{ "data": { "a": { "slug": "growthbook", "name": "GrowthBook", "vendor": "GrowthBook, Inc.", "vendorUrl": "https://www.growthbook.io", "kind": "http-api", "category": "product-analytics", "summary": "GrowthBook is an open-source platform for feature flags, experiments and product analytics, sold as GrowthBook Cloud or run self-hosted. Agents reach it through a REST API with a public OpenAPI spec and an official MCP server.", "url": "https://www.anchorterminal.com/tools/growthbook", "markdownUrl": "https://www.anchorterminal.com/tools/growthbook.md", "slimMarkdownUrl": "https://www.anchorterminal.com/tools/growthbook.min.md", "jsonUrl": "https://www.anchorterminal.com/api/v1/tools/growthbook.json", "repo": "https://github.com/growthbook/growthbook", "license": "MIT for the core and for the MCP server. Three enterprise directories in the main repository are under GrowthBook's enterprise licence. GrowthBook Cloud is a hosted service under the Customer Agreement", "transports": [ "http", "streamable-http", "stdio" ], "remoteUrl": "https://mcp.growthbook.io/mcp", "packages": [ { "registry": "npm", "name": "@growthbook/mcp" }, { "registry": "npm", "name": "@growthbook/growthbook" }, { "registry": "pypi", "name": "growthbook" } ], "auth": "mixed", "authNotes": "The hosted MCP server uses OAuth with PKCE, dynamic client registration, refresh tokens and a revocation endpoint, with api.growthbook.io as the authorisation server. A person signs in and consents in a browser. The only scopes are openid, profile, email and offline_access, so the token carries the user's own permissions. The REST API takes a Personal Access Token or a Secret Key as a Bearer token or as the HTTP Basic username. Both are self-serve in the app. A Secret Key can hold any built-in or custom role with per-project overrides and environment limits, and both key types can expire. On the Free plan members can only hold the Admin role.", "pricing": "freemium", "pricingNotes": "Starter is free with no card, for up to 3 users and 1 project, so an agent's owner can start without a contract. Pro is $40 a seat a month for up to 30 users. Enterprise is by contract. Flags, experiments and traffic are unlimited on every plan, and API and MCP calls are not billed. Pro meters CDN requests, CDN bandwidth and Managed Warehouse events above its allowance. Self-hosting the open-source edition is free (https://www.growthbook.io/pricing, checked 2026-10-08).", "priceSummary": "$40 / seat-mo", "where": "both", "x402": { "level": "no", "evidence": "No x402, MPP or L402 in the docs index, the OpenAPI spec, the MCP server source or the pricing page (checked 2026-10-08).", "endpoints": [] }, "toolCount": 4, "popularity": { "githubStars": 8484, "npmWeekly": 1290544, "pypiWeekly": 432892, "asOf": "2026-10-08" }, "docsUrl": "https://docs.growthbook.io", "llmsTxt": "https://docs.growthbook.io/llms.txt", "openapi": "https://api.growthbook.io/api/v1/openapi.yaml", "registryName": "io.github.growthbook/growthbook-mcp", "capabilities": [ "analytics.experiments", "analytics.flags", "analytics.query", "analytics.events" ], "tags": [ "official", "hosted", "open-source", "self-hosted", "mcp", "oauth", "openapi", "llms-txt", "free-tier", "no-card", "status-page", "soc2" ], "lastRelease": "2026-10-06", "graded": true, "anchor": { "graded": true, "score": 70.1, "grade": "BB", "agentReady": true, "rank": 142, "ranked": true, "rankOf": 722, "categoryRank": 2, "methodology": "0.4", "run": "2026-10-01", "scores": { "ergonomics": 76, "maintenance": 89, "payments": 40, "reliability": 86, "schema": 76, "security": 68, "transparency": 74 }, "pending": [ "performance", "tasks" ], "assessment": { "confidence": "medium", "date": "2026-10-08" }, "negative": -3, "negativeNotes": [ "10 August 2026. MCP server 2.1.0 replaced `growthbook_call_api` with two tools in a minor version, eleven days after 2.0.0 removed every 1.x tool, while the docs tell users to install `@growthbook/mcp@latest`. Both are marked breaking in the changelog with migration steps, and we found no advance notice, so the deduction is the minimum (https://github.com/growthbook/growthbook-mcp/blob/main/CHANGELOG.md)." ], "verdict": "GrowthBook Cloud's MCP server has four tools with read and write annotations, OAuth with dynamic client registration, and a 414-operation OpenAPI spec behind it. The free plan needs no card. The API tools pass paths and JSON bodies through without validation, every key is limited to 60 requests a minute, and audit logs are Enterprise only.", "bestFor": "Teams that want flags and experiments analysed against their own warehouse, with an open-source core and a self-hosted option.", "strengths": [ "The MCP server has four tools, each with readOnlyHint and destructiveHint, and a second endpoint with only the two API tools", "OAuth with PKCE, dynamic client registration, refresh and revocation on GrowthBook Cloud, so no API key sits in the MCP config", "Public OpenAPI 3.1 spec with 306 paths and 414 operations, plus llms.txt and a Markdown copy of every docs page", "Starter plan is