{ "data": { "a": { "slug": "contentstack", "name": "Contentstack", "vendor": "Contentstack Inc.", "vendorUrl": "https://www.contentstack.com", "kind": "http-api", "category": "cms", "summary": "Contentstack is a hosted headless CMS. Its Content Management API reads and writes entries, assets, content types, locales, releases and publishing across seven regional endpoints, and an official local MCP server wraps the same API for agents.", "url": "https://www.anchorterminal.com/tools/contentstack", "markdownUrl": "https://www.anchorterminal.com/tools/contentstack.md", "slimMarkdownUrl": "https://www.anchorterminal.com/tools/contentstack.min.md", "jsonUrl": "https://www.anchorterminal.com/api/v1/tools/contentstack.json", "dns": "contentstack.grade.anchorterminal.com", "repo": "https://github.com/contentstack/contentstack-openapi", "license": "Proprietary service under Contentstack's Master Agreement and Terms of Service. The OpenAPI files, the management SDKs, the CLI and the @contentstack/mcp package are MIT", "transports": [ "http", "stdio" ], "remoteUrl": "https://api.contentstack.io", "packages": [ { "registry": "npm", "name": "@contentstack/mcp" }, { "registry": "npm", "name": "@contentstack/management" }, { "registry": "pypi", "name": "contentstack-management" } ], "auth": "mixed", "authNotes": "Access is self-serve. Sign up, create a stack, then create a management token in the stack's settings (stack Owner or Admin only) and send it in the `authorization` header with the stack's `api_key`. Management tokens can be read-only or read-write, limited to branches, and given an expiry date. OAuth 2.0 apps are created in Developer Hub, with authorisation code and client credentials grants, scopes per module and action, 60-minute tokens and a refresh grant. A user authtoken from the login endpoint also works. The MCP server uses OAuth through `npx @contentstack/mcp --auth`, or a management token for content tools.", "pricing": "freemium", "pricingNotes": "Free plan at $0 a month with no card and no expiry (one stack, three users, 100,000 API calls a month, 1,000 entries), so an agent's owner can start without a contract. Build is $29 a month and Growth $299 a month with extra users at $25 each. Enterprise is priced by quote. Build mentions pay-as-you-go overages, and no overage rate is shown on the pricing page (https://www.contentstack.com/pricing, checked 2026-10-07).", "priceSummary": "$29 / mo", "where": "both", "x402": { "level": "no", "evidence": "No x402, MPP or L402 in the API docs, the OpenAPI file, the MCP package or the pricing page (checked 2026-10-07).", "endpoints": [] }, "toolCount": 206, "popularity": { "githubStars": null, "npmWeekly": 43992, "pypiWeekly": 1504, "asOf": "2026-10-07" }, "docsUrl": "https://www.contentstack.com/docs/developers/apis/content-management-api", "llmsTxt": "https://www.contentstack.com/llms.txt", "openapi": "https://github.com/contentstack/contentstack-openapi", "capabilities": [ "cms.content", "cms.publish", "cms.assets", "cms.localisation", "cms.schema" ], "tags": [ "hosted", "official", "mcp", "openapi", "llms-txt", "oauth", "free-tier", "no-card", "closed-source", "webhooks", "typescript", "python", "java", "dotnet", "status-page", "soc2", "sla" ], "lastRelease": "2026-10-21", "graded": true, "anchor": { "graded": true, "score": 66.4, "grade": "B", "agentReady": false, "rank": 369, "ranked": true, "rankOf": 1486, "categoryRank": 8, "methodology": "0.7", "run": "2026-10-01", "scores": { "ergonomics": 67, "maintenance": 82, "payments": 30, "reliability": 81, "schema": 79, "security": 69, "transparency": 74 }, "pending": [ "performance", "tasks" ], "assessment": { "confidence": "medium", "date": "2026-11-02" }, "negative": -3, "negativeNotes": [ "11 September 2026. The `limit` query parameter on delivery and management requests changed behaviour inside v3. `limit=0` used to return every matching record and now returns the default 100, so an integration relying on it gets a truncated result with a 200 status. The changelog entry is dated the same day and gives a migration path, and no earlier notice was found in the changelog feed. Deducted 3, the low end, because it was documented (https://www.contentstack.com/docs/changelog)." ], "verdict": "The Content Management API has a public OpenAPI file, OAuth scopes that separate read, write and publish, read-only management tokens and a stack audit log. A free plan needs no card. The MCP server loads 78 tools by default with no annotations or read-only switch, and the `limit=0` behaviour changed on 11 September 2026 without advance notice.", "bestFor": "Teams already on Contentstack, or starting on its free plan, who want an agent to draft, localise, release and publish structured content with scoped credentials and an audit trail.", "strengths": [ "OAuth 2.0 scopes separate read, write, publish and unpublish for entries and assets, with 60-minute tokens and a refresh grant", "Management tokens can be read-only, limited to named branches, given an expiry date and given their own per-second rate limits", "Free plan at $0 with no card and no expiry (one stack, three users, 100,000 API calls a month), launched 16 September 2026", "Public OpenAPI 3.0.0 file for the Content Management API (138 paths, 221 operations) and public JSON Schema for all 206 MCP tools at mcp.contentstack.com", "Stack audit log readable through /v3/audit-logs, and entry and asset version history through the API", "Uptime commitment of 99.50 or 99.95 per cent by plan, with service credits, published in the Services Description" ], "weaknesses": [ "The MCP server's default group loads 78 tools, including nine deletes, with no readOnlyHint or destructiveHint annotations and no read-only switch", "On 11 September 2026 `limit=0` stopped returning every record and now returns the default 100. The changelog entry is dated the same day", "The OpenAPI file documents only 200 responses and has no enums or component schemas. Request bodies are shown as examples", "No idempotency keys and no Retry-After header were found. The docs name only X-RateLimit-Limit and X-RateLimit-Remaining", "No security.txt and no bug bounty were found, and no deprecation policy with a notice period", "Five incidents touching the product on status.contentstack.com between 28 August and 10 October 2026, each confined to one region" ], "agentNotes": [ "Pick the base URL for the stack's region first. North America on AWS is https://api.contentstack.io, and the other six regions use contentstack.com hosts", "Send `api_key` and `authorization` headers on every Content Management API call. Ask for a read-only management token when the task only reads", "Page with `limit` (100 at most), `skip` and `include_count=true`. `limit=0` no longer returns everything", "Stay under 10 reads and 10 writes a second per organisation, and one bulk request a second. Watch `X-RateLimit-Remaining` and back off on 429, since management API 429s carry no Retry-After", "Start the MCP server with `--groups cma` only, and add `cma-extended` when the task needs audit logs or version history. Publishing and deleting need no confirmation" ], "metrics": { "kind": "remote", "measured": false }, "reviewCount": 4, "avgRating": 2.8, "history": [ { "basis": "public evidence", "confidence": "medium", "grade": "B", "methodology": "0.7", "pending": [ "performance", "tasks" ], "run": "2026-10-01", "runLabel": "October 2026 research run", "score": 66.4 } ], "editorialScores": { "ergonomics": 67, "maintenance": 82, "payments": 30, "reliability": 81, "schema": 79, "security": 69, "transparency": 59 }, "provenanceScore": 89, "checked": { "categories": { "ergonomics": "2026-11-02", "maintenance": "2026-11-02", "payments": "2026-11-02", "reliability": "2026-11-02", "schema": "2026-11-02", "security": "2026-11-02", "transparency": "2026-11-02" }, "last": "2026-11-02", "lastMoved": "2026-11-02", "oldest": "2026-11-02", "stale": false, "staleAfterDays": 90 } }, "connect": { "install": "npx -y @contentstack/mcp", "http": "curl \"https://api.contentstack.io/v3/content_types\" \\\n -H \"api_key: $CONTENTSTACK_API_KEY\" -H \"authorization: $CONTENTSTACK_MANAGEMENT_TOKEN\"", "config": { "mcpServers": { "contentstack": { "args": [ "-y", "@contentstack/mcp" ], "command": "npx", "env": { "CONTENTSTACK_API_KEY": "\u003cYOUR_STACK_API_KEY\u003e", "GROUPS": "cma" } } } } }, "letme": { "capability": "https://letme.dev/cms.content", "tool": "https://letme.dev/contentstack" }, "area": "business", "unitPrices": [ { "item": "Build", "unit": "month", "usd": 29, "note": "3 users, 250,000 API