{ "data": { "a": { "slug": "activecampaign", "name": "ActiveCampaign", "vendor": "ActiveCampaign, LLC", "vendorUrl": "https://www.activecampaign.com", "kind": "http-api", "category": "lifecycle-marketing", "summary": "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.", "url": "https://www.anchorterminal.com/tools/activecampaign", "markdownUrl": "https://www.anchorterminal.com/tools/activecampaign.md", "slimMarkdownUrl": "https://www.anchorterminal.com/tools/activecampaign.min.md", "jsonUrl": "https://www.anchorterminal.com/api/v1/tools/activecampaign.json", "license": "Proprietary service under ActiveCampaign's terms of service and API licence agreement", "transports": [ "http", "streamable-http" ], "packages": [], "auth": "mixed", "authNotes": "Self-serve. The REST API takes an `Api-Token` header, and each user has one key, shown under Settings, Developer with the account's base URL. No scopes, read-only keys or OAuth for the REST API were found in the reviewed documentation. The remote MCP server uses an account-specific URL from the same page, and the user signs in to ActiveCampaign and approves the connection. Event tracking posts an event key and account ID in the request body.", "pricing": "paid", "pricingNotes": "14-day trial with no card, and a free developer sandbox on request by form (1,000 contacts, 100 email sends, 5 users, two years). No free plan. Plans are priced by contact count, from $19 a month for Starter at 1,000 contacts billed monthly, per the pricing page's own data file read on 2026-10-08. The API, webhooks and the MCP server are marked as included on all four plans (https://www.activecampaign.com/pricing).", "priceSummary": "$19 / mo", "where": "local", "x402": { "level": "no", "evidence": "No x402, MPP or L402 in the developer docs or on the pricing page (checked 2026-10-08).", "endpoints": [] }, "toolCount": 50, "popularity": { "githubStars": null, "npmWeekly": null, "pypiWeekly": null, "asOf": "2026-10-08" }, "docsUrl": "https://developers.activecampaign.com/reference/overview", "llmsTxt": "https://developers.activecampaign.com/llms.txt", "capabilities": [ "marketing.profiles", "marketing.events", "marketing.segments", "marketing.campaigns", "marketing.journeys", "crm.records", "crm.pipeline", "crm.webhooks", "messaging.sms", "messaging.whatsapp" ], "tags": [ "official", "hosted", "closed-source", "mcp", "api-key", "llms-txt", "openapi", "webhooks", "no-card", "trial", "sandbox", "status-page", "sla", "sms", "whatsapp" ], "lastRelease": "2026-09-02", "graded": true, "anchor": { "graded": true, "score": 50.5, "grade": "D", "agentReady": false, "rank": 684, "ranked": true, "rankOf": 842, "categoryRank": 6, "methodology": "0.4", "run": "2026-10-01", "scores": { "ergonomics": 52, "maintenance": 35, "payments": 30, "reliability": 67, "schema": 68, "security": 33, "transparency": 57 }, "pending": [ "performance", "tasks" ], "assessment": { "confidence": "medium", "date": "2026-10-08" }, "negative": 0, "verdict": "The v3 REST API covers contacts, segments, campaign scheduling and bulk import, with OpenAPI 3.1 definitions inside public Markdown reference pages and documented Retry-After on 429s. Each user has one unscoped API key, the limit is 5 requests a second, and no changelog was found. The status page shows three critical incidents between 27 July and 28 September 2026.", "bestFor": "Small and mid-sized teams already on ActiveCampaign that want an agent to maintain contacts, segments and campaign drafts and enrol contacts in automations.", "strengths": [ "Every reference page is served as Markdown with an OpenAPI 3.1 definition for its operation, indexed by llms.txt", "429 responses carry Retry-After, RateLimit-Limit and RateLimit-Remaining headers per the rate limit page", "Contact upsert by email and bulk import of 250 contacts a request make contact writes safe to repeat", "Official remote MCP server with 50 listed tools and no delete tool, included on all four plans per the pricing page", "A 99.5 per cent availability SLA is published for enterprise subscriptions, and the sub-processor list of 25 September 2026 names locations" ], "weaknesses": [ "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", "One API key per user with no scopes or read-only keys in the reviewed documentation", "The limit is 5 requests a second per account on every plan", "No public API changelog or deprecation policy was found, and developers.activecampaign.com/changelog returns 404", "The official PHP and Node.js clients wrap the v1 API and last changed in December 2017 and March 2018" ], "agentNotes": [ "Take the base URL from Settings, Developer in the account. Do not build it from the account name, because non-US accounts may not