{ "data": { "a": { "slug": "buttercms", "name": "ButterCMS", "vendor": "ButterCMS LLC", "vendorUrl": "https://buttercms.com", "kind": "http-api", "category": "cms", "summary": "ButterCMS is a hosted headless CMS with pages, collections and a blog engine. Agents read content through a REST Read API and create, update, publish and delete it through a REST Write API sold as a paid add-on.", "url": "https://www.anchorterminal.com/tools/buttercms", "markdownUrl": "https://www.anchorterminal.com/tools/buttercms.md", "slimMarkdownUrl": "https://www.anchorterminal.com/tools/buttercms.min.md", "jsonUrl": "https://www.anchorterminal.com/api/v1/tools/buttercms.json", "repo": "https://github.com/ButterCMS/buttercms-js", "license": "Proprietary service under ButterCMS's terms of service. The SDKs and starter projects on GitHub are MIT", "transports": [ "http" ], "remoteUrl": "https://api.buttercms.com/v2", "packages": [ { "registry": "npm", "name": "buttercms" }, { "registry": "pypi", "name": "buttercms-python" } ], "auth": "api-key", "authNotes": "Self-serve for reads, paid add-on for writes. A person signs up in a browser and copies the read token from Settings. The write token exists only after the Write API add-on is bought under Settings, Billing, or enabled by support, and one docs page says this needs verification. The read token goes in the `auth_token` query parameter or an `Authorization: Token` header. The write token is accepted in the header only. There is one token of each kind per account, with no scopes, and the docs say tokens are rotated by contacting support. No OAuth, app review or sales approval for the listed plans.", "pricing": "freemium", "pricingNotes": "The Free plan needs no card and includes 50,000 API calls a month, but not the Write API. Writing needs Advanced ($249 a month, $224 billed yearly) or Professional ($399, $359 billed yearly) plus the Write API add-on, whose price is not published, with 2,000 or 5,000 write calls a month. Enterprise includes it and is sold through sales. Every plan has a 14-day trial (https://buttercms.com/pricing/, checked 2026-10-09).", "priceSummary": "$79 / mo", "where": "hosted", "x402": { "level": "no", "evidence": "No x402, MPP or L402 in the API docs, the OpenAPI files or the pricing page (checked 2026-10-09).", "endpoints": [] }, "toolCount": null, "popularity": { "githubStars": null, "npmWeekly": 6929, "pypiWeekly": null, "asOf": "2026-10-09" }, "docsUrl": "https://buttercms.com/docs/api/overview", "llmsTxt": "https://buttercms.com/docs/llms.txt", "openapi": "https://buttercms.com/docs/api/openapi/openapi.yaml", "capabilities": [ "cms.content", "cms.publish", "cms.assets", "cms.localisation" ], "tags": [ "official", "hosted", "closed-source", "api-key", "openapi", "llms-txt", "webhooks", "free-tier", "no-card", "status-page", "javascript", "python", "php", "ruby" ], "lastRelease": "2025-09-04", "graded": true, "anchor": { "graded": true, "score": 53.3, "grade": "D", "agentReady": false, "rank": 711, "ranked": true, "rankOf": 950, "categoryRank": 14, "methodology": "0.4", "run": "2026-10-01", "scores": { "ergonomics": 64, "maintenance": 27, "payments": 20, "reliability": 83, "schema": 78, "security": 36, "transparency": 51 }, "pending": [ "performance", "tasks" ], "assessment": { "confidence": "medium", "date": "2026-10-09" }, "negative": -2, "negativeNotes": [ "9 October 2026. The docs page on AI tools shows `butter.page.update(...)` as the way to write through the JavaScript SDK. The published SDK 3.0.3 has list, retrieve and search methods only, and the SDK overview says to call REST for writes (https://buttercms.com/docs/build-your-app/third-party-integrations/ai-tools-integration.md, https://github.com/ButterCMS/buttercms-js). 2 points." ], "verdict": "The Read and Write APIs have a public OpenAPI 3.1 file, Markdown docs and a status page with no incident since October 2025. The Write API is a paid add-on from the $249 plan, capped at 2,000 or 5,000 calls a month. Writes answer 202 with no identifier, support rotates tokens, and the terms are an undated website document.", "bestFor": "A team already on a paid ButterCMS plan that wants an agent to draft and publish pages, collection items and blog posts in small volumes.", "strengths": [ "Public OpenAPI 3.1 files for the Read and Write APIs (25 operations, 328 examples), a docs llms.txt and a Markdown copy of every docs page", "status.buttercms.com lists three components and no incident since 20 October 2025", "Writes create drafts unless `status` is `published`, and the write token is separate from the read token and accepted only in a header", "Media fields take a URL and the service copies the file into the media library, so one request creates an entry with its image", "Free plan with no card and 50,000 API calls a month for reading, and dollar prices for four plans on the pricing page" ], "weaknesses": [ "The Write API is a paid add-on on Advanced ($249 a month) and Professional ($399), capped at 2,000 and 5,000 write calls a month. Its price is not published", "Create and update calls answer 202 with `{\"status\": \"pending\"}` and no identifier, and there are no idempotency keys", "One read token and one write token per account, with no scopes. The docs say rotation is done by contacting support", "Page types and collections cannot be created through the API, pages cannot be deleted through it, and it has no version or rollback