{ "data": { "a": { "slug": "iterable", "name": "Iterable", "vendor": "Iterable, Inc.", "vendorUrl": "https://iterable.com", "kind": "http-api", "category": "lifecycle-marketing", "summary": "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.", "url": "https://www.anchorterminal.com/tools/iterable", "markdownUrl": "https://www.anchorterminal.com/tools/iterable.md", "slimMarkdownUrl": "https://www.anchorterminal.com/tools/iterable.min.md", "jsonUrl": "https://www.anchorterminal.com/api/v1/tools/iterable.json", "repo": "https://github.com/Iterable/mcp-server", "license": "Proprietary service under Iterable's Master Services Agreement. The MCP server (@iterable/mcp) and the TypeScript API client (@iterable/api) are MIT", "transports": [ "http", "stdio" ], "remoteUrl": "https://api.iterable.com", "packages": [ { "registry": "npm", "name": "@iterable/mcp" }, { "registry": "npm", "name": "@iterable/api" } ], "auth": "api-key", "authNotes": "Access needs an Iterable customer account, which is sold through sales. A project member creates an API key in the app and sends it in the `Api-Key` header. The specification names five key types (Server-side, Read-only, Mobile, Web, JavaScript) and lists which types each operation accepts. 148 of 159 operations accept a server-side key and 30 accept a read-only key. No OAuth, app review or partner approval was found. The MCP server reads the same key from the system keychain or `ITERABLE_API_KEY`, and adds its own flags for PII, writes and sends. The key guide on the support centre couldn't be read, so rotation and expiry are unchecked.", "pricing": "paid", "pricingNotes": "No public prices. https://iterable.com/pricing/ redirects to the home page, whose button asks for a demo, and no trial, free tier or self-serve signup was found. The MCP server README mentions sandbox projects, which exist inside a customer organisation, so an agent can't start without a contract. API and MCP calls aren't priced per call in any page we read (checked 2026-10-08).", "priceSummary": "Paid", "where": "both", "x402": { "level": "no", "evidence": "No x402, MPP or L402 in the API specification, the MCP server repository or the legal pages (checked 2026-10-08).", "endpoints": [] }, "toolCount": 118, "popularity": { "githubStars": 15, "npmWeekly": 4178, "pypiWeekly": null, "asOf": "2026-10-08" }, "docsUrl": "https://api.iterable.com/api/docs", "llmsTxt": "https://iterable.com/llms.txt", "openapi": "https://api.iterable.com/api-docs", "capabilities": [ "marketing.profiles", "marketing.events", "marketing.segments", "marketing.campaigns", "marketing.journeys", "email.templates" ], "tags": [ "official", "hosted", "mcp", "api-key", "openapi", "closed-source", "sales-led", "eu-region", "typescript", "status-page", "soc2", "beta-mcp" ], "lastRelease": "2026-09-30", "graded": true, "anchor": { "graded": true, "score": 55.2, "grade": "C", "agentReady": false, "rank": 457, "ranked": true, "rankOf": 629, "categoryRank": 4, "methodology": "0.4", "run": "2026-10-01", "scores": { "ergonomics": 57, "maintenance": 75, "payments": 0, "reliability": 66, "schema": 65, "security": 55, "transparency": 68 }, "pending": [ "performance", "tasks" ], "assessment": { "confidence": "medium", "date": "2026-10-08" }, "negative": 0, "verdict": "The REST API publishes a Swagger 2.0 contract with 159 operations, typed API keys including a read-only type, and per-endpoint rate limits. The MCP server starts read-only, with PII, writes and sends each switched on separately. No price, trial or self-serve signup is published, and the support centre, which holds the API guides, refused automated readers.", "bestFor": "A team already on Iterable that wants an agent to read campaigns, templates and metrics, or to update profiles, track events and trigger sends under review.", "strengths": [ "Public Swagger 2.0 specification at api.iterable.com/api-docs with 159 operations and 210 schemas, the same for the EU data centre", "Each operation lists the key types it accepts (Server-side, Read-only, Mobile, Web, JavaScript), and 30 operations accept a read-only key", "The MCP server exposes 31 read tools by default. PII, writes and sends are three separate flags stored per key", "53 operations state a numeric rate limit, for example 500 requests a second per