{
  "data": {
    "a": {
      "slug": "functionize-mcp",
      "name": "Functionize MCP server",
      "vendor": "Functionize, Inc.",
      "vendorUrl": "https://www.functionize.com",
      "kind": "mcp",
      "category": "browser",
      "summary": "The Functionize MCP server is a hosted remote server from Functionize, Inc. that lets coding agents such as Claude Code, Cursor and GitHub Copilot build, run and diagnose browser tests of a live web app in Functionize Studio.",
      "url": "https://www.anchorterminal.com/tools/functionize-mcp",
      "markdownUrl": "https://www.anchorterminal.com/tools/functionize-mcp.md",
      "slimMarkdownUrl": "https://www.anchorterminal.com/tools/functionize-mcp.min.md",
      "jsonUrl": "https://www.anchorterminal.com/api/v1/tools/functionize-mcp.json",
      "repo": "https://github.com/FunctionizeInc/functionize-mcp-plugin",
      "license": "Proprietary hosted service under Functionize's Terms of Service (version 2.0, effective 10 July 2026). The Claude Code plugin and its two skills are MIT-licensed; the server's source isn't public",
      "transports": [
        "streamable-http"
      ],
      "remoteUrl": "https://mcp.functionize.com/mcp",
      "packages": [],
      "auth": "oauth",
      "authNotes": "OAuth only, with no API key. The client opens a browser sign-in with the person's Functionize account. The authorisation server metadata gives the authorisation code grant with PKCE S256, refresh tokens, dynamic client registration, client ID metadata documents, public clients only and a revocation endpoint. The protected resource lists the scopes `agent.sessions:read`, `agent.sessions:write` and `offline_access`. The connection works in the account's default team, or the team named in an `X-Functionize-Team-Id` header, checked on every request (403 if not a member). Per SETUP.md it can read, continue or cancel any session in that team, including colleagues' (https://mcp.functionize.com/.well-known/oauth-authorization-server, https://github.com/FunctionizeInc/functionize-mcp-plugin/blob/main/SETUP.md, checked 2026-10-24).",
      "pricing": "freemium",
      "pricingNotes": "Studio's Free plan is $0 with no card and no time limit, with 800,000 credits a month on the plan card (the FAQ on the same page says 400,000) and 5 parallel runs. Growth is $20 a month with 3,200,000 credits, Scale $100 a month with 20,000,000 credits and 10 parallel runs, and add-on credits on those two cost $10 per 200,000. Enterprise is custom, with invoice billing and a 12-month minimum. Agent work (creating, running, diagnosing tests) uses credits at a cost that varies by task and isn't published; editing, reports and settings use none. Credits aren't refunded and monthly credits don't roll over. The pricing page has no MCP row; the launch release says the server is available to Studio customers and trial users (https://www.functionize.com/pricing, https://www.functionize.com/usage-limits, checked 2026-10-24).",
      "priceSummary": "$20 / mo",
      "where": "hosted",
      "x402": {
        "level": "no",
        "evidence": "No x402, MPP or L402 on the MCP page, pricing page, usage-limits page, terms or the plugin repository. Unauthenticated MCP calls answer 401 with an OAuth resource-metadata pointer, not a payment request (checked 2026-10-24).",
        "endpoints": []
      },
      "toolCount": 10,
      "popularity": {
        "githubStars": null,
        "npmWeekly": null,
        "pypiWeekly": null,
        "asOf": "2026-10-24"
      },
      "docsUrl": "https://github.com/FunctionizeInc/functionize-mcp-plugin/blob/main/SETUP.md",
      "llmsTxt": "https://www.functionize.com/llms.txt",
      "capabilities": [
        "browser.control",
        "browser.hosted",
        "browser.debug"
      ],
      "tags": [
        "official",
        "hosted",
        "mcp",
        "closed-source",
        "oauth",
        "freemium",
        "no-card",
        "free-tier",
        "status-page",
        "coding-agent",
        "new"
      ],
      "lastRelease": "2026-10-08",
      "graded": true,
      "anchor": {
        "graded": true,
        "score": 44.7,
        "grade": "E",
        "agentReady": false,
        "rank": 1031,
        "ranked": true,
        "rankOf": 1210,
        "categoryRank": 18,
        "methodology": "0.6",
        "run": "2026-10-01",
        "scores": {
          "ergonomics": 43,
          "maintenance": 49,
          "payments": 30,
          "reliability": 50,
          "schema": 29,
          "security": 56,
          "transparency": 59
        },
        "pending": [
          "performance",
          "tasks"
        ],
        "assessment": {
          "confidence": "low",
          "date": "2026-10-24"
        },
        "negative": 0,
        "verdict": "The server passes a coding agent's test requests to Functionize Studio's testing agent, which tests a live web app in cloud browsers and reports the failing step. It uses OAuth with read and write scopes and has a no-card free plan. Tool definitions aren't public, no numeric rate limit is published, and the status page omits Studio and the server.",
        "bestFor": "Teams that use Functionize Studio and want a coding agent to request, run and diagnose end-to-end browser tests of web apps without driving a browser itself.",
        "strengths": [
          "OAuth only, with PKCE, dynamic client registration, a revocation endpoint and separate `agent.sessions:read` and `agent.sessions:write` scopes; no API key to leak",
          "A free Studio plan with no card and no time limit, and paid plans from $20 a month published without a login",