operation", "The terms are an undated website Terms of Service, the privacy policy dates from 15 August 2022 and covers the website, and a DPA is on request for Enterprise only", "No API changelog or deprecation policy was found. The JavaScript SDK's last release was 3.0.3 on 4 September 2025 and it has no write methods" ], "agentNotes": [ "End every path with a slash. A missing slash returns a 301, and the vendor counts the redirect and the retry as two API calls", "Send the write token only as `Authorization: Token \u003ctoken\u003e`. The `auth_token` query parameter works for reads only", "On page creation send every field key of the page type, with empty strings for fields left blank", "A 202 means queued, not saved. Read the entry back with `preview=1` to confirm, and check a slug exists before retrying a create", "Call the REST API directly for writes. The JavaScript SDK 3.0.3 has list, retrieve and search methods only" ], "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": 53.3 } ], "editorialScores": { "ergonomics": 64, "maintenance": 27, "payments": 20, "reliability": 83, "schema": 78, "security": 36, "transparency": 26 }, "provenanceScore": 76 }, "connect": { "install": "npm install buttercms --save", "http": "curl -H \"Authorization: Token your_api_token\" \\\n \"https://api.buttercms.com/v2/posts/\"" }, "letme": { "capability": "https://letme.dev/cms.content", "tool": "https://letme.dev/buttercms" }, "area": "business", "unitPrices": [ { "item": "Basic", "unit": "month", "usd": 79, "note": "billed monthly, $71 billed yearly, 100,000 API calls, no Write API" }, { "item": "Advanced", "unit": "month", "usd": 249, "note": "billed monthly, $224 billed yearly, 500,000 API calls, Write API add-on priced separately (up to 2,000 write calls)" }, { "item": "Professional", "unit": "month", "usd": 399, "note": "billed monthly, $359 billed yearly, 1M API calls, Write API add-on priced separately (up to 5,000 write calls)" } ], "provenance": { "legalEntity": "ButterCMS LLC", "domain": "buttercms.com", "domainRegistered": "2015-03-24", "endpointOnVendorDomain": true, "terms": "https://buttercms.com/terms/", "privacy": "https://buttercms.com/privacy/", "statusPage": "https://status.buttercms.com", "changelog": "", "securityTxt": "none", "checked": "2026-10-09", "notes": [ "The privacy policy (last modified 15 August 2022) names ButterCMS LLC. The terms name only Butter and ButterCMS, carry no date, give a San Francisco postal address for DMCA notices and choose Michigan law.", "The terms are written as website Terms of Service and define the Website to include the services on it. The Write API's OpenAPI file names this page as its licence, so it is the only published contract for the API. No separate service agreement, API terms or SLA document was found.", "The privacy policy covers information collected on the website and says nothing about content stored in the CMS. The docs say a data processing agreement is available to Enterprise customers on request.", "A status page post about a DNS outage on 9 September 2024 says ButterCMS was acquired by Tiugo Technologies, and the site's careers link goes to Tiugo's recruiting page.", "The API answers at api.buttercms.com and the dashboard at app.buttercms.com.", "buttercms.com/.well-known/security.txt returns 404. The docs give security@buttercms.com for vulnerability reports.", "RDAP for buttercms.com gives a registration date of 2015-03-24 and Amazon Registrar, Inc. as registrar.", "No API changelog was found on the site or in the docs index. The JavaScript SDK repository has a CHANGELOG.md." ], "score": 76 }, "pageJsonUrl": "https://www.anchorterminal.com/tools/buttercms.json", "live": { "slug": "buttercms", "probe": { "target": "https://api.buttercms.com/v2", "method": "get", "lastAt": "2026-10-10T02:54:50.404343333Z", "lastOk": false, "lastStatus": 0, "lastMs": 0, "lastNote": "too many redirects", "authRequired": false, "uptime24h": 0, "uptime30d": 0, "p50ms24h": 0, "p95ms24h": 0, "samples24h": 115, "samples30d": 115, "days": [ { "date": "2026-10-09", "probes": 85, "ok": 0 }, { "date": "2026-10-10", "probes": 30, "ok": 0 } ], "outages": [ { "start": "2026-10-09T15:43:00.096294667Z", "end": "0001-01-01T00:00:00Z", "note": "too many redirects" } ] }, "vendorStatus": { "page": "https://status.buttercms.com", "indicator": "none", "summary": "All Systems Operational", "checkedAt": "2026-10-10T02:49:58.109542255Z" }, "versions": [ { "registry": "github", "name": "ButterCMS/buttercms-js", "version": "v3.0.3", "released": "2025-09-04", "seenAt": "2026-10-09T16:44:18.698940824Z" }, { "registry": "npm", "name": "buttercms", "version": "3.0.3", "seenAt": "2026-10-09T16:44:17.650332238Z" }, { "registry": "pypi", "name": "buttercms-python", "version": "2.1.1", "released": "2024-05-07", "seenAt": "2026-10-09T16:44:18.477928122Z" } ], "githubStars": 164, "npmWeekly": 6929, "pypiWeekly": 1093, "pages": [ { "url": "https://buttercms.com/pricing/", "kind": "pricing", "status": 200, "checkedAt": "2026-10-09T18:33:26.750327748Z", "changedAt": "0001-01-01T00:00:00Z", "fingerprint": "9ba825b44b86" }, { "url": "https://buttercms.com/privacy/", "kind": "privacy", "status": 200, "checkedAt": "2026-10-09T18:33:29.190691009Z", "changedAt": "0001-01-01T00:00:00Z", "fingerprint": "908b6461f1b9" }, { "url": "https://buttercms.com/terms/", "kind": "terms", "status": 