project on `POST /api/users/update`", "SOC 2 Type 2, ISO 27001 and HIPAA listed on the trust centre, and a sub-processor list with locations updated August 2026" ], "weaknesses": [ "No public price, trial or self-serve signup. iterable.com/pricing redirects to the home page, which asks for a demo", "No idempotency keys in the specification, and only 6 of 159 operations document a 429 response", "The MCP server is in beta under terms that allow change or withdrawal without notice, and carries no tool annotations", "No published SLA or API deprecation policy was found in the Master Services Agreement or the product-specific terms", "The API can create static lists and read list members, but no operation builds a dynamic segment or edits a journey" ], "agentNotes": [ "Send the key in the `Api-Key` header, and use api.eu.iterable.com for projects in the EU data centre", "Wait at least 60 seconds after `POST /api/users/update` before a dependent call such as `POST /api/email/target`, as the specification advises", "Keep the MCP server on its default read-only setup unless a person reviews each call. Writes and sends act on real users and can't be undone", "Pass `suppressionListIds` to `POST /api/campaigns/create`. Global suppression lists aren't added automatically", "Read `rateLimitReset` in the 429 `params` on user update calls for the seconds to wait. List member reads allow 5 requests a minute per project" ], "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": 55.2 } ], "editorialScores": { "ergonomics": 57, "maintenance": 75, "payments": 0, "reliability": 66, "schema": 65, "security": 55, "transparency": 57 }, "provenanceScore": 79 }, "connect": { "install": "npx @iterable/mcp setup", "claudeCode": "claude mcp add iterable -- npx -y @iterable/mcp", "config": { "mcpServers": { "iterable": { "args": [ "-y", "@iterable/mcp" ], "command": "npx" } } } }, "letme": { "capability": "https://letme.dev/marketing.profiles", "tool": "https://letme.dev/iterable" }, "area": "communication", "provenance": { "legalEntity": "Iterable, Inc.", "domain": "iterable.com", "domainRegistered": "2011-12-28", "endpointOnVendorDomain": true, "terms": "https://iterable.com/legal/terms/", "privacy": "https://iterable.com/legal/privacy-policy/", "statusPage": "https://status.iterable.com", "changelog": "", "securityTxt": "none", "checked": "2026-10-08", "notes": [ "The Master Services Agreement (last updated 8 June 2026) names Iterable, Inc., a Delaware corporation. The privacy notice gives 201 Spear Street, Suite 1050, San Francisco, CA 94105.", "The website terms of service are dated 6 May 2021 and the privacy notice 14 July 2023.", "The API answers at api.iterable.com and api.eu.iterable.com, both on the vendor's domain.", "iterable.com/.well-known/security.txt and app.iterable.com/.well-known/security.txt return 404. Reports go through the responsible disclosure policy or security@iterable.com.", "No changelog URL is recorded because the release notes sit on support.iterable.com, which answered with a Cloudflare check.", "RDAP for iterable.com gives a registration date of 2011-12-28." ], "score": 79 }, "pageJsonUrl": "https://www.anchorterminal.com/tools/iterable.json", "live": { "slug": "iterable", "probe": { "target": "https://api.iterable.com", "method": "get", "lastAt": "2026-10-08T18:20:32.193580217Z", "lastOk": true, "lastStatus": 200, "lastMs": 544, "authRequired": false, "uptime24h": 100, "uptime30d": 100, "p50ms24h": 531, "p95ms24h": 630, "samples24h": 33, "samples30d": 33, "days": [ { "date": "2026-10-08", "probes": 33, "ok": 33 } ] }, "vendorStatus": { "page": "https://status.iterable.com", "indicator": "none", "summary": "All Systems Operational", "checkedAt": "2026-10-08T18:22:04.723750839Z" }, "versions": [ { "registry": "github", "name": "Iterable/mcp-server", "version": "v1.9.0", "released": "2026-09-30", "seenAt": "2026-10-08T16:17:13.579373494Z" }, { "registry": "npm", "name": "@iterable/api", "version": "0.13.0", "seenAt": "2026-10-08T16:17:13.325775553Z" }, { "registry": "npm", "name": "@iterable/mcp", "version": "1.9.0", "seenAt": "2026-10-08T16:17:09.206564109Z" } ], "githubStars": 15, "npmWeekly": 4178, "securityTxt": { "url": "https://iterable.com/.well-known/security.txt", "state": "none", "checkedAt": "2026-10-08T15:38:44.079638167Z" }, "pages": [ { "url": "https://iterable.com/pricing/", "kind": "pricing", "status": 200, "checkedAt": "2026-10-08T18:21:06.907655734Z", "changedAt": "0001-01-01T00:00:00Z", "fingerprint": "ff0025e6b74a" }, { "url": "https://iterable.com/legal/privacy-policy/", "kind": "privacy", "status": 200, "checkedAt": "2026-10-08T18:21:02.768125484Z", "changedAt": "0001-01-01T00:00:00Z", "fingerprint": "919d5d7bffa8" }, { "url": "https://iterable.com/legal/terms/", "kind": "terms", "status": 200, "checkedAt": "2026-10-08T18:21:04.92865919Z", "changedAt": "0001-01-01T00:00:00Z", "fingerprint": "8a2a6f05a6e1" } ], "updatedAt": "2026-10-08T18:22:04.723750839Z" } }, "answer": "Klaviyo API + MCP scores 71.7 (BB) on agent readiness against Iterable's 55.2 (C), and leads in every scored category.", "b": { "slug": "klaviyo", "name": "Klaviyo API + MCP", "vendor": "Klaviyo, Inc.", "vendorUrl": "https://www.klaviyo.com", "kind": "http-api", "category": "lifecycle-marketing", "summary": "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.", "url": "https://www.anchorterminal.com/tools/klaviyo", "markdownUrl": "https://www.anchorterminal.com/tools/klaviyo.md", "slimMarkdownUrl": "https://www.anchorterminal.com/tools/klaviyo.min.md", "jsonUrl": "https://www.anchorterminal.com/api/v1/tools/klaviyo.json", "repo": "https://github.com/klaviyo/openapi", "license": "Proprietary service under Klaviyo's terms of service and API terms. The OpenAPI repository and the klaviyo-api SDKs are MIT", "transports": [ "http", "streamable-http", "stdio" ], "remoteUrl": "https://a.klaviyo.com", "packages": [ { "registry": "pypi", "name": "klaviyo-api" }, { "registry": "npm", "name": "klaviyo-api" }, { "registry": "pypi", "name": "klaviyo-mcp-server" } ], "auth": "mixed", "authNotes": "Access is self-serve. An Owner, Admin or Manager creates a private key under Settings, API keys, as read-only, full or custom with per-API scopes, and sends it as `Authorization: Klaviyo-API-Key \u003ckey\u003e` with a `revision` header. A key's scopes can't be edited later. OAuth apps use the authorisation code grant with PKCE and scopes such as `profiles:read`, and need Klaviyo's app review only to be listed in the App Marketplace. The hosted MCP server takes OAuth with dynamic client registration, and the local one takes a private key.", "pricing": "freemium", "pricingNotes": "Free plan with up to 250 active profiles, 500 email sends and $5 of mobile messages a month, with no time limit, so an agent's owner can start without a contract. Paid plans scale with active profiles through a calculator, from $20 a month for email at 251 to 500 profiles per the page's structured data. API calls aren't metered. Test accounts are free to create but are billed like any account (https://www.klaviyo.com/pricing, checked 2026-10-08).", "priceSummary": "$20 / mo", "where": "both", "x402": { "level": "no", "evidence": "No x402, MPP or L402 in the developer docs, the OpenAPI spec or the pricing page (checked 2026-10-08).", "endpoints": [] }, "toolCount": 274, "popularity": { "githubStars": null, "npmWeekly": 152521, "pypiWeekly": 73844, "asOf": "2026-10-08" }, "docsUrl": "https://developers.klaviyo.com/en", "llmsTxt": "https://www.klaviyo.com/llms.txt", "openapi": "https://raw.githubusercontent.com/klaviyo/openapi/main/openapi/stable.json", "capabilities": [ "marketing.profiles", "marketing.events", "marketing.segments", "marketing.campaigns", "marketing.journeys", "email.templates" ], "tags": [ "official", "hosted", "mcp", "closed-source", "oauth", "openapi", "llms-txt", "free-tier", "python", "typescript", "php", "ruby", "status-page", "soc2", "webhooks" ], "lastRelease": "2026-07-15", "graded": true, "anchor": { "graded": true, "score": 71.7, "grade": "BB", "agentReady": true, "rank": 98, "ranked": true, "rankOf": 629, "categoryRank": 2, "methodology": "0.4", "run": "2026-10-01", "scores": { "ergonomics": 78, "maintenance": 77, "payments": 25, "reliability": 67, "schema": 87, "security": 84, "transparency": 79 }, "pending": [ "performance", "tasks" ], "assessment": { "confidence": "medium", "date": "2026-10-08" }, "negative": 0, "verdict": "The REST API has a public OpenAPI 3 description of 345 operations, scoped keys and OAuth, and dated revisions supported for two years. The hosted MCP