontraport API?

Ontraport documents its authentication (apiKey/oauth2 · 4 schemes). The details are profiled on APIs.io as Ontraport Authentication.

Does Ontraport have an MCP server?

Yes. APIs.io lists 1 MCP server for Ontraport: Ontraport ships a first-party, hosted, remote MCP server at https://mcp.ontraport.com. It is a streamable-HTTP MCP endpoint an agent POSTs to directly — there is no package to install and no stdio pro

Is the Ontraport API ready for AI agents?

Ontraport has a Kin Score of 59.5 out of 100 (strong) and an Agent Readiness score of 54.9 (agent-native), scored by API Evangelist on 2026-11-06.

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