calls a month" }, { "item": "Growth", "unit": "month", "usd": 299, "note": "10 users, 1M API calls a month" }, { "item": "Growth, each extra user", "unit": "seat-month", "usd": 25, "note": "beyond the 10 included" } ], "provenance": { "legalEntity": "Contentstack Inc.", "domain": "contentstack.com", "domainRegistered": "2011-10-29", "domainNote": "The AWS North America API is on api.contentstack.io. The other six regions and the MCP tool definitions are on contentstack.com hosts.", "endpointOnVendorDomain": true, "terms": "https://www.contentstack.com/legal/terms-of-service", "privacy": "https://www.contentstack.com/legal/privacy", "statusPage": "https://status.contentstack.com", "changelog": "https://www.contentstack.com/docs/changelog", "securityTxt": "none", "checked": "2026-10-07", "notes": [ "The Master Agreement (last updated 17 July 2026) names Contentstack Inc., a Delaware corporation at 1023 Springdale Rd., Bldg. 14A, Austin, TX 78721. The privacy policy is dated 30 June 2026.", "The online Terms of Service carry an effective date of August 2022. Paid subscriptions are governed by the Master Agreement and the Services Description (last updated 28 July 2026).", "www.contentstack.com/.well-known/security.txt and /security.txt both return 404. SECURITY.md in Contentstack's GitHub repositories sends reports to security@contentstack.com.", "RDAP for contentstack.com gives a registration date of 2011-10-29.", "The npm package @contentstack/mcp names github.com/contentstack/mcp as its repository. That repository asked for credentials when we tried to clone it, so it isn't public." ], "score": 89 }, "pageJsonUrl": "https://www.anchorterminal.com/tools/contentstack.json", "live": { "slug": "contentstack", "probe": { "target": "https://api.contentstack.io", "method": "get", "lastAt": "2026-11-07T18:07:49.15829992Z", "lastOk": true, "lastStatus": 404, "lastMs": 622, "authRequired": false, "uptime24h": 100, "uptime30d": 100, "p50ms24h": 549, "p95ms24h": 660, "samples24h": 239, "samples30d": 7461, "days": [ { "date": "2026-10-08", "probes": 93, "ok": 93 }, { "date": "2026-10-09", "probes": 250, "ok": 250 }, { "date": "2026-10-10", "probes": 247, "ok": 247 }, { "date": "2026-10-11", "probes": 247, "ok": 247 }, { "date": "2026-10-12", "probes": 247, "ok": 247 }, { "date": "2026-10-13", "probes": 248, "ok": 248 }, { "date": "2026-10-14", "probes": 249, "ok": 249 }, { "date": "2026-10-15", "probes": 253, "ok": 253 }, { "date": "2026-10-16", "probes": 252, "ok": 252 }, { "date": "2026-10-17", "probes": 253, "ok": 253 }, { "date": "2026-10-18", "probes": 256, "ok": 256 }, { "date": "2026-10-19", "probes": 255, "ok": 255 }, { "date": "2026-10-20", "probes": 252, "ok": 252 }, { "date": "2026-10-21", "probes": 253, "ok": 253 }, { "date": "2026-10-22", "probes": 253, "ok": 253 }, { "date": "2026-10-23", "probes": 248, "ok": 248 }, { "date": "2026-10-24", "probes": 251, "ok": 251 }, { "date": "2026-10-25", "probes": 250, "ok": 250 }, { "date": "2026-10-26", "probes": 252, "ok": 252 }, { "date": "2026-10-27", "probes": 249, "ok": 249 }, { "date": "2026-10-28", "probes": 251, "ok": 251 }, { "date": "2026-10-29", "probes": 249, "ok": 249 }, { "date": "2026-10-30", "probes": 248, "ok": 248 }, { "date": "2026-10-31", "probes": 251, "ok": 251 }, { "date": "2026-11-01", "probes": 249, "ok": 249 }, { "date": "2026-11-02", "probes": 250, "ok": 250 }, { "date": "2026-11-03", "probes": 248, "ok": 248 }, { "date": "2026-11-04", "probes": 246, "ok": 246 }, { "date": "2026-11-05", "probes": 185, "ok": 185 }, { "date": "2026-11-06", "probes": 241, "ok": 241 }, { "date": "2026-11-07", "probes": 185, "ok": 185 } ] }, "vendorStatus": { "page": "https://status.contentstack.com", "indicator": "none", "summary": "All Systems Operational", "checkedAt": "2026-11-07T18:09:12.764342935Z" }, "versions": [ { "registry": "npm", "name": "@contentstack/management", "version": "1.31.3", "seenAt": "2026-11-06T23:17:20.279280506Z" }, { "registry": "npm", "name": "@contentstack/mcp", "version": "0.9.0", "seenAt": "2026-11-06T23:17:18.275980206Z" }, { "registry": "pypi", "name": "contentstack-management", "version": "1.11.3", "released": "2026-11-02", "seenAt": "2026-11-06T23:17:22.225019663Z" } ], "githubStars": 8, "npmWeekly": 780, "pypiWeekly": 1077, "securityTxt": { "url": "https://contentstack.com/.well-known/security.txt", "state": "none", "checkedAt": "2026-11-07T16:00:56.154325477Z" }, "llmsTxt": { "url": "https://www.contentstack.com/llms.txt", "ok": true, "status": 200, "checkedAt": "2026-11-07T15:32:11.816445692Z" }, "domain": { "domain": "contentstack.com", "registered": "2011-10-29", "source": "https://rdap.verisign.com/com/v1/domain/contentstack.com", "checkedAt": "2026-11-01T14:16:30.448418471Z" }, "pages": [ { "url": "https://www.contentstack.com/docs/changelog", "kind": "deprecations", "status": 200, "checkedAt": "2026-11-07T14:27:16.950732562Z", "changedAt": "2026-11-07T14:27:16.950732562Z", "fingerprint": "7919e0674348" }, { "url": "https://www.contentstack.com/pricing", "kind": "pricing", "status": 200, "checkedAt": "2026-11-07T14:27:24.121315376Z", "changedAt": "2026-11-07T14:27:24.121315376Z", "fingerprint": "ee75f8dc5977" }, { "url": "https://www.contentstack.com/legal/privacy", "kind": "privacy", "status": 200, "checkedAt": "2026-11-07T14:27:19.754432788Z", "changedAt": "2026-10-20T00:10:46.660290095Z", "fingerprint": "cc491abdfd29" }, { "url": "https://www.contentstack.com/legal/terms-of-service", "kind": "terms", "status": 200, "checkedAt": "2026-11-07T14:27:22.27803892Z", "changedAt": "2026-10-20T00:10:49.171571845Z", "fingerprint": "75dbf5c969d0" } ], "github": { "repo": "contentstack/contentstack-openapi", "checkedAt": "2026-11-02T08:41:32.413867522Z", "stars": 8, "archived": false, "issuesEnabled": true, "pushedAt": "2026-10-12T10:13:48Z", "openIssues": 1, "openPRs": 0, "issuesOpened90d": 0, "issuesClosed90d": 0, "prsMerged90d": 0, "replies": { "sampled": 2, "unanswered": 1, "medianDays": 135.9 } }, "updatedAt": "2026-11-07T18:09:12.764342935Z" } }, "answer": "Cosmic scores 72.5 (BB) on agent readiness against Contentstack's 66.4 (B), and leads in 5 of 7 scored categories. Contentstack leads on security \u0026 auth and transparency \u0026 trust.", "b": { "slug": "cosmic", "name": "Cosmic", "vendor": "Cosmic Inc.", "vendorUrl": "https://www.cosmicjs.com", "kind": "http-api", "category": "cms", "summary": "Cosmic is a hosted headless CMS with a REST API, a TypeScript SDK, a CLI and a hosted MCP server. Agents read and write objects, media and object types, generate media, and can create a project by agent signup.", "url": "https://www.anchorterminal.com/tools/cosmic", "markdownUrl": "https://www.anchorterminal.com/tools/cosmic.md", "slimMarkdownUrl": "https://www.anchorterminal.com/tools/cosmic.min.md", "jsonUrl": "https://www.anchorterminal.com/api/v1/tools/cosmic.json", "dns": "cosmic.grade.anchorterminal.com", "repo": "https://github.com/cosmicjs/mcp", "transports": [ "http", "streamable-http", "stdio" ], "remoteUrl": "https://mcp.cosmicjs.com/v1/buckets/{bucket_slug}", "packages": [ { "registry": "npm", "name": "@cosmicjs/mcp" }, { "registry": "npm", "name": "@cosmicjs/sdk" }, { "registry": "npm", "name": "@cosmicjs/cli" } ], "auth": "api-key", "authNotes": "Each bucket has a read key and a write key, rotatable independently. The hosted MCP server takes `Authorization: Bearer READ_KEY` for read-only tools or `READ_KEY:WRITE_KEY` for full access; the write key can also go in `X-Cosmic-Write-Key`. The REST API takes the read key as `read_key` in the query or as a Bearer token on GET. POST /v3/agents/sign-up on dapi.cosmicjs.com needs no authentication and returns bucket keys for a new unclaimed project tied to a human's email.", "pricing": "freemium", "pricingNotes": "Free plan at $0 with 1 bucket, 10,000 objects and 250,000 non-cached API requests a month, no card. Builder $99 a month, Team $299, Business $499, Small Workspace $999 and Large Workspace $2,999, with 10 per cent off yearly; Enterprise by quote. Webhooks, localisation and revision history are paid add-ons. Workspace plans have a 30-day trial.", "priceSummary": "$99 / mo", "where": "both", "x402": { "level": "no", "evidence": "No x402, MPP or L402 in llms.txt, the OpenAPI spec, the MCP docs or pricing.md (checked 2026-11-06). An unclaimed or over-limit bucket returns 402 with no payment requirements.", "endpoints": [] }, "toolCount": 24, "popularity": { "githubStars": null, "npmWeekly": 