200, "checkedAt": "2026-10-09T18:33:31.259657517Z", "changedAt": "0001-01-01T00:00:00Z", "fingerprint": "8862b63c94a5" } ], "updatedAt": "2026-10-10T02:54:50.404343333Z" } }, "answer": "Storyblok scores 67.7 (B) on agent readiness against ButterCMS's 53.3 (D), and leads in 5 of 7 scored categories. ButterCMS leads on schema \u0026 documentation.", "b": { "slug": "storyblok", "name": "Storyblok", "vendor": "Storyblok GmbH", "vendorUrl": "https://www.storyblok.com", "kind": "http-api", "category": "cms", "summary": "Storyblok is a hosted headless CMS with a visual editor. Agents write to it through the Management API (stories, components, assets, releases, workflows) or the official hosted MCP server, which wraps that API in seven tools.", "url": "https://www.anchorterminal.com/tools/storyblok", "markdownUrl": "https://www.anchorterminal.com/tools/storyblok.md", "slimMarkdownUrl": "https://www.anchorterminal.com/tools/storyblok.min.md", "jsonUrl": "https://www.anchorterminal.com/api/v1/tools/storyblok.json", "repo": "https://github.com/storyblok/monoblok", "license": "Proprietary service under Storyblok's terms. The SDKs, API clients and CLI in storyblok/monoblok are MIT", "transports": [ "http", "streamable-http" ], "remoteUrl": "https://mapi.storyblok.com/v1", "packages": [ { "registry": "npm", "name": "@storyblok/management-api-client" }, { "registry": "npm", "name": "storyblok-js-client" }, { "registry": "npm", "name": "storyblok" } ], "auth": "mixed", "authNotes": "Self-serve. The Management API takes a personal access token or an OAuth token in the request header. A person creates the token in account settings and picks scopes (16 groups such as stories, assets and components, on a read, write and publish hierarchy), the spaces it covers and an expiry date. The MCP server uses browser OAuth with PKCE and dynamic client registration, where the person picks permissions and spaces on a consent screen, or the same token as a Bearer header. No app review or sales approval is needed. The changelog describes OAuth scoped grants for custom integrations as a Premium and Enterprise feature. Content Delivery API tokens are read-only and travel in the `token` query parameter.", "pricing": "freemium", "pricingNotes": "Starter is free with no card and includes the Management API, 100,000 API requests a month, 1 seat and 2 locales. Growth is $99 a month and Growth Plus $349 a month billed monthly. Premium and Elite are sold through sales. New spaces start with a 45-day Growth Plus trial. On Growth, extra API requests cost $10 per million and extra seats $15 each (https://www.storyblok.com/pricing, checked 2026-10-07).", "priceSummary": "$99 / mo", "where": "hosted", "x402": { "level": "no", "evidence": "No x402, MPP or L402 in the Management API docs, the MCP server docs or the pricing page (checked 2026-10-07).", "endpoints": [] }, "toolCount": 7, "popularity": { "githubStars": 68, "npmWeekly": 432535, "pypiWeekly": null, "asOf": "2026-10-07" }, "docsUrl": "https://www.storyblok.com/docs/api/management", "llmsTxt": "https://www.storyblok.com/llms.txt", "openapi": "https://www.storyblok.com/docs/openapi-spec/cdn-v2.openapi.yaml", "capabilities": [ "cms.content", "cms.publish", "cms.assets", "cms.localisation", "cms.schema" ], "tags": [ "official", "hosted", "mcp", "oauth", "closed-source", "no-card", "free-tier", "llms-txt", "webhooks", "typescript", "php", "status-page", "iso27001" ], "lastRelease": "2026-10-02", "graded": true, "anchor": { "graded": true, "score": 67.7, "grade": "B", "agentReady": false, "rank": 244, "ranked": true, "rankOf": 950, "categoryRank": 6, "methodology": "0.4", "run": "2026-10-01", "scores": { "ergonomics": 78, "maintenance": 80, "payments": 35, "reliability": 79, "schema": 68, "security": 73, "transparency": 80 }, "pending": [ "performance", "tasks" ], "assessment": { "confidence": "medium", "date": "2026-10-07" }, "negative": -3, "negativeNotes": [ "8 April 2026. Storyblok fixed a flaw where the Webhook and Webhook Logs endpoints of the Management API didn't enforce the Admin and Owner restriction the UI applies, so Editor and Restricted roles could manage webhooks by API. It was fixed and disclosed in the changelog, so the deduction is small (https://www.storyblok.com/cl/2026-april-security-fix-webhook-api-now-aligned-with-ui-access-controls)." ], "verdict": "The hosted MCP server covers the whole Management API with seven tools, OAuth scopes split into read, write and publish per space, and a confirmation step on deletes. The Management API has no public OpenAPI spec, no idempotency keys and no monitor on the public status page, and publishing is a GET request.", "bestFor": "Teams already on Storyblok who want an agent to draft, translate and publish stories or change component schemas under scoped, per-space permissions.", "strengths": [ "Official hosted MCP server at mcp.storyblok.com/mcp with seven tools (search, describe, three execute tools, two for asset upload) and a `fields` filter that trims responses", "OAuth with PKCE, dynamic client registration and 29 scopes on a read, write and publish hierarchy, chosen per space on a consent screen", "Personal access tokens take scopes, a space list and an expiry date since 27 May 2026, and unscoped tokens are revoked on 30 November 2026", "Free Starter plan with no card, 100,000 API requests a month and Management API access on every plan", "Every docs page is served as Markdown by adding .md, with request examples in nine languages" ], "weaknesses": [ "The Management API's OpenAPI spec sits in a private repository. Only the Content Delivery API has a public spec (OpenAPI 3.1, 14 operations)", "Management API limit is 3 requests a second on Starter and 6 on paid plans, with no idempotency keys in the reviewed documentation", "The status page monitors four delivery services and has no Management API or MCP monitor", "On 8 April 2026 Storyblok fixed webhook endpoints that had let Editor and Restricted roles manage webhooks through the API", "Version history is kept for 1 day on Starter and 30 days on Growth, so a rollback depends on the plan" ], "agentNotes": [ "Pick the base URL by the space's region (mapi.storyblok.com for the EU, api-us, api-ca or api-ap otherwise). A token sent to the wrong region fails", "Create stories without `publish` to keep them as drafts, then call the publish endpoint. It is a GET, so never prefetch or blindly retry it", "Write translations as `field__i18n__\u003ccode\u003e` keys inside the same content object, and set the component field to translatable first", "Upload an asset in three steps (signed response, POST to S3, finish upload). Through MCP the S3 step needs shell access for curl", "Stay under 3 calls a second on Starter and 6 on paid plans, and back off exponentially on 429. Saves that break a field's max_length return 422" ], "metrics": { "kind": "remote", "measured": false }, "reviewCount": 0, "avgRating": 0, "history": [ { "basis": "public evidence", "confidence": "medium", "grade": "B", "methodology": "0.4", "pending": [ "performance", "tasks" ], "run": "2026-10-01", "runLabel": "October 2026 research run", "score": 67.7 } ], "editorialScores": { "ergonomics": 78, "maintenance": 80, "payments": 35, "reliability": 79, "schema": 68, "security": 73, "transparency": 73 }, "provenanceScore": 87 }, "connect": { "install": "npm install @storyblok/management-api-client", "http": "curl \"https://mapi.storyblok.com/v1/spaces/$SPACE_ID/stories/\" \\\n -H \"Authorization: $STORYBLOK_PERSONAL_ACCESS_TOKEN\"", "claudeCode": "claude mcp add --transport http Storyblok https://mcp.storyblok.com/mcp", "config": { "mcpServers": { "Storyblok": { "type": "http", "url": "https://mcp.storyblok.com/mcp" } } } }, "letme": { "capability": "https://letme.dev/cms.content", "tool": "https://letme.dev/storyblok" }, "area": "business", "unitPrices": [ { "item": "Growth", "unit": "month", "usd": 99, "note": "billed monthly, $90.75 billed yearly, 5 seats and 1M API requests included" }, { "item": "Growth Plus", "unit": "month", "usd": 349, "note": "billed monthly, $319.91 billed yearly, 15 seats and 4M API requests included" }, { "item": "Additional seat", "unit": "seat-month", "usd": 15, "note": "Starter (up to 2 seats) and Growth (up to 10)" }, { "item": "Additional API requests on Growth", "unit": "1k-requests", "usd": 0.01, "note": "sold as $10 per 1M, up to 5M a month" } ], "provenance": { "legalEntity": "Storyblok GmbH", "domain": "storyblok.com", "domainRegistered": "2015-08-15", "endpointOnVendorDomain": true, "terms": "https://www.storyblok.com/legal/terms", "privacy": "https://www.storyblok.com/legal/privacy-policy", "statusPage": "https://uptime.storyblok.com", "changelog": "https://www.storyblok.com/changelog", "securityTxt": "none", "checked": "2026-10-07", "notes": [ "The legal notice names Storyblok GmbH, Peter-Behrens-Platz 2, 4020 Linz, Austria, company register number FN 479743 f, Regional Court Linz.", "The Management API answers on storyblok.com subdomains and the MCP server at mcp.storyblok.com. Spaces in China use app.storyblokchina.cn.", "security.txt returns 404 on www.storyblok.com, storyblok.com and mapi.storyblok.com. The privacy policy gives security@storyblok.com for security matters.", "The terms page was last updated on 2 October 2026 and links separate self-service and enterprise terms. The self-service terms are governed by Austrian law.", "RDAP for storyblok.com gives a registration date of 2015-08-15.", "The status page runs on UptimeRobot with four monitors (Content Delivery API v1 and v2, GraphQL API, Image Service)." ], "score": 87 }, "pageJsonUrl": "https://www.anchorterminal.com/tools/storyblok.json", "live": { "slug": "storyblok", "probe": { "target": "https://mapi.storyblok.com/v1", "method": "get", "lastAt": "2026-10-10T02:55:11.792284684Z", "lastOk": true, "lastStatus": 404, "lastMs": 51, "authRequired": false, "uptime24h": 100, "uptime30d": 100, "p50ms24h": 60, "p95ms24h": 118, "samples24h": 249, "samples30d": 373, "days": [ { "date": "2026-10-08", "probes": 93, "ok": 93 }, { "date": "2026-10-09", "probes": 250, "ok": 250 }, { "date": "2026-10-10", "probes": 30, "ok": 30 } ] }, "vendorStatus": { "page": "https://uptime.storyblok.com", "indicator": "unknown", "summary": "no machine-readable status found", "checkedAt": "2026-10-10T00:51:17.862130209Z" }, "versions": [ { "registry": "github", "name": "storyblok/monoblok", "version": "storyblok@4.23.5", "released": "2026-10-09", "seenAt": "2026-10-09T17:22:09.921906019Z" }, { "registry": "npm", "name": "@storyblok/management-api-client", "version": "0.9.1", "seenAt": "2026-10-09T17:22:05.638275087Z" }, { "registry": "npm", "name": "storyblok", "version": "4.23.5", "seenAt": "2026-10-09T17:22:07.835430336Z" }, { "registry": "npm", "name": "storyblok-js-client", "version": "7.7.7", "seenAt": "2026-10-09T17:22:06.49261571Z" } ], "githubStars": 68, "npmWeekly": 