{
  "data": {
    "a": {
      "slug": "posthog",
      "name": "PostHog",
      "vendor": "PostHog Inc.",
      "vendorUrl": "https://posthog.com",
      "kind": "http-api",
      "category": "product-analytics",
      "summary": "PostHog is an open-source product analytics platform with session replay, feature flags, experiments, error tracking and a data warehouse. Agents reach PostHog Cloud through a REST API with a public OpenAPI spec and an official hosted MCP server.",
      "url": "https://www.anchorterminal.com/tools/posthog",
      "markdownUrl": "https://www.anchorterminal.com/tools/posthog.md",
      "slimMarkdownUrl": "https://www.anchorterminal.com/tools/posthog.min.md",
      "jsonUrl": "https://www.anchorterminal.com/api/v1/tools/posthog.json",
      "repo": "https://github.com/PostHog/posthog",
      "license": "MIT for the repository outside the `ee` directory, which has its own licence. PostHog Cloud is a hosted service under PostHog's terms",
      "transports": [
        "http",
        "streamable-http"
      ],
      "remoteUrl": "https://us.posthog.com",
      "packages": [
        {
          "registry": "npm",
          "name": "posthog-node"
        },
        {
          "registry": "npm",
          "name": "posthog-js"
        },
        {
          "registry": "pypi",
          "name": "posthog"
        },
        {
          "registry": "npm",
          "name": "@posthog/cli"
        }
      ],
      "auth": "mixed",
      "authNotes": "Self-serve. Private endpoints take a Bearer personal API key (`phx_`) that a signed-in user creates with chosen scopes and project or organisation access, or an OAuth access token. OAuth at oauth.posthog.com supports PKCE, dynamic client registration and client ID metadata documents, with no app review needed to go live. The MCP server uses OAuth by default or a personal API key made with the MCP Server preset. Project secret API keys are in beta. Capture and flag evaluation take the public project token.",
      "pricing": "freemium",
      "pricingNotes": "Free plan with no card, covering 1 million analytics events and 1 million flag requests a month. The paid plan has no base fee and no seat charge, and bills per unit above the free allowance (analytics events from $0.00005). API and MCP calls are not billed, but personal API key queries draw on an hourly read budget that is larger on a paid plan (https://posthog.com/pricing, checked 2026-10-07).",
      "priceSummary": "$0.0001 / tx",
      "where": "hosted",
      "x402": {
        "level": "no",
        "evidence": "No x402, MPP or L402 in the API docs, the OpenAPI spec or the pricing page (checked 2026-10-07).",
        "endpoints": []
      },
      "toolCount": 1096,
      "popularity": {
        "githubStars": 40176,
        "npmWeekly": 15243417,
        "pypiWeekly": null,
        "asOf": "2026-10-07"
      },
      "docsUrl": "https://posthog.com/docs/api",
      "llmsTxt": "https://posthog.com/llms.txt",
      "openapi": "https://app.posthog.com/api/schema/",
      "registryName": "io.github.PostHog/mcp",
      "capabilities": [
        "analytics.query",
        "analytics.events",
        "analytics.funnels",
        "analytics.experiments",
        "analytics.flags",
        "observability.errors",
        "observability.logs"
      ],
      "tags": [
        "official",
        "hosted",
        "open-source",
        "mcp",
        "oauth",
        "openapi",
        "llms-txt",
        "free-tier",
        "no-card",
        "eu-region",
        "status-page",
        "soc2",
        "typescript",
        "python"
      ],
      "lastRelease": "2026-10-05",
      "graded": true,
      "anchor": {
        "graded": true,
        "score": 68.4,
        "grade": "B",
        "agentReady": false,
        "rank": 181,
        "ranked": true,
        "rankOf": 722,
        "categoryRank": 4,
        "methodology": "0.4",
        "run": "2026-10-01",
        "scores": {
          "ergonomics": 78,
          "maintenance": 89,
          "payments": 40,
          "reliability": 74,
          "schema": 81,
          "security": 84,
          "transparency": 83
        },
        "pending": [
          "performance",
          "tasks"
        ],
        "assessment": {
          "confidence": "medium",
          "date": "2026-10-07"
        },
        "negative": -7,
        "negativeNotes": [
          "-3: 2025-11-24. Malicious versions of posthog-node, posthog-js and six other npm packages were published with a stolen token after an attacker took CI secrets through a pull request workflow. PostHog removed them in about five hours and published a post-mortem on 26 November 2025, so the deduction is reduced (https://posthog.com/blog/nov-24-shai-hulud-attack-post-mortem).",
          "-2: 2026-05-29, disclosed 2026-06-02 as PSA-2026-00001 (critical). Researchers used an unsandboxed, outdated Chromium to reach a US Cloud pod and read internal production credentials. PostHog says no customer data was accessed and the credentials were rotated. Fixed and documented (https://posthog.com/handbook/company/security-advisories).",
          "-2: 2026-07-11 to 2026-08-04, disclosed 2026-08-21 as PSA-2026-00002 (high). Customer-run nginx proxies set up as PostHog's guide showed sent traffic to released AWS addresses, and a researcher read traffic from six EU customers. The report sat in triage for five weeks. Fixed and documented (https://posthog.com/handbook/company/security-advisories)."