server lists 274 tools with a read-only switch. No approval step before a campaign send was found in the reviewed documentation, and no SLA is published.", "bestFor": "Consumer brands already on Klaviyo that want an agent to read campaign and flow results, manage profiles, events and segments, and draft campaigns.", "strengths": [ "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", "Private keys can be read-only, full or custom per API, and OAuth tokens carry `resource:access` scopes with PKCE", "Each dated revision is stable for one year and deprecated for one more before retirement, with a changelog that marks breaking changes", "The hosted MCP server has `read-only`, `toolsets`, `core-tools-only` and `disable-tools-with-user-generated-content` switches", "A free plan with 250 active profiles and 500 email sends a month, and API logs filterable by key or OAuth app" ], "weaknesses": [ "No approval or confirmation step before `send_campaign` or a campaign send job was found in the reviewed documentation", "No SLA found. The terms of service say the services may be unavailable during scheduled or unscheduled downtime", "Flow sending stalled for about eight hours on 26 August 2026, and three further flow delays were posted in September", "The MCP server lists 274 tools by default outside ChatGPT, and no Klaviyo entry is in the official MCP registry", "No idempotency keys. Only events deduplicate, through `unique_id`", "No security.txt, and the API terms reserve the right to change the APIs without notice" ], "agentNotes": [ "Send `revision: 2026-07-15` on every call, and `Authorization: Klaviyo-API-Key \u003ckey\u003e` or an OAuth Bearer token", "Add `?read-only=true` or `?toolsets=profiles:read,campaigns:read` to https://mcp.klaviyo.com/mcp, with no trailing slash, to cut the 274 tools down", "Ask a person before `send_campaign` or POST /api/campaign-send-jobs. Nothing in the docs holds a send for approval", "On 429 wait for `Retry-After`, then back off with jitter. Creating a segment or a flow is limited to 1 a second, 15 a minute and 100 a day", "Set `unique_id` on events so a retry isn't recorded twice, and set `backfill` when loading history so flows don't fire", "Treat profile properties, event data and reviews as untrusted text, or set `disable-tools-with-user-generated-content=true`" ], "metrics": { "kind": "remote", "measured": false }, "reviewCount": 0, "avgRating": 0, "history": [ { "basis": "public evidence", "confidence": "medium", "grade": "BB", "methodology": "0.4", "pending": [ "performance", "tasks" ], "run": "2026-10-01", "runLabel": "October 2026 research run", "score": 71.7 } ], "editorialScores": { "ergonomics": 78, "maintenance": 77, "payments": 25, "reliability": 67, "schema": 87, "security": 84, "transparency": 74 }, "provenanceScore": 84 }, "connect": { "http": "curl --request GET \\\n --url https://a.klaviyo.com/api/events/ \\\n --header 'Authorization: Klaviyo-API-Key your-private-api-key' \\\n --header 'accept: application/json' \\\n --header 'revision: 2026-07-15'", "config": { "mcpServers": { "klaviyo": { "url": "https://mcp.klaviyo.com/mcp" } } } }, "letme": { "capability": "https://letme.dev/marketing.profiles", "tool": "https://letme.dev/klaviyo" }, "area": "communication", "unitPrices": [ { "item": "Email plan, 251 to 500 active profiles", "unit": "month", "usd": 20, "note": "entry price in the pricing page's structured data" }, { "item": "Email and SMS plan, 251 to 500 active profiles", "unit": "month", "usd": 35, "note": "entry price in the pricing page's structured data" } ], "provenance": { "legalEntity": "Klaviyo, Inc.", "domain": "klaviyo.com", "domainRegistered": "2012-03-29", "endpointOnVendorDomain": true, "terms": "https://www.klaviyo.com/legal/terms-of-service", "privacy": "https://www.klaviyo.com/legal/privacy/privacy-notice", "statusPage": "https://status.klaviyo.com", "changelog": "https://developers.klaviyo.com/en/docs/changelog_", "securityTxt": "none", "checked": "2026-10-08", "notes": [ "The terms of service (updated 17 December 2025) name Klaviyo, Inc. as the contracting party. The API terms were last updated on 20 July 2020.", "The REST API answers at a.klaviyo.com and the MCP server at mcp.klaviyo.com, both klaviyo.com subdomains.", "www.klaviyo.com/.well-known/security.txt