sit on api-us1.com", "Use POST /contact/sync to upsert by email, and POST /import/bulk_import for up to 250 contacts, then read each row's outcome from GET /import/info", "Page large contact sets with `orders[id]=ASC` and `id_greater`, not `offset`. Unsupported filter and order keys are silently ignored", "Check `succeeded` in the body after scheduling, pausing or stopping a campaign. Business-rule failures return 200 with `succeeded` set to 0", "Stay under 5 requests a second per account and wait for the Retry-After value on a 429" ], "metrics": { "kind": "remote", "measured": false }, "reviewCount": 0, "avgRating": 0, "history": [ { "basis": "public evidence", "confidence": "medium", "grade": "D", "methodology": "0.4", "pending": [ "performance", "tasks" ], "run": "2026-10-01", "runLabel": "October 2026 research run", "score": 50.5 } ], "editorialScores": { "ergonomics": 52, "maintenance": 35, "payments": 30, "reliability": 67, "schema": 68, "security": 33, "transparency": 55 }, "provenanceScore": 58 }, "connect": { "http": "curl -H \"Api-Token: $ACTIVECAMPAIGN_API_TOKEN\" https://\u003caccount\u003e.api-us1.com/api/3/users/me" }, "letme": { "capability": "https://letme.dev/marketing.profiles", "tool": "https://letme.dev/activecampaign" }, "area": "communication", "unitPrices": [ { "item": "Starter, 1,000 contacts", "unit": "month", "usd": 19, "note": "billed monthly, $180 billed yearly, 1 user. $49 at 2,500 contacts" }, { "item": "Plus, 1,000 contacts", "unit": "month", "usd": 59, "note": "billed monthly, $588 billed yearly, 1 user" }, { "item": "Pro, 1,000 contacts", "unit": "month", "usd": 99, "note": "billed monthly, $948 billed yearly, 3 users" }, { "item": "Enterprise, 1,000 contacts", "unit": "month", "usd": 179, "note": "billed monthly, $1,740 billed yearly, 5 users" } ], "provenance": { "legalEntity": "ActiveCampaign, LLC", "domain": "activecampaign.com", "domainRegistered": "2003-01-10", "endpointOnVendorDomain": false, "terms": "https://www.activecampaign.com/legal/terms-of-service", "privacy": "https://www.activecampaign.com/legal/privacy-policy", "statusPage": "https://status.activecampaign.com", "changelog": "", "securityTxt": "none", "checked": "2026-10-08", "notes": [ "The terms of service (last updated 23 December 2025) name ActiveCampaign, LLC, 1 North Dearborn Street, 5th Floor, Chicago, IL 60602.", "The API answers at https://\u003caccount\u003e.api-us1.com/api/3 and event tracking at https://trackcmp.net/event, neither on activecampaign.com. The docs name both hosts.", "www.activecampaign.com/.well-known/security.txt and /security.txt return 404.", "developers.activecampaign.com/changelog returns 404 and no other API changelog was found.", "RDAP for activecampaign.com gives a registration date of 2003-01-10." ], "score": 58 }, "pageJsonUrl": "https://www.anchorterminal.com/tools/activecampaign.json", "live": { "slug": "activecampaign", "vendorStatus": { "page": "https://status.activecampaign.com", "indicator": "unknown", "summary": "no machine-readable status found", "checkedAt": "2026-10-09T11:36:22.963509948Z" }, "securityTxt": { "url": "https://activecampaign.com/.well-known/security.txt", "state": "none", "checkedAt": "2026-10-08T15:39:02.115932036Z" }, "pages": [ { "url": "https://www.activecampaign.com/pricing", "kind": "pricing", "status": 200, "checkedAt": "2026-10-08T18:25:57.337222352Z", "changedAt": "0001-01-01T00:00:00Z", "fingerprint": "313c2f2feb00" }, { "url": "https://www.activecampaign.com/legal/privacy-policy", "kind": "privacy", "status": 304, "checkedAt": "2026-10-08T18:25:53.274671193Z", "changedAt": "2026-10-02T15:25:06.170575042Z", "fingerprint": "3ba14f859de2" }, { "url": "https://www.activecampaign.com/legal/terms-of-service", "kind": "terms", "status": 200, "checkedAt": "2026-10-08T18:25:55.312230622Z", "changedAt": "0001-01-01T00:00:00Z", "fingerprint": "3a914eb3316d" } ], "updatedAt": "2026-10-09T11:36:22.963509948Z" } }, "answer": "Mailchimp Marketing API scores 57.4 (C) on agent readiness against ActiveCampaign's 50.5 (D), and leads in 5 of 7 scored categories. ActiveCampaign leads on reliability and payments \u0026 pricing.", "b": { "slug": "mailchimp-marketing", "name": "Mailchimp Marketing API", "vendor": "Intuit Mailchimp", "vendorUrl": "https://mailchimp.com", "kind": "http-api", "category": "lifecycle-marketing", "summary": "Intuit Mailchimp's Marketing API manages audiences, contacts, tags, segments, events, campaigns, automations and reports for a Mailchimp account. It is a REST API at `https://api.mailchimp.com/3.0/` that takes an API key or an OAuth 2 