        ],
        "verdict": "PostHog suits agents that need to query product data and manage flags or experiments. Its hosted MCP server has OAuth scopes, a read-only mode and a one-tool CLI mode over 1,096 tools. The status page shows 31 incidents in 90 days, four on analytics queries, and three security incidents were disclosed in the last year.",
        "bestFor": "An agent that answers product questions in SQL or with funnel, retention and trends queries, and that manages feature flags, experiments and error tracking in the same project.",
        "strengths": [
          "Public OpenAPI 3.1 spec with 2,347 operations and a scope on most of them, plus llms.txt and a Markdown copy of every docs page",
          "Hosted MCP server with OAuth, a read-only switch, filters by product area or tool name and pinning to one project",
          "CLI mode registers one `exec` tool that searches, inspects and calls the 1,096 tools on demand",
          "Free plan without a card, with 1 million analytics events and 1 million flag requests a month, and public per-unit prices above that",
          "MIT source outside the `ee` directory, a public SOC 2 Type 2 report and a public security advisories page"
        ],
        "weaknesses": [
          "31 incidents on the status page between 9 July and 6 October 2026, four of them analytics query timeouts or failures",
          "Three security incidents in twelve months, among them malicious npm SDK versions on 24 November 2025",
          "API queries stop at 10 seconds of execution, three at a time per project, with an hourly read budget on personal API keys",
          "No API versioning or deprecation policy was found, and the query docs reserve the right to restrict export-like queries without notice",
          "Customer content can be used to train PostHog's own models unless the customer opts out in settings"
        ],
        "agentNotes": [
          "Add `?readonly=true` or the `x-posthog-read-only` header to the MCP URL unless the task needs writes",
          "Pin the session with `x-posthog-project-id`, which also removes the `switch-project` and `switch-organization` tools",
          "In CLI mode run `info \u003ctool\u003e` once before `call`, and send one `exec` command per request",
          "On a 429 with code `api_queries_budget_exceeded`, wait for `Retry-After` and read `X-PostHog-Query-Budget-Remaining-Bytes`",
          "Page SQL results by keyset on `timestamp`. `OFFSET` returns 400 for personal API keys, and results cap at 50,000 rows"
        ],
        "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": 68.4
          }
        ],
        "editorialScores": {
          "ergonomics": 78,
          "maintenance": 89,
          "payments": 40,
          "reliability": 74,
          "schema": 81,
          "security": 84,
          "transparency": 71
        },
        "provenanceScore": 94
      },
      "connect": {
        "install": "npx @posthog/wizard mcp add",
        "http": "curl \\\n  -H 'Content-Type: application/json' \\\n  -H \"Authorization: Bearer $POSTHOG_PERSONAL_API_KEY\" \\\n  https://us.posthog.com/api/projects/:project_id/query/ \\\n  -d '{\"query\": {\"kind\": \"HogQLQuery\", \"query\": \"select event, count() from events group by event limit 100\"}}'",
        "claudeCode": "claude mcp add --transport http posthog https://mcp.posthog.com/mcp -s user",
        "config": {
          "mcpServers": {
            "posthog": {
              "url": "https://mcp.posthog.com/mcp"
            }
          }
        }
      },
      "letme": {
        "capability": "https://letme.dev/analytics.query",
        "tool": "https://letme.dev/posthog"
      },
      "area": "business",
      "unitPrices": [
        {
          "item": "Product analytics event",
          "unit": "tx",
          "usd": 0.00005,
          "note": "1 to 2 million a month, first 1 million free, lower above"
        },
        {
          "item": "Feature flag request",
          "unit": "tx",
          "usd": 0.0001,
          "note": "1 to 2 million a month, first 1 million free, lower above"
        },
        {
          "item": "Session recording",
          "unit": "tx",
          "usd": 0.005,
          "note": "5,001 to 15,000 a month, first 5,000 free"
        },
        {
          "item": "Data warehouse row",
          "unit": "record",
          "usd": 0.000015,
          "note": "1 to 10 million a month, first 1 million free"
        },
        {
          "item": "Boost package",
          "unit": "month",
          "usd": 250
        },
        {
          "item": "Scale package",
          "unit": "month",
          "usd": 750
        },
        {
          "item": "Enterprise package",
          "unit": "month",
          "usd": 2000
        }
      ],
      "provenance": {
        "legalEntity": "PostHog Inc. (formerly Hiberly Inc.)",
        "domain": "posthog.com",
        "domainRegistered": "2020-01-23",
        "endpointOnVendorDomain": true,
        "terms": "https://posthog.com/terms",
        "privacy": "https://posthog.com/privacy",
        "statusPage": "https://www.posthogstatus.com",
        "changelog": "https://posthog.com/changelog",
        "securityTxt": "valid",
        "checked": "2026-10-07",
        "notes": [
          "The privacy policy names PostHog Inc., formerly known as Hiberly Inc., and its subsidiaries. The security handbook names Hiberly Ltd. as the UK entity.",
          "posthog.com/.well-known/security.txt expires 2027-08-30 and points to the security handbook. The copy on us.posthog.com expired 2024-03-14.",
          "status.posthog.com redirects to www.posthogstatus.com.",
          "RDAP for posthog.com gives a registration date of 2020-01-23.",
          "The API, OAuth server and MCP server answer on posthog.com subdomains."