295, "pypiWeekly": null, "asOf": "2026-11-06" }, "docsUrl": "https://www.cosmicjs.com/docs", "llmsTxt": "https://www.cosmicjs.com/llms.txt", "openapi": "https://www.cosmicjs.com/openapi.json", "registryName": "com.cosmicjs/mcp", "capabilities": [ "cms.content", "cms.assets", "cms.schema", "cms.publish", "cms.localisation" ], "tags": [ "official", "hosted", "mcp", "remote-mcp", "mcp-registry", "openapi", "llms-txt", "free-tier", "no-card", "status-page", "webhooks", "typescript", "cli", "closed-source" ], "lastRelease": "2026-11-02", "graded": true, "anchor": { "graded": true, "score": 72.5, "grade": "BB", "agentReady": true, "rank": 123, "ranked": true, "rankOf": 1486, "categoryRank": 3, "methodology": "0.7", "run": "2026-10-01", "scores": { "ergonomics": 82, "maintenance": 86, "payments": 45, "reliability": 90, "schema": 88, "security": 47, "transparency": 63 }, "pending": [ "performance", "tasks" ], "assessment": { "confidence": "medium", "date": "2026-11-06" }, "negative": 0, "verdict": "Cosmic gives agents 24 annotated MCP tools with when-to-use descriptions, a read-only mode by key, documented limits and an agent signup API that returns working keys before a human claims the project. It holds no SOC 2 or ISO certification by its own statement, and read keys can travel in the URL.", "bestFor": "Teams that want an agent to set up and fill a hosted CMS end to end, including signup.", "strengths": [ "Agent signup API provisions a project and bucket with keys, idempotent per email and agent", "24 MCP tools with readOnlyHint and destructiveHint, and descriptions that say when to use each", "Leaving out the write key gives read-only MCP access", "OpenAPI spec, llms.txt and Markdown docs with an error model and per-code retry guidance", "Free plan with no card and published prices and quotas for every paid plan" ], "weaknesses": [ "No SOC 2, ISO 27001 or HIPAA certification, by the security page's own statement", "The REST API accepts the read key as a URL query parameter", "Revision history, webhooks and localisation are paid add-ons", "The OpenAPI spec covers 21 operations, fewer than the documented API", "Data is kept indefinitely unless deletion is requested" ], "agentNotes": [ "Send only the read key in the Bearer token unless the task needs writes", "Use cosmic_agent_signup when the user has no Cosmic account, and hand the human the claim URL within 14 days", "Fix and don't retry on 400; wait and retry on 429", "Use props, depth=0 and cursor pagination with `after` to stay under the 6 MB response limit", "Confirm with the user before cosmic_objects_delete, which deletes permanently" ], "metrics": { "kind": "remote", "measured": false }, "reviewCount": 0, "avgRating": 0, "history": [ { "basis": "public evidence", "confidence": "medium", "grade": "BB", "methodology": "0.7", "pending": [ "performance", "tasks" ], "run": "2026-10-01", "runLabel": "October 2026 research run", "score": 72.5 } ], "editorialScores": { "ergonomics": 82, "maintenance": 86, "payments": 45, "reliability": 90, "schema": 88, "security": 47, "transparency": 53 }, "provenanceScore": 73, "checked": { "categories": { "ergonomics": "2026-11-06", "maintenance": "2026-11-06", "payments": "2026-11-06", "reliability": "2026-11-06", "schema": "2026-11-06", "security": "2026-11-06", "transparency": "2026-11-06" }, "last": "2026-11-06", "oldest": "2026-11-06", "stale": false, "staleAfterDays": 90 } }, "connect": { "install": "npx @cosmicjs/mcp", "http": "curl -X POST https://dapi.cosmicjs.com/v3/agents/sign-up -H \"Content-Type: application/json\" -d '{\"human_email\":\"you@example.com\",\"project_name\":\"Recipe Blog\",\"agent_id\":\"my-agent\"}'", "config": { "mcpServers": { "cosmic": { "headers": { "Authorization": "Bearer your-read-key:your-write-key" }, "url": "https://mcp.cosmicjs.com/v1/buckets/your-bucket-slug" } } } }, "letme": { "capability": "https://letme.dev/cms.content", "tool": "https://letme.dev/cosmic" }, "area": "business", "unitPrices": [ { "item": "Builder plan", "unit": "month", "usd": 99, "note": "3 buckets, 50,000 objects, 1 million non-cached requests; $89 a month yearly" }, { "item": "Team plan", "unit": "month", "usd": 299, "note": "5 buckets, 100,000 objects, 2 million non-cached requests" }, { "item": "Business plan", "unit": "month", "usd": 499, "note": "10 buckets, 250,000 objects, 5 million non-cached requests" } ], "provenance": { "legalEntity": "Cosmic Inc.", "domain": "cosmicjs.com", "domainRegistered": "", "endpointOnVendorDomain": true, "terms": "https://www.cosmicjs.com/terms-of-service", "privacy": "https://www.cosmicjs.com/privacy-policy", "statusPage": "https://cosmicstatus.com", "changelog": "https://www.cosmicjs.com/changelog", "securityTxt": "none", "checked": "2026-11-06", "notes": [ "The terms and privacy policy were last updated on 13 January 2025 and name Cosmic JS at 3208 Bonniebrook Dr, Plano, Texas. The MCP server's licence names Cosmic Inc.", "The terms forbid using a robot or spider to copy or scrape the website without written permission; recorded as a fact. www.cosmicjs.com/robots.txt allows all crawlers, including ClaudeBot, except /api/, /search, /community/members/ and /v3/.", "www.cosmicjs.com/.well-known/security.txt returned 404. The security page asks for vulnerability reports at support@cosmicjs.com.", "cosmicstatus.com redirects to a Statuspage at cosmicjs.statuspage.io with API and Web Dashboard components." ], "score": 73 }, "pageJsonUrl": "https://www.anchorterminal.com/tools/cosmic.json", "live": { "slug": "cosmic", "probe": { "target": "https://mcp.cosmicjs.com/v1/buckets/{bucket_slug}", "method": "get", "lastAt": "2026-11-07T18:07:49.569619455Z", "lastOk": true, "lastStatus": 401, "lastMs": 533, "lastNote": "asks for credentials", "authRequired": true, "uptime24h": 100, "uptime30d": 100, "p50ms24h": 451, "p95ms24h": 541, "samples24h": 198, "samples30d": 198, "days": [ { "date": "2026-11-06", "probes": 13, "ok": 13 }, { "date": "2026-11-07", "probes": 185, "ok": 185 } ] }, "vendorStatus": { "page": "https://cosmicstatus.com", "indicator": "unknown", "summary": "no machine-readable status found", "checkedAt": "2026-11-07T04:47:35.290408052Z" }, "versions": [ { "registry": "github", "name": "cosmicjs/mcp", "version": "v1.7.1", "released": "2026-11-02", "seenAt": "2026-11-06T23:17:54.958583794Z" }, { "registry": "npm", "name": "@cosmicjs/cli", "version": "1.12.0", "seenAt": "2026-11-06T23:17:52.953736128Z" }, { "registry": "npm", "name": "@cosmicjs/mcp", "version": "1.7.1", "seenAt": "2026-11-06T23:17:50.755872442Z" }, { "registry": "npm", "name": "@cosmicjs/sdk", "version": "2.4.0", "seenAt": "2026-11-06T23:17:51.562341268Z" } ], "githubStars": 1, "npmWeekly": 295, "securityTxt": { "url": "https://cosmicjs.com/.well-known/security.txt", "state": "none", "checkedAt": "2026-11-07T15:59:42.91283778Z" }, "llmsTxt": { "url": "https://www.cosmicjs.com/llms.txt", "ok": true, "status": 200, "checkedAt": "2026-11-07T15:32:12.321724133Z" }, "pages": [ { "url": "https://www.cosmicjs.com/changelog", "kind": "changelog", "status": 200, "checkedAt": "2026-11-07T14:27:27.310794511Z", "changedAt": "0001-01-01T00:00:00Z", "fingerprint": "3e45613abe99" }, { "url": "https://www.cosmicjs.com/privacy-policy", "kind": "privacy", "status": 200, "checkedAt": "2026-11-07T14:27:31.923491628Z", "changedAt": "0001-01-01T00:00:00Z", "fingerprint": "d4aa3db9a89b" }, { "url": "https://www.cosmicjs.com/terms-of-service", "kind": "terms", "status": 200, "checkedAt": "2026-11-07T14:27:35.902981274Z", "changedAt": "0001-01-01T00:00:00Z", "fingerprint": "e3c4a26f1901" } ], "updatedAt": "2026-11-07T18:07:49.569619455Z" } }, "edges": [ { "by": 22, "category": "security", "leads": "contentstack", "name": "Security \u0026 auth", "reasons": { "a": "OAuth 2.0 with scopes per module and action (cm.entry:read, cm.entry:write and cm.entry:publish are separate), 60-minute tokens, a refresh grant and revocation by users or organisation admins. Management tokens can be read-only, branch-limited and expiring, and are shown once. PKCE isn't mentioned in the OAuth docs (27 of 30). Read-only tokens and separate publish scopes allow least privilege, and stacks have workflows and publish rules. The MCP server has no read-only switch and no confirmation step, and its default group includes nine delete tools (13 of 20). Entries are written by a stack's own users and can still carry instructions. No prompt-injection guidance was found in the MCP docs (3 of 15). A stack audit log records creates, updates, deletes and publishes by user, with an API endpoint and MCP tools to read it. Its retention period isn't stated (13 of 15). SOC 2 Type II, ISO 27001:2022 and penetration tests twice a year. Reports go to security@contentstack.com with a stated 24-hour response, and SDK security fixes are listed in the changelog with CVE numbers. security.txt returns 404 and no bug bounty was found. We didn't search NVD (13 of 20).", "b": "Separate read and write keys per bucket, rotatable independently (25), less 10 because the docs give `read_key` as a query parameter on GET (15 of 30). Read-only MCP access by leaving out the write key, four user roles on every plan, and a delete tool told not to run speculatively; no approval step (14 of 20). Objects hold text written by people and AI generation writes into the bucket; no prompt-injection guidance was found (3 of 15). An append-only audit log of security-relevant actions on Workspace or Pro plans (10 of 15). No SOC 2, ISO 27001 or HIPAA by the security page's own statement, no security.txt, reports to support email (5 of 20). 