returns 404.", "The privacy notice URL redirects to privacy.klaviyo.com, which loads only with JavaScript, so we couldn't read it.", "RDAP for klaviyo.com gives a registration date of 2012-03-29." ], "score": 84 }, "pageJsonUrl": "https://www.anchorterminal.com/tools/klaviyo.json", "live": { "slug": "klaviyo", "probe": { "target": "https://a.klaviyo.com", "method": "get", "lastAt": "2026-10-08T18:20:32.478711963Z", "lastOk": true, "lastStatus": 200, "lastMs": 471, "authRequired": false, "uptime24h": 100, "uptime30d": 100, "p50ms24h": 534, "p95ms24h": 729, "samples24h": 33, "samples30d": 33, "days": [ { "date": "2026-10-08", "probes": 33, "ok": 33 } ] }, "vendorStatus": { "page": "https://status.klaviyo.com", "indicator": "none", "summary": "All Systems Operational", "checkedAt": "2026-10-08T18:22:06.274712724Z" }, "versions": [ { "registry": "github", "name": "klaviyo/openapi", "version": "v2", "released": "2022-11-16", "seenAt": "2026-10-08T16:17:53.207333725Z" }, { "registry": "npm", "name": "klaviyo-api", "version": "23.0.0", "seenAt": "2026-10-08T16:17:49.719568487Z" }, { "registry": "pypi", "name": "klaviyo-api", "version": "24.0.0", "released": "2026-07-15", "seenAt": "2026-10-08T16:17:49.529842574Z" }, { "registry": "pypi", "name": "klaviyo-mcp-server", "version": "0.4.1", "released": "2026-03-05", "seenAt": "2026-10-08T16:17:53.127386423Z" } ], "githubStars": 21, "npmWeekly": 152521, "pypiWeekly": 73844, "securityTxt": { "url": "https://klaviyo.com/.well-known/security.txt", "state": "none", "checkedAt": "2026-10-08T15:38:58.45995502Z" }, "pages": [ { "url": "https://developers.klaviyo.com/en/docs/changelog_", "kind": "changelog", "status": 200, "checkedAt": "2026-10-08T18:17:48.075039972Z", "changedAt": "0001-01-01T00:00:00Z", "fingerprint": "af6f91e28a48" } ], "updatedAt": "2026-10-08T18:22:06.274712724Z" } }, "facts": [ { "a": "HTTP API", "b": "HTTP API", "name": "Kind" }, { "a": "Iterable, Inc.", "b": "Klaviyo, Inc.", "name": "Vendor" }, { "a": "https://api.iterable.com", "b": "https://a.klaviyo.com", "name": "Hosted endpoint" }, { "a": "HTTP, stdio", "b": "HTTP, Streamable HTTP, stdio", "name": "Transports" }, { "a": "API key", "b": "OAuth or key", "name": "Auth" }, { "a": "Paid", "b": "Freemium", "name": "Pricing" }, { "a": "not published", "b": "$20 per month (plan)", "name": "Price for marketing profiles" }, { "a": "no", "b": "no", "name": "x402" }, { "a": "Proprietary service under Iterable's Master Services Agreement. The MCP server (@iterable/mcp) and the TypeScript API client (@iterable/api) are MIT", "b": "Proprietary service under Klaviyo's terms of service and API terms. The OpenAPI repository and the klaviyo-api SDKs are MIT", "name": "Licence" }, { "a": "118", "b": "274", "name": "Tools exposed" }, { "a": "yes", "b": "yes", "name": "Read-only variant documented" }, { "a": "yes", "b": "yes", "name": "llms.txt" }, { "a": "2026-09-30", "b": "2026-07-15", "name": "Last release" }, { "a": "2021-05-06", "b": "2025-12-17", "name": "Terms last updated" }, { "a": "2023-01-01", "b": "couldn't be read", "name": "Privacy policy last updated" }, { "a": "not found in the text", "b": "not found in the text", "name": "Customer content may train models" }, { "a": "not found in the text", "b": "not found in the text", "name": "Terms restrict automated access" }, { "a": "not found in the text", "b": "yes", "name": "Terms restrict benchmarking" }, { "a": "not found in the text", "b": "not found in the text", "name": "Terms or service can change without notice" }, { "a": "yes", "b": "not found in the text", "name": "Arbitration or class-action waiver" }, { "a": "15 stars, 4.2k npm/wk", "b": "153k npm/wk, 74k PyPI/wk", "name": "Popularity" } ], "faq": [ { "answer": "Klaviyo API + MCP scores 71.7 (BB) on agent readiness against Iterable's 55.2 (C), and leads in every scored category.", "question": "Which is better for AI agents, Iterable or Klaviyo API + MCP?" }, { "answer": "Iterable needs an API key. Klaviyo API + MCP takes an API key or an OAuth sign-in.", "question": "Do Iterable and Klaviyo API + MCP need an API key?" }, { "answer": "Yes. Iterable has a hosted endpoint at https://api.iterable.com and Klaviyo API + MCP at https://a.klaviyo.com.", "question": "Can an agent call Iterable and Klaviyo API + MCP without installing