aid: kartra
name: Kartra
description: >-
  Kartra is an all-in-one online business platform operated by Kartra, Inc. of
  Las Vegas, Nevada, that bundles landing pages and funnels, email marketing with automation sequences,
  checkouts and recurring billing, membership sites and courses, video hosting,
  calendars and booking, helpdesks, affiliate management and lead scoring into a
  single subscription. Its developer surface is three distinct things: an
  inbound API that is a single form-encoded POST endpoint at
  https://app.kartra.com/api driven by 29 documented `cmd` values and scoped to
  exactly one lead per call; an outbound API that POSTs 24 JSON lead and
  commerce events to URLs configured in the account; and an IPN system that
  POSTs six payment-lifecycle notifications as flat form variables. Kartra
  publishes no OpenAPI, no SDK in any language, no signed webhooks and no
  idempotency contract, and it returns HTTP 200 for every outcome including
  authentication failure — the numeric `type` field in the response body is the
  real error signal.
image: https://kartra.com/wp-content/uploads/2024/06/Kartra-logo-icon-blue-transparent.png
url: https://raw.githubusercontent.com/api-evangelist/kartra/refs/heads/main/apis.yml
x-type: company
x-source: harvest:marketing-integration-graph
x-tier: enriched
x-tier-reason: enrichment-pipeline
specificationVersion: '0.20'
created: '2026-08-12'
modified: '2026-08-12'
tags:
- Company
- Marketing Automation
- Email Marketing
- CRM
- Contacts
- E-Commerce
- Payments
- Subscriptions
- Membership
- Landing Pages
- Webhooks
- SaaS
apis:
- aid: kartra:kartra-api
  name: Kartra API
  description: >-
    Kartra's inbound developer API. One endpoint, POST only, form-encoded, with
    the operation selected by `actions[].cmd`. Twenty-nine documented commands
    cover leads, tags, lists, automation sequences, custom fields, lead scoring,
    pages, calendar bookings, payment transactions and recurring subscriptions.
    Every call carries three credentials in the body — the developer's `app_id`
    plus the end user's `api_key` and `api_password` — and acts on exactly one
    lead. Rate limited to 20 calls per second per App.
  humanURL: https://support.kartra.com/en/collections/19655232-developers
  baseURL: https://app.kartra.com/api
  tags:
  - Marketing Automation
  - Contacts
  - Email Marketing
  - Payments
  - Subscriptions
  properties:
  - type: Documentation
    url: https://support.kartra.com/en/collections/19655232-developers
  - type: APIReference
    url: https://support.kartra.com/en/articles/15369013-connecting-to-the-api
  - type: GettingStarted
    url: https://support.kartra.com/en/articles/15369011-activating-your-app
  - type: Authentication
    url: authentication/kartra-authentication.yml
  - type: Conventions
    url: conventions/kartra-conventions.yml
  - type: ErrorCatalog
    url: errors/kartra-error-codes.yml
  - type: RateLimits
    url: rate-limits/kartra-rate-limits.yml
  - type: Sandbox
    url: sandbox/kartra-sandbox.yml
  - type: DataModel
    url: data-model/kartra-data-model.yml
  - type: Webhooks
    url: asyncapi/kartra-webhooks.yml
  - type: MCPServer
    url: mcp/kartra-mcp.yml
  - type: AgentSkill
    url: skills/_index.yml
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: Website
  url: https://kartra.com/
- type: DeveloperPortal
  url: https://support.kartra.com/en/collections/19655232-developers
- type: Documentation
  url: https://support.kartra.com/en/collections/19655232-developers
- type: APIReference
  url: https://support.kartra.com/en/articles/15369013-connecting-to-the-api
- type: GettingStarted
  url: https://support.kartra.com/en/articles/15369011-activating-your-app
