{
  "data": {
    "a": {
      "slug": "browserless",
      "name": "Browserless",
      "vendor": "browserless.io, Inc.",
      "vendorUrl": "https://www.browserless.io",
      "kind": "http-api",
      "category": "browser",
      "summary": "Browserless runs hosted headless browsers that agents drive over CDP, Playwright, REST endpoints, BrowserQL or its official MCP server. The same software can be self-hosted from a Docker image.",
      "url": "https://www.anchorterminal.com/tools/browserless",
      "markdownUrl": "https://www.anchorterminal.com/tools/browserless.md",
      "slimMarkdownUrl": "https://www.anchorterminal.com/tools/browserless.min.md",
      "jsonUrl": "https://www.anchorterminal.com/api/v1/tools/browserless.json",
      "repo": "https://github.com/browserless/browserless",
      "license": "SSPL 1.0 or a commercial licence for the core server and the MCP server. The BAP TypeScript SDK is MIT. BrowserQL, stealth and other cloud additions are proprietary",
      "transports": [
        "http",
        "streamable-http",
        "stdio"
      ],
      "remoteUrl": "https://production-sfo.browserless.io",
      "packages": [
        {
          "registry": "npm",
          "name": "@browserless.io/mcp"
        },
        {
          "registry": "npm",
          "name": "@browserless.io/bap-ts"
        },
        {
          "registry": "npm",
          "name": "@browserless.io/browserless"
        }
      ],
      "auth": "mixed",
      "authNotes": "Self-serve API token from the account dashboard after signing up in a browser. REST, BrowserQL and WebSocket routes take it as `?token=` in the URL. The hosted MCP server accepts OAuth sign-in with a Browserless account, an `Authorization: Bearer` header, or `?token=` for URL-only clients. An account holds up to 20 named tokens, each shown once and revocable on its own. Cloud tokens have no scopes. The admin, developer and viewer token roles apply to self-hosted Enterprise containers only.",
      "pricing": "freemium",
      "pricingNotes": "Free with 1,000 units a month, 2 concurrent browsers and 2-minute sessions, no card. A unit is up to 30 seconds of browser time. Prototyping is $35 a month ($25 billed annually) with 20,000 units, then $0.0020 a unit. Starter is $200 ($140) with 180,000 units, then $0.0017. Scale is $500 ($350) with 500,000 units, then $0.0015. Enterprise and self-hosting licences are priced by sales. An agent can start on the free plan once a person has signed up (https://www.browserless.io/pricing, checked 2026-10-08).",
      "priceSummary": "$0.002 / credit",
      "where": "both",
      "x402": {
        "level": "no",
        "evidence": "No x402, MPP or L402 in the docs (llms-full.txt), the OpenAPI document or the pricing page (checked 2026-10-08). The Stripe Link checkout tools are for an agent paying a merchant, not for paying Browserless.",
        "endpoints": []
      },
      "toolCount": 14,
      "popularity": {
        "githubStars": 13786,
        "npmWeekly": 3484,
        "pypiWeekly": null,
        "asOf": "2026-10-08"
      },
      "docsUrl": "https://docs.browserless.io",
      "llmsTxt": "https://docs.browserless.io/llms.txt",
      "openapi": "https://www.browserless.io/swagger.json",
      "capabilities": [
        "browser.control",
        "browser.hosted",
        "browser.debug",
        "scraping.js-render",
        "scraping.anti-bot",
        "scraping.proxies",
        "web.scrape",
        "web.crawl",
        "web.search",
        "pdf.generate"
      ],
      "tags": [
        "official",
        "hosted",
        "self-hosted",
        "freemium",
        "free-tier",
        "no-card",
        "mcp",
        "oauth",
        "openapi",
        "llms-txt",
        "typescript",
        "source-available",
        "commercial-licence",
        "proxies",
        "status-page",
        "soc2"
      ],
      "lastRelease": "2026-10-05",
      "graded": true,
      "anchor": {
        "graded": true,
        "score": 70.4,
        "grade": "BB",
        "agentReady": true,
        "rank": 158,
        "ranked": true,
        "rankOf": 1076,
        "categoryRank": 6,
        "methodology": "0.4",
        "run": "2026-10-01",
        "scores": {
          "ergonomics": 78,