anything?" } ], "goodFor": [ { "aheadOn": null, "also": null, "goodFor": "A team already on Iterable that wants an agent to read campaigns, templates and metrics, or to update profiles, track events and trigger sends under review.", "slug": "iterable", "watchFor": "No public price, trial or self-serve signup. iterable.com/pricing redirects to the home page, which asks for a demo" }, { "aheadOn": [ "Schema \u0026 documentation, 87 against 65", "Agent ergonomics, 78 against 57", "Security \u0026 auth, 84 against 55", "Payments \u0026 pricing, 25 against 0", "Transparency \u0026 trust, 79 against 68" ], "also": [ "Agent-ready, a grade of BB or better" ], "goodFor": "Consumer brands already on Klaviyo that want an agent to read campaign and flow results, manage profiles, events and segments, and draft campaigns.", "slug": "klaviyo", "watchFor": "No approval or confirmation step before `send_campaign` or a campaign send job was found in the reviewed documentation" } ], "job": { "capability": "marketing.profiles", "name": "Marketing profiles" }, "others": [ { "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-iterable.json", "title": "Braze vs Iterable", "url": "https://www.anchorterminal.com/compare/braze-vs-iterable" }, { "json": "https://www.anchorterminal.com/compare/braze-vs-klaviyo.json", "title": "Braze vs Klaviyo API + MCP", "url": "https://www.anchorterminal.com/compare/braze-vs-klaviyo" }, { "json": "https://www.anchorterminal.com/compare/customer-io-vs-iterable.json", "title": "Customer.io vs Iterable", "url": "https://www.anchorterminal.com/compare/customer-io-vs-iterable" }, { "json": "https://www.anchorterminal.com/compare/customer-io-vs-klaviyo.json", "title": "Customer.io vs Klaviyo API + MCP", "url": "https://www.anchorterminal.com/compare/customer-io-vs-klaviyo" } ], "scores": [ { "by": 1, "edge": "klaviyo", "iterable": 66, "key": "reliability", "klaviyo": 67, "name": "Reliability", "weight": 16 }, { "key": "performance", "name": "Performance", "pending": true, "weight": 10 }, { "by": 22, "edge": "klaviyo", "iterable": 65, "key": "schema", "klaviyo": 87, "name": "Schema \u0026 documentation", "weight": 13 }, { "by": 21, "edge": "klaviyo", "iterable": 57, "key": "ergonomics", "klaviyo": 78, "name": "Agent ergonomics", "weight": 13 }, { "by": 29, "edge": "klaviyo", "iterable": 55, "key": "security", "klaviyo": 84, "name": "Security \u0026 auth", "weight": 14 }, { "by": 25, "edge": "klaviyo", "iterable": 0, "key": "payments", "klaviyo": 25, "name": "Payments \u0026 pricing", "weight": 10 }, { "key": "tasks", "name": "Task success", "pending": true, "weight": 10 }, { "by": 2, "edge": "klaviyo", "iterable": 75, "key": "maintenance", "klaviyo": 77, "name": "Maintenance \u0026 community", "weight": 7 }, { "by": 11, "edge": "klaviyo", "iterable": 68, "key": "transparency", "klaviyo": 79, "name": "Transparency \u0026 trust", "weight": 7 } ], "summary": "Klaviyo API + MCP scores 71.7 (BB) on agent readiness against Iterable's 55.2 (C), and leads in every scored category. Both do marketing profiles.", "verdicts": { "iterable": "The REST API publishes a Swagger 2.0 contract with 159 operations, typed API keys including a read-only type, and per-endpoint rate limits. The MCP server starts read-only, with PII, writes and sends each switched on separately. No price, trial or self-serve signup is published, and the support centre, which holds the API guides, refused automated readers.", "klaviyo": "The REST API has a public OpenAPI 3 description of 345 operations, scoped keys and OAuth, and dated revisions supported for two years. The hosted MCP server lists 274 tools with a read-only switch. No approval step before a campaign send was found in the reviewed documentation, and no SLA is published." } }, "kind": "anchor.page", "links": { "api": "https://www.anchorterminal.com/api/v1/index.json", "html": "https://www.anchorterminal.com/compare/iterable-vs-klaviyo", "json": "https://www.anchorterminal.com/compare/iterable-vs-klaviyo.json", "llms": "https://www.anchorterminal.com/llms.txt", "markdown": "https://www.anchorterminal.com/compare/iterable-vs-klaviyo.md", "slim": "https://www.anchorterminal.com/compare/iterable-vs-klaviyo.min.md" }, "markdown": "Klaviyo API + MCP scores 71.7 (BB) on agent readiness against Iterable's 55.2 (C), and leads in every scored category. Both do marketing profiles.