Constant Contact
Constant Contact is a small-business email and digital marketing platform offering email campaigns, automation, SMS, contact management, surveys, and events. The Constant Contact V3 API is a REST + JSON, OAuth2-protected service published at api.cc.email/v3 covering accounts, contacts, lists, tags, custom fields, segments, email campaigns, A/B tests, schedules and tests, bulk activities (CSV/JSON import, export, list and tag mutations), events with registration and check-in, reporting, and partner provisioning.
Reference-quality API operations across every facet — a rich contract, published governance, transparent operations, and machine-readable commercial terms.
API Evangelist profiles Constant Contact the way a machine reads it — 69 machine-readable artifacts across 2 APIs, pulled from the provider's own public surface and indexed so a developer, an analyst, or an AI agent can evaluate it against every other provider on the network.
Every provider in the network is reduced to the same set of machine-readable artifacts — OpenAPI contracts, event specifications, GraphQL schemas, runnable collections, pricing and rate-limit signals, security posture, OAuth scopes, and the agent surfaces (MCP servers and skills) that let software drive the API on its own. We profile them because the interface is the part of a company you can actually inspect: it is a truer signal of what a provider does than any marketing page. From those artifacts we compute the Kin Score — Constant Contact scores 68.7/100 (exemplar), with a separate agent-readiness read of 34/100 (agent ready). The full breakdown is below, followed by every artifact we hold — each card links through to its machine-readable definition on apis.io.
Kin Score
This is the API Evangelist rating — a single, repeatable read computed from the artifacts on this page. Green fill is points earned; the red track is points possible, so every bar shows earned-versus-possible at a glance. Every facet and dimension name is a link: it opens that measurement's page on APIs.io, where the rating runs across the whole catalog — the exact checks that feed it, how every profiled provider distributes on it, and who is at the top of it.
Kin Score
How this is scored →scored 2026-09-08 · rubric v0.20.0
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</a>[](https://providers.apievangelist.com/providers/constant-contact/)<!-- Kin Score · API Evangelist -->
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title="Constant Contact on API Evangelist — API profile and Kin Score">
<img src="https://apis.io/badge/constant-contact/card.svg"
alt="Constant Contact Kin Score — API readiness rating by API Evangelist" width="340" height="120" loading="lazy">
</a>More shapes, themes and sizes → · Score as JSON · How badges work
How we profile Constant Contact
Each block below is one kind of artifact we hold for Constant Contact. For each we say what it is and why it earns a place in the profile, then list every one we've indexed — capped at two rows, scroll within the panel for the rest.
APIs 19
Each API is captured as its own OpenAPI definition — every operation, parameter, and response. This is the single most useful machine-readable description of what an API does, and it's what lets us score, lint, mock, and generate against it without asking the provider for anything.
Individual APIs this provider publishes, each with its own machine-readable definition.
Constant Contact Account Services API
Use the account endpoints and methods to get account information.
Constant Contact Bulk Activities API
Bulk activities endpoints are used to manage large numbers of contacts, lists, and tags.
Constant Contact Contact Lists API
Endpoints and methods to get, create, delete, and update one or more contact lists.
Constant Contact Contact Tags API
Endpoints and methods to get, create, delete, and update one or more contact tags.
Constant Contact Contacts API
Endpoints and methods to get, create, delete, and update one or more contacts.
Constant Contact Contacts Custom Fields API
Endpoints and methods to get, create, delete, and update on one or more custom fields.
Constant Contact Contacts Reporting API
Contact reporting endpoints are used to gather activity reports for campaigns sent to a contact.
Constant Contact Email Campaigns AB Tests API
Use email campaigns A/B Test endpoints and methods to get, create, delete and update A/B tests.
Constant Contact Email Campaigns API
Use email campaign endpoints and methods to get, create, and update email campaigns.
Constant Contact Email Reporting API
Use the email reporting endpoints and methods to get reporting data for email campaigns you sent to contacts.