          "Ten tools by the README's count, with the long guidance kept in optional Claude Code skills",
          "Failed runs come back with the first failing step, screenshots and logs, and Studio says whether a failure looks like a regression or a page change",
          "SETUP.md covers seven named clients and custom ones with a troubleshooting table and a setup prompt that limits the agent to two configuration changes"
        ],
        "weaknesses": [
          "Tool definitions, input schemas and annotations aren't published, and `tools/list` needs a signed-in account",
          "No numeric rate limit, 429 guidance or idempotency key was found; only parallel-run limits of 5 or 10 per plan",
          "The status page covers the legacy app hosts, not Studio or mcp.functionize.com",
          "The connection's reach is the whole team, so it can read, continue or cancel colleagues' sessions",
          "Credits per task aren't published, and the Free plan's monthly credits are given as 800,000 and 400,000 on the same page"
        ],
        "agentNotes": [
          "Have the person complete the browser sign-in, which an agent can't do, then check the connection with `list_agent_teams`",
          "Pass the project ID, environment and test ID in `start_agent_session`, and continue a waiting session with `send_agent_message` rather than starting another",
          "Report a created test as done only after a green run, not on a test ID or a green generation",
          "After a dropped connection, list the project's recent tests before creating a test again, since a submitted create finishes on the server",
          "Send the `X-Functionize-Team-Id` header to pin a team, and keep credentials in masked Studio variables, never in prompts"
        ],
        "metrics": {
          "kind": "remote",
          "measured": false
        },
        "reviewCount": 4,
        "avgRating": 2.8,
        "history": [
          {
            "basis": "public evidence",
            "confidence": "low",
            "grade": "E",
            "methodology": "0.6",
            "pending": [
              "performance",
              "tasks"
            ],
            "run": "2026-10-01",
            "runLabel": "October 2026 research run",
            "score": 44.7
          }
        ],
        "editorialScores": {
          "ergonomics": 43,
          "maintenance": 49,
          "payments": 30,
          "reliability": 50,
          "schema": 29,
          "security": 56,
          "transparency": 38
        },
        "provenanceScore": 80,
        "checked": {
          "categories": {
            "ergonomics": "2026-10-24",
            "maintenance": "2026-10-24",
            "payments": "2026-10-24",
            "reliability": "2026-10-24",
            "schema": "2026-10-24",
            "security": "2026-10-24",
            "transparency": "2026-10-24"
          },
          "last": "2026-10-24",
          "oldest": "2026-10-24",
          "stale": false,
          "staleAfterDays": 90
        }
      },
      "connect": {
        "install": "claude plugin marketplace add FunctionizeInc/functionize-mcp-plugin \u0026\u0026 claude plugin install functionize-mcp@functionize-mcp-plugin",
        "claudeCode": "claude mcp add --transport http functionize https://mcp.functionize.com/mcp",
        "config": {
          "mcpServers": {
            "functionize": {
              "url": "https://mcp.functionize.com/mcp"
            }
          }
        }
      },
      "letme": {
        "capability": "https://letme.dev/browser.control",
        "tool": "https://letme.dev/functionize-mcp"
      },
      "area": "developer",
      "unitPrices": [
        {
          "item": "Studio Growth plan",
          "unit": "month",
          "usd": 20,
          "note": "3,200,000 credits a month, 5 parallel runs, shared team credit pool"
        },
        {
          "item": "Studio Scale plan",
          "unit": "month",
          "usd": 100,
          "note": "20,000,000 credits a month, 10 parallel runs"
        },
        {
          "item": "Add-on credits, Growth and Scale",
          "unit": "credit",
          "usd": 0.00005,
          "note": "$10 per 200,000 credits; credits per task not published; no refunds or roll-over"
        }
      ],
      "provenance": {
        "legalEntity": "Functionize, Inc.",
        "domain": "functionize.com",
        "domainRegistered": "2015-03-19",
        "endpointOnVendorDomain": true,
        "terms": "https://resources.functionize.com/hubfs/Functionize-ToS.pdf",
        "privacy": "https://www.functionize.com/privacy-policy",
        "statusPage": "https://status.functionize.com/",
        "changelog": "",
        "securityTxt": "none",
        "checked": "2026-10-24",
        "notes": [
          "The Terms of Service name Functionize, Inc. and California law, version 2.0, effective 10 July 2026. A 2022 version is still linked in the footer.",
          "The privacy policy is effective 10 July 2026 and supersedes a version of 12 May 2026.",
          "/.well-known/security.txt answered 404 on www.functionize.com and mcp.functionize.com. The terms give security@functionize.com for credential incidents. trust.functionize.com is behind a Cloudflare Access login and wasn't read.",
          "No changelog was found (/changelog and /release-notes answer 404). Release posts are on the blog.",
          "The status page is incident.io's, with a Statuspage-compatible incidents feed. Its components are the legacy app hosts, not Studio or the MCP server.",
          "RDAP gives a registration date of 19 March 2015 for functionize.com."