free with no card, with unlimited flags, experiments and traffic for up to 3 users", "MIT core with a self-hosted option, and the same MCP server published on npm and as a Docker image" ], "weaknesses": [ "The API tools take a path and a JSON string and don't validate payloads, so correct calls depend on the bundled skills", "API keys are limited to 60 requests a minute on Cloud, and no idempotency keys were found", "Audit logging is an Enterprise feature, and Free plan members can only hold the Admin role", "The Customer Agreement grants GrowthBook a right to use Customer Data to train its AI algorithms, and no opt-out was found", "MCP 2.0.0 and 2.1.0 replaced the whole tool surface in July and August 2026, the second in a minor version" ], "agentNotes": [ "Connect to https://mcp.growthbook.io/mcp and complete OAuth in a browser. Use https://mcp.growthbook.io/mcp/api for the two API tools alone", "Call `growthbook_list_skills` and `growthbook_read_skill` before writing. The API tools don't validate payloads, so use the paths the skill names", "Stay under 60 requests a minute per key. On 429 wait for the `RateLimit-Reset` seconds before retrying", "List calls return 10 items by default. Pass `limit` up to 100 and `offset` to page", "A 422 is a soft warning. Resubmit with `?ignoreWarnings=true` only after reading the message" ], "metrics": { "kind": "remote", "measured": false }, "reviewCount": 0, "avgRating": 0, "history": [ { "basis": "public evidence", "confidence": "medium", "grade": "BB", "methodology": "0.4", "pending": [ "performance", "tasks" ], "run": "2026-10-01", "runLabel": "October 2026 research run", "score": 70.1 } ], "editorialScores": { "ergonomics": 76, "maintenance": 89, "payments": 40, "reliability": 86, "schema": 76, "security": 68, "transparency": 66 }, "provenanceScore": 81 }, "connect": { "install": "npx -y @growthbook/mcp@latest", "http": "curl https://api.growthbook.io/api/v1/features -H \"Authorization: Bearer secret_abc123DEF456\"", "claudeCode": "claude mcp add --transport http growthbook https://mcp.growthbook.io/mcp", "config": { "mcpServers": { "growthbook": { "url": "https://mcp.growthbook.io/mcp" } } } }, "letme": { "capability": "https://letme.dev/analytics.experiments", "tool": "https://letme.dev/growthbook" }, "area": "business", "unitPrices": [ { "item": "Pro plan seat", "unit": "seat-month", "usd": 40, "note": "Up to 30 users and 3 projects" }, { "item": "CDN requests", "unit": "1k-requests", "usd": 0.01, "note": "Pro plan, above 2 million a month ($10 per million)" }, { "item": "Managed Warehouse event", "unit": "tx", "usd": 0.00003, "note": "Pro plan, above 2 million a month ($30 per million)" }, { "item": "CDN bandwidth", "unit": "gb", "usd": 1, "note": "Pro plan, above 20 GB a month" } ], "provenance": { "legalEntity": "GrowthBook, Inc.", "domain": "growthbook.io", "domainRegistered": "2020-05-19", "endpointOnVendorDomain": true, "terms": "https://www.growthbook.io/legal/customer-agreement", "privacy": "https://www.growthbook.io/legal/privacy-notice", "statusPage": "https://status.growthbook.io", "changelog": "https://github.com/growthbook/growthbook/releases", "securityTxt": "none", "checked": "2026-10-08", "notes": [ "The Customer Agreement (effective 19 June 2025) is between the customer and GrowthBook, Inc., with notices to 1950 W Corporate Way #34560, Anaheim, CA 92801, under California law.", "The Privacy Notice (effective 8 June 2026) covers the website and related services and names GrowthBook, Inc. at the same address. The Customer Agreement refers to it for Customer Data.", "The MCP server answers at mcp.growthbook.io and the REST API at api.growthbook.io. OAuth metadata names https://api.growthbook.io as issuer.", "www.growthbook.io/.well-known/security.txt and growthbook.io/.well-known/security.txt return 404. Reports go to a form on the disclosure page or to security@growthbook.io.", "RDAP for growthbook.io gives a registration date of 2020-05-19.", "The MCP server keeps its own changelog at https://github.com/growthbook/growthbook-mcp/blob/main/CHANGELOG.md." ], "score": 81 }, "pageJsonUrl": "https://www.anchorterminal.com/tools/growthbook.json", "live": { "slug": "growthbook", "probe": { "target": "https://mcp.growthbook.io/mcp", "method": "get", "lastAt": "2026-10-08T19:52:52.227177783Z", "lastOk": true, "lastStatus": 401, "lastMs": 251, "lastNote": "asks for credentials", "authRequired": true, "uptime24h": 100, "uptime30d": 100, "p50ms24h": 257, "p95ms24h": 331, "samples24h": 27, "samples30d": 27, "days": [ { "date": "2026-10-08", "probes": 27, "ok": 27 } ] }, "vendorStatus": { "page": "https://status.growthbook.io", "indicator": "unknown", "summary": "no machine-readable status found", "checkedAt": "2026-10-08T19:38:39.1501551Z" }, "pages": [ { "url": "https://www.growthbook.io/pricing", "kind": "pricing", "status": 200, "checkedAt": "2026-10-08T18:28:10.646220771Z", "changedAt": "0001-01-01T00:00:00Z", "fingerprint": "aa2bc7a1a779" }, { "url": "https://www.growthbook.io/legal/privacy-notice", "kind": "privacy", "status": 