75929, "securityTxt": { "url": "https://storyblok.com/.well-known/security.txt", "state": "none", "checkedAt": "2026-10-09T15:39:18.035863629Z" }, "llmsTxt": { "url": "https://www.storyblok.com/llms.txt", "ok": true, "status": 200, "checkedAt": "2026-10-09T14:02:50.898567796Z" }, "pages": [ { "url": "https://www.storyblok.com/changelog", "kind": "changelog", "status": 200, "checkedAt": "2026-10-09T18:54:35.512308247Z", "changedAt": "2026-10-09T18:54:35.512308247Z", "fingerprint": "6b87254caf9a" }, { "url": "https://www.storyblok.com/pricing", "kind": "pricing", "status": 200, "checkedAt": "2026-10-09T18:54:41.81705556Z", "changedAt": "2026-10-09T18:54:41.81705556Z", "fingerprint": "17b7a15e4aeb" }, { "url": "https://www.storyblok.com/legal/privacy-policy", "kind": "privacy", "status": 200, "checkedAt": "2026-10-09T18:54:37.836106144Z", "changedAt": "2026-10-09T18:54:37.836106144Z", "fingerprint": "6e17297fb89d" }, { "url": "https://www.storyblok.com/legal/terms", "kind": "terms", "status": 200, "checkedAt": "2026-10-09T18:54:40.448221349Z", "changedAt": "2026-10-09T18:54:40.448221349Z", "fingerprint": "5bfa638482aa" } ], "updatedAt": "2026-10-10T02:55:11.792284684Z" } }, "facts": [ { "a": "HTTP API", "b": "HTTP API", "name": "Kind" }, { "a": "ButterCMS LLC", "b": "Storyblok GmbH", "name": "Vendor" }, { "a": "https://api.buttercms.com/v2", "b": "https://mapi.storyblok.com/v1", "name": "Hosted endpoint" }, { "a": "HTTP", "b": "HTTP, Streamable HTTP", "name": "Transports" }, { "a": "API key", "b": "OAuth or key", "name": "Auth" }, { "a": "Freemium", "b": "Freemium", "name": "Pricing" }, { "a": "no", "b": "no", "name": "x402" }, { "a": "Proprietary service under ButterCMS's terms of service. The SDKs and starter projects on GitHub are MIT", "b": "Proprietary service under Storyblok's terms. The SDKs, API clients and CLI in storyblok/monoblok are MIT", "name": "Licence" }, { "a": "none", "b": "7", "name": "Tools exposed" }, { "a": "no", "b": "no", "name": "Read-only variant documented" }, { "a": "yes", "b": "yes", "name": "llms.txt" }, { "a": "2025-09-04", "b": "2026-10-02", "name": "Last release" }, { "a": "no date given", "b": "couldn't be read", "name": "Terms last updated" }, { "a": "2022-08-15", "b": "2025-10-06", "name": "Privacy policy last updated" }, { "a": "not found in the text", "b": "couldn't be read", "name": "Customer content may train models" }, { "a": "not found in the text", "b": "couldn't be read", "name": "Terms restrict automated access" }, { "a": "not found in the text", "b": "couldn't be read", "name": "Terms restrict benchmarking" }, { "a": "not found in the text", "b": "couldn't be read", "name": "Terms or service can change without notice" }, { "a": "not found in the text", "b": "couldn't be read", "name": "Arbitration or class-action waiver" }, { "a": "6.9k npm/wk", "b": "68 stars, 433k npm/wk", "name": "Popularity" } ], "faq": [ { "answer": "Storyblok scores 67.7 (B) on agent readiness against ButterCMS's 53.3 (D), and leads in 5 of 7 scored categories. ButterCMS leads on schema \u0026 documentation.", "question": "Which is better for AI agents, ButterCMS or Storyblok?" }, { "answer": "ButterCMS needs an API key. Storyblok takes an API key or an OAuth sign-in.", "question": "Do ButterCMS and Storyblok need an API key?" }, { "answer": "Yes. ButterCMS has a hosted endpoint at https://api.buttercms.com/v2 and Storyblok at https://mapi.storyblok.com/v1.", "question": "Can an agent call ButterCMS and Storyblok without installing anything?" } ], "goodFor": [ { "aheadOn": [ "Schema \u0026 documentation, 78 against 68" ], "also": null, "goodFor": "A team already on a paid ButterCMS plan that wants an agent to draft and publish pages, collection items and blog posts in small volumes.", "slug": "buttercms", "watchFor": "The Write API is a paid add-on on Advanced ($249 a month) and Professional ($399), capped at 2,000 and 5,000 write calls a month. Its price is not published" }, { "aheadOn": [ "Agent ergonomics, 78 against 64", "Security \u0026 auth, 73 against 36", "Payments \u0026 pricing, 35 against 20", "Maintenance \u0026 community, 80 against 27", "Transparency \u0026 trust, 80 against 51" ], "also": null, "goodFor": "Teams already on Storyblok who want an agent to draft, translate and publish stories or change component schemas under scoped, per-space permissions.", "slug": "storyblok", "watchFor": "The Management API's OpenAPI spec sits in a private repository. Only the Content Delivery API has a public spec (OpenAPI 3.1, 14 operations)" } ], "job": { "capability": "cms.content", "name": "Content management" }, "others": [ { "json": "https://www.anchorterminal.com/compare/buttercms-vs-contentstack.json", "title": "ButterCMS vs Contentstack", "url": "https://www.anchorterminal.com/compare/buttercms-vs-contentstack" }, { "json": "https://www.anchorterminal.com/compare/buttercms-vs-datocms.json", "title": "ButterCMS vs DatoCMS", "url": "https://www.anchorterminal.com/compare/buttercms-vs-datocms" }, { "json": "https://www.anchorterminal.com/compare/buttercms-vs-directus.json", "title": "ButterCMS vs Directus", "url": "https://www.anchorterminal.com/compare/buttercms-vs-directus" }, { "json": "https://www.anchorterminal.com/compare/buttercms-vs-ghost.json", "title": "ButterCMS vs Ghost", "url": "https://www.anchorterminal.com/compare/buttercms-vs-ghost" }, { "json": "https://www.anchorterminal.com/compare/buttercms-vs-hygraph.json", "title": "ButterCMS vs