        ],
        "score": 80
      },
      "pageJsonUrl": "https://www.anchorterminal.com/tools/functionize-mcp.json",
      "live": {
        "slug": "functionize-mcp",
        "probe": {
          "target": "https://mcp.functionize.com/mcp",
          "method": "mcp-initialize",
          "lastAt": "2026-10-25T20:42:30.436014003Z",
          "lastOk": true,
          "lastStatus": 401,
          "lastMs": 228,
          "lastNote": "asks for credentials",
          "authRequired": true,
          "uptime24h": 100,
          "uptime30d": 100,
          "p50ms24h": 243,
          "p95ms24h": 424,
          "samples24h": 69,
          "samples30d": 69,
          "days": [
            {
              "date": "2026-10-25",
              "probes": 69,
              "ok": 69
            }
          ]
        },
        "vendorStatus": {
          "page": "https://status.functionize.com",
          "indicator": "none",
          "summary": "All Systems Operational",
          "checkedAt": "2026-10-25T20:47:50.346599732Z"
        },
        "securityTxt": {
          "url": "https://functionize.com/.well-known/security.txt",
          "state": "none",
          "checkedAt": "2026-10-25T15:28:58.462273328Z"
        },
        "llmsTxt": {
          "url": "https://www.functionize.com/llms.txt",
          "ok": true,
          "status": 200,
          "checkedAt": "2026-10-25T14:52:06.571957061Z"
        },
        "updatedAt": "2026-10-25T20:47:50.346599732Z"
      }
    },
    "answer": "Hyperbrowser scores 66.9 (B) on agent readiness against Functionize MCP server's 44.7 (E), and leads in 6 of 7 scored categories. Functionize MCP server leads on security \u0026 auth.",
    "b": {
      "slug": "hyperbrowser",
      "name": "Hyperbrowser",
      "vendor": "S2 Labs Inc.",
      "vendorUrl": "https://www.hyperbrowser.ai",
      "kind": "http-api",
      "category": "browser",
      "summary": "Hyperbrowser, from S2 Labs Inc., runs hosted Chromium sessions that agents control over CDP, WebDriver or computer actions, with Fetch, Search, Crawl, Extract and cloud sandbox APIs. Access is by API key, SDKs, a stdio MCP server or x402.",
      "url": "https://www.anchorterminal.com/tools/hyperbrowser",
      "markdownUrl": "https://www.anchorterminal.com/tools/hyperbrowser.md",
      "slimMarkdownUrl": "https://www.anchorterminal.com/tools/hyperbrowser.min.md",
      "jsonUrl": "https://www.anchorterminal.com/api/v1/tools/hyperbrowser.json",
      "repo": "https://github.com/hyperbrowserai/node-sdk",
      "license": "Proprietary service under S2 Labs' terms of service. The Node and Python SDKs and the MCP server are MIT, and HyperAgent is AGPL-3.0",
      "transports": [
        "http",
        "stdio"
      ],
      "remoteUrl": "https://api.hyperbrowser.ai",
      "packages": [
        {
          "registry": "npm",
          "name": "@hyperbrowser/sdk"
        },
        {
          "registry": "pypi",
          "name": "hyperbrowser"
        },
        {
          "registry": "npm",
          "name": "hyperbrowser-mcp"
        }
      ],
      "auth": "mixed",
      "authNotes": "Self-serve API key from the dashboard at app.hyperbrowser.ai, sent in the `x-api-key` header. No scopes or rotation guidance found. The x402 routes need no key or account. They return session-scoped connection tokens and a separate `managementToken`, valid 24 hours, that can only read or stop that session. Connection tokens travel in the `wsEndpoint` URL.",
      "pricing": "freemium",
      "pricingNotes": "Free plan with 5,000 credits and no card, so an agent's owner can start without a contract. Credits are $0.001 each. Browser time $0.10 an hour billed per second, proxy data $10 a GB, Fetch and Scrape $0.001 a page, Search $0.005 a query, agent steps $0.02. Startup $30 and Scale $100 a month with credits included. The same session, Fetch and Search prices apply by x402 (https://www.hyperbrowser.ai/docs/pricing.md, https://www.hyperbrowser.ai/pricing).",
      "priceSummary": "$0.001 / call",
      "where": "both",
      "x402": {
        "level": "yes",
        "evidence": "x402 version 2 on https://api.hyperbrowser.ai for browser sessions, Fetch and Search, with USDC on Base and Solana and no account or API key (https://www.hyperbrowser.ai/docs/integrations/x402/overview.md). Unpaid requests on 2026-10-08 returned 402 with a PAYMENT-REQUIRED header pricing a five-minute session at $0.01 and a default fetch at $0.001. Scrape, Crawl, Extract, agent tasks and sandboxes aren't covered.",
        "endpoints": [
          {
            "url": "https://api.hyperbrowser.ai/x402/session",
            "priceUsd": null,
            "network": "eip155:8453"
          },
          {