200, "checkedAt": "2026-10-08T18:28:08.637436983Z", "changedAt": "0001-01-01T00:00:00Z", "fingerprint": "e574320b3fc5" }, { "url": "https://www.growthbook.io/legal/customer-agreement", "kind": "terms", "status": 200, "checkedAt": "2026-10-08T18:28:06.588048036Z", "changedAt": "0001-01-01T00:00:00Z", "fingerprint": "d5b28f2fb91f" } ], "updatedAt": "2026-10-08T19:52:52.227177783Z" } }, "answer": "GrowthBook and LaunchDarkly score within a point of each other on agent readiness, 70.1 (BB) and 69.2 (B). LaunchDarkly leads on schema \u0026 documentation and transparency \u0026 trust.", "b": { "slug": "launchdarkly", "name": "LaunchDarkly", "vendor": "Catamorphic, Co. (dba LaunchDarkly)", "vendorUrl": "https://launchdarkly.com", "kind": "http-api", "category": "product-analytics", "summary": "LaunchDarkly is a hosted feature flag and experimentation platform from Catamorphic, Co., with observability and AI configuration products. Agents reach it through an official hosted MCP server with OAuth and a REST API with a public OpenAPI spec.", "url": "https://www.anchorterminal.com/tools/launchdarkly", "markdownUrl": "https://www.anchorterminal.com/tools/launchdarkly.md", "slimMarkdownUrl": "https://www.anchorterminal.com/tools/launchdarkly.min.md", "jsonUrl": "https://www.anchorterminal.com/api/v1/tools/launchdarkly.json", "repo": "https://github.com/launchdarkly/mcp-server", "license": "Proprietary service under LaunchDarkly's terms. The local MCP server is MIT and the ldcli CLI is Apache-2.0", "transports": [ "http", "streamable-http", "stdio" ], "remoteUrl": "https://mcp.launchdarkly.com/mcp/launchdarkly", "packages": [ { "registry": "npm", "name": "@launchdarkly/mcp-server" }, { "registry": "npm", "name": "launchdarkly-api" }, { "registry": "pypi", "name": "launchdarkly-api" }, { "registry": "npm", "name": "@launchdarkly/node-server-sdk" }, { "registry": "pypi", "name": "launchdarkly-server-sdk" } ], "auth": "mixed", "authNotes": "Self-serve. The hosted MCP server uses OAuth with PKCE and dynamic client registration, with reader, writer and observability scopes, and acts with the role of the member who approves it. The REST API, the CLI and the local MCP server take an access token in the `Authorization` header. A signed-in member creates the token with a Reader, Writer, Admin or Owner role, and it is shown once. Custom roles and inline policies need a plan with custom roles, and service tokens need Enterprise. SDK keys cannot call the REST API.", "pricing": "freemium", "pricingNotes": "The Developer plan is free with no card and no seat charge, with 5 service connections, 1,000 client-side MAU, 100,000 experimentation MAU and 5,000 AI runs a month. Foundation has a 14-day trial, then bills by usage with no platform fee. Enterprise is custom. API and MCP calls are not billed (https://launchdarkly.com/pricing/, checked 2026-10-08).", "priceSummary": "$10 / mo", "where": "both", "x402": { "level": "no", "evidence": "No x402, MPP or L402 in the API docs, the OpenAPI spec or the pricing page (checked 2026-10-08).", "endpoints": [] }, "toolCount": 141, "popularity": { "githubStars": null, "npmWeekly": 3291956, "pypiWeekly": 2207524, "asOf": "2026-10-08" }, "docsUrl": "https://launchdarkly.com/docs/home/getting-started/mcp", "llmsTxt": "https://launchdarkly.com/docs/llms.txt", "openapi": "https://app.launchdarkly.com/api/v2/openapi.json", "capabilities": [ "analytics.flags", "analytics.experiments", "observability.logs", "observability.errors" ], "tags": [ "official", "hosted", "mcp", "oauth", "openapi", "llms-txt", "free-tier", "no-card", "eu-region", "status-page", "soc2", "cli", "typescript", "python" ], "lastRelease": "2026-10-06", "graded": true, "anchor": { "graded": true, "score": 69.2, "grade": "B", "agentReady": false, "rank": 165, "ranked": true, "rankOf": 722, "categoryRank": 3, "methodology": "0.4", "run": "2026-10-01", "scores": { "ergonomics": 69, "maintenance": 82, "payments": 40, "reliability": 64, "schema": 89, "security": 66, "transparency": 80 }, "pending": [ "performance", "tasks" ], "assessment": { "confidence": "medium", "date": "2026-10-08" }, "negative": 0, "verdict": "LaunchDarkly suits agents that manage feature flags, rollouts and experiments. The hosted MCP server uses OAuth with dynamic client registration and marks its tools read-only or destructive, and the Developer plan is free without a card. The server lists 141 tools, numeric rate limits are unpublished, and the web application was unavailable for over an hour on 10 July 2026.", "bestFor": "An agent that creates and targets feature flags, runs rollouts and experiments, reads experiment results and cleans up stale flags.", "strengths": [ "Public OpenAPI 3.0.3 spec with 401 operations, 399 of them described, with 1,853 examples and 429 documented on 287 operations", "Hosted MCP server with OAuth, PKCE, dynamic client registration, a revocation endpoint and reader, writer and observability scopes", "MCP tools cover experiment creation, iteration control and results, flag targeting, approval requests and flag