token.", "url": "https://www.anchorterminal.com/tools/mailchimp-marketing", "markdownUrl": "https://www.anchorterminal.com/tools/mailchimp-marketing.md", "slimMarkdownUrl": "https://www.anchorterminal.com/tools/mailchimp-marketing.min.md", "jsonUrl": "https://www.anchorterminal.com/api/v1/tools/mailchimp-marketing.json", "repo": "https://github.com/mailchimp/mailchimp-marketing-typescript-sdk", "license": "Proprietary service under Mailchimp's Standard Terms of Use and API Use Policy. The generated client libraries declare Apache-2.0 in their package metadata", "transports": [ "http" ], "remoteUrl": "https://api.mailchimp.com/3.0", "packages": [ { "registry": "npm", "name": "@mailchimp/mailchimp_marketing" }, { "registry": "pypi", "name": "mailchimp-marketing" } ], "auth": "mixed", "authNotes": "Self-serve API key, or an OAuth 2 token for another user's account. A user with Manager permissions or above creates a key under Profile, Extras, API keys, and it is shown once. A key has full account access, bounded only by its creator's user level, with no read-only or per-endpoint option. Keys created from 22 June 2026 expire after one year, per the help centre. OAuth uses the authorisation code grant with no scopes, no refresh token and tokens that do not expire. Registering an OAuth app is done in the account, and a Marketplace listing needs OAuth. Both credentials go in HTTP Basic or `Authorization: Bearer`.", "pricing": "freemium", "pricingNotes": "The Free plan has 250 contacts and 500 sends a month (250 a day), one audience and one seat, with no time limit. Paid plans start at $13 a month for Essentials, $20 for Standard and $350 for Premium with USD selected, and rise with the contact count. API calls are not metered. The 14-day trial of a paid plan needs payment details. An agent's owner can start on the Free plan without a contract (https://mailchimp.com/pricing/marketing/, https://mailchimp.com/help/about-mailchimp-pricing-plans/).", "priceSummary": "$13 / mo", "where": "hosted", "x402": { "level": "no", "evidence": "No x402, MPP or L402 in the developer docs, the OpenAPI file or the pricing page (checked 2026-10-08).", "endpoints": [] }, "toolCount": null, "popularity": { "githubStars": null, "npmWeekly": 278434, "pypiWeekly": 111433, "asOf": "2026-10-08" }, "docsUrl": "https://mailchimp.com/developer/marketing/", "llmsTxt": "https://mailchimp.com/developer/marketing/llms.txt", "openapi": "https://api.mailchimp.com/schema/openapi/OpenAPI.json?expand", "capabilities": [ "marketing.profiles", "marketing.events", "marketing.segments", "marketing.campaigns", "marketing.journeys", "email.templates" ], "tags": [ "official", "hosted", "closed-source", "api-key", "oauth", "openapi", "llms-txt", "free-tier", "webhooks", "cli", "typescript", "python", "go", "java", "status-page", "soc2" ], "lastRelease": "2026-10-05", "graded": true, "anchor": { "graded": true, "score": 57.4, "grade": "C", "agentReady": false, "rank": 549, "ranked": true, "rankOf": 842, "categoryRank": 4, "methodology": "0.4", "run": "2026-10-01", "scores": { "ergonomics": 73, "maintenance": 63, "payments": 25, "reliability": 60, "schema": 76, "security": 46, "transparency": 74 }, "pending": [ "performance", "tasks" ], "assessment": { "confidence": "medium", "date": "2026-10-08" }, "negative": -2, "negativeNotes": [ "8 October 2026. The quick start tells users to run `npm install @mailchimp/mailchimp-marketing`, and the npm registry answers 404 for that name. Its `pip install mailchimp-marketing` installs version 3.0.80 from November 2022, which has no `MailchimpClient` class as the quick start's code needs. The Go, Ruby, Rust and PHP names resolve, so 2 for a claim the listing can't meet in two of nine languages (https://mailchimp.com/developer/marketing/build/start-developing/send-your-first-api-request.md, https://registry.npmjs.org/@mailchimp%2fmailchimp-marketing)." ], "verdict": "A public OpenAPI 3.1 file covers all 297 operations, every docs page has a Markdown copy, and responses can be trimmed with `fields`. An API key carries full account access with no read-only option. The quick start's TypeScript package was not on npm on 8 October 2026, and the changelog's newest entry is 19 August 2025.", "bestFor": "Small businesses already on Mailchimp that want an agent to sync contacts, tag and segment them, record events, draft and schedule campaigns and read reports.", "strengths": [ "OpenAPI 3.1 file for all 297 operations at `https://api.mailchimp.com/schema/openapi/OpenAPI.json`, with an error response on every operation", "`fields` and `exclude_fields` trim responses on 130 operations, and `count` pages up to 1,000 records", "Every docs page has a Markdown copy at the URL plus `.md`, with llms.txt indexes and four published agent skills", "Errors are `application/problem+json` with `title`, `status`, `detail` and `instance`, and an `X-Trigger-Error` header lets a client test its handling", "Free plan with 250 contacts and 500 sends a month, and a status page with an API component for each of 21 data centres" ], "weaknesses": [ "An API key has full account access. The docs say there is no read-only key and no way to limit a key to chosen endpoints", "OAuth 2 tokens carry no scopes and never expire, and no approval step before `actions/send` was found", "The quick start's `npm install @mailchimp/mailchimp-marketing` answered 404 on npm, and `pip install mailchimp-marketing` installs a 2022 library with a different client class", "The only stated limit is 10 simultaneous connections per user. No `Retry-After` header, idempotency key or SLA was found", "The developer changelog's newest entry is 19 August 2025, and the docs say keys never expire while the help centre says new keys expire after one year", "Click tracking was lost for about 25 hours on 3 and 4 August 2026 and cannot be backfilled, per the status page" ], "agentNotes": [ "Send the key or OAuth token as `Authorization: Bearer` to `https://api.mailchimp.com/3.0/`. Treat it as full account access and keep it server-side", "Address a contact by the MD5 hash of the lowercase email address, and use PUT on `/lists/{list_id}/members/{subscriber_hash}` so a retry does not create a duplicate", "Ask a person before POST `/campaigns/{campaign_id}/actions/send`. Read `/campaigns/{campaign_id}/send-checklist` and use `actions/test` first", "Keep to 10 concurrent requests per user, and send large jobs to `/batches`. A 429 names no wait time, so back off and retry", "Add `fields=` to every list call and set `count` (default 10, maximum 1,000) with `offset`", "Set `is_syncing` to true when loading historical events so they do not trigger automations" ], "metrics": { "kind": "remote", "measured": false }, "reviewCount": 0, "avgRating": 0, "history": [ { "basis": "public evidence", "confidence": "medium", "grade": "C", "methodology": "0.4", "pending": [ "performance", "tasks" ], "run": "2026-10-01", "runLabel": "October 2026 research run", "score": 57.4 } ], "editorialScores": { "ergonomics": 73, "maintenance": 63, "payments": 25, "reliability": 60, "schema": 76, "security": 46, "transparency": 55 }, "provenanceScore": 92 }, "connect": { "http": "curl -sS \\\n \"https://api.mailchimp.com/3.0/ping\" \\\n --user \"anystring:${apikey}\"", "claudeCode": "claude mcp add --transport http fern_mcp_mailchimp-docs \\\n https://mailchimp.com/developer/_mcp/server", "config": { "mcpServers": { "mailchimp-docs": { "type": "http", "url": "https://mailchimp.com/developer/_mcp/server" } } } }, "letme": { "capability": "https://letme.dev/marketing.profiles", "tool": "https://letme.dev/mailchimp-marketing" }, "sameCompany": [ "mandrill" ], "area": "communication", "unitPrices": [ { "item": "Essentials plan, up to 500 contacts", "unit": "month", "usd": 13, "note": "starting price with USD selected, rises with contacts" }, { "item": "Standard plan, up to 500 contacts", "unit": "month", "usd": 20, "note": "starting price with USD selected, rises with contacts" }, { "item": "Premium plan, starting price", "unit": "month", "usd": 350, "note": "starting price with USD selected, rises with contacts" } ], "provenance": { "legalEntity": "The Rocket Science Group LLC d/b/a Mailchimp", "domain": "mailchimp.com", "domainRegistered": "2001-06-29", "endpointOnVendorDomain": true, "terms": "https://mailchimp.com/legal/terms/", "privacy": "https://www.intuit.com/privacy/statement/", "statusPage": "https://status.mailchimp.com", "changelog": "https://mailchimp.com/developer/release-notes/", "securityTxt": "valid", "checked": "2026-10-08", "notes": [ "The Standard Terms of Use, updated and effective 10 October 2025, name The Rocket Science Group LLC d/b/a Mailchimp, 405 N Angier Ave. NE, Atlanta, Georgia. API use is also governed by the API Use Policy at https://mailchimp.com/legal/api_use/, updated 1 August 2023, which the terms incorporate.", "The privacy field points at the Intuit Global Privacy Statement, last updated 9 March 2026. mailchimp.com/legal/privacy redirects to it, the terms name it as the privacy document for the service, and it names The Rocket Science Group LLC d/b/a Mailchimp. Mailchimp publishes no separate privacy policy.", "The API answers at api.mailchimp.com. An unauthenticated request to `/3.0/ping` returned 401 as `application/problem+json` on 8 October 2026.", "mailchimp.com/.well-known/security.txt holds one Contact line that points at the responsible disclosure section of the security page, with no Expires field. The value follows the reading on the Mailchimp Transactional listing.", "The changelog covers the