\n\n- Iterable: grade C, 55.2/100, rank #457 of 629. Markdown https://www.anchorterminal.com/tools/iterable.md · JSON https://www.anchorterminal.com/api/v1/tools/iterable.json\n- Klaviyo API + MCP: grade BB, 71.7/100, rank #98 of 629. Markdown https://www.anchorterminal.com/tools/klaviyo.md · JSON https://www.anchorterminal.com/api/v1/tools/klaviyo.json\n\n## Which one, for what\n\n### Iterable (C)\n\nGood for: A team already on Iterable that wants an agent to read campaigns, templates and metrics, or to update profiles, track events and trigger sends under review.\n\nWatch for: No public price, trial or self-serve signup. iterable.com/pricing redirects to the home page, which asks for a demo\n\n### Klaviyo API + MCP (BB)\n\nGood for: Consumer brands already on Klaviyo that want an agent to read campaign and flow results, manage profiles, events and segments, and draft campaigns.\n\nAhead on:\n- Schema \u0026 documentation, 87 against 65\n- Agent ergonomics, 78 against 57\n- Security \u0026 auth, 84 against 55\n- Payments \u0026 pricing, 25 against 0\n- Transparency \u0026 trust, 79 against 68\n\nAlso in its favour:\n- Agent-ready, a grade of BB or better\n\nWatch for: No approval or confirmation step before `send_campaign` or a campaign send job was found in the reviewed documentation\n\n\n## Score by category\n\n| Category | Weight | Iterable | Klaviyo API + MCP | Edge |\n| --- | --- | --- | --- | --- |\n| Reliability | 16% (20 this run) | 66 | 67 | Klaviyo API + MCP +1 |\n| Performance | 10%, pending | pending | pending | not scored in this run |\n| Schema \u0026 documentation | 13% (16.2 this run) | 65 | 87 | Klaviyo API + MCP +22 |\n| Agent ergonomics | 13% (16.2 this run) | 57 | 78 | Klaviyo API + MCP +21 |\n| Security \u0026 auth | 14% (17.5 this run) | 55 | 84 | Klaviyo API + MCP +29 |\n| Payments \u0026 pricing | 10% (12.5 this run) | 0 | 25 | Klaviyo API + MCP +25 |\n| Task success | 10%, pending | pending | pending | not scored in this run |\n| Maintenance \u0026 community | 7% (8.8 this run) | 75 | 77 | Klaviyo API + MCP +2 |\n| Transparency \u0026 trust | 7% (8.8 this run) | 68 | 79 | Klaviyo API + MCP +11 |\n| Negative events | ≤15 | 0 | 0 | |\n| **Total** | | **55.2 · C** | **71.7 · BB** | |\n\n## Facts side by side\n\n| Fact | Iterable | Klaviyo API + MCP |\n| --- | --- | --- |\n| Kind | HTTP API | HTTP API |\n| Vendor | Iterable, Inc. | Klaviyo, Inc. |\n| Hosted endpoint | `https://api.iterable.com` | `https://a.klaviyo.com` |\n| Transports | HTTP, stdio | HTTP, Streamable HTTP, stdio |\n| Auth | API key | OAuth or key |\n| Pricing | Paid | Freemium |\n| Price for marketing profiles | not published | $20 per month (plan) |\n| x402 | no | no |\n| Licence | Proprietary service under Iterable's Master Services Agreement. The MCP server (@iterable/mcp) and the TypeScript API client (@iterable/api) are MIT | Proprietary service under Klaviyo's terms of service and API terms. The OpenAPI repository and the klaviyo-api SDKs are MIT |\n| Tools exposed | 118 | 274 |\n| Read-only variant documented | yes | yes |\n| llms.txt | yes | yes |\n| Last release | 2026-09-30 | 2026-07-15 |\n| Terms last updated | 2021-05-06 | 2025-12-17 |\n| Privacy policy last updated | 2023-01-01 | couldn't be read |\n| Customer content may train models | not found in the text | not found in the text |\n| Terms restrict automated access | not found in the text | not found in the text |\n| Terms restrict benchmarking | not found in the text | yes |\n| Terms or service can change without notice | not found in the text | not found in the text |\n| Arbitration or class-action waiver | yes | not found in the text |\n| Popularity | 15 stars, 4.2k npm/wk | 153k npm/wk, 74k PyPI/wk |\n\n## Verdicts\n\n**Iterable.** The REST API publishes a Swagger 2.0 contract with 159 operations, typed API keys including a read-only type, and per-endpoint rate limits. The MCP server starts read-only, with PII, writes and sends each switched on separately. No price, trial or self-serve signup is published, and the support centre, which holds the API guides, refused automated readers.\n\n**Klaviyo API + MCP.