removal readiness", "Developer plan is free with no card, unlimited seats, unlimited flags and 100,000 experimentation MAU a month", "Dated API versions set by header, with a written policy of 12 months' support after a new version" ], "weaknesses": [ "The hosted MCP server lists 141 tools, and no tool filter for it was found in the reviewed documentation", "The API docs say the numeric rate limits are not published and may change", "132 of 401 API operations are beta, need `LD-API-Version: beta` and may change without notice", "On 10 July 2026 the web application was unavailable and flag delivery failed for part of two hours, and some SDKs needed a restart", "Custom roles, inline token policies, service tokens and approvals need an Enterprise plan, and the hosted MCP server is absent from the EU and federal instances" ], "agentNotes": [ "Connect to https://mcp.launchdarkly.com/mcp/launchdarkly over streamable HTTP with OAuth. On the EU or federal instance run the local `@launchdarkly/mcp-server` with `--server-url`", "Authorise with a Reader role or the `reader` scope unless the task writes. A 403 after consent means the member's role lacks access", "Send `LD-API-Version: 20240415` on every REST call, and `LD-API-Version: beta` for beta resources, which answer 403 without it", "Read `X-Ratelimit-Global-Remaining`, `X-Ratelimit-Route-Remaining` and `X-Ratelimit-Reset` on each response, and wait `Retry-After` seconds on an IP limit", "Send `Content-Type: application/json; domain-model=launchdarkly.semanticpatch` for semantic patches, or the body is read as JSON patch and answers 400" ], "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": 69.2 } ], "editorialScores": { "ergonomics": 69, "maintenance": 82, "payments": 40, "reliability": 64, "schema": 89, "security": 66, "transparency": 74 }, "provenanceScore": 86 }, "connect": { "install": "npx -y --package @launchdarkly/mcp-server -- mcp start --api-key api-xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx", "claudeCode": "claude mcp add --transport http \"launchdarkly\" \"https://mcp.launchdarkly.com/mcp/launchdarkly\"", "config": { "mcpServers": { "launchdarkly": { "type": "http", "url": "https://mcp.launchdarkly.com/mcp/launchdarkly" } } } }, "letme": { "capability": "https://letme.dev/analytics.flags", "tool": "https://letme.dev/launchdarkly" }, "area": "business", "unitPrices": [ { "item": "Foundation, service connection", "unit": "month", "usd": 10, "note": "per connection, billed yearly, first 5 included" }, { "item": "Foundation, client-side MAU", "unit": "user-month", "usd": 0.00833, "note": "$8.33 per 1,000, billed yearly" }, { "item": "Additional AI run", "unit": "tx", "usd": 0.005, "note": "$5 per 1,000 above 5,000 a month" } ], "provenance": { "legalEntity": "Catamorphic, Co. (dba LaunchDarkly)", "domain": "launchdarkly.com", "domainRegistered": "2014-07-15", "endpointOnVendorDomain": true, "terms": "https://launchdarkly.com/policies/subscription-terms/", "privacy": "https://launchdarkly.com/policies/privacy/", "statusPage": "https://status.launchdarkly.com", "changelog": "https://launchdarkly.com/docs/home/changelog", "securityTxt": "none", "checked": "2026-10-08", "notes": [ "The terms of service for Developer and Foundation self-service customers (effective 8 September 2025) name Catamorphic, Co., a Delaware corporation doing business as LaunchDarkly. Enterprise customers have separate terms at https://launchdarkly.com/policies/subscription-terms-enterprise/.", "The privacy policy (effective 8 April 2025) says it does not apply to data LaunchDarkly processes for customers. The data processing addendum at https://launchdarkly.com/policies/data-processing-addendum/ covers that data.", "launchdarkly.com/.well-known/security.txt and app.launchdarkly.com/.well-known/security.txt return 404.", "The MCP server answers on mcp.launchdarkly.com and the API on app.launchdarkly.com. The MCP endpoint's headers name Gram, from Speakeasy, which is on the sub-processor list.", "RDAP for launchdarkly.com gives a registration date of 2014-07-15." ], "score": 86 }, "pageJsonUrl": "https://www.anchorterminal.com/tools/launchdarkly.json", "live": { "slug": "launchdarkly", "probe": { "target": "https://mcp.launchdarkly.com/mcp/launchdarkly", "method": "get", "lastAt": "2026-10-08T19:52:54.107021833Z", "lastOk": true, "lastStatus": 405, "lastMs": 453, "authRequired": false, "uptime24h": 100, "uptime30d": 100, "p50ms24h": 451, "p95ms24h": 505, "samples24h": 27, "samples30d": 27, "days": [ { "date": "2026-10-08", "probes": 27, "ok": 27 } ] }, "vendorStatus": { "page": "https://status.launchdarkly.com", "indicator": "none", "summary": "All Systems Operational", "checkedAt": "2026-10-08T19:50:47.991717422Z" }, "pages": [ { "url": "https://launchdarkly.com/docs/home/changelog", "kind": "changelog", "status": 200, "checkedAt": "2026-10-08T18:21:16.320328672Z", "changedAt": "0001-01-01T00:00:00Z", "fingerprint": "74204a4637a3" }, { "url": "https://launchdarkly.com/pricing/", "kind": "pricing", "status": 