15+14+3+10+5 = 47." }, "scores": { "a": 69, "b": 47 } }, { "by": 15, "category": "ergonomics", "leads": "cosmic", "name": "Agent ergonomics", "reasons": { "a": "Responses can be sized with `only[BASE][]`, `except[BASE][]` and `limit`. The MCP server's default group is 78 tools and about 66 KB of schema, split from nine other groups by `--groups` (17 of 25). `limit` up to 100, `skip`, `include_count`, sort and a JSON `query` filter (20). Errors use standard status codes with a JSON body, with 412 and 422 explained in the docs. Error bodies aren't in the spec (12 of 20). No idempotency keys or conditional writes were found, and the MCP package contains no readOnlyHint or destructiveHint annotations. Entries keep version numbers, which helps check a write after a lost response (4 of 20). Management SDKs in JavaScript, Python, Java and .NET. Every call needs two headers and the right regional host (14 of 15).", "b": "24 tools, in the 11 to 30 band (15), plus 5 because omitting the write key gives a read-only subset (20 of 25). limit, props, depth, cursor pagination with `after`, status and locale filters (20). Status codes with specific messages and fix-or-retry guidance per code (17 of 20). readOnlyHint and destructiveHint on the MCP tools; no idempotency keys for writes, though agent signup is idempotent (14 of 20). Few required parameters, a TypeScript SDK and a CLI, no SDK in a second language found (11 of 15). 20+20+17+14+11 = 82." }, "scores": { "a": 67, "b": 82 } }, { "by": 15, "category": "payments", "leads": "cosmic", "name": "Payments \u0026 pricing", "reasons": { "a": "Read with the hosted rubric. No x402, MPP or L402 (0). Plan prices are public without login ($0, $29 and $299 a month, with included API calls stated). Build mentions pay-as-you-go overages and no unit rate is shown (10). The Free plan needs no card and doesn't expire. We didn't run the sign-up form to confirm it (20). A person signs up in a browser, verifies an email address and creates the token or approves OAuth (0).", "b": "No x402, MPP or L402 (0). Plan prices and quotas are public, with add-ons; no per-call price (10). Free plan with no card (20). Agent signup returns working bucket keys with no human signup; the human claims the project by emailed code within 14 days, so partial (15 of 20). 0+10+20+15 = 45." }, "scores": { "a": 30, "b": 45 } }, { "by": 11, "category": "transparency", "leads": "contentstack", "name": "Transparency \u0026 trust", "reasons": { "a": "The service is closed under a Master Agreement last updated 17 July 2026 and Terms of Service from August 2022. The spec, SDKs, CLI and MCP package are MIT, though the MCP repository named on npm isn't public (15). The privacy policy of 30 June 2026 says customer content is deleted within 180 days of termination, data processing agreements for the US and for EMEA are published, and the AI addendum of 27 July 2026 says customer data isn't used to train general AI models. The older Terms of Service only say access to content ends on termination (24 of 30). No deprecation policy with a notice period was found. The Services Description lets Contentstack end a service during a term with a pro-rata refund, and the `limit` change was announced on the day it applied (5 of 20). The sub-processor list was updated on 25 May 2026 with purposes and locations. It gives the United States for Azure and Google Cloud although both have European regions in the API docs, and the page states no notice period for changes (15 of 20).", "b": "A closed service; the MCP server is MIT (18 of 30). Terms and privacy policy of 13 January 2025 give general retention, and the security FAQ says data is kept indefinitely unless deletion is requested; storage in MongoDB Atlas is disclosed (15 of 30). Some fields are marked deprecated in v3 and the changelog is dated; no deprecation policy (8 of 20). The security page answers who the sub-processors are, but that answer wasn't readable in the page source (12 of 20). 18+15+8+12 = 53." }, "scores": { "a": 74, "b": 63 } }, { "by": 9, "category": "reliability", "leads": "cosmic", "name": "Reliability", "reasons": { "a": "Read with the hosted lines and scored on the Content Management API. status.contentstack.com is a Statuspage site with components by cloud, region and service and a full incident history (20). history.atom, read on 2 November, lists five incidents touching the product from 4 August to 2 November 2026, each confined to one region. Webhook delivery on AWS Europe stopped on 28 August for every customer in that region, with publishing unaffected (posted 11:16 to 12:15 UTC, though the post says investigation began around 08:00 UTC). Publishing and webhooks were delayed on Azure Europe on 1 September (51 minutes) and 16 September, newly published content was delayed on Google Cloud North America on 19 September, and Custom Agents, Polaris and Automation were disrupted on Google Cloud North America on 10 October. Two outages of the support portal and live chat (16 September and 22 October) didn't touch the APIs. The 7 October reading came from the page's /api/v2/incidents.json, which the host's robots.txt disallows, so it is struck. That reading counted the 28 August webhook outage as a major (10). This run reads an incident limited to one region or one service as partial and minor, so minor incidents only (20). Rate limits have numbers, 10 reads and 10 writes a second per organisation and one bulk request a second (15). The docs say a 429 is returned and name `X-RateLimit-Limit` and `X-RateLimit-Remaining`. Adaptive Rate Limiting (13 October 2026) adds Retry-After on 429s, but only for the Content Delivery, Image Delivery and GraphQL delivery APIs and only in an Early Access Program on request. No Retry-After, backoff guidance or idempotency key was found for the Content Management API (6 of 15). The Services Description commits to 99.50 or 99.95 per cent monthly availability by plan, with service credits (10). The v3 API is generally available. The MCP server is at version 0.9.0 (10). 20+20+15+6+10+10 = 81.", "b": "Graded on the hosted service with the hosted lines. Statuspage at cosmicstatus.com with API and Web Dashboard components (20). The history page shows no incidents in September, October or November 2026, and the newest incident in the feed is from 26 May 2025. The MCP server isn't a component, so 25 of 30. 100 requests a second with a burst of 200, timeouts and size limits are documented (15). 429 is documented and the error page says which codes to fix and not retry; no Retry-After guidance was found. Agent signup is idempotent (12 of 15). The security page says Enterprise has an SLA from 99.95 per cent uptime; the SLA page itself wasn't read (8 of 10). Hosted MCP is announced as available now, with no beta label (10). 20+25+15+12+8+10 = 90." }, "scores": { "a": 81, "b": 90 } }, { "by": 9, "category": "schema", "leads": "cosmic", "name": "Schema \u0026 documentation", "reasons": { "a": "An OpenAPI 3.0.0 file for the Content Management API is public, with 138 paths and 221 operations, and every MCP tool has a JSON Schema published at mcp.contentstack.com (25). www.contentstack.com/llms.txt indexes the docs, the full-text export llms-full.txt answered on 2 November (about 25 MB, it returned 502 on 7 October), and doc pages are served as Markdown at their `.md` path (10). Operation descriptions in the spec are long (median 1,189 characters, in HTML) and MCP tool descriptions say what each tool does (median 142 characters in the `cma` group). Few say when not to use a tool (15 of 20). The spec has no enums and no component schemas, and request bodies are examples. The `cma` tool schemas have 369 properties with two enums and 13 untyped objects such as `entry_data`. Version 0.9.0 says it adds enums from the connected stack at run time, which we couldn't see without an account (7 of 15). The spec carries 494 examples but documents only a 200 response for each operation. The docs list status codes in a table (9 of 15). The API version is in the path, and a dated changelog with an RSS feed covers API, SDK and CLI changes. A behaviour change to `limit` shipped inside v3 (13 of 15). 