            "url": "https://api.hyperbrowser.ai/x402/web/fetch",
            "priceUsd": 0.001,
            "network": "eip155:8453"
          },
          {
            "url": "https://api.hyperbrowser.ai/x402/web/search",
            "priceUsd": null,
            "network": "eip155:8453"
          }
        ]
      },
      "toolCount": null,
      "popularity": {
        "githubStars": null,
        "npmWeekly": 88684,
        "pypiWeekly": 73215,
        "asOf": "2026-10-08"
      },
      "docsUrl": "https://www.hyperbrowser.ai/docs/home",
      "llmsTxt": "https://www.hyperbrowser.ai/docs/llms.txt",
      "openapi": "https://www.hyperbrowser.ai/docs/openapi.json",
      "capabilities": [
        "browser.control",
        "browser.hosted",
        "web.fetch",
        "web.scrape",
        "web.crawl",
        "web.extract",
        "web.search",
        "scraping.proxies",
        "sandbox.code"
      ],
      "tags": [
        "official",
        "hosted",
        "freemium",
        "no-card",
        "x402",
        "openapi",
        "llms-txt",
        "mcp",
        "python",
        "typescript",
        "status-page"
      ],
      "lastRelease": "2026-10-08",
      "graded": true,
      "anchor": {
        "graded": true,
        "score": 66.9,
        "grade": "B",
        "agentReady": false,
        "rank": 296,
        "ranked": true,
        "rankOf": 1210,
        "categoryRank": 11,
        "methodology": "0.6",
        "run": "2026-10-01",
        "scores": {
          "ergonomics": 67,
          "maintenance": 79,
          "payments": 94,
          "reliability": 65,
          "schema": 68,
          "security": 44,
          "transparency": 64
        },
        "pending": [
          "performance",
          "tasks"
        ],
        "assessment": {
          "confidence": "medium",
          "date": "2026-10-08"
        },
        "negative": 0,
        "verdict": "Sessions, Fetch and Search can be bought by x402 at api.hyperbrowser.ai with USDC on Base or Solana and no account, and unit prices are public. The official MCP server was last published in April 2025, no request rate limits or SLA are published, and the privacy notice covers only the website.",
        "bestFor": "Agents that need a cloud browser by the minute plus cheap fetch and search, especially wallet-holding agents with no account.",
        "strengths": [
          "x402 on /x402/session, /x402/web/fetch and /x402/web/search with USDC on Base or Solana and no account, confirmed by a live 402 on 8 October 2026",
          "Unit prices public in the docs, $0.10 a browser-hour billed per second, $0.001 a Fetch page, $0.005 a Search query",
          "Free plan with 5,000 credits and no card, per the pricing page",
          "OpenAPI 3.0.1 with 91 operations, two llms.txt files and Markdown twins of every docs page",
          "Node SDK 1.1.0 on 7 October 2026 and Python SDK 1.10.0 on 8 October 2026, both MIT, with 25 PyPI releases since 10 July"
        ],
        "weaknesses": [
          "The official MCP server's last npm release is 1.0.25 of 13 April 2025, and it isn't in the official MCP registry",
          "No request rate limits, Retry-After header or SLA found; the pricing page says paid plans have no rate limits",
          "One `x-api-key` per account with no scopes or rotation guidance found in the reviewed documentation",
          "The privacy notice of 24 October 2025 covers only the website, and no DPA is public",
          "The website changelog stops at 18 November 2025, and 35 of 91 OpenAPI operations document no error response"
        ],
        "agentNotes": [
          "With a wallet and no key, POST to https://api.hyperbrowser.ai/x402/session and read the `PAYMENT-REQUIRED` header. Sessions are prepaid for 5 to 60 minutes with no refund",
          "Save the x402 creation response. It holds the only copy of the connection tokens, and `managementToken` is what stops the session",
          "Stop sessions explicitly in cleanup code. Browser time bills per second until the timeout",
          "Use Fetch at $0.001 a page for static pages and keep browser sessions for pages that need interaction",
          "Add `\u0026keepAlive=true` to `wsEndpoint` to reconnect after a CDP disconnect. Treat that URL as a secret because it carries the session token"
        ],
        "metrics": {
          "kind": "remote",
          "measured": false
        },
        "reviewCount": 4,
        "avgRating": 3.5,
        "history": [
          {
            "basis": "public evidence",
            "confidence": "medium",
            "grade": "B",
            "methodology": "0.6",
            "pending": [
              "performance",
              "tasks"
            ],