200, "checkedAt": "2026-10-08T18:21:22.375066872Z", "changedAt": "0001-01-01T00:00:00Z", "fingerprint": "ba2803698c00" }, { "url": "https://launchdarkly.com/policies/privacy/", "kind": "privacy", "status": 200, "checkedAt": "2026-10-08T18:21:18.596393493Z", "changedAt": "0001-01-01T00:00:00Z", "fingerprint": "07aaa0a5b478" }, { "url": "https://launchdarkly.com/policies/subscription-terms/", "kind": "terms", "status": 200, "checkedAt": "2026-10-08T18:21:20.369550127Z", "changedAt": "0001-01-01T00:00:00Z", "fingerprint": "9ada90ccb172" } ], "updatedAt": "2026-10-08T19:52:54.107021833Z" } }, "facts": [ { "a": "HTTP API", "b": "HTTP API", "name": "Kind" }, { "a": "GrowthBook, Inc.", "b": "Catamorphic, Co. (dba LaunchDarkly)", "name": "Vendor" }, { "a": "https://mcp.growthbook.io/mcp", "b": "https://mcp.launchdarkly.com/mcp/launchdarkly", "name": "Hosted endpoint" }, { "a": "HTTP, Streamable HTTP, stdio", "b": "HTTP, Streamable HTTP, stdio", "name": "Transports" }, { "a": "OAuth or key", "b": "OAuth or key", "name": "Auth" }, { "a": "Freemium", "b": "Freemium", "name": "Pricing" }, { "a": "no", "b": "no", "name": "x402" }, { "a": "MIT for the core and for the MCP server. Three enterprise directories in the main repository are under GrowthBook's enterprise licence. GrowthBook Cloud is a hosted service under the Customer Agreement", "b": "Proprietary service under LaunchDarkly's terms. The local MCP server is MIT and the ldcli CLI is Apache-2.0", "name": "Licence" }, { "a": "4", "b": "141", "name": "Tools exposed" }, { "a": "no", "b": "no", "name": "Read-only variant documented" }, { "a": "yes", "b": "yes", "name": "llms.txt" }, { "a": "io.github.growthbook/growthbook-mcp", "b": "not listed", "name": "MCP registry" }, { "a": "2026-10-06", "b": "2026-10-06", "name": "Last release" }, { "a": "2025-06-19", "b": "2025-09-08", "name": "Terms last updated" }, { "a": "2026-06-08", "b": "2025-04-08", "name": "Privacy policy last updated" }, { "a": "yes", "b": "not found in the text", "name": "Customer content may train models" }, { "a": "not found in the text", "b": "not found in the text", "name": "Terms restrict automated access" }, { "a": "yes", "b": "yes", "name": "Terms restrict benchmarking" }, { "a": "not found in the text", "b": "not found in the text", "name": "Terms or service can change without notice" }, { "a": "not found in the text", "b": "not found in the text", "name": "Arbitration or class-action waiver" }, { "a": "8.5k stars, 1.3M npm/wk, 433k PyPI/wk", "b": "3.3M npm/wk, 2.2M PyPI/wk", "name": "Popularity" } ], "faq": [ { "answer": "GrowthBook and LaunchDarkly score within a point of each other on agent readiness, 70.1 (BB) and 69.2 (B). LaunchDarkly leads on schema \u0026 documentation and transparency \u0026 trust.", "question": "Which is better for AI agents, GrowthBook or LaunchDarkly?" }, { "answer": "Both take an API key or an OAuth sign-in.", "question": "Do GrowthBook and LaunchDarkly need an API key?" }, { "answer": "Yes. GrowthBook has a hosted endpoint at https://mcp.growthbook.io/mcp and LaunchDarkly at https://mcp.launchdarkly.com/mcp/launchdarkly.", "question": "Can an agent call GrowthBook and LaunchDarkly without installing anything?" }, { "answer": "GrowthBook is open source (MIT for the core and for the MCP server. Three enterprise directories in the main repository are under GrowthBook's enterprise licence. GrowthBook Cloud is a hosted service under the Customer Agreement). No open-source release is listed for LaunchDarkly.", "question": "Are GrowthBook and LaunchDarkly open source?" } ], "goodFor": [ { "aheadOn": [ "Reliability, 86 against 64", "Agent ergonomics, 76 against 69", "Maintenance \u0026 community, 89 against 82" ], "also": [ "Agent-ready, a grade of BB or better", "Open source" ], "goodFor": "Teams that want flags and experiments analysed against their own warehouse, with an open-source core and a self-hosted option.", "slug": "growthbook", "watchFor": "The API tools take a path and a JSON string and don't validate payloads, so correct calls depend on the bundled skills" }, { "aheadOn": [ "Schema \u0026 documentation, 89 against 76", "Transparency \u0026 trust, 80 against 74" ], "also": [ "No incidents deducted, where GrowthBook loses 3 points for them" ], "goodFor": "An agent that creates and targets feature flags, runs rollouts and experiments, reads experiment results and cleans up stale flags.", "slug": "launchdarkly", "watchFor": "The hosted MCP server lists 141 tools, and no tool filter for it was found in the reviewed documentation" } ], "job": { "capability": "analytics.experiments", "name": "Analytics experiments" }, "others": [ { "json": "https://www.anchorterminal.com/compare/amplitude-vs-growthbook.json", "title": "Amplitude vs GrowthBook", "url": "https://www.anchorterminal.com/compare/amplitude-vs-growthbook" }, { "json": "https://www.anchorterminal.com/compare/fullstory-vs-growthbook.json", "title": "Fullstory vs GrowthBook", "url": "https://www.anchorterminal.com/compare/fullstory-vs-growthbook" }, { "json": "https://www.anchorterminal.com/compare/growthbook-vs-pendo.json", "title": "GrowthBook