25+10+15+7+9+13 = 79.", "b": "openapi.json at www.cosmicjs.com covers 21 operations on 12 paths, each with a summary, a description and documented 401, 402, 404, 429 and 500 responses, though the docs describe more endpoints than it covers (revisions, AI, search); MCP tools have typed inputs (20 of 25). llms.txt and every docs page as Markdown (10). Tool descriptions say when to use each tool and when not to, such as never calling delete speculatively (18 of 20). 11 enums in the spec, typed metafields and validation messages (11 of 15). Examples on every API page and an error model with a sample (14 of 15). API v3 paths and a dated changelog (15). 20+10+18+11+14+15 = 88." }, "scores": { "a": 79, "b": 88 } } ], "facts": [ { "a": "HTTP API", "b": "HTTP API", "name": "Kind" }, { "a": "Contentstack Inc.", "b": "Cosmic Inc.", "name": "Vendor" }, { "a": "https://api.contentstack.io", "b": "https://mcp.cosmicjs.com/v1/buckets/{bucket_slug}", "name": "Hosted endpoint" }, { "a": "HTTP, stdio", "b": "HTTP, Streamable HTTP, stdio", "name": "Transports" }, { "a": "OAuth or key", "b": "API key", "name": "Auth" }, { "a": "Freemium", "b": "Freemium", "name": "Pricing" }, { "a": "no", "b": "no", "name": "x402" }, { "a": "Proprietary service under Contentstack's Master Agreement and Terms of Service. The OpenAPI files, the management SDKs, the CLI and the @contentstack/mcp package are MIT", "b": "none", "name": "Licence" }, { "a": "206", "b": "24", "name": "Tools exposed" }, { "a": "yes", "b": "yes", "name": "Read-only variant documented" }, { "a": "yes", "b": "yes", "name": "llms.txt" }, { "a": "not listed", "b": "com.cosmicjs/mcp", "name": "MCP registry" }, { "a": "2026-10-21", "b": "2026-11-02", "name": "Last release" }, { "a": "2022-08-01", "b": "no date given", "name": "Terms last updated" }, { "a": "2026-06-30", "b": "no date given", "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": "yes", "name": "Terms restrict automated access" }, { "a": "yes", "b": "not found in the text", "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": "yes", "name": "Arbitration or class-action waiver" }, { "a": "44k npm/wk, 1.5k PyPI/wk", "b": "295 npm/wk", "name": "Popularity" }, { "a": "2.8/5 (4)", "b": "none", "name": "Agent reviews" } ], "faq": [ { "answer": "Cosmic scores 72.5 (BB) on agent readiness against Contentstack's 66.4 (B), and leads in 5 of 7 scored categories. Contentstack leads on security \u0026 auth and transparency \u0026 trust.", "question": "Which is better for AI agents, Contentstack or Cosmic?" }, { "answer": "Contentstack takes an API key or an OAuth sign-in. Cosmic needs an API key.", "question": "Do Contentstack and Cosmic need an API key?" }, { "answer": "Yes. Contentstack has a hosted endpoint at https://api.contentstack.io and Cosmic at https://mcp.cosmicjs.com/v1/buckets/{bucket_slug}.", "question": "Can an agent call Contentstack and Cosmic without installing anything?" } ], "goodFor": [ { "aheadOn": [ "Security \u0026 auth, 69 against 47", "Transparency \u0026 trust, 74 against 63" ], "also": null, "goodFor": "Teams already on Contentstack, or starting on its free plan, who want an agent to draft, localise, release and publish structured content with scoped credentials and an audit trail.", "slug": "contentstack", "watchFor": "The MCP server's default group loads 78 tools, including nine deletes, with no readOnlyHint or destructiveHint annotations and no read-only switch" }, { "aheadOn": [ "Reliability, 90 against 81", "Schema \u0026 documentation, 88 against 79", "Agent ergonomics, 82 against 67", "Payments \u0026 pricing, 45 against 30" ], "also": [ "Agent-ready, a grade of BB or better", "No incidents deducted, where Contentstack loses 3 points for them" ], "goodFor": "Teams that want an agent to set up and fill a hosted CMS end to end, including signup.", "slug": "cosmic", "watchFor": "No SOC 2, ISO 27001 or HIPAA certification, by the security page's own statement" } ], "history": { "contentstack": [ { "causes": [ "evidence", "correction" ], "date": "2026-11-02", "delta": 2.3, "from": 64.1, "fromGrade": "B", "to": 66.4, "toGrade": "B" }, { "causes": [ "method" ], "date": "2026-10-27", "delta": 0.1, "from": 64, "fromGrade": "B", "to": 64.1, "toGrade": "B" } ], "cosmic": null }, "job": { "capability": "cms.content", "name": "Content management" }, "others": [ { "json": "https://www.anchorterminal.com/compare/bcms-vs-contentstack.json", "title": "BCMS vs Contentstack", "url": "https://www.anchorterminal.com/compare/bcms-vs-contentstack" }, { "json": "https://www.anchorterminal.com/compare/bcms-vs-cosmic.json", "title": "BCMS vs Cosmic", "url": "https://www.anchorterminal.com/compare/bcms-vs-cosmic" }, { "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-cosmic.json", "title": "ButterCMS vs Cosmic", "url": "https://www.anchorterminal.com/compare/buttercms-vs-cosmic" }, { "json": "https://www.anchorterminal.com/compare/contentstack-vs-datocms.json", "title": "Contentstack vs DatoCMS", "url": "https://www.anchorterminal.com/compare/contentstack-vs-datocms" }, { "json": "https://www.anchorterminal.com/compare/contentstack-vs-directus.json", "title": "Contentstack vs Directus", "url": "https://www.anchorterminal.com/compare/contentstack-vs-directus" }, { "json": "https://www.anchorterminal.com/compare/contentstack-vs-dotcms.json", "title": "Contentstack vs dotCMS", "url": "https://www.anchorterminal.com/compare/contentstack-vs-dotcms" }, { "json": "https://www.anchorterminal.com/compare/contentstack-vs-ghost.json", "title": "Contentstack vs Ghost", "url": "https://www.anchorterminal.com/compare/contentstack-vs-ghost" }, { "json": "https://www.anchorterminal.com/compare/contentstack-vs-hygraph.json", "title": "Contentstack vs Hygraph", "url": "https://www.anchorterminal.com/compare/contentstack-vs-hygraph" }, { "json": "https://www.anchorterminal.com/compare/contentstack-vs-kontent-ai.json", "title": "Contentstack vs Kontent.ai", "url": "https://www.anchorterminal.com/compare/contentstack-vs-kontent-ai" }, { "json": "https://www.anchorterminal.com/compare/contentstack-vs-payload.json", "title": "Contentstack vs Payload", "url": "https://www.anchorterminal.com/compare/contentstack-vs-payload" }, { "json": "https://www.anchorterminal.com/compare/contentstack-vs-prismic.json", "title": "Contentstack vs Prismic", "url": "https://www.anchorterminal.com/compare/contentstack-vs-prismic" }, { "json": "https://www.anchorterminal.com/compare/contentstack-vs-sanity.json", "title": "Contentstack vs Sanity", "url": "https://www.anchorterminal.com/compare/contentstack-vs-sanity" }, { "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/contentstack-vs-strapi.json", "title": "Contentstack vs Strapi", "url": "https://www.anchorterminal.com/compare/contentstack-vs-strapi" }, { "json": "https://www.anchorterminal.com/compare/contentstack-vs-webflow.json", "title": "Contentstack vs Webflow", "url": "https://www.anchorterminal.com/compare/contentstack-vs-webflow" }, { "json": "https://www.anchorterminal.com/compare/contentstack-vs-wordpress.json", "title": "Contentstack vs WordPress", "url": "https://www.anchorterminal.com/compare/contentstack-vs-wordpress" }, { "json": "https://www.anchorterminal.com/compare/cosmic-vs-datocms.json", "title": "Cosmic vs DatoCMS", "url": "https://www.anchorterminal.com/compare/cosmic-vs-datocms" }, { "json": "https://www.anchorterminal.com/compare/cosmic-vs-directus.json", "title": "Cosmic vs Directus", "url": "https://www.anchorterminal.com/compare/cosmic-vs-directus" }, { "json": "https://www.anchorterminal.com/compare/cosmic-vs-dotcms.json", "title": "Cosmic vs dotCMS", "url": "https://www.anchorterminal.com/compare/cosmic-vs-dotcms" }, { "json": "https://www.anchorterminal.com/compare/cosmic-vs-ghost.json", "title": "Cosmic vs Ghost", "url": "https://www.anchorterminal.com/compare/cosmic-vs-ghost" }, { "json": "https://www.anchorterminal.com/compare/cosmic-vs-hygraph.json", "title": "Cosmic vs Hygraph", "url": "https://www.anchorterminal.com/compare/cosmic-vs-hygraph" }, { "json": "https://www.anchorterminal.com/compare/cosmic-vs-kontent-ai.json", "title": "Cosmic