        ],
        "score": 94
      },
      "pageJsonUrl": "https://www.anchorterminal.com/tools/posthog.json",
      "live": {
        "slug": "posthog",
        "probe": {
          "target": "https://us.posthog.com",
          "method": "get",
          "lastAt": "2026-10-08T23:09:16.0462221Z",
          "lastOk": true,
          "lastStatus": 200,
          "lastMs": 373,
          "authRequired": false,
          "uptime24h": 100,
          "uptime30d": 100,
          "p50ms24h": 361,
          "p95ms24h": 447,
          "samples24h": 84,
          "samples30d": 84,
          "days": [
            {
              "date": "2026-10-08",
              "probes": 84,
              "ok": 84
            }
          ]
        },
        "vendorStatus": {
          "page": "https://www.posthogstatus.com",
          "indicator": "unknown",
          "summary": "no machine-readable status found",
          "checkedAt": "2026-10-08T19:39:04.368348073Z"
        },
        "versions": [
          {
            "registry": "github",
            "name": "PostHog/posthog",
            "version": "posthog-cli/v0.18.10",
            "released": "2026-10-08",
            "seenAt": "2026-10-08T16:26:05.264718319Z"
          },
          {
            "registry": "npm",
            "name": "@posthog/cli",
            "version": "0.18.10",
            "seenAt": "2026-10-08T16:26:03.360315129Z"
          },
          {
            "registry": "npm",
            "name": "posthog-js",
            "version": "1.438.2",
            "seenAt": "2026-10-08T16:26:01.219902492Z"
          },
          {
            "registry": "npm",
            "name": "posthog-node",
            "version": "5.55.0",
            "seenAt": "2026-10-08T16:26:00.932213759Z"
          },
          {
            "registry": "pypi",
            "name": "posthog",
            "version": "7.66.0",
            "released": "2026-10-08",
            "seenAt": "2026-10-08T16:26:03.179505005Z"
          }
        ],
        "githubStars": 40189,
        "npmWeekly": 15243417,
        "pypiWeekly": 10625439,
        "securityTxt": {
          "url": "https://posthog.com/.well-known/security.txt",
          "state": "valid",
          "expires": "2027-08-30T00:00:00.000Z",
          "checkedAt": "2026-10-08T15:38:33.305841715Z"
        },
        "pages": [
          {
            "url": "https://posthog.com/changelog",
            "kind": "changelog",
            "status": 200,
            "checkedAt": "2026-10-08T18:23:13.700564471Z",
            "changedAt": "0001-01-01T00:00:00Z",
            "fingerprint": "ede31863795a"
          },
          {
            "url": "https://posthog.com/pricing",
            "kind": "pricing",
            "status": 200,
            "checkedAt": "2026-10-08T18:23:16.013448729Z",
            "changedAt": "0001-01-01T00:00:00Z",
            "fingerprint": "2cc031ef02b6"
          },
          {
            "url": "https://posthog.com/privacy",
            "kind": "privacy",
            "status": 200,
            "checkedAt": "2026-10-08T18:23:17.807151985Z",
            "changedAt": "0001-01-01T00:00:00Z",
            "fingerprint": "4cbb2a93a904"
          },
          {
            "url": "https://posthog.com/terms",
            "kind": "terms",
            "status": 200,
            "checkedAt": "2026-10-08T18:23:20.222126648Z",
            "changedAt": "0001-01-01T00:00:00Z",
            "fingerprint": "8b42f8ddf893"
          }
        ],
        "updatedAt": "2026-10-08T23:09:16.0462221Z"
      }
    },
    "answer": "Statsig scores 72.3 (BB) on agent readiness against PostHog's 68.4 (B), and leads in 2 of 7 scored categories. PostHog leads on agent ergonomics, security \u0026 auth, maintenance \u0026 community and transparency \u0026 trust.",
    "b": {
      "slug": "statsig",
      "name": "Statsig",
      "vendor": "Amplitude, Inc.",
      "vendorUrl": "https://www.statsig.com",
      "kind": "http-api",
      "category": "product-analytics",
      "summary": "Statsig is a hosted platform for feature flags, experiments and product analytics, run by Amplitude, Inc. since May 2026. Agents reach it through the Console API, which has a public OpenAPI spec, and an official hosted MCP server.",
      "url": "https://www.anchorterminal.com/tools/statsig",
      "markdownUrl": "https://www.anchorterminal.com/tools/statsig.md",
      "slimMarkdownUrl": "https://www.anchorterminal.com/tools/statsig.min.md",
      "jsonUrl": "https://www.anchorterminal.com/api/v1/tools/statsig.json",
      "repo": "https://github.com/statsig-io/statsig-server-core",
      "license": "Proprietary hosted service under Statsig's self-service or enterprise terms. The SDKs and the agent skills repository on GitHub are ISC",
      "transports": [
        "http",
        "streamable-http"
      ],
      "remoteUrl": "https://api.statsig.com/v3/mcp",
      "packages": [
        {
          "registry": "npm",
          "name": "@statsig/statsig-node-core"
        },
        {
          "registry": "npm",
          "name": "@statsig/js-client"
        },
        {
          "registry": "pypi",
          "name": "statsig-python-core"
        },
        {
          "registry": "npm",
          "name": "@statsig/siggy"
        }
      ],
      "auth": "mixed",
      "authNotes": "Self-serve. The Console API takes a Console API key in the `STATSIG-API-KEY` header, created in project settings as read-only or read and write. The MCP server uses OAuth with PKCE and dynamic client registration, which issues a personal Console API key carrying the user's role, or takes a Console key in the `statsig-api-key` header. OAuth needs the organisation owner to allow personal keys for the role. Flag evaluation and event logging take a client or server SDK key.",
      "pricing": "freemium",
      "pricingNotes": "Free Developer plan with no card, covering 2 million events and 50,000 session replays a month. Pro is $150 a month with 5 million events, then $0.05 per 1,000 events. Enterprise is by contract. Flag and config checks are unlimited on every plan, and API and MCP calls are not billed. An agent can start on the free plan without a contract (https://www.statsig.com/pricing, checked 2026-10-08).",
      "priceSummary": "$150 / mo",
      "where": "hosted",
      "x402": {
        "level": "no",
        "evidence": "No x402, MPP or L402 in the docs corpus, the OpenAPI spec or the pricing page (checked 2026-10-08).",
        "endpoints": []
      },