vs Pendo", "url": "https://www.anchorterminal.com/compare/growthbook-vs-pendo" }, { "json": "https://www.anchorterminal.com/compare/growthbook-vs-heap.json", "title": "GrowthBook vs Heap", "url": "https://www.anchorterminal.com/compare/growthbook-vs-heap" }, { "json": "https://www.anchorterminal.com/compare/growthbook-vs-mixpanel.json", "title": "GrowthBook vs Mixpanel", "url": "https://www.anchorterminal.com/compare/growthbook-vs-mixpanel" }, { "json": "https://www.anchorterminal.com/compare/growthbook-vs-optimizely.json", "title": "GrowthBook vs Optimizely Experimentation", "url": "https://www.anchorterminal.com/compare/growthbook-vs-optimizely" }, { "json": "https://www.anchorterminal.com/compare/growthbook-vs-posthog.json", "title": "GrowthBook vs PostHog", "url": "https://www.anchorterminal.com/compare/growthbook-vs-posthog" }, { "json": "https://www.anchorterminal.com/compare/growthbook-vs-statsig.json", "title": "GrowthBook vs Statsig", "url": "https://www.anchorterminal.com/compare/growthbook-vs-statsig" }, { "json": "https://www.anchorterminal.com/compare/amplitude-vs-launchdarkly.json", "title": "Amplitude vs LaunchDarkly", "url": "https://www.anchorterminal.com/compare/amplitude-vs-launchdarkly" }, { "json": "https://www.anchorterminal.com/compare/launchdarkly-vs-mixpanel.json", "title": "LaunchDarkly vs Mixpanel", "url": "https://www.anchorterminal.com/compare/launchdarkly-vs-mixpanel" }, { "json": "https://www.anchorterminal.com/compare/launchdarkly-vs-optimizely.json", "title": "LaunchDarkly vs Optimizely Experimentation", "url": "https://www.anchorterminal.com/compare/launchdarkly-vs-optimizely" }, { "json": "https://www.anchorterminal.com/compare/launchdarkly-vs-posthog.json", "title": "LaunchDarkly vs PostHog", "url": "https://www.anchorterminal.com/compare/launchdarkly-vs-posthog" }, { "json": "https://www.anchorterminal.com/compare/launchdarkly-vs-statsig.json", "title": "LaunchDarkly vs Statsig", "url": "https://www.anchorterminal.com/compare/launchdarkly-vs-statsig" } ], "scores": [ { "by": 22, "edge": "growthbook", "growthbook": 86, "key": "reliability", "launchdarkly": 64, "name": "Reliability", "weight": 16 }, { "key": "performance", "name": "Performance", "pending": true, "weight": 10 }, { "by": 13, "edge": "launchdarkly", "growthbook": 76, "key": "schema", "launchdarkly": 89, "name": "Schema \u0026 documentation", "weight": 13 }, { "by": 7, "edge": "growthbook", "growthbook": 76, "key": "ergonomics", "launchdarkly": 69, "name": "Agent ergonomics", "weight": 13 }, { "by": 2, "edge": "growthbook", "growthbook": 68, "key": "security", "launchdarkly": 66, "name": "Security \u0026 auth", "weight": 14 }, { "by": 0, "edge": "", "growthbook": 40, "key": "payments", "launchdarkly": 40, "name": "Payments \u0026 pricing", "weight": 10 }, { "key": "tasks", "name": "Task success", "pending": true, "weight": 10 }, { "by": 7, "edge": "growthbook", "growthbook": 89, "key": "maintenance", "launchdarkly": 82, "name": "Maintenance \u0026 community", "weight": 7 }, { "by": 6, "edge": "launchdarkly", "growthbook": 74, "key": "transparency", "launchdarkly": 80, "name": "Transparency \u0026 trust", "weight": 7 } ], "summary": "GrowthBook and LaunchDarkly score within a point of each other on agent readiness, 70.1 (BB) and 69.2 (B). LaunchDarkly leads on schema \u0026 documentation and transparency \u0026 trust. Both do analytics experiments.", "verdicts": { "growthbook": "GrowthBook Cloud's MCP server has four tools with read and write annotations, OAuth with dynamic client registration, and a 414-operation OpenAPI spec behind it. The free plan needs no card. The API tools pass paths and JSON bodies through without validation, every key is limited to 60 requests a minute, and audit logs are Enterprise only.", "launchdarkly": "LaunchDarkly suits agents that manage feature flags, rollouts and experiments. The hosted MCP server uses OAuth with dynamic client registration and marks its tools read-only or destructive, and the Developer plan is free without a card. The server lists 141 tools, numeric rate limits are unpublished, and the web application was unavailable for over an hour on 10 July 2026." } }, "kind": "anchor.page", "links": { "api": "https://www.anchorterminal.com/api/v1/index.json", "html": "https://www.anchorterminal.com/compare/growthbook-vs-launchdarkly", "json": "https://www.anchorterminal.com/compare/growthbook-vs-launchdarkly.json", "llms": "https://www.anchorterminal.com/llms.txt", "markdown": "https://www.anchorterminal.com/compare/growthbook-vs-launchdarkly.md", "slim": "https://www.anchorterminal.com/compare/growthbook-vs-launchdarkly.min.md" }, "markdown": "GrowthBook and LaunchDarkly score within a point of each other on agent readiness, 70.1 (BB) and 69.2 (B). LaunchDarkly leads on schema \u0026 documentation and transparency \u0026 trust. Both do analytics experiments.