Category · Communication
Lifecycle marketing and customer engagement platforms for AI agents
Platforms that hold customer profiles and events, build segments and send campaigns and journeys across email, SMS and push. Compared on profile and event APIs, segment access, campaign control and what an agent can change without a person.
Capability keys marketing.profiles · marketing.events · marketing.segments · marketing.campaigns · marketing.journeys · All tools
letme.dev/marketing.profiles picks the top-graded tool in this list and says how to call it direct; calling through letme comes later.
The same listing from the live API. Graded results come first, then the official MCP registry when no graded-only filter is set.
https://www.anchorterminal.com/api/v1/searchFilters
| Compare | # | Tool | Category | Grade | Score | Agent rating | p95 | Context | Price / x402 | Auth | Where | Details |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 57 | Customer.ioPeaberry Software, Inc. d/b/a Customer.io · HTTP API | Lifecycle marketing | BB | 74.5 | none | n/a | n/a | $100 / mo | OAuth or key | Hosted | ||
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Customer.io is a customer engagement platform that stores profiles and events, builds segments and sends automated email, SMS, push, in-app and WhatsApp messages. Agents reach it through REST APIs, a hosted MCP server and a command-line tool. Top strength MCP connections default to the Top weakness No idempotency key found on App API writes, transactional sends included |
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| 90 | Klaviyo API + MCPKlaviyo, Inc. · HTTP API | Lifecycle marketing | BB | 71.7 | none | n/a | n/a | $20 / mo | OAuth or key | Hosted + local | ||
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Klaviyo is a marketing platform that holds customer profiles and events and sends email, SMS, WhatsApp and push campaigns and flows. Agents reach it through a JSON:API REST API and an official hosted MCP server. Top strength Public OpenAPI 3.0.2 description of 345 operations, each with its rate limit and required scopes, in an MIT repository updated on 7 October 2026 Top weakness No approval or confirmation step before |
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| 296 | BrazeBraze, Inc. · HTTP API | Lifecycle marketing | C | 61.2 | none | n/a | n/a | Paid | OAuth or key | Hosted | ||
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Braze is a hosted engagement platform that stores customer profiles and events, builds segments and sends campaigns and Canvas journeys by email, SMS, push and in-app message. Agents reach it through a REST API and an official remote MCP server. Top strength REST API keys carry per-endpoint permissions and optional IP allowlists, and a key's scope can't be edited after creation Top weakness No public prices. Editions, monthly active users and Action Credits are sold by contract, and the pricing page says there is no free plan |
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| 413 | IterableIterable, Inc. · HTTP API | Lifecycle marketing | C | 55.2 | none | n/a | n/a | Paid | API key | Hosted + local | ||
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Iterable is a hosted customer engagement platform that stores user profiles and events and sends campaigns and journeys by email, SMS, push, in-app and WhatsApp. Agents reach it through a REST API and an official local MCP server, in beta. Top strength Public Swagger 2.0 specification at api.iterable.com/api-docs with 159 operations and 210 schemas, the same for the EU data centre Top weakness No public price, trial or self-serve signup. iterable.com/pricing redirects to the home page, which asks for a demo |
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| 468 | ActiveCampaignActiveCampaign, LLC · HTTP API | Lifecycle marketing | D | 50.5 | none | n/a | n/a | $19 / mo | OAuth or key | Local | ||
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ActiveCampaign is a hosted marketing automation platform for email, SMS and WhatsApp with a built-in CRM. Its v3 REST API and an official remote MCP server cover contacts, lists, tags, segments, campaigns, automations and deals. Top strength Every reference page is served as Markdown with an OpenAPI 3.1 definition for its operation, indexed by llms.txt Top weakness Three critical incidents on status.activecampaign.com between 27 July and 28 September 2026, one of about 24 hours 41 minutes on EU segmented campaigns |
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Nothing matches these filters. .
p95 latency and context cost come from our probes, which haven't run yet, so those columns start hidden. Grades run from AA to F, and agent-ready means BB or better. Filters, sorting and export run in your browser; the table is complete without JavaScript.
How we test this category
The same hundred test profiles and events loaded into each listing. The same tasks run through its API (update a profile, track an event, build a segment, trigger a message, read campaign results). We check rate limits, consent handling and how a send is held for approval. In this run listings are graded from public evidence against the published checklist. This test hasn't run yet, so Task success is pending and the grades here come from the categories assessed from public evidence.
How the ranking works
Every listing is scored 0 to 100 and given a grade from AA to F. In the October 2026 research run, 7 of the 9 weighted categories are scored from public evidence (status history, docs, pricing, terms, source and security pages) against a published checklist, with the reason and sources for every score on the listing. Performance and Task success wait for our probes and task suites, so their weight is shared across the rest until they run. Negative events deduct up to 15 points. Read the methodology.
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