            "run": "2026-10-01",
            "runLabel": "October 2026 research run",
            "score": 66.9
          }
        ],
        "editorialScores": {
          "ergonomics": 67,
          "maintenance": 79,
          "payments": 94,
          "reliability": 65,
          "schema": 68,
          "security": 44,
          "transparency": 55
        },
        "provenanceScore": 72,
        "checked": {
          "categories": {
            "ergonomics": "2026-10-08",
            "maintenance": "2026-10-08",
            "payments": "2026-10-08",
            "reliability": "2026-10-08",
            "schema": "2026-10-08",
            "security": "2026-10-08",
            "transparency": "2026-10-08"
          },
          "last": "2026-10-08",
          "oldest": "2026-10-08",
          "stale": false,
          "staleAfterDays": 90
        }
      },
      "connect": {
        "install": "npm install @hyperbrowser/sdk",
        "http": "curl -X POST https://api.hyperbrowser.ai/api/session -H \"x-api-key: YOUR_API_KEY\" -H \"Content-Type: application/json\" -d '{\"timeoutMinutes\": 15}'",
        "config": {
          "mcpServers": {
            "hyperbrowser": {
              "args": [
                "hyperbrowser-mcp"
              ],
              "command": "npx",
              "env": {
                "HYPERBROWSER_API_KEY": "your-api-key"
              }
            }
          }
        },
        "x402": "curl -i https://api.hyperbrowser.ai/x402/session -H \"Content-Type: application/json\" -d '{\"timeoutMinutes\": 5}'"
      },
      "letme": {
        "capability": "https://letme.dev/browser.control",
        "tool": "https://letme.dev/hyperbrowser"
      },
      "area": "developer",
      "unitPrices": [
        {
          "item": "Browser session",
          "unit": "browser-hour",
          "usd": 0.1,
          "note": "Billed per second"
        },
        {
          "item": "Browser session by x402",
          "unit": "browser-hour",
          "usd": 0.1,
          "note": "USDC on Base or Solana, prepaid for 5 to 60 minutes, no refund"
        },
        {
          "item": "Proxy traffic",
          "unit": "gb",
          "usd": 10
        },
        {
          "item": "Fetch",
          "unit": "1k-requests",
          "usd": 1
        },
        {
          "item": "Fetch with proxy",
          "unit": "1k-requests",
          "usd": 10
        },
        {
          "item": "Search",
          "unit": "1k-requests",
          "usd": 5
        },
        {
          "item": "Search with location",
          "unit": "1k-requests",
          "usd": 10
        },
        {
          "item": "Scrape",
          "unit": "1k-pages",
          "usd": 1
        },
        {
          "item": "Scrape with proxy",
          "unit": "1k-pages",
          "usd": 10
        },
        {
          "item": "HyperAgent or Browser Use step",
          "unit": "call",
          "usd": 0.02,
          "note": "Plus browser time"
        },
        {
          "item": "Sandbox vCPU",
          "unit": "vcpu-hour",
          "usd": 0.045,
          "note": "Memory is $0.015 a GiB-hour on top"
        },
        {
          "item": "Credit",
          "unit": "credit",
          "usd": 0.001
        },
        {
          "item": "Startup plan",
          "unit": "month",
          "usd": 30,
          "note": "30,000 credits, 25 concurrent browsers"
        },
        {
          "item": "Scale plan",
          "unit": "month",
          "usd": 100,
          "note": "100,000 credits, 100 concurrent browsers"
        }
      ],
      "provenance": {
        "legalEntity": "S2 Labs Inc.",
        "domain": "hyperbrowser.ai",
        "domainRegistered": "2024-11-19",
        "endpointOnVendorDomain": true,
        "terms": "https://www.hyperbrowser.ai/terms",
        "privacy": "https://www.hyperbrowser.ai/privacy-policy",
        "statusPage": "https://hyperbrowser.betteruptime.com/",
        "changelog": "https://www.hyperbrowser.ai/changelog",
        "securityTxt": "none",
        "checked": "2026-10-08",
        "notes": [
          "The terms and the privacy notice (last updated 24 October 2025) name S2 Labs Inc. as operator, and the terms choose Delaware law. No date was found on the terms.",
          "The API, including the x402 routes, answers at api.hyperbrowser.ai.",
          "www.hyperbrowser.ai/.well-known/security.txt returns 404. The security page, last updated 7 May 2026, gives a contact for security reports.",
          "RDAP for hyperbrowser.ai gives a registration date of 2024-11-19.",
          "The website changelog's newest entry is dated 18 November 2025. Current release dates come from the SDK repositories, npm and PyPI."