\n\n- GrowthBook: grade BB, 70.1/100, rank #142 of 722. Markdown https://www.anchorterminal.com/tools/growthbook.md · JSON https://www.anchorterminal.com/api/v1/tools/growthbook.json\n- LaunchDarkly: grade B, 69.2/100, rank #165 of 722. Markdown https://www.anchorterminal.com/tools/launchdarkly.md · JSON https://www.anchorterminal.com/api/v1/tools/launchdarkly.json\n\n## Which one, for what\n\n### GrowthBook (BB)\n\nGood for: Teams that want flags and experiments analysed against their own warehouse, with an open-source core and a self-hosted option.\n\nAhead on:\n- Reliability, 86 against 64\n- Agent ergonomics, 76 against 69\n- Maintenance \u0026 community, 89 against 82\n\nAlso in its favour:\n- Agent-ready, a grade of BB or better\n- Open source\n\nWatch for: The API tools take a path and a JSON string and don't validate payloads, so correct calls depend on the bundled skills\n\n### LaunchDarkly (B)\n\nGood for: An agent that creates and targets feature flags, runs rollouts and experiments, reads experiment results and cleans up stale flags.\n\nAhead on:\n- Schema \u0026 documentation, 89 against 76\n- Transparency \u0026 trust, 80 against 74\n\nAlso in its favour:\n- No incidents deducted, where GrowthBook loses 3 points for them\n\nWatch for: The hosted MCP server lists 141 tools, and no tool filter for it was found in the reviewed documentation\n\n\n## Score by category\n\n| Category | Weight | GrowthBook | LaunchDarkly | Edge |\n| --- | --- | --- | --- | --- |\n| Reliability | 16% (20 this run) | 86 | 64 | GrowthBook +22 |\n| Performance | 10%, pending | pending | pending | not scored in this run |\n| Schema \u0026 documentation | 13% (16.2 this run) | 76 | 89 | LaunchDarkly +13 |\n| Agent ergonomics | 13% (16.2 this run) | 76 | 69 | GrowthBook +7 |\n| Security \u0026 auth | 14% (17.5 this run) | 68 | 66 | GrowthBook +2 |\n| Payments \u0026 pricing | 10% (12.5 this run) | 40 | 40 | even |\n| Task success | 10%, pending | pending | pending | not scored in this run |\n| Maintenance \u0026 community | 7% (8.8 this run) | 89 | 82 | GrowthBook +7 |\n| Transparency \u0026 trust | 7% (8.8 this run) | 74 | 80 | LaunchDarkly +6 |\n| Negative events | ≤15 | -3 | 0 | |\n| **Total** | | **70.1 · BB** | **69.2 · B** | |\n\n## Facts side by side\n\n| Fact | GrowthBook | LaunchDarkly |\n| --- | --- | --- |\n| Kind | HTTP API | HTTP API |\n| Vendor | GrowthBook, Inc. | Catamorphic, Co. (dba LaunchDarkly) |\n| Hosted endpoint | `https://mcp.growthbook.io/mcp` | `https://mcp.launchdarkly.com/mcp/launchdarkly` |\n| Transports | HTTP, Streamable HTTP, stdio | HTTP, Streamable HTTP, stdio |\n| Auth | OAuth or key | OAuth or key |\n| Pricing | Freemium | Freemium |\n| x402 | no | no |\n| Licence | MIT for the core and for the MCP server. Three enterprise directories in the main repository are under GrowthBook's enterprise licence. GrowthBook Cloud is a hosted service under the Customer Agreement | Proprietary service under LaunchDarkly's terms. The local MCP server is MIT and the ldcli CLI is Apache-2.0 |\n| Tools exposed | 4 | 141 |\n| Read-only variant documented | no | no |\n| llms.txt | yes | yes |\n| MCP registry | `io.github.growthbook/growthbook-mcp` | not listed |\n| Last release | 2026-10-06 | 2026-10-06 |\n| Terms last updated | 2025-06-19 | 2025-09-08 |\n| Privacy policy last updated | 2026-06-08 | 2025-04-08 |\n| Customer content may train models | yes | not found in the text |\n| Terms restrict automated access | not found in the text | not found in the text |\n| Terms restrict benchmarking | yes | yes |\n| Terms or service can change without notice | not found in the text | not found in the text |\n| Arbitration or class-action waiver | not found in the text | not found in the text |\n| Popularity | 8.5k stars, 1.3M npm/wk, 433k PyPI/wk | 3.3M npm/wk, 2.2M PyPI/wk |\n\n## Verdicts\n\n**GrowthBook.** GrowthBook Cloud's MCP server has four tools with read and write annotations, OAuth with dynamic client registration, and a 414-operation OpenAPI spec behind it. The free plan needs no card. The API tools pass paths and JSON bodies through without validation, every key is limited to 60 requests a minute, and audit logs are Enterprise only.\n\n**LaunchDarkly.** LaunchDarkly suits agents that manage feature flags, rollouts and experiments. The hosted MCP server uses OAuth with dynamic client registration and marks its tools read-only or destructive, and the Developer plan is free without a card. The server lists 141 tools, numeric rate limits are unpublished, and the web application was unavailable for over an hour on 10 July 2026.