          "maintenance": 82,
          "payments": 40,
          "reliability": 82,
          "schema": 89,
          "security": 53,
          "transparency": 62
        },
        "pending": [
          "performance",
          "tasks"
        ],
        "assessment": {
          "confidence": "medium",
          "date": "2026-10-08"
        },
        "negative": 0,
        "verdict": "An OpenAPI document, llms.txt and a 14-tool MCP server with annotations on every tool make the service easy for an agent to read, and the free plan needs no card. The API token travels in the URL query string by default, cloud tokens carry no scopes, and no machine payment route exists.",
        "bestFor": "Agents that need a real browser in the cloud with stealth, proxies and CAPTCHA solving, and teams that want the option of running the same server themselves.",
        "strengths": [
          "OpenAPI 3.0.0 document with 87 paths, llms.txt, llms-full.txt and Markdown twins of the docs",
          "Hosted MCP server at mcp.browserless.io with 14 documented tools, each carrying read-only and destructive annotations",
          "Free plan with 1,000 units a month and no card, with per-unit overage prices published for paid plans",
          "Up to 20 named API tokens per account, each revocable on its own, plus request logs filterable by key",
          "MCP server released 32 times between 10 July and 5 October 2026, with a dated changelog in the repository"
        ],
        "weaknesses": [
          "REST and WebSocket routes take the API token as `?token=` in the URL, which the docs give as the standard method",
          "Cloud tokens have no scopes or roles. Token roles exist only on self-hosted Enterprise containers",
          "No x402, MPP or L402, and an account needs a person to sign up in a browser",
          "No prompt-injection guidance found in the docs or in the MCP agent prompt",
          "The terms allow the service to be changed or discontinued without notice, and the subprocessor list is on request only"
        ],
        "agentNotes": [
          "Send the token as `Authorization: Bearer` to the MCP server. On REST and WebSocket routes it goes in `?token=`, so keep those URLs out of logs",
          "Close sessions as soon as the work is done. Browser time bills one unit per 30 seconds, rounded up, idle or not",
          "For multi-step work with `browserless_agent`, set `keepSessionAlive: true` on the first call and pass the returned `sessionId` after that. Sessions are one-shot by default since server 1.33.0",
          "On 429, back off and retry. It means the plan's concurrency limit or queue is full, usually from sessions left open",
          "Match the path to the protocol. Use `/chromium` for CDP clients and `/chromium/playwright` only for `playwright.connect()`"
        ],
        "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": 70.4
          }
        ],
        "editorialScores": {
          "ergonomics": 78,
          "maintenance": 82,
          "payments": 40,
          "reliability": 82,
          "schema": 89,
          "security": 53,
          "transparency": 47
        },
        "provenanceScore": 77
      },
      "connect": {
        "install": "npx -y @browserless.io/mcp",
        "http": "curl -X POST \"https://production-sfo.browserless.io/screenshot?token=YOUR_API_TOKEN_HERE\" -H \"Content-Type: application/json\" -d '{\"url\": \"https://scraping-sandbox.netlify.app/dashboard\"}' -o response.png",
        "claudeCode": "claude mcp add --transport http browserless https://mcp.browserless.io/mcp --header \"Authorization: Bearer YOUR_API_TOKEN_HERE\"",
        "config": {
          "mcpServers": {
            "browserless": {
              "headers": {
                "Authorization": "Bearer YOUR_API_TOKEN_HERE"
              },
              "type": "http",
              "url": "https://mcp.browserless.io/mcp"
            }
          }
        }
      },
      "letme": {
        "capability": "https://letme.dev/browser.control",
        "tool": "https://letme.dev/browserless"
      },
      "area": "developer",
      "unitPrices": [
        {
          "item": "Unit overage, Prototyping plan",
          "unit": "credit",
