CommsHarbor
Transactional email and permission-based marketing infrastructure with tenant isolation, deliverability tracking, CRM, and multi-tenant governance. Self-describes as an agent-first HTTP API with a hosted MCP server.
CommsHarbor publishes 18 API contracts indexed on the APIs.io network, including Apis.json API, Auth API, Aws API, and 15 more. Tagged areas include Email, Transactional Email, Email Marketing, Communications, and Messaging.
The CommsHarbor catalog on APIs.io includes 1 event-driven AsyncAPI specification and 1 Spectral governance ruleset.
CommsHarbor’s developer surface includes pricing, authentication, and 20 more developer resources.
What this lets a business do 4
Business capabilities this provider's published APIs can perform, derived from its own contracts. Browse all capabilities →
Kin Score
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 |
|---|---|---|---|---|
| x402 Micropayments & Agentic Pay-per-Call | standard | 40.9 (thin) | 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 3
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.
APIs 18
Individual APIs this provider publishes, each with its own machine-readable definition.
CommsHarbor Apis.json API
The Apis.json API from CommsHarbor — 1 operation(s) for apis.json.
CommsHarbor Auth API
The Auth API from CommsHarbor — 3 operation(s) for auth.
CommsHarbor Aws API
The Aws API from CommsHarbor — 1 operation(s) for aws.
CommsHarbor Billing API
The Billing API from CommsHarbor — 1 operation(s) for billing.
CommsHarbor Comms Harbor API
The CommsHarbor API from CommsHarbor — 1 operation(s) for commsharbor.
CommsHarbor Context API
The Context API from CommsHarbor — 1 operation(s) for context.
CommsHarbor Credito API
The Credito API from CommsHarbor — 1 operation(s) for credito.
CommsHarbor Health API
The Health API from CommsHarbor — 1 operation(s) for health.
CommsHarbor Invitations API
The Invitations API from CommsHarbor — 1 operation(s) for invitations.
CommsHarbor MCP API
The Mcp API from CommsHarbor — 1 operation(s) for mcp.
CommsHarbor Me API
The Me API from CommsHarbor — 1 operation(s) for me.
CommsHarbor Messages API
The Messages API from CommsHarbor — 1 operation(s) for messages.
CommsHarbor Metrics API
The Metrics API from CommsHarbor — 1 operation(s) for metrics.
CommsHarbor Okf API
The Okf API from CommsHarbor — 1 operation(s) for okf.
CommsHarbor Organizations API
The Organizations API from CommsHarbor — 70 operation(s) for organizations.
CommsHarbor Platform API
The Platform API from CommsHarbor — 7 operation(s) for platform.
CommsHarbor Preferences API
The Preferences API from CommsHarbor — 2 operation(s) for preferences.
CommsHarbor .well Known API
The .well Known API from CommsHarbor — 1 operation(s) for .well known.
Scroll for all 18
MCP Servers 1
Model Context Protocol servers that expose these APIs to AI agents.
CommsHarbor MCP Server
MCP SERVERAgent Skills 4
Packaged agent skills for driving this provider's APIs from an AI assistant.
commsharbor-import-contacts-with-consent
AGENT SKILLcommsharbor-launch-marketing-campaign
AGENT SKILLcommsharbor-send-transactional-email
AGENT SKILLcommsharbor-verify-sending-domain
AGENT SKILLCommsHarbor API pricing
Prices published by CommsHarbor, read 2026-10-28 from commsharbor.com/api/billing.
| Plan | Price |
|---|---|
| Trial | "price_cents": 0 Includes: 7 days, 1 domain, 1 GB mailbox, features: webmail, imap, contacts, calendar, tasks, management_api; |
| Basic | "price_cents": 162 Includes: 1 domain, 3 mailboxes, 30 GB mailbox, 15 aliases, 90 GB email storage; billing_price_cents 890 (BRL) |
| Professional | "price_cents": 962 Includes: 5 domains, 10 mailboxes, 50 GB mailbox, 100 GB files, 100 aliases, 500 GB email storage; billing_pri |
| Enterprise | "price_cents": 17235 Includes: 25 domains, 100 mailboxes, 100 GB mailbox, 1000 GB files, 1000 aliases, 10000 GB email storage; bill |
Plan details, limits and sources →
Rate limits
- : 1000 real recipients per calendar month
- : 5000 (trial) / 20000 (pass) / +10000 (top-up) entitlement period (30 day trial/pass, 365 day top up)
- : undocumented undocumented
Billed by: cents · FinOps profile →
Pricing Plans 1
Published pricing tiers and plan structures.
Rate Limits 1
Documented rate limits and quota policies.
Commsharbor Rate Limits
RATE LIMITSService Levels 1
Uptime the provider promises or reports, as SLA4OAI. Read from its own pages; APIs.io runs no monitors.
CommsHarbor
SLAFinOps 1
Cost, billing, and metering signals for API financial operations.
Commsharbor Finops
FINOPSEvent Specifications 1
AsyncAPI definitions for this provider's event-driven and streaming APIs.
Commsharbor Webhooks
ASYNCAPISpectral Rules 1
Spectral governance rulesets for linting and validating these APIs.
CommsHarbor API Rules
SPECTRALOpenAPI Overlays 1
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.
Commsharbor Openapi Overlay
DERIVEDSecurity Posture 3
Authentication, domain security, vulnerability disclosure, and trust-center signals.
Resources
Get Started 1
Portal, sign-up, and the first successful call
Agent Surfaces 4
MCP servers, agent skills, and machine-readable catalogs
Design & Contract 4
Pagination, idempotency, versioning, errors, and events
Access & Security 5
Authentication, authorization, and security posture
Operate 1
Status, limits, changes, and where to get help
Commercial 4
Pricing, plans, and the legal terms of use
Company 1
The organization behind the API
Other 2
Properties that don't map to a standard resource type
Source (apis.yml)
CommsHarbor API — frequently asked questions
Does CommsHarbor have an API?
Yes. APIs.io lists 18 APIs from CommsHarbor, including CommsHarbor Apis.json API, CommsHarbor Auth API and CommsHarbor Aws API, and 15 more.
Is there an OpenAPI specification for the CommsHarbor API?
Yes. APIs.io indexes 18 OpenAPI specifications for CommsHarbor, each linked for download from this page.
How do I authenticate with the CommsHarbor API?
CommsHarbor uses bearer-token authentication (http · 1 scheme). The details are profiled on APIs.io as Commsharbor Authentication.
How much does the CommsHarbor API cost?
CommsHarbor publishes its prices; its Trial plan is "price_cents": 0 as of 2026-10-28. APIs.io lists 4 pricing plans for CommsHarbor, with each plan's price, limits and inclusions under Pricing on this page.
Does CommsHarbor have an MCP server?
Yes. APIs.io lists 1 MCP server for CommsHarbor.
Is the CommsHarbor API ready for AI agents?
CommsHarbor has a Kin Score of 50.9 out of 100 (developing) and an Agent Readiness score of 44.7 (agent-ready), scored by API Evangelist on 2026-11-06.
Work with this as data
Every provider here is available over the APIs.io API and to AI agents over MCP.