      "toolCount": 18,
      "popularity": {
        "githubStars": null,
        "npmWeekly": 4157066,
        "pypiWeekly": 893619,
        "asOf": "2026-10-08"
      },
      "docsUrl": "https://docs.statsig.com/console-api/introduction",
      "llmsTxt": "https://docs.statsig.com/llms.txt",
      "openapi": "https://api.statsig.com/openapi/20240601.json",
      "registryName": "com.statsig/statsig-mcp-server",
      "capabilities": [
        "analytics.experiments",
        "analytics.flags",
        "analytics.query",
        "analytics.events"
      ],
      "tags": [
        "official",
        "hosted",
        "mcp",
        "oauth",
        "openapi",
        "llms-txt",
        "free-tier",
        "no-card",
        "status-page",
        "soc2",
        "eu-region"
      ],
      "lastRelease": "2026-09-28",
      "graded": true,
      "anchor": {
        "graded": true,
        "score": 72.3,
        "grade": "BB",
        "agentReady": true,
        "rank": 94,
        "ranked": true,
        "rankOf": 722,
        "categoryRank": 1,
        "methodology": "0.4",
        "run": "2026-10-01",
        "scores": {
          "ergonomics": 71,
          "maintenance": 81,
          "payments": 40,
          "reliability": 79,
          "schema": 82,
          "security": 74,
          "transparency": 75
        },
        "pending": [
          "performance",
          "tasks"
        ],
        "assessment": {
          "confidence": "medium",
          "date": "2026-10-08"
        },
        "negative": 0,
        "verdict": "Statsig suits agents that manage feature gates and experiments and read their results. Its MCP server has 18 default tools, OAuth, read-only access by project and role, and a confirmation on updates. Errors carry only a status and a message, no idempotency keys were found, and the privacy notice is Amplitude's and doesn't name Statsig.",
        "bestFor": "An agent that creates, updates and cleans up feature gates, dynamic configs and experiments, and reads experiment results and audit history.",
        "strengths": [
          "Hosted MCP server with 18 default tools and a discovery layer that replaced 93 tools on the V1 server",
          "MCP access set per project and per role as no access, read only or read and write, with a confirmation on updates",
          "Public OpenAPI 3.0 spec with 325 operations, plus llms.txt and a Markdown copy of every docs page",
          "Free Developer plan with no card and 2 million events a month, and a public overage price of $0.05 per 1,000 events on Pro",
          "Audit logs kept indefinitely and readable through the API and the `log_read` MCP tool"
        ],
        "weaknesses": [
          "Console API errors carry only `status` and `message`, and the spec documents no 429 response",
          "No idempotency keys were found, and most MCP update tools replace the whole resource",
          "The project Console API key reads and writes everything in a project unless created read-only",
          "The privacy notice is Amplitude's, last updated 31 August 2026, and doesn't name Statsig",
          "The 99.95 per cent SLA needs Enterprise premium support and covers the Console user interface"
        ],
        "agentNotes": [
          "Connect to https://api.statsig.com/v3/mcp. The official MCP registry entry still lists the V1 URL, which has 93 tools",
          "Call `get_context` first to learn the project, your permissions and the review settings",
          "Read the resource before `gate_update`, `experiment_update` or `dynamic_config_update`. They replace the whole resource, so resend every field you want kept",
          "Use `discover_tools` for partial edits, and fetch a fresh `operationHandle` when one expires",
          "On a 429 slow down and back off with jitter. Rejected attempts count towards the quota of about 1,800 mutations per 15 minutes"
        ],
        "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": 72.3
          }
        ],
        "editorialScores": {
          "ergonomics": 71,
          "maintenance": 81,
          "payments": 40,
          "reliability": 79,
          "schema": 82,
          "security": 74,
          "transparency": 64
        },
        "provenanceScore": 85
      },
      "connect": {
        "claudeCode": "claude mcp add --transport http statsig https://api.statsig.com/v3/mcp",
        "config": {
          "mcpServers": {
            "statsig": {
              "url": "https://api.statsig.com/v3/mcp"
            }
          }
        }
      },
      "letme": {
        "capability": "https://letme.dev/analytics.experiments",
        "tool": "https://letme.dev/statsig"
      },
      "area": "business",
      "unitPrices": [
        {
          "item": "Pro plan",
          "unit": "month",
          "usd": 150,
          "note": "5 million events and 100,000 session replays included"
        },
        {
          "item": "Metered event",
          "unit": "tx",
          "usd": 0.00005,
          "note": "Pro plan, above 5 million a month"
        }
      ],
      "provenance": {
        "legalEntity": "Amplitude, Inc.",
        "domain": "statsig.com",
        "domainRegistered": "1998-12-29",
        "endpointOnVendorDomain": true,
        "terms": "https://www.statsig.com/terms",
        "privacy": "https://amplitude.com/privacy",
        "statusPage": "https://status.statsig.com",
        "changelog": "https://www.statsig.com/updates",
        "securityTxt": "none",
        "checked": "2026-10-08",
        "notes": [
          "The self-service subscription agreement at statsig.com/terms, effective 4 August 2025, names Amplitude, Inc. as the party called Statsig. The enterprise terms (effective 18 February 2026) and the DPA do the same.",
          "statsig.com/privacy redirects to amplitude.com/privacy, a notice last updated 31 August 2026 that covers Amplitude, Inc. and its affiliates and doesn't name Statsig. It says it does not apply to end-user data that customers send to the product.",
          "statsig.com/legal/subprocessors redirects to amplitude.com/subprocessor-list, last updated 13 May 2026, which marks the providers used for Statsig-branded services.",
          "The MCP server answers at api.statsig.com. The Console API answers at statsigapi.net, a second domain the vendor's docs name.",
          "www.statsig.com/.well-known/security.txt returns 404.",
          "RDAP for statsig.com gives a registration date of 1998-12-29."