Marketing and Transactional APIs together. Its newest entry is dated 19 August 2025, and its newest Marketing entry 7 August 2025.", "RDAP for mailchimp.com gives a registration date of 2001-06-29 (Verisign)." ], "score": 92 }, "pageJsonUrl": "https://www.anchorterminal.com/tools/mailchimp-marketing.json", "live": { "slug": "mailchimp-marketing", "probe": { "target": "https://api.mailchimp.com/3.0", "method": "get", "lastAt": "2026-10-09T11:46:33.12385218Z", "lastOk": true, "lastStatus": 401, "lastMs": 330, "lastNote": "asks for credentials", "authRequired": true, "uptime24h": 100, "uptime30d": 100, "p50ms24h": 305, "p95ms24h": 473, "samples24h": 44, "samples30d": 44, "days": [ { "date": "2026-10-09", "probes": 44, "ok": 44 } ] }, "vendorStatus": { "page": "https://status.mailchimp.com", "indicator": "unknown", "summary": "no machine-readable status found", "checkedAt": "2026-10-09T07:58:08.512261949Z" }, "updatedAt": "2026-10-09T11:46:33.12385218Z" } }, "facts": [ { "a": "HTTP API", "b": "HTTP API", "name": "Kind" }, { "a": "ActiveCampaign, LLC", "b": "Intuit Mailchimp", "name": "Vendor" }, { "a": "no (local only)", "b": "https://api.mailchimp.com/3.0", "name": "Hosted endpoint" }, { "a": "HTTP, Streamable HTTP", "b": "HTTP", "name": "Transports" }, { "a": "OAuth or key", "b": "OAuth or key", "name": "Auth" }, { "a": "Paid", "b": "Freemium", "name": "Pricing" }, { "a": "no", "b": "no", "name": "x402" }, { "a": "Proprietary service under ActiveCampaign's terms of service and API licence agreement", "b": "Proprietary service under Mailchimp's Standard Terms of Use and API Use Policy. The generated client libraries declare Apache-2.0 in their package metadata", "name": "Licence" }, { "a": "50", "b": "none", "name": "Tools exposed" }, { "a": "no", "b": "no", "name": "Read-only variant documented" }, { "a": "yes", "b": "yes", "name": "llms.txt" }, { "a": "2026-09-02", "b": "2026-10-05", "name": "Last release" }, { "a": "2025-12-23", "b": "no date given", "name": "Terms last updated" }, { "a": "2026-10-01", "b": "2026-03-09", "name": "Privacy policy last updated" }, { "a": "yes", "b": "yes", "name": "Customer content may train models" }, { "a": "yes", "b": "not found in the text", "name": "Terms restrict automated access" }, { "a": "not found in the text", "b": "not found in the text", "name": "Terms restrict benchmarking" }, { "a": "yes", "b": "yes", "name": "Terms or service can change without notice" }, { "a": "yes", "b": "yes", "name": "Arbitration or class-action waiver" }, { "a": "none", "b": "278k npm/wk, 111k PyPI/wk", "name": "Popularity" } ], "faq": [ { "answer": "Mailchimp Marketing API scores 57.4 (C) on agent readiness against ActiveCampaign's 50.5 (D), and leads in 5 of 7 scored categories. ActiveCampaign leads on reliability and payments \u0026 pricing.", "question": "Which is better for AI agents, ActiveCampaign or Mailchimp Marketing API?" }, { "answer": "Both take an API key or an OAuth sign-in.", "question": "Do ActiveCampaign and Mailchimp Marketing API need an API key?" }, { "answer": "No hosted endpoint is listed for ActiveCampaign. Mailchimp Marketing API has a hosted endpoint at https://api.mailchimp.com/3.0.", "question": "Can an agent call ActiveCampaign and Mailchimp Marketing API without installing anything?" } ], "goodFor": [ { "aheadOn": [ "Reliability, 67 against 60", "Payments \u0026 pricing, 30 against 25" ], "also": [ "Free to start without a card" ], "goodFor": "Small and mid-sized teams already on ActiveCampaign that want an agent to maintain contacts, segments and campaign drafts and enrol contacts in automations.", "slug": "activecampaign", "watchFor": "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" }, { "aheadOn": [ "Schema \u0026 documentation, 76 against 68", "Agent ergonomics, 73 against 52", "Security \u0026 auth, 46 against 33", "Maintenance \u0026 community, 63 against 35", "Transparency \u0026 trust, 74 against 57" ], "also": [ "A hosted endpoint, with nothing to install" ], "goodFor": "Small businesses already on Mailchimp that want an agent to sync contacts, tag and segment them, record events, draft and schedule campaigns and read reports.", "slug": "mailchimp-marketing", "watchFor": "An API key has full account access. The docs say there is no read-only key and no way to limit a key to chosen endpoints" } ], "job": { "capability": "marketing.profiles", "name": "Marketing profiles" }, "others": [ { "json": "https://www.anchorterminal.com/compare/activecampaign-vs-braze.json", "title": "ActiveCampaign vs Braze", "url": "https://www.anchorterminal.com/compare/activecampaign-vs-braze" }, { "json": "https://www.anchorterminal.com/compare/activecampaign-vs-customer-io.json", "title": "ActiveCampaign vs