          "usd": 0.002,
          "note": "One unit is up to 30 seconds of browser time"
        },
        {
          "item": "Unit overage, Starter plan",
          "unit": "credit",
          "usd": 0.0017
        },
        {
          "item": "Unit overage, Scale plan",
          "unit": "credit",
          "usd": 0.0015
        },
        {
          "item": "Browser time at the overage rate, Prototyping plan",
          "unit": "browser-hour",
          "usd": 0.24,
          "note": "Our arithmetic, 120 units at $0.0020"
        },
        {
          "item": "Browser time at the overage rate, Starter plan",
          "unit": "browser-hour",
          "usd": 0.204,
          "note": "Our arithmetic, 120 units at $0.0017"
        },
        {
          "item": "Browser time at the overage rate, Scale plan",
          "unit": "browser-hour",
          "usd": 0.18,
          "note": "Our arithmetic, 120 units at $0.0015"
        },
        {
          "item": "Prototyping plan",
          "unit": "month",
          "usd": 35,
          "note": "20,000 units, $25 a month billed annually"
        },
        {
          "item": "Starter plan",
          "unit": "month",
          "usd": 200,
          "note": "180,000 units, $140 a month billed annually"
        },
        {
          "item": "Scale plan",
          "unit": "month",
          "usd": 500,
          "note": "500,000 units, $350 a month billed annually"
        }
      ],
      "provenance": {
        "legalEntity": "browserless.io, Inc.",
        "domain": "browserless.io",
        "domainRegistered": "2017-09-06",
        "endpointOnVendorDomain": true,
        "terms": "https://www.browserless.io/terms-of-service",
        "privacy": "https://www.browserless.io/privacy-policy",
        "statusPage": "https://status.browserless.io",
        "changelog": "https://www.browserless.io/changelog",
        "securityTxt": "none",
        "checked": "2026-10-08",
        "notes": [
          "The terms of service name browserless.io, Inc., 23207 NE 192nd Ct, Battle Ground, WA 98604, United States. Neither the terms nor the privacy policy carries a date.",
          "www.browserless.io/.well-known/security.txt and docs.browserless.io/.well-known/security.txt both return 404. The trust centre sends vulnerability reports to security@browserless.io.",
          "RDAP for browserless.io gives a registration date of 2017-09-06.",
          "The API answers at production-sfo, production-lon and production-ams.browserless.io and the MCP server at mcp.browserless.io. The OAuth metadata at data.browserless.io names a supabase.co issuer."
        ],
        "score": 77
      },
      "pageJsonUrl": "https://www.anchorterminal.com/tools/browserless.json",
      "live": {
        "slug": "browserless",
        "probe": {
          "target": "https://production-sfo.browserless.io",
          "method": "get",
          "lastAt": "2026-10-14T09:41:45.283421931Z",
          "lastOk": true,
          "lastStatus": 401,
          "lastMs": 432,
          "lastNote": "asks for credentials",
          "authRequired": true,
          "uptime24h": 100,
          "uptime30d": 100,
          "p50ms24h": 438,
          "p95ms24h": 470,
          "samples24h": 248,
          "samples30d": 1432,
          "days": [
            {
              "date": "2026-10-08",
              "probes": 93,
              "ok": 93
            },
            {
              "date": "2026-10-09",
              "probes": 250,
              "ok": 250
            },
            {
              "date": "2026-10-10",
              "probes": 247,
              "ok": 247
            },
            {
              "date": "2026-10-11",
              "probes": 247,
              "ok": 247
            },
            {
              "date": "2026-10-12",
              "probes": 247,
              "ok": 247
            },
            {
              "date": "2026-10-13",
              "probes": 248,
              "ok": 248
            },
            {
              "date": "2026-10-14",
              "probes": 100,
              "ok": 100
            }
          ]
        },
        "vendorStatus": {
          "page": "https://status.browserless.io",
          "indicator": "unknown",