        ],
        "score": 85
      },
      "pageJsonUrl": "https://www.anchorterminal.com/tools/statsig.json",
      "live": {
        "slug": "statsig",
        "probe": {
          "target": "https://api.statsig.com/v3/mcp",
          "method": "get",
          "lastAt": "2026-10-08T23:09:19.62598885Z",
          "lastOk": true,
          "lastStatus": 401,
          "lastMs": 41,
          "lastNote": "asks for credentials",
          "authRequired": true,
          "uptime24h": 100,
          "uptime30d": 100,
          "p50ms24h": 42,
          "p95ms24h": 74,
          "samples24h": 61,
          "samples30d": 61,
          "days": [
            {
              "date": "2026-10-08",
              "probes": 61,
              "ok": 61
            }
          ]
        },
        "vendorStatus": {
          "page": "https://status.statsig.com",
          "indicator": "none",
          "summary": "All Systems Operational",
          "checkedAt": "2026-10-08T23:13:46.94119385Z"
        },
        "pages": [
          {
            "url": "https://www.statsig.com/updates",
            "kind": "changelog",
            "status": 200,
            "checkedAt": "2026-10-08T18:30:46.247718302Z",
            "changedAt": "0001-01-01T00:00:00Z",
            "fingerprint": "3bba7a8e7236"
          },
          {
            "url": "https://www.statsig.com/pricing",
            "kind": "pricing",
            "status": 200,
            "checkedAt": "2026-10-08T18:30:41.954344318Z",
            "changedAt": "0001-01-01T00:00:00Z",
            "fingerprint": "d0e8593f7c0e"
          },
          {
            "url": "https://www.statsig.com/terms",
            "kind": "terms",
            "status": 200,
            "checkedAt": "2026-10-08T18:30:44.722171717Z",
            "changedAt": "0001-01-01T00:00:00Z",
            "fingerprint": "dc465dc5a41d"
          }
        ],
        "updatedAt": "2026-10-08T23:13:46.94119385Z"
      }
    },
    "facts": [
      {
        "a": "HTTP API",
        "b": "HTTP API",
        "name": "Kind"
      },
      {
        "a": "PostHog Inc.",
        "b": "Amplitude, Inc.",
        "name": "Vendor"
      },
      {
        "a": "https://us.posthog.com",
        "b": "https://api.statsig.com/v3/mcp",
        "name": "Hosted endpoint"
      },
      {
        "a": "HTTP, Streamable HTTP",
        "b": "HTTP, Streamable HTTP",
        "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 repository outside the `ee` directory, which has its own licence. PostHog Cloud is a hosted service under PostHog's terms",
        "b": "Proprietary hosted service under Statsig's self-service or enterprise terms. The SDKs and the agent skills repository on GitHub are ISC",
        "name": "Licence"
      },
      {
        "a": "1096",
        "b": "18",
        "name": "Tools exposed"
      },
      {
        "a": "yes",
        "b": "no",
        "name": "Read-only variant documented"
      },
      {
        "a": "yes",
        "b": "yes",
        "name": "llms.txt"
      },
      {
        "a": "io.github.PostHog/mcp",
        "b": "com.statsig/statsig-mcp-server",
        "name": "MCP registry"
      },
      {
        "a": "2026-10-05",
        "b": "2026-09-28",
        "name": "Last release"
      },
      {
        "a": "2026-06-29",
        "b": "2025-08-04",
        "name": "Terms last updated"
      },
      {
        "a": "2026-06-29",
        "b": "2026-08-31",
        "name": "Privacy policy last updated"
      },
      {
        "a": "yes, with an opt-out",
        "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": "yes",
        "name": "Terms or service can change without notice"
      },
      {
        "a": "not found in the text",
        "b": "yes",
        "name": "Arbitration or class-action waiver"
      },
      {
        "a": "40k stars, 15.2M npm/wk",
        "b": "4.2M npm/wk, 894k PyPI/wk",
        "name": "Popularity"
      }
    ],
    "faq": [
      {
        "answer": "Statsig scores 72.3 (BB) on agent readiness against PostHog's 68.4 (B), and leads in 2 of 7 scored categories. PostHog leads on agent ergonomics, security \u0026 auth, maintenance \u0026 community and transparency \u0026 trust.",
        "question": "Which is better for AI agents, PostHog or Statsig?"
      },
      {
        "answer": "Both take an API key or an OAuth sign-in.",
        "question": "Do PostHog and Statsig need an API key?"