Customer.io", "url": "https://www.anchorterminal.com/compare/activecampaign-vs-customer-io" }, { "json": "https://www.anchorterminal.com/compare/activecampaign-vs-iterable.json", "title": "ActiveCampaign vs Iterable", "url": "https://www.anchorterminal.com/compare/activecampaign-vs-iterable" }, { "json": "https://www.anchorterminal.com/compare/activecampaign-vs-klaviyo.json", "title": "ActiveCampaign vs Klaviyo API + MCP", "url": "https://www.anchorterminal.com/compare/activecampaign-vs-klaviyo" }, { "json": "https://www.anchorterminal.com/compare/braze-vs-mailchimp-marketing.json", "title": "Braze vs Mailchimp Marketing API", "url": "https://www.anchorterminal.com/compare/braze-vs-mailchimp-marketing" }, { "json": "https://www.anchorterminal.com/compare/customer-io-vs-mailchimp-marketing.json", "title": "Customer.io vs Mailchimp Marketing API", "url": "https://www.anchorterminal.com/compare/customer-io-vs-mailchimp-marketing" }, { "json": "https://www.anchorterminal.com/compare/iterable-vs-mailchimp-marketing.json", "title": "Iterable vs Mailchimp Marketing API", "url": "https://www.anchorterminal.com/compare/iterable-vs-mailchimp-marketing" }, { "json": "https://www.anchorterminal.com/compare/klaviyo-vs-mailchimp-marketing.json", "title": "Klaviyo API + MCP vs Mailchimp Marketing API", "url": "https://www.anchorterminal.com/compare/klaviyo-vs-mailchimp-marketing" } ], "scores": [ { "activecampaign": 67, "by": 7, "edge": "activecampaign", "key": "reliability", "mailchimp-marketing": 60, "name": "Reliability", "weight": 16 }, { "key": "performance", "name": "Performance", "pending": true, "weight": 10 }, { "activecampaign": 68, "by": 8, "edge": "mailchimp-marketing", "key": "schema", "mailchimp-marketing": 76, "name": "Schema \u0026 documentation", "weight": 13 }, { "activecampaign": 52, "by": 21, "edge": "mailchimp-marketing", "key": "ergonomics", "mailchimp-marketing": 73, "name": "Agent ergonomics", "weight": 13 }, { "activecampaign": 33, "by": 13, "edge": "mailchimp-marketing", "key": "security", "mailchimp-marketing": 46, "name": "Security \u0026 auth", "weight": 14 }, { "activecampaign": 30, "by": 5, "edge": "activecampaign", "key": "payments", "mailchimp-marketing": 25, "name": "Payments \u0026 pricing", "weight": 10 }, { "key": "tasks", "name": "Task success", "pending": true, "weight": 10 }, { "activecampaign": 35, "by": 28, "edge": "mailchimp-marketing", "key": "maintenance", "mailchimp-marketing": 63, "name": "Maintenance \u0026 community", "weight": 7 }, { "activecampaign": 57, "by": 17, "edge": "mailchimp-marketing", "key": "transparency", "mailchimp-marketing": 74, "name": "Transparency \u0026 trust", "weight": 7 } ], "summary": "Mailchimp Marketing API scores 57.4 (C) on agent readiness against ActiveCampaign's 50.5 (D), and leads in 5 of 7 scored categories. ActiveCampaign leads on reliability and payments \u0026 pricing. Both do marketing profiles.", "verdicts": { "activecampaign": "The v3 REST API covers contacts, segments, campaign scheduling and bulk import, with OpenAPI 3.1 definitions inside public Markdown reference pages and documented Retry-After on 429s. Each user has one unscoped API key, the limit is 5 requests a second, and no changelog was found. The status page shows three critical incidents between 27 July and 28 September 2026.", "mailchimp-marketing": "A public OpenAPI 3.1 file covers all 297 operations, every docs page has a Markdown copy, and responses can be trimmed with `fields`. An API key carries full account access with no read-only option. The quick start's TypeScript package was not on npm on 8 October 2026, and the changelog's newest entry is 19 August 2025." } }, "kind": "anchor.page", "links": { "api": "https://www.anchorterminal.com/api/v1/index.json", "html": "https://www.anchorterminal.com/compare/activecampaign-vs-mailchimp-marketing", "json": "https://www.anchorterminal.com/compare/activecampaign-vs-mailchimp-marketing.json", "llms": "https://www.anchorterminal.com/llms.txt", "markdown": "https://www.anchorterminal.com/compare/activecampaign-vs-mailchimp-marketing.md", "slim": "https://www.anchorterminal.com/compare/activecampaign-vs-mailchimp-marketing.min.md" }, "markdown": "Mailchimp Marketing API scores 57.4 (C) on agent readiness against ActiveCampaign's 50.5 (D), and leads in 5 of 7 scored categories. ActiveCampaign leads on reliability and payments \u0026 pricing. Both do marketing profiles.