          "summary": "no machine-readable status found",
          "checkedAt": "2026-10-14T08:52:47.70186582Z"
        },
        "versions": [
          {
            "registry": "github",
            "name": "browserless/browserless",
            "version": "v2.57.0",
            "released": "2026-09-30",
            "seenAt": "2026-10-13T22:47:24.163871635Z"
          },
          {
            "registry": "npm",
            "name": "@browserless.io/bap-ts",
            "version": "2.0.0",
            "seenAt": "2026-10-13T22:47:20.800400616Z"
          },
          {
            "registry": "npm",
            "name": "@browserless.io/browserless",
            "version": "2.57.0",
            "seenAt": "2026-10-13T22:47:22.169113454Z"
          },
          {
            "registry": "npm",
            "name": "@browserless.io/mcp",
            "version": "1.38.0",
            "seenAt": "2026-10-13T22:47:19.958225066Z"
          }
        ],
        "githubStars": 13811,
        "npmWeekly": 2536,
        "securityTxt": {
          "url": "https://browserless.io/.well-known/security.txt",
          "state": "none",
          "checkedAt": "2026-10-13T15:46:08.614110614Z"
        },
        "llmsTxt": {
          "url": "https://docs.browserless.io/llms.txt",
          "ok": true,
          "status": 200,
          "checkedAt": "2026-10-13T14:11:01.979079023Z"
        },
        "domain": {
          "domain": "browserless.io",
          "checkedAt": "2026-10-11T13:18:31.335671585Z"
        },
        "pages": [
          {
            "url": "https://www.browserless.io/changelog",
            "kind": "changelog",
            "status": 200,
            "checkedAt": "2026-10-13T20:26:37.660772364Z",
            "changedAt": "0001-01-01T00:00:00Z",
            "fingerprint": "fe50f4cf4543"
          },
          {
            "url": "https://www.browserless.io/pricing",
            "kind": "pricing",
            "status": 200,
            "checkedAt": "2026-10-13T20:26:40.371731325Z",
            "changedAt": "0001-01-01T00:00:00Z",
            "fingerprint": "4b721f855891"
          },
          {
            "url": "https://www.browserless.io/privacy-policy",
            "kind": "privacy",
            "status": 200,
            "checkedAt": "2026-10-13T20:26:42.069567651Z",
            "changedAt": "0001-01-01T00:00:00Z",
            "fingerprint": "2d27c63baca4"
          },
          {
            "url": "https://www.browserless.io/terms-of-service",
            "kind": "terms",
            "status": 200,
            "checkedAt": "2026-10-13T20:26:44.112785177Z",
            "changedAt": "0001-01-01T00:00:00Z",
            "fingerprint": "407b3dff8ee7"
          }
        ],
        "updatedAt": "2026-10-14T09:41:45.283421931Z"
      }
    },
    "answer": "Selenium scores 73.6 (BB) on agent readiness against Browserless's 70.4 (BB), and leads in 4 of 7 scored categories. Browserless leads on agent ergonomics and security \u0026 auth.",
    "b": {
      "slug": "selenium",
      "name": "Selenium",
      "vendor": "Selenium project (Software Freedom Conservancy)",
      "vendorUrl": "https://www.selenium.dev",
      "kind": "sdk",
      "category": "browser",
      "summary": "Selenium is the open-source browser automation project behind the W3C WebDriver standard, with official bindings for Java, Python, C#, Ruby and JavaScript and a self-hosted Grid server that runs browsers on other machines.",
      "url": "https://www.anchorterminal.com/tools/selenium",
      "markdownUrl": "https://www.anchorterminal.com/tools/selenium.md",
      "slimMarkdownUrl": "https://www.anchorterminal.com/tools/selenium.min.md",
      "jsonUrl": "https://www.anchorterminal.com/api/v1/tools/selenium.json",
      "repo": "https://github.com/SeleniumHQ/selenium",
      "license": "Apache-2.0",
      "transports": [
        "http"
      ],
      "packages": [
        {
          "registry": "pypi",
          "name": "selenium"
        },
        {
          "registry": "npm",
          "name": "selenium-webdriver"
        },
        {
          "registry": "maven",
          "name": "org.seleniumhq.selenium:selenium-java"
        },
        {
          "registry": "nuget",