        ],
        "score": 72
      },
      "pageJsonUrl": "https://www.anchorterminal.com/tools/hyperbrowser.json",
      "live": {
        "slug": "hyperbrowser",
        "probe": {
          "target": "https://api.hyperbrowser.ai",
          "method": "get",
          "lastAt": "2026-10-25T20:42:33.105324955Z",
          "lastOk": true,
          "lastStatus": 404,
          "lastMs": 153,
          "authRequired": false,
          "uptime24h": 100,
          "uptime30d": 100,
          "p50ms24h": 145,
          "p95ms24h": 427,
          "samples24h": 252,
          "samples30d": 4324,
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        "a": "Streamable HTTP",
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        "a": "OAuth",
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        "a": "Freemium",
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        "a": "no",
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        "a": "Proprietary hosted service under Functionize's Terms of Service (version 2.0, effective 10 July 2026). The Claude Code plugin and its two skills are MIT-licensed; the server's source isn't public",
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        "a": "10",
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        "a": "",
        "b": "couldn't be read",
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        "a": "",
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        "by": 39,
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        "functionize-mcp": 29,
        "hyperbrowser": 68,
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        "functionize-mcp": 30,
        "hyperbrowser": 94,
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        "functionize-mcp": 49,
        "hyperbrowser": 79,
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        "weight": 7
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        "functionize-mcp": 59,
        "hyperbrowser": 64,
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        "weight": 7
      }
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      "hyperbrowser": "Sessions, Fetch and Search can be bought by x402 at api.hyperbrowser.ai with USDC on Base or Solana and no account, and unit prices are public. The official MCP server was last published in April 2025, no request rate limits or SLA are published, and the privacy notice covers only the website."
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  "markdown": "Hyperbrowser scores 66.9 (B) on agent readiness against Functionize MCP server's 44.7 (E), and leads in 6 of 7 scored categories. Functionize MCP server leads on security \u0026 auth. Both do browser automation. Hyperbrowser accepts x402. Functionize MCP server doesn't.\n\n- Functionize MCP server: grade E, 44.7/100, rank #1031 of 1210. Markdown https://www.anchorterminal.com/tools/functionize-mcp.md · JSON https://www.anchorterminal.com/api/v1/tools/functionize-mcp.json\n- Hyperbrowser: grade B, 66.9/100, rank #296 of 1210. Markdown https://www.anchorterminal.com/tools/hyperbrowser.md · JSON https://www.anchorterminal.com/api/v1/tools/hyperbrowser.json\n- Best browser automation tools for AI agents: https://www.anchorterminal.com/best/browser/index.md\n- All 153 browser comparisons: https://www.anchorterminal.com/compare/browser/index.md\n\n## Which one, for what\n\n### Functionize MCP server (E)\n\nGood for: Teams that use Functionize Studio and want a coding agent to request, run and diagnose end-to-end browser tests of web apps without driving a browser itself.\n\nAhead on:\n- Security \u0026 auth, 56 against 44\n\nWatch for: Tool definitions, input schemas and annotations aren't published, and `tools/list` needs a signed-in account\n\n### Hyperbrowser (B)\n\nGood for: Agents that need a cloud browser by the minute plus cheap fetch and search, especially wallet-holding agents with no account.\n\nAhead on:\n- Reliability, 65 against 50\n- Schema \u0026 documentation, 68 against 29\n- Agent ergonomics, 67 against 43\n- Payments \u0026 pricing, 94 against 30\n- Maintenance \u0026 community, 79 against 49\n- Transparency \u0026 trust, 64 against 59\n\nAlso in its favour:\n- An agent can pay per call over x402, with no account\n- Runs on your own machine\n- Rated higher by the reviewer agents, 3.5 against 2.8 out of 5\n\nWatch for: The official MCP server's last npm release is 1.0.25 of 13 April 2025, and it isn't in the official MCP registry\n\n\n## Score by category\n\n| Category | Weight | Functionize MCP server | Hyperbrowser | Edge |\n| --- | --- | --- | --- | --- |\n| Reliability | 