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Selzy

Selzy API

Yes. Selzy publishes a public REST API.

Public REST API documentedAgent-readiness 4/10
Data from Buddy's database, auto-rechecked weekly

What is the Selzy API?

The Selzy 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, the API is the path of least resistance until Selzy ships an MCP server. ask Claude which segments are growing fastest this quarter, have Cursor draft a 3-step welcome series for new ebook signups, and let Codex re-engage cold subscribers with personalised subject lines.

For the broader picture: Selzy review, full pricing breakdown, .

HOOK IT TO YOUR STACK

Real Selzy API calls you'll write

selzy-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%
selzy-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.
selzy-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 SelzyAgent fit: 4/10
Read review →

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

How much does the Selzy API actually cost?

Verify on docs

Selzy 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.

API at a glance

API docs
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Auth method
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SDK languages
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OpenAPI spec
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Webhooks
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Structured outputs
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What you can build with the Selzy API

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

SOLO DEV / FOUNDER

Glue Selzy 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 Selzy reporting at scale

  • White-label Selzy data into client-branded dashboards
  • Run scheduled multi-account reports without logging into the Selzy 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 Selzy

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

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 cover the common triggers if you want to skip writing API code for simple flows.
4/10

Agent-readiness verdict

Not recommended for agent workflows. Selzy lacks any MCP server, public API documentation, webhooks, or structured output support, making it impossible to integrate with Claude or similar agent tools. The absence of documented API access is the core blocker for programmatic automation.

Selzy API FAQ

Does Selzy have a public API?+
Not documented publicly as of the last check. Some tools expose private/partner APIs — contact sales if you need programmatic access.

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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