          "name": "Selenium.WebDriver"
        },
        {
          "registry": "rubygems",
          "name": "selenium-webdriver"
        }
      ],
      "auth": "none",
      "authNotes": "No account or key for the bindings, which run on the owner's machine. Grid accepts sessions without authentication unless both `--username` and `--password` are set, and Nodes register with a shared `--registration-secret` when one is configured. Site logins live in the browser profile or cookies the script sets.",
      "pricing": "free",
      "pricingNotes": "Free and open source under Apache-2.0, with nothing to buy and no hosted service from the project. Grid is self-hosted. Commercial clouds that run Selenium sessions are separate companies (checked 2026-10-14).",
      "priceSummary": "Free · OSS",
      "where": "local",
      "x402": {
        "level": "no",
        "evidence": "No x402, MPP or L402 in the docs, llms.txt or the source (checked 2026-10-14).",
        "endpoints": []
      },
      "toolCount": null,
      "popularity": {
        "githubStars": 34542,
        "npmWeekly": 1807038,
        "pypiWeekly": 6884385,
        "asOf": "2026-10-14"
      },
      "docsUrl": "https://www.selenium.dev/documentation/",
      "llmsTxt": "https://www.selenium.dev/llms.txt",
      "capabilities": [
        "browser.control",
        "browser.debug"
      ],
      "tags": [
        "official",
        "local",
        "open-source",
        "browser",
        "sdk",
        "python",
        "java",
        "javascript",
        "dotnet",
        "ruby",
        "llms-txt",
        "no-auth",
        "webdriver"
      ],
      "lastRelease": "2026-10-09",
      "graded": true,
      "anchor": {
        "graded": true,
        "score": 73.6,
        "grade": "BB",
        "agentReady": true,
        "rank": 90,
        "ranked": true,
        "rankOf": 1076,
        "categoryRank": 4,
        "methodology": "0.4",
        "run": "2026-10-01",
        "scores": {
          "ergonomics": 70,
          "maintenance": 94,
          "payments": 60,
          "reliability": 90,
          "schema": 89,
          "security": 43,
          "transparency": 74
        },
        "pending": [
          "performance",
          "tasks"
        ],
        "assessment": {
          "confidence": "medium",
          "date": "2026-10-14"
        },
        "negative": 0,
        "verdict": "Selenium is stable, Apache-2.0 software on 4.51.0 with bindings in five languages, CI passing on trunk, an llms.txt and an agent guide added in September 2026. It has no MCP server of its own, Selenium Manager sends usage statistics by default, and Grid accepts unauthenticated sessions unless a username and password are set.",
        "bestFor": "Agents that write test or automation scripts in any of five languages, and teams with a Grid.",
        "strengths": [
          "Official bindings for Java, Python, C#, Ruby and JavaScript, released together, 4.51.0 on 9 October 2026",
          "llms.txt and a page on using AI coding agents with Selenium, last changed 28 September 2026",
          "Code samples in the docs are run in CI against current releases",
          "An error page per common exception, such as `StaleElementReferenceException`, gives causes and fixes",
          "The 15 most recent CI runs on trunk, 13 October 2026, all succeeded or were cancelled"
        ],
        "weaknesses": [
          "No MCP server from the project. The docs point to community servers and say they are third-party",
          "Selenium Manager sends anonymised usage statistics to Plausible once a day by default, until `SE_AVOID_STATS=true` is set",
          "Grid has no authentication unless `--username` and `--password` are both set",
          "The project says it does not follow semantic versioning, and removes deprecated APIs in minor releases",
          "No accessibility snapshot call, so agents read page source or query elements one by one"
        ],
        "agentNotes": [
          "Install with `pip install selenium` (Python 3.10 or later) and let Selenium Manager fetch drivers. Do not set driver paths",
          "Use `WebDriverWait` with expected conditions, never fixed sleeps, and do not mix implicit and explicit waits",