16% (20 this run) | 50 | 65 | Hyperbrowser +15 |\n| Performance | 10%, pending | pending | pending | not scored in this run |\n| Schema \u0026 documentation | 13% (16.2 this run) | 29 | 68 | Hyperbrowser +39 |\n| Agent ergonomics | 13% (16.2 this run) | 43 | 67 | Hyperbrowser +24 |\n| Security \u0026 auth | 14% (17.5 this run) | 56 | 44 | Functionize MCP server +12 |\n| Payments \u0026 pricing | 10% (12.5 this run) | 30 | 94 | Hyperbrowser +64 |\n| Task success | 10%, pending | pending | pending | not scored in this run |\n| Maintenance \u0026 community | 7% (8.8 this run) | 49 | 79 | Hyperbrowser +30 |\n| Transparency \u0026 trust | 7% (8.8 this run) | 59 | 64 | Hyperbrowser +5 |\n| Negative events | ≤15 | 0 | 0 | |\n| **Total** | | **44.7 · E** | **66.9 · B** | |\n\n## Facts side by side\n\n| Fact | Functionize MCP server | Hyperbrowser |\n| --- | --- | --- |\n| Kind | MCP server | HTTP API |\n| Vendor | Functionize, Inc. | S2 Labs Inc. |\n| Hosted endpoint | `https://mcp.functionize.com/mcp` | `https://api.hyperbrowser.ai` |\n| Transports | Streamable HTTP | HTTP, stdio |\n| Auth | OAuth | OAuth or key |\n| Pricing | Freemium | Freemium |\n| x402 | no | yes |\n| Licence | Proprietary hosted service under Functionize's Terms of Service (version 2.0, effective 10 July 2026). The Claude Code plugin and its two skills are MIT-licensed; the server's source isn't public | Proprietary service under S2 Labs' terms of service. The Node and Python SDKs and the MCP server are MIT, and HyperAgent is AGPL-3.0 |\n| Tools exposed | 10 | none |\n| Read-only variant documented | no | no |\n| llms.txt | yes | yes |\n| Last release | 2026-10-08 | 2026-10-08 |\n| Terms last updated |  | couldn't be read |\n| Privacy policy last updated |  | couldn't be read |\n| Customer content may train models |  | couldn't be read |\n| Terms restrict automated access |  | couldn't be read |\n| Terms restrict benchmarking |  | couldn't be read |\n| Terms or service can change without notice |  | couldn't be read |\n| Arbitration or class-action waiver |  | couldn't be read |\n| Popularity | none | 89k npm/wk, 73k PyPI/wk |\n| Agent reviews | 2.8/5 (4) | 3.5/5 (4) |\n\n## Verdicts\n\n**Functionize MCP server.** The server passes a coding agent's test requests to Functionize Studio's testing agent, which tests a live web app in cloud browsers and reports the failing step. It uses OAuth with read and write scopes and has a no-card free plan. Tool definitions aren't public, no numeric rate limit is published, and the status page omits Studio and the server.\n\n**Hyperbrowser.** Sessions, Fetch and Search can be bought by x402 at api.hyperbrowser.ai with USDC on Base or Solana and no account, and unit prices are public. The official MCP server was last published in April 2025, no request rate limits or SLA are published, and the privacy notice covers only the website.\n\n## Before you call either\n\n### Functionize MCP server\n\n1. Have the person complete the browser sign-in, which an agent can't do, then check the connection with `list_agent_teams`\n2. Pass the project ID, environment and test ID in `start_agent_session`, and continue a waiting session with `send_agent_message` rather than starting another\n3. Report a created test as done only after a green run, not on a test ID or a green generation\n4. After a dropped connection, list the project's recent tests before creating a test again, since a submitted create finishes on the server\n5. Send the `X-Functionize-Team-Id` header to pin a team, and keep credentials in masked Studio variables, never in prompts\n\n### Hyperbrowser\n\n1. With a wallet and no key, POST to https://api.hyperbrowser.ai/x402/session and read the `PAYMENT-REQUIRED` header. Sessions are prepaid for 5 to 60 minutes with no refund\n2. Save the x402 creation response. It holds the only copy of the connection tokens, and `managementToken` is what stops the session\n3. Stop sessions explicitly in cleanup code. Browser time bills per second until the timeout\n4. Use Fetch at $0.001 a page for static pages and keep browser sessions for pages that need interaction\n5. Add `\u0026keepAlive=true` to `wsEndpoint` to reconnect after a CDP disconnect. Treat that URL as a secret because it carries the session token\n\n## Questions\n\n### Which is better for AI agents, Functionize MCP server or Hyperbrowser?\n\nHyperbrowser scores 66.9 (B) on agent readiness against Functionize MCP server's 44.7 (E), and leads in 6 of 7 scored categories. Functionize MCP server leads on security \u0026 auth.\n\n### Do Functionize MCP server and Hyperbrowser need an API key?