\n\n- ActiveCampaign: grade D, 50.5/100, rank #684 of 842. Markdown https://www.anchorterminal.com/tools/activecampaign.md · JSON https://www.anchorterminal.com/api/v1/tools/activecampaign.json\n- Mailchimp Marketing API: grade C, 57.4/100, rank #549 of 842. Markdown https://www.anchorterminal.com/tools/mailchimp-marketing.md · JSON https://www.anchorterminal.com/api/v1/tools/mailchimp-marketing.json\n\n## Which one, for what\n\n### ActiveCampaign (D)\n\nGood for: Small and mid-sized teams already on ActiveCampaign that want an agent to maintain contacts, segments and campaign drafts and enrol contacts in automations.\n\nAhead on:\n- Reliability, 67 against 60\n- Payments \u0026 pricing, 30 against 25\n\nAlso in its favour:\n- Free to start without a card\n\nWatch for: 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\n\n### Mailchimp Marketing API (C)\n\nGood for: Small businesses already on Mailchimp that want an agent to sync contacts, tag and segment them, record events, draft and schedule campaigns and read reports.\n\nAhead on:\n- Schema \u0026 documentation, 76 against 68\n- Agent ergonomics, 73 against 52\n- Security \u0026 auth, 46 against 33\n- Maintenance \u0026 community, 63 against 35\n- Transparency \u0026 trust, 74 against 57\n\nAlso in its favour:\n- A hosted endpoint, with nothing to install\n\nWatch for: An API key has full account access. The docs say there is no read-only key and no way to limit a key to chosen endpoints\n\n\n## Score by category\n\n| Category | Weight | ActiveCampaign | Mailchimp Marketing API | Edge |\n| --- | --- | --- | --- | --- |\n| Reliability | 16% (20 this run) | 67 | 60 | ActiveCampaign +7 |\n| Performance | 10%, pending | pending | pending | not scored in this run |\n| Schema \u0026 documentation | 13% (16.2 this run) | 68 | 76 | Mailchimp Marketing API +8 |\n| Agent ergonomics | 13% (16.2 this run) | 52 | 73 | Mailchimp Marketing API +21 |\n| Security \u0026 auth | 14% (17.5 this run) | 33 | 46 | Mailchimp Marketing API +13 |\n| Payments \u0026 pricing | 10% (12.5 this run) | 30 | 25 | ActiveCampaign +5 |\n| Task success | 10%, pending | pending | pending | not scored in this run |\n| Maintenance \u0026 community | 7% (8.8 this run) | 35 | 63 | Mailchimp Marketing API +28 |\n| Transparency \u0026 trust | 7% (8.8 this run) | 57 | 74 | Mailchimp Marketing API +17 |\n| Negative events | ≤15 | 0 | -2 | |\n| **Total** | | **50.5 · D** | **57.4 · C** | |\n\n## Facts side by side\n\n| Fact | ActiveCampaign | Mailchimp Marketing API |\n| --- | --- | --- |\n| Kind | HTTP API | HTTP API |\n| Vendor | ActiveCampaign, LLC | Intuit Mailchimp |\n| Hosted endpoint | no (local only) | `https://api.mailchimp.com/3.0` |\n| Transports | HTTP, Streamable HTTP | HTTP |\n| Auth | OAuth or key | OAuth or key |\n| Pricing | Paid | Freemium |\n| x402 | no | no |\n| Licence | Proprietary service under ActiveCampaign's terms of service and API licence agreement | Proprietary service under Mailchimp's Standard Terms of Use and API Use Policy. The generated client libraries declare Apache-2.0 in their package metadata |\n| Tools exposed | 50 | none |\n| Read-only variant documented | no | no |\n| llms.txt | yes | yes |\n| Last release | 2026-09-02 | 2026-10-05 |\n| Terms last updated | 2025-12-23 | no date given |\n| Privacy policy last updated | 2026-10-01 | 2026-03-09 |\n| Customer content may train models | yes | yes |\n| Terms restrict automated access | yes | not found in the text |\n| Terms restrict benchmarking | not found in the text | not found in the text |\n| Terms or service can change without notice | yes | yes |\n| Arbitration or class-action waiver | yes | yes |\n| Popularity | none | 278k npm/wk, 111k PyPI/wk |\n\n## Verdicts\n\n**ActiveCampaign.** The v3 REST API covers contacts, segments, campaign scheduling and bulk import, with OpenAPI 3.1 definitions inside public Markdown reference pages and documented Retry-After on 429s. Each user has one unscoped API key, the limit is 5 requests a second, and no changelog was found. The status page shows three critical incidents between 27 July and 28 September 2026.\n\n**Mailchimp Marketing API.** A public OpenAPI 3.1 file covers all 297 operations, every docs page has a Markdown copy, and responses can be trimmed with `fields`. An API key carries full account access with no read-only option. The quick start's TypeScript package was not on npm on 8 October 2026, and the changelog's newest entry is 19 August 2025.