      },
      {
        "answer": "Yes. PostHog has a hosted endpoint at https://us.posthog.com and Statsig at https://api.statsig.com/v3/mcp.",
        "question": "Can an agent call PostHog and Statsig without installing anything?"
      },
      {
        "answer": "PostHog is open source (MIT for the repository outside the `ee` directory, which has its own licence. PostHog Cloud is a hosted service under PostHog's terms). No open-source release is listed for Statsig.",
        "question": "Are PostHog and Statsig open source?"
      }
    ],
    "goodFor": [
      {
        "aheadOn": [
          "Agent ergonomics, 78 against 71",
          "Security \u0026 auth, 84 against 74",
          "Maintenance \u0026 community, 89 against 81",
          "Transparency \u0026 trust, 83 against 75"
        ],
        "also": [
          "Open source"
        ],
        "goodFor": "An agent that answers product questions in SQL or with funnel, retention and trends queries, and that manages feature flags, experiments and error tracking in the same project.",
        "slug": "posthog",
        "watchFor": "31 incidents on the status page between 9 July and 6 October 2026, four of them analytics query timeouts or failures"
      },
      {
        "aheadOn": [
          "Reliability, 79 against 74"
        ],
        "also": [
          "Agent-ready, a grade of BB or better",
          "No incidents deducted, where PostHog loses 7 points for them"
        ],
        "goodFor": "An agent that creates, updates and cleans up feature gates, dynamic configs and experiments, and reads experiment results and audit history.",
        "slug": "statsig",
        "watchFor": "Console API errors carry only `status` and `message`, and the spec documents no 429 response"
      }
    ],
    "job": {
      "capability": "analytics.query",
      "name": "Analytics query"
    },
    "others": [
      {
        "json": "https://www.anchorterminal.com/compare/amplitude-vs-posthog.json",
        "title": "Amplitude vs PostHog",
        "url": "https://www.anchorterminal.com/compare/amplitude-vs-posthog"
      },
      {
        "json": "https://www.anchorterminal.com/compare/amplitude-vs-statsig.json",
        "title": "Amplitude vs Statsig",
        "url": "https://www.anchorterminal.com/compare/amplitude-vs-statsig"
      },
      {
        "json": "https://www.anchorterminal.com/compare/fullstory-vs-posthog.json",
        "title": "Fullstory vs PostHog",
        "url": "https://www.anchorterminal.com/compare/fullstory-vs-posthog"
      },
      {
        "json": "https://www.anchorterminal.com/compare/fullstory-vs-statsig.json",
        "title": "Fullstory vs Statsig",
        "url": "https://www.anchorterminal.com/compare/fullstory-vs-statsig"
      },
      {
        "json": "https://www.anchorterminal.com/compare/mixpanel-vs-posthog.json",
        "title": "Mixpanel vs PostHog",
        "url": "https://www.anchorterminal.com/compare/mixpanel-vs-posthog"
      },
      {
        "json": "https://www.anchorterminal.com/compare/mixpanel-vs-statsig.json",
        "title": "Mixpanel vs Statsig",
        "url": "https://www.anchorterminal.com/compare/mixpanel-vs-statsig"
      },
      {
        "json": "https://www.anchorterminal.com/compare/pendo-vs-posthog.json",
        "title": "Pendo vs PostHog",
        "url": "https://www.anchorterminal.com/compare/pendo-vs-posthog"
      },
      {
        "json": "https://www.anchorterminal.com/compare/pendo-vs-statsig.json",
        "title": "Pendo vs Statsig",
        "url": "https://www.anchorterminal.com/compare/pendo-vs-statsig"
      },
      {
        "json": "https://www.anchorterminal.com/compare/heap-vs-posthog.json",
        "title": "Heap vs PostHog",
        "url": "https://www.anchorterminal.com/compare/heap-vs-posthog"
      },
      {
        "json": "https://www.anchorterminal.com/compare/heap-vs-statsig.json",
        "title": "Heap vs Statsig",
        "url": "https://www.anchorterminal.com/compare/heap-vs-statsig"
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        "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/optimizely-vs-posthog.json",
        "title": "Optimizely Experimentation vs PostHog",
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      },
      {
        "json": "https://www.anchorterminal.com/compare/optimizely-vs-statsig.json",
        "title": "Optimizely Experimentation vs Statsig",
        "url": "https://www.anchorterminal.com/compare/optimizely-vs-statsig"
      },
      {
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      },
      {
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        "title": "LaunchDarkly vs Statsig",
        "url": "https://www.anchorterminal.com/compare/launchdarkly-vs-statsig"
      }
    ],
    "scores": [
      {
        "by": 5,
        "edge": "statsig",
        "key": "reliability",
        "name": "Reliability",
        "posthog": 74,
        "statsig": 79,
        "weight": 16
      },
      {
        "key": "performance",
        "name": "Performance",
        "pending": true,
        "weight": 10
      },
      {
        "by": 1,
        "edge": "statsig",
        "key": "schema",
        "name": "Schema \u0026 documentation",
        "posthog": 81,
        "statsig": 82,
        "weight": 13
      },
      {
        "by": 7,