Constant Contact Email Scheduling API
Use email scheduling endpoints and methods to schedule an email campaign activity, unschedule an email campaign activity, and GET schedule information.
Constant Contact Events API
Endpoints and methods used to create and manage events.
Constant Contact Landing Pages Reporting API
Use landing pages reporting endpoints and methods to get reporting data about how a contact interacted with a campaign activity.
Constant Contact Segments API
Use segments to target a subset of your contacts that are most likely to engage with a particular campaign.
Constant Contact SMS Reporting API
Use SMS reporting endpoints and methods to get reporting data about SMS campaigns.
Constant Contact Technology Partners API
Use partner endpoints to manage client Constant Contact accounts under your partner account.
Constant Contact Technology Partners Webhooks API
Use partner webhooks to subscribe to billing event notifications from Constant Contact.
Constant Contact Automations API
Use the automation endpoints and methods to manage automation campaigns
Constant Contact Social API
The Social API from Constant Contact — 4 operation(s) for social.
Scroll within the panel for all 19 ·
Open Collections 19
Open, tool-agnostic collections carry the same runnable value as Postman without locking you to one client — the portable, forkable form of the same exercise.
Open, tool-agnostic API collections (OpenAPI-derived and Bruno).
API Collection
OPEN COLLECTIONAppConnect V3 Account Services API
OPEN COLLECTIONAppConnect V3 Account Services Bulk Activities API
OPEN COLLECTIONAppConnect V3 Account Services Contact Lists API
OPEN COLLECTIONAppConnect V3 Account Services Contact Tags API
OPEN COLLECTIONAppConnect V3 Account Services Contacts API
OPEN COLLECTIONAppConnect V3 Account Services Contacts Custom Fields API
OPEN COLLECTIONAppConnect V3 Account Services Contacts Reporting API
OPEN COLLECTIONAppConnect V3 Account Services Email Campaigns AB Tests API
OPEN COLLECTIONAppConnect V3 Account Services Email Campaigns API
OPEN COLLECTIONAppConnect V3 Account Services Email Reporting API
OPEN COLLECTIONAppConnect V3 Account Services Email Scheduling API
OPEN COLLECTIONAppConnect V3 Account Services Events API
OPEN COLLECTIONAppConnect V3 Account Services Landing Pages Reporting API
OPEN COLLECTIONAppConnect V3 Account Services Segments API
OPEN COLLECTIONAppConnect V3 Account Services SMS Reporting API
OPEN COLLECTIONAppConnect V3 Account Services Technology Partners API
OPEN COLLECTIONAppConnect V3
OPEN COLLECTIONScroll within the panel for all 19 ·
GraphQL 1
Where a provider ships GraphQL, the schema is the contract. We profile it alongside the REST surface so the whole interface is legible in one place.
GraphQL schemas published by this provider.
Constant Contact GraphQL Schema
This directory contains a conceptual GraphQL schema for the Constant Contact V3 API. Constant Contact is a small-business email and digital marketing platform offering email cam...
GRAPHQLPricing Plans 1
Pricing is part of the interface. Machine-readable plans tell you what a tier costs and includes before you commit — one of the things the Kin Score reads for access clarity — renamed from commercial clarity in rubric 0.12, because a free statutory interface has access terms and no commercial ones.
Published pricing tiers and plan structures.
Rate Limits 1
Rate limits are the difference between a demo that works and a production integration that doesn't fall over. Publishing them is an operational-transparency signal — and a hard requirement for any agent that plans its own throughput.
Documented rate limits and quota policies.
Constant Contact Rate Limits
RATE LIMITSFinOps 1
Cost, billing, and metering signals let a buyer model the financial operations of an API before it's live. We profile them for the same reason we profile pricing: the money is part of the contract.
Cost, billing, and metering signals for API financial operations.
