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Constant Contact

Constant Contact API

Yes. Constant Contact publishes a public REST API. See developer.constantcontact.com for pricing details.

MCP also available
Public REST API documentedAgent-readiness 5/10
Data from Buddy's database, auto-rechecked weekly

What is the Constant Contact API?

The Constant Contact API is a public REST interface to campaigns, contacts, segments, and automation workflows. Auth method is documented on the official API reference. No official SDK was detected, so most teams hit it directly with HTTP clients.

Typical builds: scripts that sync subscribers from your product database, engagement dashboards that combine open rate with revenue attribution, and cron jobs that pause underperforming campaigns automatically.

For agent workflows specifically, the community MCP server is usually less code than the REST API. The API still wins for scheduled jobs, dashboards, and anything outside an LLM-driven flow.

For the broader picture: Constant Contact review, full pricing breakdown, .

HOOK IT TO YOUR STACK

Real Constant Contact API calls you'll write

constant-contact-apirest
#List campaigns from the last 30 days
GET/v3/campaigns?since=30d&fields=name,open_rate,clicks
200 OK · 12 campaigns
Black Friday Teaseropen 42.1%
Product launchopen 38.5%
Weekly digest #12open 27.0%
Welcome flow step 2open 61.3%
constant-contact-apirest
#Create a new automation programmatically
POST/v3/automations
201 Created · automation_id: aut_8x
Statusdraft
Steps configured0
Estimated audience2,847
Push steps via PUT /automations/{id}/steps.
constant-contact-apirest
#Add a contact and tag them in one call
POST/v3/contacts
201 Created · contact_id: c_4f12
Lifecycle stagesubscriber
Tags applied1
Triggers firedwelcome-series
TMB SCORE FOR Constant ContactAgent fit: 5/10
Read review →

Endpoints illustrative. Confirm exact paths against the live API docs before integrating.

How much does the Constant Contact API actually cost?

Verify on docs

Constant Contact publishes an API, but per-tier gating wasn't extracted automatically.

  • Most likely scenario: API access is either included in all paid plans, or it's gated to higher tiers and we need to verify on the live docs page.
  • Until verified, treat the question "which plan unlocks the API" as open. Don't budget on the assumption it's free with the cheapest paid plan.

Constant Contact subscription pricing

PlanMonthlyAnnual / mo
Lite$12
Standard$35
Premium$80
TeamsContact sales

⚠ Per-tier API gating not yet structured for Constant Contact. Confirm which plans unlock API access on the live docs.

Source: constantcontact.com/pricing. Verified 2026-06-07.

API at a glance

Auth method
SDK languages
OpenAPI spec
Webhooks
Structured outputs

Constant Contact also has an MCP server

If you're wiring Constant Contact into Claude / Cursor / Codex, the MCP server is usually less code than the REST API.

See Constant Contact MCP page

What you can build with the Constant Contact API

Three personas, three different shapes of build. Pick the row that matches how you actually ship.

SOLO DEV / FOUNDER

Glue Constant Contact into your daily workflow

  • Pull a digest of campaign performance into your morning Slack
  • Trigger a one-off backfill when something looks off
  • Pipe data into your own SQLite for ad-hoc queries
Effort: A weekend, one Node or Python script
AGENCY / CONSULTANT

Sell Constant Contact reporting at scale

  • White-label Constant Contact data into client-branded dashboards
  • Run scheduled multi-account reports without logging into the Constant Contact UI
  • Cross-reference with the rest of the client's stack (CRM, analytics, ad spend)
Effort: 1-2 weeks, hits multi-tenant auth quickly
IN-HOUSE ENGINEER

Production pipelines for Constant Contact

  • Real-time sync into your warehouse on a cron
  • Custom alerts the dashboard's built-in alerting can't express
  • Backfill + idempotency handling for Constant Contact data older than the dashboard exposes
Effort: Multi-week project, expect rate-limit tuning

Quickstart template

# Starter template — endpoint paths and SDK package names come from
# the Constant Contact API docs: https://developer.constantcontact.com

curl -X GET "https://developer.constantcontact.com/<your-endpoint>" \
  -H "Authorization: Bearer $TOKEN" \
  -H "Accept: application/json" | jq .

Template only. Endpoint paths, exact base URL, and auth header format come from developer.constantcontact.com.

Limits and gotchas

  • No OpenAPI spec — you write typed clients by hand or use a third-party generator on the docs HTML.
  • No official SDK detected. Plan on hitting the API directly with your HTTP client of choice.
  • Rate limits: always read the docs page before scaling — the published limit is usually lower than the practical one and overages can be expensive.
  • No-code fallback: Zapier and Make.com cover the common triggers if you want to skip writing API code for simple flows.
5/10

Agent-readiness verdict

Partial API access, limited agent integration. Constant Contact has a public API with documentation and a community MCP server, but lacks an official MCP, OpenAPI spec, and webhooks that agents need for reliable automation. The missing structured outputs and absent SDK support make it slow to wire into Claude or Cursor workflows.

MCP server availablePublic API with docs

Constant Contact API FAQ

Does Constant Contact have a public API?+
Yes — REST API at developer.constantcontact.com.
Should I use the API or the MCP server for Claude / Cursor / Codex?+
Prefer the MCP server for agent workflows — it's less code and pre-handles auth flows. Use the REST API for scheduled jobs, dashboards, and anything outside an LLM-driven flow.

Sources

Joonas Rotko
Joonas RotkoAuthor & Founder of That Marketing Buddy

10+ years in digital marketing. I review marketing software for AI-stack fit: real pricing, MCP and API support, and how cleanly each tool drops into an AI agent workflow, cross-checked against verified data and real user feedback.

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