        "edge": "posthog",
        "key": "ergonomics",
        "name": "Agent ergonomics",
        "posthog": 78,
        "statsig": 71,
        "weight": 13
      },
      {
        "by": 10,
        "edge": "posthog",
        "key": "security",
        "name": "Security \u0026 auth",
        "posthog": 84,
        "statsig": 74,
        "weight": 14
      },
      {
        "by": 0,
        "edge": "",
        "key": "payments",
        "name": "Payments \u0026 pricing",
        "posthog": 40,
        "statsig": 40,
        "weight": 10
      },
      {
        "key": "tasks",
        "name": "Task success",
        "pending": true,
        "weight": 10
      },
      {
        "by": 8,
        "edge": "posthog",
        "key": "maintenance",
        "name": "Maintenance \u0026 community",
        "posthog": 89,
        "statsig": 81,
        "weight": 7
      },
      {
        "by": 8,
        "edge": "posthog",
        "key": "transparency",
        "name": "Transparency \u0026 trust",
        "posthog": 83,
        "statsig": 75,
        "weight": 7
      }
    ],
    "summary": "Statsig scores 72.3 (BB) on agent readiness against PostHog's 68.4 (B), and leads in 2 of 7 scored categories. PostHog leads on agent ergonomics, security \u0026 auth, maintenance \u0026 community and transparency \u0026 trust. Both do analytics query.",
    "verdicts": {
      "posthog": "PostHog suits agents that need to query product data and manage flags or experiments. Its hosted MCP server has OAuth scopes, a read-only mode and a one-tool CLI mode over 1,096 tools. The status page shows 31 incidents in 90 days, four on analytics queries, and three security incidents were disclosed in the last year.",
      "statsig": "Statsig suits agents that manage feature gates and experiments and read their results. Its MCP server has 18 default tools, OAuth, read-only access by project and role, and a confirmation on updates. Errors carry only a status and a message, no idempotency keys were found, and the privacy notice is Amplitude's and doesn't name Statsig."
    }
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  "markdown": "Statsig scores 72.3 (BB) on agent readiness against PostHog's 68.4 (B), and leads in 2 of 7 scored categories. PostHog leads on agent ergonomics, security \u0026 auth, maintenance \u0026 community and transparency \u0026 trust. Both do analytics query.\n\n- PostHog: grade B, 68.4/100, rank #181 of 722. Markdown https://www.anchorterminal.com/tools/posthog.md · JSON https://www.anchorterminal.com/api/v1/tools/posthog.json\n- Statsig: grade BB, 72.3/100, rank #94 of 722. Markdown https://www.anchorterminal.com/tools/statsig.md · JSON https://www.anchorterminal.com/api/v1/tools/statsig.json\n\n## Which one, for what\n\n### PostHog (B)\n\nGood for: An agent that answers product questions in SQL or with funnel, retention and trends queries, and that manages feature flags, experiments and error tracking in the same project.\n\nAhead on:\n- Agent ergonomics, 78 against 71\n- Security \u0026 auth, 84 against 74\n- Maintenance \u0026 community, 89 against 81\n- Transparency \u0026 trust, 83 against 75\n\nAlso in its favour:\n- Open source\n\nWatch for: 31 incidents on the status page between 9 July and 6 October 2026, four of them analytics query timeouts or failures\n\n### Statsig (BB)\n\nGood for: An agent that creates, updates and cleans up feature gates, dynamic configs and experiments, and reads experiment results and audit history.\n\nAhead on:\n- Reliability, 79 against 74\n\nAlso in its favour:\n- Agent-ready, a grade of BB or better\n- No incidents deducted, where PostHog loses 7 points for them\n\nWatch for: Console API errors carry only `status` and `message`, and the spec documents no 429 response\n\n\n## Score by category\n\n| Category | Weight | PostHog | Statsig | Edge |\n| --- | --- | --- | --- | --- |\n| Reliability | 16% (20 this run) | 74 | 79 | Statsig +5 |\n| Performance | 10%, pending | pending | pending | not scored in this run |\n| Schema \u0026 documentation | 13% (16.2 this run) | 81 | 82 | Statsig +1 |\n| Agent ergonomics | 13% (16.2 this run) | 78 | 71 | PostHog +7 |\n| Security \u0026 auth | 14% (17.5 this run) | 84 | 74 | PostHog +10 |\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 | 81 | PostHog +8 |\n| Transparency \u0026 trust | 7% (8.8 this run) | 83 | 75 | PostHog +8 |\n| Negative events | ≤15 | -7 | 0 | |\n| **Total** | | **68.4 · B** | **72.3 · BB** | |\n\n## Facts side by side\n\n| Fact | PostHog | Statsig |\n| --- | --- | --- |\n| Kind | HTTP API | HTTP API |\n| Vendor | PostHog Inc. | Amplitude, Inc. |\n| Hosted endpoint | `https://us.posthog.com` | `https://api.statsig.com/v3/mcp` |\n| Transports | HTTP, Streamable HTTP | HTTP, Streamable HTTP |\n| Auth | OAuth or key | OAuth or key |\n| Pricing | Freemium | Freemium |\n| x402 | no | no |\n| Licence | MIT for the repository outside the `ee` directory, which has its own licence. PostHog Cloud is a hosted service under PostHog's terms | Proprietary hosted service under Statsig's self-service or enterprise terms. The SDKs and the agent skills repository on GitHub are ISC |\n| Tools exposed | 1096 | 18 |\n| Read-only variant documented | yes | no |\n| llms.txt | yes | yes |\n| MCP registry | `io.github.PostHog/mcp` | `com.statsig/statsig-mcp-server` |\n| Last release | 2026-10-05 | 2026-09-28 |\n| Terms last updated | 2026-06-29 | 2025-08-04 |\n| Privacy policy last updated | 2026-06-29 | 2026-08-31 |\n| Customer content may train models | yes, with an opt-out | 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 | yes |\n| Arbitration or class-action waiver | not found in the text | yes |\n| Popularity | 40k stars, 15.2M npm/wk | 4.2M npm/wk, 894k PyPI/wk |\n\n## Verdicts\n\n**PostHog.