\n\n## Before you call either\n\n### GrowthBook\n\n1. Connect to https://mcp.growthbook.io/mcp and complete OAuth in a browser. Use https://mcp.growthbook.io/mcp/api for the two API tools alone\n2. Call `growthbook_list_skills` and `growthbook_read_skill` before writing. The API tools don't validate payloads, so use the paths the skill names\n3. Stay under 60 requests a minute per key. On 429 wait for the `RateLimit-Reset` seconds before retrying\n4. List calls return 10 items by default. Pass `limit` up to 100 and `offset` to page\n5. A 422 is a soft warning. Resubmit with `?ignoreWarnings=true` only after reading the message\n\n### LaunchDarkly\n\n1. Connect to https://mcp.launchdarkly.com/mcp/launchdarkly over streamable HTTP with OAuth. On the EU or federal instance run the local `@launchdarkly/mcp-server` with `--server-url`\n2. Authorise with a Reader role or the `reader` scope unless the task writes. A 403 after consent means the member's role lacks access\n3. Send `LD-API-Version: 20240415` on every REST call, and `LD-API-Version: beta` for beta resources, which answer 403 without it\n4. Read `X-Ratelimit-Global-Remaining`, `X-Ratelimit-Route-Remaining` and `X-Ratelimit-Reset` on each response, and wait `Retry-After` seconds on an IP limit\n5. Send `Content-Type: application/json; domain-model=launchdarkly.semanticpatch` for semantic patches, or the body is read as JSON patch and answers 400\n\n## Questions\n\n### Which is better for AI agents, GrowthBook or LaunchDarkly?\n\nGrowthBook and LaunchDarkly score within a point of each other on agent readiness, 70.1 (BB) and 69.2 (B). LaunchDarkly leads on schema \u0026 documentation and transparency \u0026 trust.\n\n### Do GrowthBook and LaunchDarkly need an API key?\n\nBoth take an API key or an OAuth sign-in.\n\n### Can an agent call GrowthBook and LaunchDarkly without installing anything?\n\nYes. GrowthBook has a hosted endpoint at https://mcp.growthbook.io/mcp and LaunchDarkly at https://mcp.launchdarkly.com/mcp/launchdarkly.\n\n### Are GrowthBook and LaunchDarkly open source?\n\nGrowthBook is open source (MIT for the core and for the MCP server. Three enterprise directories in the main repository are under GrowthBook's enterprise licence. GrowthBook Cloud is a hosted service under the Customer Agreement). No open-source release is listed for LaunchDarkly.\n\n\n## For agents\n\n- This comparison as JSON: https://www.anchorterminal.com/compare/growthbook-vs-launchdarkly.json, and with the fewest tokens: https://www.anchorterminal.com/compare/growthbook-vs-launchdarkly.min.md\n- Over MCP at https://www.anchorterminal.com/mcp (no key): `compare_tools {\"a\": \"growthbook\", \"b\": \"launchdarkly\"}`. From a terminal: `anchor compare growthbook launchdarkly`\n- Each listing in full: https://www.anchorterminal.com/api/v1/tools/growthbook.json and https://www.anchorterminal.com/api/v1/tools/launchdarkly.json\n\n## Other comparisons with GrowthBook or LaunchDarkly\n\n- [Amplitude vs GrowthBook](https://www.anchorterminal.com/compare/amplitude-vs-growthbook.md)\n- [Fullstory vs GrowthBook](https://www.anchorterminal.com/compare/fullstory-vs-growthbook.md)\n- [GrowthBook vs Pendo](https://www.anchorterminal.com/compare/growthbook-vs-pendo.md)\n- [GrowthBook vs Heap](https://www.anchorterminal.com/compare/growthbook-vs-heap.md)\n- [GrowthBook vs Mixpanel](https://www.anchorterminal.com/compare/growthbook-vs-mixpanel.md)\n- [GrowthBook vs Optimizely Experimentation](https://www.anchorterminal.com/compare/growthbook-vs-optimizely.md)\n- [GrowthBook vs PostHog](https://www.anchorterminal.com/compare/growthbook-vs-posthog.md)\n- [GrowthBook vs Statsig](https://www.anchorterminal.com/compare/growthbook-vs-statsig.md)\n- [Amplitude vs LaunchDarkly](https://www.anchorterminal.com/compare/amplitude-vs-launchdarkly.md)\n- [LaunchDarkly vs Mixpanel](https://www.anchorterminal.com/compare/launchdarkly-vs-mixpanel.md)\n- [LaunchDarkly vs Optimizely Experimentation](https://www.anchorterminal.com/compare/launchdarkly-vs-optimizely.md)\n- [LaunchDarkly vs PostHog](https://www.anchorterminal.com/compare/launchdarkly-vs-posthog.md)\n- [LaunchDarkly vs Statsig](https://www.anchorterminal.com/compare/launchdarkly-vs-statsig.md)\n", "meta": { "attribution": "Anchor Terminal (https://www.anchorterminal.com)", "docs": "https://www.anchorterminal.com/docs/", "generatedAt": "2026-10-08", "license": "CC-BY-4.0", "method": "https://www.anchorterminal.com/benchmark/", "methodology": "0.4", "openapi": "https://www.anchorterminal.com/openapi.json", "preview": false, "run": "2026-10-01", "runLabel": "October 2026 research run" }, "page": { "breadcrumbs": [ { "name": "Home", "url": "https://www.anchorterminal.com/" }, { "name": "Compare", "url": "https://www.anchorterminal.com/compare/" }, { "name": "GrowthBook vs LaunchDarkly", "url": "" } ], "description": "GrowthBook and LaunchDarkly score within a point of each other on agent readiness, 70.1 (BB) and 69.2 (B). LaunchDarkly leads on schema \u0026 documentation and transparency \u0026 trust. Both do analytics experiments. Category scores, facts, verdicts and agent notes side by side.", "facts": [ "GrowthBook BB 70.1", "LaunchDarkly B 69.2", "scores" ], "h1": "GrowthBook vs LaunchDarkly", "image": "https://www.anchorterminal.com/assets/og/compare-growthbook-vs-launchdarkly.png", "path": "/compare/growthbook-vs-launchdarkly", "published": "2026-10-01", "section": "tools", "title": "GrowthBook vs LaunchDarkly for AI agents, BB 70.1 vs B 69.2", "toc": null, "updated": "2026-10-08", "url": "https://www.anchorterminal.com/compare/growthbook-vs-launchdarkly" }, "tokens": { "markdown": 2400, "slim": 680 }, "version": 1 }