- type: Support
  url: https://support.kartra.com/en/
- type: Blog
  url: https://kartra.com/learning-center/
- type: Pricing
  url: https://kartra.com/pricing/
- type: SignUp
  url: https://kartra.com/kartra-trial/
- type: Login
  url: https://app.kartra.com/login/
- type: TermsOfService
  url: https://kartra.com/terms-conditions/
- type: PrivacyPolicy
  url: https://kartra.com/privacy-policy/
- type: Compliance
  url: https://kartra.com/gdpr/
- type: StatusPage
  url: https://status.kartra.com/
- type: Integrations
  url: https://kartra.com/integrations-and-apis/
- type: Authentication
  url: authentication/kartra-authentication.yml
- type: Conventions
  url: conventions/kartra-conventions.yml
- type: ErrorCatalog
  url: errors/kartra-error-codes.yml
- type: RateLimits
  url: rate-limits/kartra-rate-limits.yml
- type: Plans
  url: plans/kartra-plans-pricing.yml
- type: Sandbox
  url: sandbox/kartra-sandbox.yml
- type: Lifecycle
  url: lifecycle/kartra-lifecycle.yml
- type: ChangeLog
  url: changelog/kartra-changelog.yml
- type: Webhooks
  url: asyncapi/kartra-webhooks.yml
- type: DataModel
  url: data-model/kartra-data-model.yml
- type: Packages
  url: packages/kartra-packages.yml
- type: Conformance
  url: conformance/kartra-conformance.yml
- type: MCPServer
  url: mcp/kartra-mcp.yml
- type: AgentSkill
  url: skills/_index.yml
- type: LLMsTxt
  url: llms/kartra-llms.txt
- type: DomainSecurity
  url: security/kartra-domain-security.yml
x-vouched-by:
- FirstPromoter
- Improvado
x-vouch-count: 2
x-pointer-omissions:
  note: >-
    Pointers deliberately NOT emitted, each backed by a probe or a search that
    found nothing. Recorded so a later pass does not re-litigate them.
  omitted:
  - {type: OpenAPI, reason: 'No OpenAPI, Swagger, GraphQL or AsyncAPI document found on kartra.com, app.kartra.com, api.kartra.com or support.kartra.com (probed 2026-08-12).'}
  - {type: SDKs, reason: 'No first-party client library on npm, PyPI, RubyGems, Packagist or crates.io. Kartra ships PHP cURL snippets, not an SDK. See packages/kartra-packages.yml.'}
  - {type: Idempotency, reason: 'Kartra documents no idempotency key, dedupe window or safe-retry contract. See conventions/kartra-conventions.yml.'}
  - {type: Deprecation, reason: 'No deprecation policy, no advance-notice window, no RFC 8594 Sunset/Deprecation headers. Removals are announced only after they ship.'}
  - {type: Security, reason: 'No vulnerability disclosure policy, no bug bounty, no security@ address. See security/kartra-vulnerability-disclosure.yml.'}
  - {type: WellKnown, reason: 'No /.well-known document served by Kartra — 404 on kartra.com, 403 on app/api hosts. The one 200 is Intercom''s security.txt on the vendor-hosted help centre and is not Kartra''s. See well-known/kartra-well-known.yml.'}
  - {type: SecurityTxt, reason: 'Same as WellKnown — the only security.txt reachable is Intercom''s, canonicalised to app.intercom.com.'}
  - {type: AgentCard, reason: '/.well-known/agent-card.json and /.well-known/agent.json probed on all four hosts; 404 or 403 everywhere. Nothing written, per the search-only rule.'}
  - {type: GitHubOrganization, reason: 'github.com/kartra does not exist (GitHub API 404). Kartra publishes no source.'}
  - {type: Postman, reason: 'No Kartra-published public Postman collection or workspace found.'}
  - {type: Roadmap, reason: 'No public roadmap; kartra.com/roadmap/ returns 404.'}
  - {type: TrustCenter, reason: 'trust.kartra.com 307s to app.kartra.com/dashboard via the wildcard subdomain catch-all; no trust centre exists.'}
  - {type: CLI, reason: No first-party CLI.}
x-enrichment:
  date: '2026-08-12'
  status: enriched
  artifacts_added: 23
  pass: local-v1