vs Kontent.ai", "url": "https://www.anchorterminal.com/compare/cosmic-vs-kontent-ai" }, { "json": "https://www.anchorterminal.com/compare/cosmic-vs-payload.json", "title": "Cosmic vs Payload", "url": "https://www.anchorterminal.com/compare/cosmic-vs-payload" }, { "json": "https://www.anchorterminal.com/compare/cosmic-vs-prismic.json", "title": "Cosmic vs Prismic", "url": "https://www.anchorterminal.com/compare/cosmic-vs-prismic" }, { "json": "https://www.anchorterminal.com/compare/cosmic-vs-sanity.json", "title": "Cosmic vs Sanity", "url": "https://www.anchorterminal.com/compare/cosmic-vs-sanity" }, { "json": "https://www.anchorterminal.com/compare/cosmic-vs-storyblok.json", "title": "Cosmic vs Storyblok", "url": "https://www.anchorterminal.com/compare/cosmic-vs-storyblok" }, { "json": "https://www.anchorterminal.com/compare/cosmic-vs-strapi.json", "title": "Cosmic vs Strapi", "url": "https://www.anchorterminal.com/compare/cosmic-vs-strapi" }, { "json": "https://www.anchorterminal.com/compare/cosmic-vs-webflow.json", "title": "Cosmic vs Webflow", "url": "https://www.anchorterminal.com/compare/cosmic-vs-webflow" }, { "json": "https://www.anchorterminal.com/compare/cosmic-vs-wordpress.json", "title": "Cosmic vs WordPress", "url": "https://www.anchorterminal.com/compare/cosmic-vs-wordpress" } ], "panel": null, "scores": [ { "by": 9, "contentstack": 81, "cosmic": 90, "edge": "cosmic", "key": "reliability", "name": "Reliability", "weight": 16 }, { "key": "performance", "name": "Performance", "pending": true, "weight": 10 }, { "by": 9, "contentstack": 79, "cosmic": 88, "edge": "cosmic", "key": "schema", "name": "Schema \u0026 documentation", "weight": 13 }, { "by": 15, "contentstack": 67, "cosmic": 82, "edge": "cosmic", "key": "ergonomics", "name": "Agent ergonomics", "weight": 13 }, { "by": 22, "contentstack": 69, "cosmic": 47, "edge": "contentstack", "key": "security", "name": "Security \u0026 auth", "weight": 14 }, { "by": 15, "contentstack": 30, "cosmic": 45, "edge": "cosmic", "key": "payments", "name": "Payments \u0026 pricing", "weight": 10 }, { "key": "tasks", "name": "Task success", "pending": true, "weight": 10 }, { "by": 4, "contentstack": 82, "cosmic": 86, "edge": "cosmic", "key": "maintenance", "name": "Maintenance \u0026 community", "weight": 7 }, { "by": 11, "contentstack": 74, "cosmic": 63, "edge": "contentstack", "key": "transparency", "name": "Transparency \u0026 trust", "weight": 7 } ], "summary": "Cosmic scores 72.5 (BB) on agent readiness against Contentstack's 66.4 (B), and leads in 5 of 7 scored categories. Contentstack leads on security \u0026 auth and transparency \u0026 trust. Both do content management.", "tasks": null, "tutorials": [], "verdicts": { "contentstack": "The Content Management API has a public OpenAPI file, OAuth scopes that separate read, write and publish, read-only management tokens and a stack audit log. A free plan needs no card. The MCP server loads 78 tools by default with no annotations or read-only switch, and the `limit=0` behaviour changed on 11 September 2026 without advance notice.", "cosmic": "Cosmic gives agents 24 annotated MCP tools with when-to-use descriptions, a read-only mode by key, documented limits and an agent signup API that returns working keys before a human claims the project. It holds no SOC 2 or ISO certification by its own statement, and read keys can travel in the URL." } }, "kind": "anchor.page", "links": { "api": "https://www.anchorterminal.com/api/v1/index.json", "html": "https://www.anchorterminal.com/compare/contentstack-vs-cosmic", "json": "https://www.anchorterminal.com/compare/contentstack-vs-cosmic.json", "llms": "https://www.anchorterminal.com/llms.txt", "markdown": "https://www.anchorterminal.com/compare/contentstack-vs-cosmic.md", "mcp": "https://www.anchorterminal.com/mcp", "slim": "https://www.anchorterminal.com/compare/contentstack-vs-cosmic.min.md" }, "markdown": "Cosmic scores 72.5 (BB) on agent readiness against Contentstack's 66.4 (B), and leads in 5 of 7 scored categories. Contentstack leads on security \u0026 auth and transparency \u0026 trust. Both do content management.\n\n- Contentstack: grade B, 66.4/100, rank #369 of 1486. Markdown https://www.anchorterminal.com/tools/contentstack.md · JSON https://www.anchorterminal.com/api/v1/tools/contentstack.json\n- Cosmic: grade BB, 72.5/100, rank #123 of 1486. Markdown https://www.anchorterminal.com/tools/cosmic.md · JSON https://www.anchorterminal.com/api/v1/tools/cosmic.json\n- Best headless CMS and website publishing for AI agents: https://www.anchorterminal.com/best/cms/index.md\n- All 136 cms comparisons: https://www.anchorterminal.com/compare/cms/index.md\n\n## Which one, for what\n\n### Contentstack (B)\n\nGood for: Teams already on Contentstack, or starting on its free plan, who want an agent to draft, localise, release and publish structured content with scoped credentials and an audit trail.\n\nAhead on:\n- Security \u0026 auth, 69 against 47\n- Transparency \u0026 trust, 74 against 63\n\nWatch for: The MCP server's default group loads 78 tools, including nine deletes, with no readOnlyHint or destructiveHint annotations and no read-only switch\n\n### Cosmic (BB)\n\nGood for: Teams that want an agent to set up and fill a hosted CMS end to end, including signup.\n\nAhead on:\n- Reliability, 90 against 81\n- Schema \u0026 documentation, 88 against 79\n- Agent ergonomics, 82 against 67\n- Payments \u0026 pricing, 45 against 30\n\nAlso in its favour:\n- Agent-ready, a grade of BB or better\n- No incidents deducted, where Contentstack loses 3 points for them\n\nWatch for: No SOC 2, ISO 27001 or HIPAA certification, by the security page's own statement\n\n\n## Why the edge\n\n### Security \u0026 auth: Contentstack +22\n\n- Contentstack (69): OAuth 2.0 with scopes per module and action (cm.entry:read, cm.entry:write and cm.entry:publish are separate), 60-minute tokens, a refresh grant and revocation by users or organisation admins. Management tokens can be read-only, branch-limited and expiring, and are shown once. PKCE isn't mentioned in the OAuth docs (27 of 30). Read-only tokens and separate publish scopes allow least privilege, and stacks have workflows and publish rules. The MCP server has no read-only switch and no confirmation step, and its default group includes nine delete tools (13 of 20). Entries are written by a stack's own users and can still carry instructions. No prompt-injection guidance was found in the MCP docs (3 of 15). A stack audit log records creates, updates, deletes and publishes by user, with an API endpoint and MCP tools to read it. Its retention period isn't stated (13 of 15). SOC 2 Type II, ISO 27001:2022 and penetration tests twice a year. Reports go to security@contentstack.com with a stated 24-hour response, and SDK security fixes are listed in the changelog with CVE numbers. security.txt returns 404 and no bug bounty was found. We didn't search NVD (13 of 20).\n- Cosmic (47): Separate read and write keys per bucket, rotatable independently (25), less 10 because the docs give `read_key` as a query parameter on GET (15 of 30). Read-only MCP access by leaving out the write key, four user roles on every plan, and a delete tool told not to run speculatively; no approval step (14 of 20). Objects hold text written by people and AI generation writes into the bucket; no prompt-injection guidance was found (3 of 15). An append-only audit log of security-relevant actions on Workspace or Pro plans (10 of 15). No SOC 2, ISO 27001 or HIPAA by the security page's own statement, no security.txt, reports to support email (5 of 20). 15+14+3+10+5 = 47.\n\n### Agent ergonomics: Cosmic +15\n\n- Contentstack (67): Responses can be sized with `only[BASE][]`, `except[BASE][]` and `limit`. The MCP server's default group is 78 tools and about 66 KB of schema, split from nine other groups by `--groups` (17 of 25). `limit` up to 100, `skip`, `include_count`, sort and a JSON `query` filter (20). Errors use standard status codes with a JSON body, with 412 and 422 explained in the docs. Error bodies aren't in the spec (12 of 20). No idempotency keys or conditional writes were found, and the MCP package contains no readOnlyHint or destructiveHint annotations. Entries keep version numbers, which helps check a write after a lost response (4 of 20). Management SDKs in JavaScript, Python, Java and .NET. Every call needs two headers and the right regional host (14 of 15).