\n\n## Before you call either\n\n### ActiveCampaign\n\n1. Take the base URL from Settings, Developer in the account. Do not build it from the account name, because non-US accounts may not sit on api-us1.com\n2. Use POST /contact/sync to upsert by email, and POST /import/bulk_import for up to 250 contacts, then read each row's outcome from GET /import/info\n3. Page large contact sets with `orders[id]=ASC` and `id_greater`, not `offset`. Unsupported filter and order keys are silently ignored\n4. Check `succeeded` in the body after scheduling, pausing or stopping a campaign. Business-rule failures return 200 with `succeeded` set to 0\n5. Stay under 5 requests a second per account and wait for the Retry-After value on a 429\n\n### Mailchimp Marketing API\n\n1. Send the key or OAuth token as `Authorization: Bearer` to `https://api.mailchimp.com/3.0/`. Treat it as full account access and keep it server-side\n2. Address a contact by the MD5 hash of the lowercase email address, and use PUT on `/lists/{list_id}/members/{subscriber_hash}` so a retry does not create a duplicate\n3. Ask a person before POST `/campaigns/{campaign_id}/actions/send`. Read `/campaigns/{campaign_id}/send-checklist` and use `actions/test` first\n4. Keep to 10 concurrent requests per user, and send large jobs to `/batches`. A 429 names no wait time, so back off and retry\n5. Add `fields=` to every list call and set `count` (default 10, maximum 1,000) with `offset`\n6. Set `is_syncing` to true when loading historical events so they do not trigger automations\n\n## Questions\n\n### Which is better for AI agents, ActiveCampaign or Mailchimp Marketing API?\n\nMailchimp Marketing API scores 57.4 (C) on agent readiness against ActiveCampaign's 50.5 (D), and leads in 5 of 7 scored categories. ActiveCampaign leads on reliability and payments \u0026 pricing.\n\n### Do ActiveCampaign and Mailchimp Marketing API need an API key?\n\nBoth take an API key or an OAuth sign-in.\n\n### Can an agent call ActiveCampaign and Mailchimp Marketing API without installing anything?\n\nNo hosted endpoint is listed for ActiveCampaign. Mailchimp Marketing API has a hosted endpoint at https://api.mailchimp.com/3.0.\n\n\n## For agents\n\n- This comparison as JSON: https://www.anchorterminal.com/compare/activecampaign-vs-mailchimp-marketing.json, and with the fewest tokens: https://www.anchorterminal.com/compare/activecampaign-vs-mailchimp-marketing.min.md\n- Over MCP at https://www.anchorterminal.com/mcp (no key): `compare_tools {\"a\": \"activecampaign\", \"b\": \"mailchimp-marketing\"}`. From a terminal: `anchor compare activecampaign mailchimp-marketing`\n- Each listing in full: https://www.anchorterminal.com/api/v1/tools/activecampaign.json and https://www.anchorterminal.com/api/v1/tools/mailchimp-marketing.json\n\n## Other comparisons with ActiveCampaign or Mailchimp Marketing API\n\n- [ActiveCampaign vs Braze](https://www.anchorterminal.com/compare/activecampaign-vs-braze.md)\n- [ActiveCampaign vs Customer.io](https://www.anchorterminal.com/compare/activecampaign-vs-customer-io.md)\n- [ActiveCampaign vs Iterable](https://www.anchorterminal.com/compare/activecampaign-vs-iterable.md)\n- [ActiveCampaign vs Klaviyo API + MCP](https://www.anchorterminal.com/compare/activecampaign-vs-klaviyo.md)\n- [Braze vs Mailchimp Marketing API](https://www.anchorterminal.com/compare/braze-vs-mailchimp-marketing.md)\n- [Customer.io vs Mailchimp Marketing API](https://www.anchorterminal.com/compare/customer-io-vs-mailchimp-marketing.md)\n- [Iterable vs Mailchimp Marketing API](https://www.anchorterminal.com/compare/iterable-vs-mailchimp-marketing.md)\n- [Klaviyo API + MCP vs Mailchimp Marketing API](https://www.anchorterminal.com/compare/klaviyo-vs-mailchimp-marketing.md)\n", "meta": { "attribution": "Anchor Terminal (https://www.anchorterminal.com)", "docs": "https://www.anchorterminal.com/docs/", "generatedAt": "2026-10-09", "license": "CC-BY-4.0", "method": "https://www.anchorterminal.com/benchmark/", "methodology": "0.4", "openapi": "https://www.anchorterminal.com/openapi.json", "preview": false, "run": "2026-10-01", "runLabel": "October 2026 research run" }, "page": { "breadcrumbs": [ { "name": "Home", "url": "https://www.anchorterminal.com/" }, { "name": "Compare", "url": "https://www.anchorterminal.com/compare/" }, { "name": "ActiveCampaign vs Mailchimp Marketing API", "url": "" } ], "description": "Mailchimp Marketing API scores 57.4 (C) on agent readiness against ActiveCampaign's 50.5 (D), and leads in 5 of 7 scored categories. ActiveCampaign leads on reliability and payments \u0026 pricing. Both do marketing profiles. Category scores, facts, verdicts and agent notes side by…", "facts": [ "ActiveCampaign D 50.5", "Mailchimp Marketing API C 57.4", "scores" ], "h1": "ActiveCampaign vs Mailchimp Marketing API", "image": "https://www.anchorterminal.com/assets/og/compare-activecampaign-vs-mailchimp-marketing.png", "path": "/compare/activecampaign-vs-mailchimp-marketing", "published": "2026-10-01", "section": "tools", "title": "ActiveCampaign vs Mailchimp Marketing API for AI agents", "toc": null, "updated": "2026-10-09", "url": "https://www.anchorterminal.com/compare/activecampaign-vs-mailchimp-marketing" }, "tokens": { "markdown": 2250, "slim": 730 }, "version": 1 }