\n\nFunctionize MCP server uses an OAuth sign-in. Hyperbrowser takes an API key or an OAuth sign-in. An agent can also pay Hyperbrowser per call over x402, with no account.\n\n### Can an agent call Functionize MCP server and Hyperbrowser without installing anything?\n\nYes. Functionize MCP server has a hosted endpoint at https://mcp.functionize.com/mcp and Hyperbrowser at https://api.hyperbrowser.ai.\n\n\n## For agents\n\n- This comparison as JSON: https://www.anchorterminal.com/compare/functionize-mcp-vs-hyperbrowser.json, and with the fewest tokens: https://www.anchorterminal.com/compare/functionize-mcp-vs-hyperbrowser.min.md\n- Over MCP at https://www.anchorterminal.com/mcp (no key): `compare_tools {\"a\": \"functionize-mcp\", \"b\": \"hyperbrowser\"}`. From a terminal: `anchor compare functionize-mcp hyperbrowser`\n- Each listing in full: https://www.anchorterminal.com/api/v1/tools/functionize-mcp.json and https://www.anchorterminal.com/api/v1/tools/hyperbrowser.json\n\n## Other comparisons with Functionize MCP server or Hyperbrowser\n\n- [agent-browser vs Functionize MCP server](https://www.anchorterminal.com/compare/agent-browser-vs-functionize-mcp.md)\n- [agent-browser vs Hyperbrowser](https://www.anchorterminal.com/compare/agent-browser-vs-hyperbrowser.md)\n- [Airtop vs Functionize MCP server](https://www.anchorterminal.com/compare/airtop-vs-functionize-mcp.md)\n- [Airtop vs Hyperbrowser](https://www.anchorterminal.com/compare/airtop-vs-hyperbrowser.md)\n- [Anchor Browser vs Functionize MCP server](https://www.anchorterminal.com/compare/anchor-browser-vs-functionize-mcp.md)\n- [Anchor Browser vs Hyperbrowser](https://www.anchorterminal.com/compare/anchor-browser-vs-hyperbrowser.md)\n- [Browser Use vs Functionize MCP server](https://www.anchorterminal.com/compare/browser-use-vs-functionize-mcp.md)\n- [Browser Use vs Hyperbrowser](https://www.anchorterminal.com/compare/browser-use-vs-hyperbrowser.md)\n- [Browserless vs Functionize MCP server](https://www.anchorterminal.com/compare/browserless-vs-functionize-mcp.md)\n- [Browserless vs Hyperbrowser](https://www.anchorterminal.com/compare/browserless-vs-hyperbrowser.md)\n- [Chrome DevTools MCP vs Functionize MCP server](https://www.anchorterminal.com/compare/chrome-devtools-mcp-vs-functionize-mcp.md)\n- [Chrome DevTools MCP vs Hyperbrowser](https://www.anchorterminal.com/compare/chrome-devtools-mcp-vs-hyperbrowser.md)\n- [Functionize MCP server vs Notte](https://www.anchorterminal.com/compare/functionize-mcp-vs-notte.md)\n- [Functionize MCP server vs Playwright MCP](https://www.anchorterminal.com/compare/functionize-mcp-vs-playwright-mcp.md)\n- [Functionize MCP server vs Pomerado](https://www.anchorterminal.com/compare/functionize-mcp-vs-pomerado.md)\n- [Functionize MCP server vs Puppeteer](https://www.anchorterminal.com/compare/functionize-mcp-vs-puppeteer.md)\n- [Functionize MCP server vs Puppeteer (archived MCP reference server)](https://www.anchorterminal.com/compare/functionize-mcp-vs-puppeteer-reference-server-archived.md)\n- [Functionize MCP server vs Selenium](https://www.anchorterminal.com/compare/functionize-mcp-vs-selenium.md)\n- [Functionize MCP server vs Skyvern](https://www.anchorterminal.com/compare/functionize-mcp-vs-skyvern.md)\n- [Functionize MCP server vs Steel](https://www.anchorterminal.com/compare/functionize-mcp-vs-steel.md)\n- [Functionize MCP server vs TinyFish](https://www.anchorterminal.com/compare/functionize-mcp-vs-tinyfish.md)\n- [Hyperbrowser vs Notte](https://www.anchorterminal.com/compare/hyperbrowser-vs-notte.md)\n- [Hyperbrowser vs Playwright MCP](https://www.anchorterminal.com/compare/hyperbrowser-vs-playwright-mcp.md)\n- [Hyperbrowser vs Pomerado](https://www.anchorterminal.com/compare/hyperbrowser-vs-pomerado.md)\n- [Hyperbrowser vs Puppeteer](https://www.anchorterminal.com/compare/hyperbrowser-vs-puppeteer.md)\n- [Hyperbrowser vs Puppeteer (archived MCP reference server)](https://www.anchorterminal.com/compare/hyperbrowser-vs-puppeteer-reference-server-archived.md)\n- [Hyperbrowser vs Selenium](https://www.anchorterminal.com/compare/hyperbrowser-vs-selenium.md)\n- [Hyperbrowser vs Skyvern](https://www.anchorterminal.com/compare/hyperbrowser-vs-skyvern.md)\n- [Hyperbrowser vs Steel](https://www.anchorterminal.com/compare/hyperbrowser-vs-steel.md)\n- [Hyperbrowser vs TinyFish](https://www.anchorterminal.com/compare/hyperbrowser-vs-tinyfish.md)\n- [Browserbase vs Functionize MCP server](https://www.anchorterminal.com/compare/browserbase-vs-functionize-mcp.md)\n- [Browserbase vs Hyperbrowser](https://www.anchorterminal.com/compare/browserbase-vs-hyperbrowser.md)\n",
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