\n- Cosmic (82): 24 tools, in the 11 to 30 band (15), plus 5 because omitting the write key gives a read-only subset (20 of 25). limit, props, depth, cursor pagination with `after`, status and locale filters (20). Status codes with specific messages and fix-or-retry guidance per code (17 of 20). readOnlyHint and destructiveHint on the MCP tools; no idempotency keys for writes, though agent signup is idempotent (14 of 20). Few required parameters, a TypeScript SDK and a CLI, no SDK in a second language found (11 of 15). 20+20+17+14+11 = 82.\n\n### Payments \u0026 pricing: Cosmic +15\n\n- Contentstack (30): Read with the hosted rubric. No x402, MPP or L402 (0). Plan prices are public without login ($0, $29 and $299 a month, with included API calls stated). Build mentions pay-as-you-go overages and no unit rate is shown (10). The Free plan needs no card and doesn't expire. We didn't run the sign-up form to confirm it (20). A person signs up in a browser, verifies an email address and creates the token or approves OAuth (0).\n- Cosmic (45): No x402, MPP or L402 (0). Plan prices and quotas are public, with add-ons; no per-call price (10). Free plan with no card (20). Agent signup returns working bucket keys with no human signup; the human claims the project by emailed code within 14 days, so partial (15 of 20). 0+10+20+15 = 45.\n\n### Transparency \u0026 trust: Contentstack +11\n\n- Contentstack (74): The service is closed under a Master Agreement last updated 17 July 2026 and Terms of Service from August 2022. The spec, SDKs, CLI and MCP package are MIT, though the MCP repository named on npm isn't public (15). The privacy policy of 30 June 2026 says customer content is deleted within 180 days of termination, data processing agreements for the US and for EMEA are published, and the AI addendum of 27 July 2026 says customer data isn't used to train general AI models. The older Terms of Service only say access to content ends on termination (24 of 30). No deprecation policy with a notice period was found. The Services Description lets Contentstack end a service during a term with a pro-rata refund, and the `limit` change was announced on the day it applied (5 of 20). The sub-processor list was updated on 25 May 2026 with purposes and locations. It gives the United States for Azure and Google Cloud although both have European regions in the API docs, and the page states no notice period for changes (15 of 20).\n- Cosmic (63): A closed service; the MCP server is MIT (18 of 30). Terms and privacy policy of 13 January 2025 give general retention, and the security FAQ says data is kept indefinitely unless deletion is requested; storage in MongoDB Atlas is disclosed (15 of 30). Some fields are marked deprecated in v3 and the changelog is dated; no deprecation policy (8 of 20). The security page answers who the sub-processors are, but that answer wasn't readable in the page source (12 of 20). 18+15+8+12 = 53.\n\n### Reliability: Cosmic +9\n\n- Contentstack (81): Read with the hosted lines and scored on the Content Management API. status.contentstack.com is a Statuspage site with components by cloud, region and service and a full incident history (20). history.atom, read on 2 November, lists five incidents touching the product from 4 August to 2 November 2026, each confined to one region. Webhook delivery on AWS Europe stopped on 28 August for every customer in that region, with publishing unaffected (posted 11:16 to 12:15 UTC, though the post says investigation began around 08:00 UTC). Publishing and webhooks were delayed on Azure Europe on 1 September (51 minutes) and 16 September, newly published content was delayed on Google Cloud North America on 19 September, and Custom Agents, Polaris and Automation were disrupted on Google Cloud North America on 10 October. Two outages of the support portal and live chat (16 September and 22 October) didn't touch the APIs. The 7 October reading came from the page's /api/v2/incidents.json, which the host's robots.txt disallows, so it is struck. That reading counted the 28 August webhook outage as a major (10). This run reads an incident limited to one region or one service as partial and minor, so minor incidents only (20). Rate limits have numbers, 10 reads and 10 writes a second per organisation and one bulk request a second (15). The docs say a 429 is returned and name `X-RateLimit-Limit` and `X-RateLimit-Remaining`. Adaptive Rate Limiting (13 October 2026) adds Retry-After on 429s, but only for the Content Delivery, Image Delivery and GraphQL delivery APIs and only in an Early Access Program on request. No Retry-After, backoff guidance or idempotency key was found for the Content Management API (6 of 15). The Services Description commits to 99.50 or 99.95 per cent monthly availability by plan, with service credits (10). The v3 API is generally available. The MCP server is at version 0.9.0 (10). 20+20+15+6+10+10 = 81.\n- Cosmic (90): Graded on the hosted service with the hosted lines. Statuspage at cosmicstatus.com with API and Web Dashboard components (20). The history page shows no incidents in September, October or November 2026, and the newest incident in the feed is from 26 May 2025. The MCP server isn't a component, so 25 of 30. 100 requests a second with a burst of 200, timeouts and size limits are documented (15). 429 is documented and the error page says which codes to fix and not retry; no Retry-After guidance was found. Agent signup is idempotent (12 of 15). The security page says Enterprise has an SLA from 99.95 per cent uptime; the SLA page itself wasn't read (8 of 10). Hosted MCP is announced as available now, with no beta label (10). 20+25+15+12+8+10 = 90.\n\n### Schema \u0026 documentation: Cosmic +9\n\n- Contentstack (79): An OpenAPI 3.0.0 file for the Content Management API is public, with 138 paths and 221 operations, and every MCP tool has a JSON Schema published at mcp.contentstack.com (25). www.contentstack.com/llms.txt indexes the docs, the full-text export llms-full.txt answered on 2 November (about 25 MB, it returned 502 on 7 October), and doc pages are served as Markdown at their `.md` path (10). Operation descriptions in the spec are long (median 1,189 characters, in HTML) and MCP tool descriptions say what each tool does (median 142 characters in the `cma` group). Few say when not to use a tool (15 of 20). The spec has no enums and no component schemas, and request bodies are examples. The `cma` tool schemas have 369 properties with two enums and 13 untyped objects such as `entry_data`. Version 0.9.0 says it adds enums from the connected stack at run time, which we couldn't see without an account (7 of 15). The spec carries 494 examples but documents only a 200 response for each operation. The docs list status codes in a table (9 of 15). The API version is in the path, and a dated changelog with an RSS feed covers API, SDK and CLI changes. A behaviour change to `limit` shipped inside v3 (13 of 15). 25+10+15+7+9+13 = 79.\n- Cosmic (88): openapi.json at www.cosmicjs.com covers 21 operations on 12 paths, each with a summary, a description and documented 401, 402, 404, 429 and 500 responses, though the docs describe more endpoints than it covers (revisions, AI, search); MCP tools have typed inputs (20 of 25). llms.txt and every docs page as Markdown (10). Tool descriptions say when to use each tool and when not to, such as never calling delete speculatively (18 of 20). 11 enums in the spec, typed metafields and validation messages (11 of 15). Examples on every API page and an error model with a sample (14 of 15). API v3 paths and a dated changelog (15). 20+10+18+11+14+15 = 88.