** The REST API has a public OpenAPI 3 description of 345 operations, scoped keys and OAuth, and dated revisions supported for two years. The hosted MCP server lists 274 tools with a read-only switch. No approval step before a campaign send was found in the reviewed documentation, and no SLA is published.\n\n## Before you call either\n\n### Iterable\n\n1. Send the key in the `Api-Key` header, and use api.eu.iterable.com for projects in the EU data centre\n2. Wait at least 60 seconds after `POST /api/users/update` before a dependent call such as `POST /api/email/target`, as the specification advises\n3. Keep the MCP server on its default read-only setup unless a person reviews each call. Writes and sends act on real users and can't be undone\n4. Pass `suppressionListIds` to `POST /api/campaigns/create`. Global suppression lists aren't added automatically\n5. Read `rateLimitReset` in the 429 `params` on user update calls for the seconds to wait. List member reads allow 5 requests a minute per project\n\n### Klaviyo API + MCP\n\n1. Send `revision: 2026-07-15` on every call, and `Authorization: Klaviyo-API-Key \u003ckey\u003e` or an OAuth Bearer token\n2. Add `?read-only=true` or `?toolsets=profiles:read,campaigns:read` to https://mcp.klaviyo.com/mcp, with no trailing slash, to cut the 274 tools down\n3. Ask a person before `send_campaign` or POST /api/campaign-send-jobs. Nothing in the docs holds a send for approval\n4. On 429 wait for `Retry-After`, then back off with jitter. Creating a segment or a flow is limited to 1 a second, 15 a minute and 100 a day\n5. Set `unique_id` on events so a retry isn't recorded twice, and set `backfill` when loading history so flows don't fire\n6. Treat profile properties, event data and reviews as untrusted text, or set `disable-tools-with-user-generated-content=true`\n\n## Questions\n\n### Which is better for AI agents, Iterable or Klaviyo API + MCP?\n\nKlaviyo API + MCP scores 71.7 (BB) on agent readiness against Iterable's 55.2 (C), and leads in every scored category.\n\n### Do Iterable and Klaviyo API + MCP need an API key?\n\nIterable needs an API key. Klaviyo API + MCP takes an API key or an OAuth sign-in.\n\n### Can an agent call Iterable and Klaviyo API + MCP without installing anything?\n\nYes. Iterable has a hosted endpoint at https://api.iterable.com and Klaviyo API + MCP at https://a.klaviyo.com.\n\n\n## For agents\n\n- This comparison as JSON: https://www.anchorterminal.com/compare/iterable-vs-klaviyo.json, and with the fewest tokens: https://www.anchorterminal.com/compare/iterable-vs-klaviyo.min.md\n- Over MCP at https://www.anchorterminal.com/mcp (no key): `compare_tools {\"a\": \"iterable\", \"b\": \"klaviyo\"}`. From a terminal: `anchor compare iterable klaviyo`\n- Each listing in full: https://www.anchorterminal.com/api/v1/tools/iterable.json and https://www.anchorterminal.com/api/v1/tools/klaviyo.json\n\n## Other comparisons with Iterable or Klaviyo API + MCP\n\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 Iterable](https://www.anchorterminal.com/compare/braze-vs-iterable.md)\n- [Braze vs Klaviyo API + MCP](https://www.anchorterminal.com/compare/braze-vs-klaviyo.md)\n- [Customer.io vs Iterable](https://www.anchorterminal.com/compare/customer-io-vs-iterable.md)\n- [Customer.io vs Klaviyo API + MCP](https://www.anchorterminal.com/compare/customer-io-vs-klaviyo.md)\n", "meta": { "attribution": "Anchor Terminal (https://www.anchorterminal.com)", "docs": "https://www.anchorterminal.com/docs/", "generatedAt": "2026-10-08", "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": "Iterable vs Klaviyo API + MCP", "url": "" } ], "description": "Klaviyo API + MCP scores 71.7 (BB) on agent readiness against Iterable's 55.2 (C), and leads in every scored category. Both do marketing profiles. Category scores, facts, verdicts and agent notes side by side.", "facts": [ "Iterable C 55.2", "Klaviyo API + MCP BB 71.7", "scores" ], "h1": "Iterable vs Klaviyo API + MCP", "image": "https://www.anchorterminal.com/assets/og/compare-iterable-vs-klaviyo.png", "path": "/compare/iterable-vs-klaviyo", "published": "2026-10-01", "section": "tools", "title": "Iterable vs Klaviyo API + MCP for AI agents, C 55.2 vs BB 71.7", "toc": null, "updated": "2026-10-08", "url": "https://www.anchorterminal.com/compare/iterable-vs-klaviyo" }, "tokens": { "markdown": 2100, "slim": 730 }, "version": 1 }