Hygraph", "url": "https://www.anchorterminal.com/compare/buttercms-vs-hygraph" }, { "json": "https://www.anchorterminal.com/compare/buttercms-vs-kontent-ai.json", "title": "ButterCMS vs Kontent.ai", "url": "https://www.anchorterminal.com/compare/buttercms-vs-kontent-ai" }, { "json": "https://www.anchorterminal.com/compare/buttercms-vs-payload.json", "title": "ButterCMS vs Payload", "url": "https://www.anchorterminal.com/compare/buttercms-vs-payload" }, { "json": "https://www.anchorterminal.com/compare/buttercms-vs-prismic.json", "title": "ButterCMS vs Prismic", "url": "https://www.anchorterminal.com/compare/buttercms-vs-prismic" }, { "json": "https://www.anchorterminal.com/compare/buttercms-vs-sanity.json", "title": "ButterCMS vs Sanity", "url": "https://www.anchorterminal.com/compare/buttercms-vs-sanity" }, { "json": "https://www.anchorterminal.com/compare/buttercms-vs-strapi.json", "title": "ButterCMS vs Strapi", "url": "https://www.anchorterminal.com/compare/buttercms-vs-strapi" }, { "json": "https://www.anchorterminal.com/compare/buttercms-vs-webflow.json", "title": "ButterCMS vs Webflow", "url": "https://www.anchorterminal.com/compare/buttercms-vs-webflow" }, { "json": "https://www.anchorterminal.com/compare/buttercms-vs-wordpress.json", "title": "ButterCMS vs WordPress", "url": "https://www.anchorterminal.com/compare/buttercms-vs-wordpress" }, { "json": "https://www.anchorterminal.com/compare/contentstack-vs-storyblok.json", "title": "Contentstack vs Storyblok", "url": "https://www.anchorterminal.com/compare/contentstack-vs-storyblok" }, { "json": "https://www.anchorterminal.com/compare/datocms-vs-storyblok.json", "title": "DatoCMS vs Storyblok", "url": "https://www.anchorterminal.com/compare/datocms-vs-storyblok" }, { "json": "https://www.anchorterminal.com/compare/directus-vs-storyblok.json", "title": "Directus vs Storyblok", "url": "https://www.anchorterminal.com/compare/directus-vs-storyblok" }, { "json": "https://www.anchorterminal.com/compare/ghost-vs-storyblok.json", "title": "Ghost vs Storyblok", "url": "https://www.anchorterminal.com/compare/ghost-vs-storyblok" }, { "json": "https://www.anchorterminal.com/compare/hygraph-vs-storyblok.json", "title": "Hygraph vs Storyblok", "url": "https://www.anchorterminal.com/compare/hygraph-vs-storyblok" }, { "json": "https://www.anchorterminal.com/compare/kontent-ai-vs-storyblok.json", "title": "Kontent.ai vs Storyblok", "url": "https://www.anchorterminal.com/compare/kontent-ai-vs-storyblok" }, { "json": "https://www.anchorterminal.com/compare/payload-vs-storyblok.json", "title": "Payload vs Storyblok", "url": "https://www.anchorterminal.com/compare/payload-vs-storyblok" }, { "json": "https://www.anchorterminal.com/compare/prismic-vs-storyblok.json", "title": "Prismic vs Storyblok", "url": "https://www.anchorterminal.com/compare/prismic-vs-storyblok" }, { "json": "https://www.anchorterminal.com/compare/sanity-vs-storyblok.json", "title": "Sanity vs Storyblok", "url": "https://www.anchorterminal.com/compare/sanity-vs-storyblok" }, { "json": "https://www.anchorterminal.com/compare/storyblok-vs-strapi.json", "title": "Storyblok vs Strapi", "url": "https://www.anchorterminal.com/compare/storyblok-vs-strapi" }, { "json": "https://www.anchorterminal.com/compare/storyblok-vs-webflow.json", "title": "Storyblok vs Webflow", "url": "https://www.anchorterminal.com/compare/storyblok-vs-webflow" }, { "json": "https://www.anchorterminal.com/compare/storyblok-vs-wordpress.json", "title": "Storyblok vs WordPress", "url": "https://www.anchorterminal.com/compare/storyblok-vs-wordpress" } ], "scores": [ { "buttercms": 83, "by": 4, "edge": "buttercms", "key": "reliability", "name": "Reliability", "storyblok": 79, "weight": 16 }, { "key": "performance", "name": "Performance", "pending": true, "weight": 10 }, { "buttercms": 78, "by": 10, "edge": "buttercms", "key": "schema", "name": "Schema \u0026 documentation", "storyblok": 68, "weight": 13 }, { "buttercms": 64, "by": 14, "edge": "storyblok", "key": "ergonomics", "name": "Agent ergonomics", "storyblok": 78, "weight": 13 }, { "buttercms": 36, "by": 37, "edge": "storyblok", "key": "security", "name": "Security \u0026 auth", "storyblok": 73, "weight": 14 }, { "buttercms": 20, "by": 15, "edge": "storyblok", "key": "payments", "name": "Payments \u0026 pricing", "storyblok": 35, "weight": 10 }, { "key": "tasks", "name": "Task success", "pending": true, "weight": 10 }, { "buttercms": 27, "by": 53, "edge": "storyblok", "key": "maintenance", "name": "Maintenance \u0026 community", "storyblok": 80, "weight": 7 }, { "buttercms": 51, "by": 29, "edge": "storyblok", "key": "transparency", "name": "Transparency \u0026 trust", "storyblok": 80, "weight": 7 } ], "summary": "Storyblok scores 67.7 (B) on agent readiness against ButterCMS's 53.3 (D), and leads in 5 of 7 scored categories. ButterCMS leads on schema \u0026 documentation. Both do content management.", "verdicts": { "buttercms": "The Read and Write APIs have a public OpenAPI 3.1 file, Markdown docs and a status page with no incident since October 2025. The Write API is a paid add-on from the $249 plan, capped at 2,000 or 5,000 calls a month. Writes answer 202 with no identifier, support rotates tokens, and the terms are an undated website document.", "storyblok": "The hosted MCP server covers the whole Management API with seven tools, OAuth scopes split into read, write and publish per space, and a confirmation step on deletes. The Management API has no public OpenAPI spec, no idempotency keys and no monitor on the public status page, and publishing is a GET request." } }, "kind": "anchor.page", "links": { "api": "https://www.anchorterminal.com/api/v1/index.json", "html": "https://www.anchorterminal.com/compare/buttercms-vs-storyblok", "json": "https://www.anchorterminal.com/compare/buttercms-vs-storyblok.json", "llms": "https://www.anchorterminal.com/llms.txt", "markdown": "https://www.anchorterminal.com/compare/buttercms-vs-storyblok.md", "slim": "https://www.anchorterminal.com/compare/buttercms-vs-storyblok.min.md" }, "markdown": "Storyblok scores 67.7 (B) on agent readiness against ButterCMS's 53.3 (D), and leads in 5 of 7 scored categories. ButterCMS leads on schema \u0026 documentation. Both do content management.