Constant Contact Finops
FINOPSFeatures 16
The notable capabilities this provider advertises, captured as structured features so they can be searched and compared instead of read one landing page at a time.
Notable capabilities this provider offers.
Scroll within the panel for all 16 ·
Event Specifications 1
Not every API is request/response. AsyncAPI describes the event-driven and streaming side — the webhooks and channels — so the asynchronous half of the interface is documented the same way the synchronous half is.
AsyncAPI definitions for this provider's event-driven and streaming APIs.
Constant Contact Webhooks
ASYNCAPISemantic Vocabularies 1
JSON-LD contexts give the data shared meaning across APIs. We profile them because semantics are what let a machine reconcile 'customer' here with 'customer' somewhere else.
JSON-LD contexts and semantic vocabularies used across these APIs.
Constant Contact Context
JSON-LDSpectral Rules 2
Governance rulesets we run against this provider's specs — the automated checks behind parts of the score. Profiling them makes the quality bar explicit and re-runnable, not a matter of opinion.
Constant Contact API Rules
SPECTRALConstant Contact API Rules
SPECTRALJSON Schema 2
Standalone JSON Schema definitions describe the data models behind the API. We profile them so the shapes are validatable on their own — useful long after a single request is forgotten.
Standalone JSON Schema definitions for this provider's data models.
Constant Contact Email Campaign
JSON SCHEMAConstant Contact Contact
JSON SCHEMAJSON Structure 1
JSON Structure captures the data shapes in a form built for tooling — a complement to JSON Schema that keeps the model machine-legible.
JSON Structure definitions describing this provider's data shapes.
Constant Contact Structure
JSON STRUCTURESecurity Posture 2
Authentication, domain security, vulnerability disclosure, and trust-center signals — the evidence that a provider takes security seriously enough to document it. We profile it because you can't govern what you can't see.
Authentication, domain security, vulnerability disclosure, and trust-center signals.
Scopes 1
OAuth scopes are the vocabulary of least-privilege access. Profiling them shows exactly what an integration — or an agent acting on a user's behalf — is allowed to do.
OAuth scopes governing access to this provider's APIs.
Agentic Access 1
An x-agentic-access contract marks which operations are safe for an agent to run on its own and which need a human in the loop. It is the difference between an API an agent can use and one it can use safely.
Recommended x-agentic-access execution contracts for AI agents.
Resources
Every other property we hold for Constant Contact — documentation, portals, status pages, policies, and corporate surface — grouped by the job it does, following the integrator's arc from getting started to running in production.
Get Started 2
Portal, sign-up, and the first successful call
Documentation 5
Reference material describing how the API behaves
Agent Surfaces 3
MCP servers, agent skills, and machine-readable catalogs
Design & Contract 8
Pagination, idempotency, versioning, errors, and events
Scroll within the panel for all 8 ·
Build 3
SDKs, sample code, and the tooling you integrate with
Access & Security 4
Authentication, authorization, and security posture
Operate 6
Status, limits, changes, and where to get help
Commercial 4
Pricing, plans, and the legal terms of use
Company 3
The organization behind the API
Other 1
Properties that don't map to a standard resource type
← All providers · Data indexed from github.com/api-evangelist/constant-contact · machine-readable index on apis.io
This is an independent, third-party profile of Constant Contact, published by API Evangelist. We do not operate, host, resell, or support these APIs, and we are not affiliated with or endorsed by the company unless stated above. Everything here is built from publicly available information — the company's own site, developer portal, documentation, public repositories, and the specifications it publishes for public use. Nothing is obtained by breaching a system, defeating an access control, or using credentials.
The Kin Score and Agent Readiness rating are independently calculated assessments of a company's public API artifacts, scored against a published rubric. They are not certifications, endorsements, security assessments, or audits.
Corrections, re-scores, and removal are free — no partnership or purchase required, and you do not need to justify the request. A removed company is recorded as unrated, never scored zero for having asked. Acknowledgement within one business day; removal within two.
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