** PostHog suits agents that need to query product data and manage flags or experiments. Its hosted MCP server has OAuth scopes, a read-only mode and a one-tool CLI mode over 1,096 tools. The status page shows 31 incidents in 90 days, four on analytics queries, and three security incidents were disclosed in the last year.\n\n**Statsig.** Statsig suits agents that manage feature gates and experiments and read their results. Its MCP server has 18 default tools, OAuth, read-only access by project and role, and a confirmation on updates. Errors carry only a status and a message, no idempotency keys were found, and the privacy notice is Amplitude's and doesn't name Statsig.\n\n## Before you call either\n\n### PostHog\n\n1. Add `?readonly=true` or the `x-posthog-read-only` header to the MCP URL unless the task needs writes\n2. Pin the session with `x-posthog-project-id`, which also removes the `switch-project` and `switch-organization` tools\n3. In CLI mode run `info \u003ctool\u003e` once before `call`, and send one `exec` command per request\n4. On a 429 with code `api_queries_budget_exceeded`, wait for `Retry-After` and read `X-PostHog-Query-Budget-Remaining-Bytes`\n5. Page SQL results by keyset on `timestamp`. `OFFSET` returns 400 for personal API keys, and results cap at 50,000 rows\n\n### Statsig\n\n1. Connect to https://api.statsig.com/v3/mcp. The official MCP registry entry still lists the V1 URL, which has 93 tools\n2. Call `get_context` first to learn the project, your permissions and the review settings\n3. Read the resource before `gate_update`, `experiment_update` or `dynamic_config_update`. They replace the whole resource, so resend every field you want kept\n4. Use `discover_tools` for partial edits, and fetch a fresh `operationHandle` when one expires\n5. On a 429 slow down and back off with jitter. Rejected attempts count towards the quota of about 1,800 mutations per 15 minutes\n\n## Questions\n\n### Which is better for AI agents, PostHog or Statsig?\n\nStatsig scores 72.3 (BB) on agent readiness against PostHog's 68.4 (B), and leads in 2 of 7 scored categories. PostHog leads on agent ergonomics, security \u0026 auth, maintenance \u0026 community and transparency \u0026 trust.\n\n### Do PostHog and Statsig need an API key?\n\nBoth take an API key or an OAuth sign-in.\n\n### Can an agent call PostHog and Statsig without installing anything?\n\nYes. PostHog has a hosted endpoint at https://us.posthog.com and Statsig at https://api.statsig.com/v3/mcp.\n\n### Are PostHog and Statsig open source?\n\nPostHog is open source (MIT for the repository outside the `ee` directory, which has its own licence. PostHog Cloud is a hosted service under PostHog's terms). No open-source release is listed for Statsig.\n\n\n## For agents\n\n- This comparison as JSON: https://www.anchorterminal.com/compare/posthog-vs-statsig.json, and with the fewest tokens: https://www.anchorterminal.com/compare/posthog-vs-statsig.min.md\n- Over MCP at https://www.anchorterminal.com/mcp (no key): `compare_tools {\"a\": \"posthog\", \"b\": \"statsig\"}`. From a terminal: `anchor compare posthog statsig`\n- Each listing in full: https://www.anchorterminal.com/api/v1/tools/posthog.json and https://www.anchorterminal.com/api/v1/tools/statsig.json\n\n## Other comparisons with PostHog or Statsig\n\n- [Amplitude vs PostHog](https://www.anchorterminal.com/compare/amplitude-vs-posthog.md)\n- [Amplitude vs Statsig](https://www.anchorterminal.com/compare/amplitude-vs-statsig.md)\n- [Fullstory vs PostHog](https://www.anchorterminal.com/compare/fullstory-vs-posthog.md)\n- [Fullstory vs Statsig](https://www.anchorterminal.com/compare/fullstory-vs-statsig.md)\n- [Mixpanel vs PostHog](https://www.anchorterminal.com/compare/mixpanel-vs-posthog.md)\n- [Mixpanel vs Statsig](https://www.anchorterminal.com/compare/mixpanel-vs-statsig.md)\n- [Pendo vs PostHog](https://www.anchorterminal.com/compare/pendo-vs-posthog.md)\n- [Pendo vs Statsig](https://www.anchorterminal.com/compare/pendo-vs-statsig.md)\n- [Heap vs PostHog](https://www.anchorterminal.com/compare/heap-vs-posthog.md)\n- [Heap vs Statsig](https://www.anchorterminal.com/compare/heap-vs-statsig.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- [Optimizely Experimentation vs PostHog](https://www.anchorterminal.com/compare/optimizely-vs-posthog.md)\n- [Optimizely Experimentation vs Statsig](https://www.anchorterminal.com/compare/optimizely-vs-statsig.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",
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    "description": "Statsig scores 72.3 (BB) on agent readiness against PostHog's 68.4 (B), and leads in 2 of 7 scored categories. PostHog leads on agent ergonomics, security \u0026 auth, maintenance \u0026 community and transparency \u0026 trust. Both do analytics query. Category scores, facts, verdicts and…",
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