\n\n- ButterCMS: grade D, 53.3/100, rank #711 of 950. Markdown https://www.anchorterminal.com/tools/buttercms.md · JSON https://www.anchorterminal.com/api/v1/tools/buttercms.json\n- Storyblok: grade B, 67.7/100, rank #244 of 950. Markdown https://www.anchorterminal.com/tools/storyblok.md · JSON https://www.anchorterminal.com/api/v1/tools/storyblok.json\n- Best headless CMS and website publishing for AI agents: https://www.anchorterminal.com/best/cms/index.md\n- All 91 cms comparisons: https://www.anchorterminal.com/compare/cms/index.md\n\n## Which one, for what\n\n### ButterCMS (D)\n\nGood for: A team already on a paid ButterCMS plan that wants an agent to draft and publish pages, collection items and blog posts in small volumes.\n\nAhead on:\n- Schema \u0026 documentation, 78 against 68\n\nWatch for: The Write API is a paid add-on on Advanced ($249 a month) and Professional ($399), capped at 2,000 and 5,000 write calls a month. Its price is not published\n\n### Storyblok (B)\n\nGood for: Teams already on Storyblok who want an agent to draft, translate and publish stories or change component schemas under scoped, per-space permissions.\n\nAhead on:\n- Agent ergonomics, 78 against 64\n- Security \u0026 auth, 73 against 36\n- Payments \u0026 pricing, 35 against 20\n- Maintenance \u0026 community, 80 against 27\n- Transparency \u0026 trust, 80 against 51\n\nWatch for: The Management API's OpenAPI spec sits in a private repository. Only the Content Delivery API has a public spec (OpenAPI 3.1, 14 operations)\n\n\n## Score by category\n\n| Category | Weight | ButterCMS | Storyblok | Edge |\n| --- | --- | --- | --- | --- |\n| Reliability | 16% (20 this run) | 83 | 79 | ButterCMS +4 |\n| Performance | 10%, pending | pending | pending | not scored in this run |\n| Schema \u0026 documentation | 13% (16.2 this run) | 78 | 68 | ButterCMS +10 |\n| Agent ergonomics | 13% (16.2 this run) | 64 | 78 | Storyblok +14 |\n| Security \u0026 auth | 14% (17.5 this run) | 36 | 73 | Storyblok +37 |\n| Payments \u0026 pricing | 10% (12.5 this run) | 20 | 35 | Storyblok +15 |\n| Task success | 10%, pending | pending | pending | not scored in this run |\n| Maintenance \u0026 community | 7% (8.8 this run) | 27 | 80 | Storyblok +53 |\n| Transparency \u0026 trust | 7% (8.8 this run) | 51 | 80 | Storyblok +29 |\n| Negative events | ≤15 | -2 | -3 | |\n| **Total** | | **53.3 · D** | **67.7 · B** | |\n\n## Facts side by side\n\n| Fact | ButterCMS | Storyblok |\n| --- | --- | --- |\n| Kind | HTTP API | HTTP API |\n| Vendor | ButterCMS LLC | Storyblok GmbH |\n| Hosted endpoint | `https://api.buttercms.com/v2` | `https://mapi.storyblok.com/v1` |\n| Transports | HTTP | HTTP, Streamable HTTP |\n| Auth | API key | OAuth or key |\n| Pricing | Freemium | Freemium |\n| x402 | no | no |\n| Licence | Proprietary service under ButterCMS's terms of service. The SDKs and starter projects on GitHub are MIT | Proprietary service under Storyblok's terms. The SDKs, API clients and CLI in storyblok/monoblok are MIT |\n| Tools exposed | none | 7 |\n| Read-only variant documented | no | no |\n| llms.txt | yes | yes |\n| Last release | 2025-09-04 | 2026-10-02 |\n| Terms last updated | no date given | couldn't be read |\n| Privacy policy last updated | 2022-08-15 | 2025-10-06 |\n| Customer content may train models | not found in the text | couldn't be read |\n| Terms restrict automated access | not found in the text | couldn't be read |\n| Terms restrict benchmarking | not found in the text | couldn't be read |\n| Terms or service can change without notice | not found in the text | couldn't be read |\n| Arbitration or class-action waiver | not found in the text | couldn't be read |\n| Popularity | 6.9k npm/wk | 68 stars, 433k npm/wk |\n\n## Verdicts\n\n**ButterCMS.** The Read and Write APIs have a public OpenAPI 3.1 file, Markdown docs and a status page with no incident since October 2025. The Write API is a paid add-on from the $249 plan, capped at 2,000 or 5,000 calls a month. Writes answer 202 with no identifier, support rotates tokens, and the terms are an undated website document.\n\n**Storyblok.** The hosted MCP server covers the whole Management API with seven tools, OAuth scopes split into read, write and publish per space, and a confirmation step on deletes. The Management API has no public OpenAPI spec, no idempotency keys and no monitor on the public status page, and publishing is a GET request.