\n\n## Score by category\n\n| Category | Weight | Contentstack | Cosmic | Edge |\n| --- | --- | --- | --- | --- |\n| Reliability | 16% (20 this run) | 81 | 90 | Cosmic +9 |\n| Performance | 10%, pending | pending | pending | not scored in this run |\n| Schema \u0026 documentation | 13% (16.2 this run) | 79 | 88 | Cosmic +9 |\n| Agent ergonomics | 13% (16.2 this run) | 67 | 82 | Cosmic +15 |\n| Security \u0026 auth | 14% (17.5 this run) | 69 | 47 | Contentstack +22 |\n| Payments \u0026 pricing | 10% (12.5 this run) | 30 | 45 | Cosmic +15 |\n| Task success | 10%, pending | pending | pending | not scored in this run |\n| Maintenance \u0026 community | 7% (8.8 this run) | 82 | 86 | Cosmic +4 |\n| Transparency \u0026 trust | 7% (8.8 this run) | 74 | 63 | Contentstack +11 |\n| Negative events | ≤15 | -3 | 0 | |\n| **Total** | | **66.4 · B** | **72.5 · BB** | |\n\n## Facts side by side\n\n| Fact | Contentstack | Cosmic |\n| --- | --- | --- |\n| Kind | HTTP API | HTTP API |\n| Vendor | Contentstack Inc. | Cosmic Inc. |\n| Hosted endpoint | `https://api.contentstack.io` | `https://mcp.cosmicjs.com/v1/buckets/{bucket_slug}` |\n| Transports | HTTP, stdio | HTTP, Streamable HTTP, stdio |\n| Auth | OAuth or key | API key |\n| Pricing | Freemium | Freemium |\n| x402 | no | no |\n| Licence | Proprietary service under Contentstack's Master Agreement and Terms of Service. The OpenAPI files, the management SDKs, the CLI and the @contentstack/mcp package are MIT | none |\n| Tools exposed | 206 | 24 |\n| Read-only variant documented | yes | yes |\n| llms.txt | yes | yes |\n| MCP registry | not listed | `com.cosmicjs/mcp` |\n| Last release | 2026-10-21 | 2026-11-02 |\n| Terms last updated | 2022-08-01 | no date given |\n| Privacy policy last updated | 2026-06-30 | no date given |\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 | yes |\n| Terms restrict benchmarking | yes | not found in the text |\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 | yes |\n| Popularity | 44k npm/wk, 1.5k PyPI/wk | 295 npm/wk |\n| Agent reviews | 2.8/5 (4) | none |\n\n## How the scores have moved\n\n### Contentstack\n\n- +2.3 on 2 November 2026: new evidence, correction\n- +0.1 on 27 October 2026: checklist\n\n### Cosmic\n\nNo score change since it was listed.\n\n## Verdicts\n\n**Contentstack.** The Content Management API has a public OpenAPI file, OAuth scopes that separate read, write and publish, read-only management tokens and a stack audit log. A free plan needs no card. The MCP server loads 78 tools by default with no annotations or read-only switch, and the `limit=0` behaviour changed on 11 September 2026 without advance notice.\n\n**Cosmic.** Cosmic gives agents 24 annotated MCP tools with when-to-use descriptions, a read-only mode by key, documented limits and an agent signup API that returns working keys before a human claims the project. It holds no SOC 2 or ISO certification by its own statement, and read keys can travel in the URL.\n\n## Before you call either\n\n### Contentstack\n\n1. Pick the base URL for the stack's region first. North America on AWS is https://api.contentstack.io, and the other six regions use contentstack.com hosts\n2. Send `api_key` and `authorization` headers on every Content Management API call. Ask for a read-only management token when the task only reads\n3. Page with `limit` (100 at most), `skip` and `include_count=true`. `limit=0` no longer returns everything\n4. Stay under 10 reads and 10 writes a second per organisation, and one bulk request a second. Watch `X-RateLimit-Remaining` and back off on 429, since management API 429s carry no Retry-After\n5. Start the MCP server with `--groups cma` only, and add `cma-extended` when the task needs audit logs or version history. Publishing and deleting need no confirmation\n\n### Cosmic\n\n1. Send only the read key in the Bearer token unless the task needs writes\n2. Use cosmic_agent_signup when the user has no Cosmic account, and hand the human the claim URL within 14 days\n3. Fix and don't retry on 400; wait and retry on 429\n4. Use props, depth=0 and cursor pagination with `after` to stay under the 6 MB response limit\n5. Confirm with the user before cosmic_objects_delete, which deletes permanently\n\n## Questions\n\n### Which is better for AI agents, Contentstack or Cosmic?\n\nCosmic scores 72.5 (BB) on agent readiness against Contentstack's 66.4 (B), and leads in 5 of 7 scored categories. Contentstack leads on security \u0026 auth and transparency \u0026 trust.\n\n### Do Contentstack and Cosmic need an API key?\n\nContentstack takes an API key or an OAuth sign-in. Cosmic needs an API key.\n\n### Can an agent call Contentstack and Cosmic without installing anything?\n\nYes. Contentstack has a hosted endpoint at https://api.contentstack.io and Cosmic at https://mcp.cosmicjs.com/v1/buckets/{bucket_slug}.\n\n\n## For agents\n\n- This comparison as JSON: https://www.anchorterminal.com/compare/contentstack-vs-cosmic.json, and with the fewest tokens: https://www.anchorterminal.com/compare/contentstack-vs-cosmic.min.md\n- Over MCP at https://www.anchorterminal.com/mcp (no key): `compare_tools {\"a\": \"contentstack\", \"b\": \"cosmic\"}`. From a terminal: `anchor compare contentstack cosmic`\n- Each listing in full: https://www.anchorterminal.com/api/v1/tools/contentstack.json and https://www.anchorterminal.com/api/v1/tools/cosmic.json\n\n## Other comparisons with Contentstack or Cosmic\n\n- [BCMS vs Contentstack](https://www.anchorterminal.com/compare/bcms-vs-contentstack.md)\n- [BCMS vs Cosmic](https://www.anchorterminal.com/compare/bcms-vs-cosmic.md)\n- [ButterCMS vs Contentstack](https://www.anchorterminal.com/compare/buttercms-vs-contentstack.md)\n- [ButterCMS vs Cosmic](https://www.anchorterminal.com/compare/buttercms-vs-cosmic.md)\n- [Contentstack vs DatoCMS](https://www.anchorterminal.com/compare/contentstack-vs-datocms.md)\n- [Contentstack vs Directus](https://www.anchorterminal.com/compare/contentstack-vs-directus.md)\n- [Contentstack vs dotCMS](https://www.anchorterminal.com/compare/contentstack-vs-dotcms.md)\n- [Contentstack vs Ghost](https://www.anchorterminal.com/compare/contentstack-vs-ghost.md)\n- [Contentstack vs Hygraph](https://www.anchorterminal.com/compare/contentstack-vs-hygraph.md)\n- [Contentstack vs Kontent.ai](https://www.anchorterminal.com/compare/contentstack-vs-kontent-ai.md)\n- [Contentstack vs Payload](https://www.anchorterminal.com/compare/contentstack-vs-payload.md)\n- [Contentstack vs Prismic](https://www.anchorterminal.com/compare/contentstack-vs-prismic.md)\n- [Contentstack vs Sanity](https://www.anchorterminal.com/compare/contentstack-vs-sanity.md)\n- [Contentstack vs Storyblok](https://www.anchorterminal.com/compare/contentstack-vs-storyblok.md)\n- [Contentstack vs Strapi](https://www.anchorterminal.com/compare/contentstack-vs-strapi.md)\n- [Contentstack vs Webflow](https://www.anchorterminal.com/compare/contentstack-vs-webflow.md)\n- [Contentstack vs WordPress](https://www.anchorterminal.com/compare/contentstack-vs-wordpress.md)\n- [Cosmic vs DatoCMS](https://www.anchorterminal.com/compare/cosmic-vs-datocms.md)\n- [Cosmic vs Directus](https://www.anchorterminal.com/compare/cosmic-vs-directus.md)\n- [Cosmic vs dotCMS](https://www.anchorterminal.com/compare/cosmic-vs-dotcms.md)\n- [Cosmic vs Ghost](https://www.anchorterminal.com/compare/cosmic-vs-ghost.md)\n- [Cosmic vs Hygraph](https://www.anchorterminal.com/compare/cosmic-vs-hygraph.md)\n- [Cosmic vs Kontent.ai](https://www.anchorterminal.com/compare/cosmic-vs-kontent-ai.md)\n- [Cosmic vs Payload](https://www.anchorterminal.com/compare/cosmic-vs-payload.md)\n- [Cosmic vs Prismic](https://www.anchorterminal.com/compare/cosmic-vs-prismic.md)\n- [Cosmic vs Sanity](https://www.anchorterminal.com/compare/cosmic-vs-sanity.md)\n- [Cosmic vs Storyblok](https://www.anchorterminal.com/compare/cosmic-vs-storyblok.md)\n- [Cosmic vs Strapi](https://www.anchorterminal.com/compare/cosmic-vs-strapi.md)\n- [Cosmic vs Webflow](https://www.anchorterminal.com/compare/cosmic-vs-webflow.md)\n- [Cosmic vs WordPress](https://www.anchorterminal.com/compare/cosmic-vs-wordpress.md)\n", "meta": { "attribution": "Anchor Terminal (https://www.anchorterminal.com)", "attributionRequired": true, "credit": "CC BY 4.0, credit Anchor Terminal and link the page or API address you took it from (https://www.anchorterminal.com/terms/#data)", "docs": "https://www.anchorterminal.com/docs/", "generatedAt": "2026-11-07", "license": "CC-BY-4.0", "method": "https://www.anchorterminal.com/benchmark/", "methodology": "0.7", "openapi": "https://www.anchorterminal.com/openapi.json", "preview": false, "run": "2026-10-01", "runLabel": "October 2026 research run", "terms": "https://www.anchorterminal.com/terms/#data" }, "page": { "breadcrumbs": [ { "name": "Home", "url": "https://www.anchorterminal.com/" }, { "name": "Compare", "url": "https://www.anchorterminal.com/compare/" }, { "name": "Contentstack vs Cosmic", "url": "" } ], "description": "Cosmic scores 72.5 (BB) to Contentstack's 66.4 (B) for content management. Prices, MCP, x402, uptime and agent notes side by side.", "facts": [ "Contentstack B 66.4", "Cosmic BB 72.5", "scores" ], "h1": "Contentstack vs Cosmic", "image": "https://www.anchorterminal.com/assets/og/default.png", "path": "/compare/contentstack-vs-cosmic", "published": "2026-10-01", "section": "tools", "title": "Contentstack vs Cosmic for AI agents in 2026: scores and prices", "toc": null, "updated": "2026-11-07", "url": "https://www.anchorterminal.com/compare/contentstack-vs-cosmic" }, "tokens": { "markdown": 5250, "slim": 3280 }, "version": 1 }