\n\n## Before you call either\n\n### ButterCMS\n\n1. End every path with a slash. A missing slash returns a 301, and the vendor counts the redirect and the retry as two API calls\n2. Send the write token only as `Authorization: Token \u003ctoken\u003e`. The `auth_token` query parameter works for reads only\n3. On page creation send every field key of the page type, with empty strings for fields left blank\n4. A 202 means queued, not saved. Read the entry back with `preview=1` to confirm, and check a slug exists before retrying a create\n5. Call the REST API directly for writes. The JavaScript SDK 3.0.3 has list, retrieve and search methods only\n\n### Storyblok\n\n1. Pick the base URL by the space's region (mapi.storyblok.com for the EU, api-us, api-ca or api-ap otherwise). A token sent to the wrong region fails\n2. Create stories without `publish` to keep them as drafts, then call the publish endpoint. It is a GET, so never prefetch or blindly retry it\n3. Write translations as `field__i18n__\u003ccode\u003e` keys inside the same content object, and set the component field to translatable first\n4. Upload an asset in three steps (signed response, POST to S3, finish upload). Through MCP the S3 step needs shell access for curl\n5. Stay under 3 calls a second on Starter and 6 on paid plans, and back off exponentially on 429. Saves that break a field's max_length return 422\n\n## Questions\n\n### Which is better for AI agents, ButterCMS or Storyblok?\n\nStoryblok scores 67.7 (B) on agent readiness against ButterCMS's 53.3 (D), and leads in 5 of 7 scored categories. ButterCMS leads on schema \u0026 documentation.\n\n### Do ButterCMS and Storyblok need an API key?\n\nButterCMS needs an API key. Storyblok takes an API key or an OAuth sign-in.\n\n### Can an agent call ButterCMS and Storyblok without installing anything?\n\nYes. ButterCMS has a hosted endpoint at https://api.buttercms.com/v2 and Storyblok at https://mapi.storyblok.com/v1.\n\n\n## For agents\n\n- This comparison as JSON: https://www.anchorterminal.com/compare/buttercms-vs-storyblok.json, and with the fewest tokens: https://www.anchorterminal.com/compare/buttercms-vs-storyblok.min.md\n- Over MCP at https://www.anchorterminal.com/mcp (no key): `compare_tools {\"a\": \"buttercms\", \"b\": \"storyblok\"}`. From a terminal: `anchor compare buttercms storyblok`\n- Each listing in full: https://www.anchorterminal.com/api/v1/tools/buttercms.json and https://www.anchorterminal.com/api/v1/tools/storyblok.json\n\n## Other comparisons with ButterCMS or Storyblok\n\n- [ButterCMS vs Contentstack](https://www.anchorterminal.com/compare/buttercms-vs-contentstack.md)\n- [ButterCMS vs DatoCMS](https://www.anchorterminal.com/compare/buttercms-vs-datocms.md)\n- [ButterCMS vs Directus](https://www.anchorterminal.com/compare/buttercms-vs-directus.md)\n- [ButterCMS vs Ghost](https://www.anchorterminal.com/compare/buttercms-vs-ghost.md)\n- [ButterCMS vs Hygraph](https://www.anchorterminal.com/compare/buttercms-vs-hygraph.md)\n- [ButterCMS vs Kontent.ai](https://www.anchorterminal.com/compare/buttercms-vs-kontent-ai.md)\n- [ButterCMS vs Payload](https://www.anchorterminal.com/compare/buttercms-vs-payload.md)\n- [ButterCMS vs Prismic](https://www.anchorterminal.com/compare/buttercms-vs-prismic.md)\n- [ButterCMS vs Sanity](https://www.anchorterminal.com/compare/buttercms-vs-sanity.md)\n- [ButterCMS vs Strapi](https://www.anchorterminal.com/compare/buttercms-vs-strapi.md)\n- [ButterCMS vs Webflow](https://www.anchorterminal.com/compare/buttercms-vs-webflow.md)\n- [ButterCMS vs WordPress](https://www.anchorterminal.com/compare/buttercms-vs-wordpress.md)\n- [Contentstack vs Storyblok](https://www.anchorterminal.com/compare/contentstack-vs-storyblok.md)\n- [DatoCMS vs Storyblok](https://www.anchorterminal.com/compare/datocms-vs-storyblok.md)\n- [Directus vs Storyblok](https://www.anchorterminal.com/compare/directus-vs-storyblok.md)\n- [Ghost vs Storyblok](https://www.anchorterminal.com/compare/ghost-vs-storyblok.md)\n- [Hygraph vs Storyblok](https://www.anchorterminal.com/compare/hygraph-vs-storyblok.md)\n- [Kontent.ai vs Storyblok](https://www.anchorterminal.com/compare/kontent-ai-vs-storyblok.md)\n- [Payload vs Storyblok](https://www.anchorterminal.com/compare/payload-vs-storyblok.md)\n- [Prismic vs Storyblok](https://www.anchorterminal.com/compare/prismic-vs-storyblok.md)\n- [Sanity vs Storyblok](https://www.anchorterminal.com/compare/sanity-vs-storyblok.md)\n- [Storyblok vs Strapi](https://www.anchorterminal.com/compare/storyblok-vs-strapi.md)\n- [Storyblok vs Webflow](https://www.anchorterminal.com/compare/storyblok-vs-webflow.md)\n- [Storyblok vs WordPress](https://www.anchorterminal.com/compare/storyblok-vs-wordpress.md)\n", "meta": { "attribution": "Anchor Terminal (https://www.anchorterminal.com)", "docs": "https://www.anchorterminal.com/docs/", "generatedAt": "2026-10-10", "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": "ButterCMS vs Storyblok", "url": "" } ], "description": "Storyblok scores 67.7 (B) to ButterCMS's 53.3 (D) for content management. Prices, MCP, x402, uptime and agent notes side by side.", "facts": [ "ButterCMS D 53.3", "Storyblok B 67.7", "scores" ], "h1": "ButterCMS vs Storyblok", "image": "https://www.anchorterminal.com/assets/og/compare-buttercms-vs-storyblok.png", "path": "/compare/buttercms-vs-storyblok", "published": "2026-10-01", "section": "tools", "title": "ButterCMS vs Storyblok for AI agents in 2026: scores and prices", "toc": null, "updated": "2026-10-09", "url": "https://www.anchorterminal.com/compare/buttercms-vs-storyblok" }, "tokens": { "markdown": 2450, "slim": 730 }, "version": 1 }