          "Set `SE_AVOID_STATS=true` to stop Selenium Manager sending usage statistics",
          "Point coding agents at https://www.selenium.dev/llms.txt. Most Selenium 2 and 3 era examples use removed APIs",
          "Set `--username` and `--password` before exposing a Grid beyond localhost. Check `http://localhost:4444/status` before creating sessions"
        ],
        "metrics": {
          "kind": "local",
          "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": 73.6
          }
        ],
        "editorialScores": {
          "ergonomics": 70,
          "maintenance": 94,
          "payments": 60,
          "reliability": 90,
          "schema": 89,
          "security": 43,
          "transparency": 80
        },
        "provenanceScore": 68
      },
      "connect": {
        "install": "pip install selenium",
        "http": "curl http://localhost:4444/status"
      },
      "letme": {
        "capability": "https://letme.dev/browser.control",
        "tool": "https://letme.dev/selenium"
      },
      "area": "developer",
      "provenance": {
        "legalEntity": "Software Freedom Conservancy",
        "domain": "selenium.dev",
        "domainRegistered": "2019-02-22",
        "domainNote": "NOTICE reads Copyright 2011-2026 Software Freedom Conservancy, which holds the project. RDAP gives selenium.dev a registration date of 22 February 2019. selenium.dev answers 404 for /.well-known/security.txt. Security reports go to security@seleniumhq.org.",
        "endpointOnVendorDomain": null,
        "terms": "",
        "privacy": "",
        "statusPage": "",
        "changelog": "https://github.com/SeleniumHQ/selenium/blob/trunk/py/CHANGES",
        "securityTxt": "none",
        "checked": "2026-10-14",
        "notes": [
          "No terms or privacy document governs this software beyond the Apache-2.0 licence, so `terms` and `privacy` are left out. selenium.dev has no privacy page (/privacy/ answers 404). Selenium Manager's data collection is described in its documentation page.",
          "Each binding keeps its own changelog. The Python one is linked, and the downloads page links the others.",
          "selenium.dev's robots.txt names all user agents with no Disallow lines, so every page was read."
        ],
        "score": 68
      },
      "pageJsonUrl": "https://www.anchorterminal.com/tools/selenium.json"
    },
    "facts": [
      {
        "a": "HTTP API",
        "b": "SDK + MCP",
        "name": "Kind"
      },
      {
        "a": "browserless.io, Inc.",
        "b": "Selenium project (Software Freedom Conservancy)",
        "name": "Vendor"
      },
      {
        "a": "https://production-sfo.browserless.io",
        "b": "no (local only)",
        "name": "Hosted endpoint"
      },
      {
        "a": "HTTP, Streamable HTTP, stdio",
        "b": "HTTP",
        "name": "Transports"
      },
      {
        "a": "OAuth or key",
        "b": "None",
        "name": "Auth"
      },
      {
        "a": "Freemium",
        "b": "Free",
        "name": "Pricing"
      },
      {
        "a": "no",
        "b": "no",
        "name": "x402"
      },
      {
        "a": "SSPL 1.0 or a commercial licence for the core server and the MCP server. The BAP TypeScript SDK is MIT. BrowserQL, stealth and other cloud additions are proprietary",
        "b": "Apache-2.0",
        "name": "Licence"
      },
      {
        "a": "14",
        "b": "none",
        "name": "Tools exposed"
      },
      {
        "a": "yes",
        "b": "no",
        "name": "Read-only variant documented"
      },
      {
        "a": "yes",
        "b": "yes",
        "name": "llms.txt"
      },
      {
        "a": "2026-10-05",
        "b": "2026-10-09",
        "name": "Last release"
      },
      {
        "a": "no date given",
        "b": "no document linked",
        "name": "Terms last updated"
      },
      {
        "a": "no date given",
        "b": "no document linked",
        "name": "Privacy policy last updated"
      },
      {
        "a": "not found in the text",
        "b": "",
        "name": "Customer content may train models"
      },
      {
        "a": "yes",
        "b": "",
        "name": "Terms restrict automated access"
      },
      {
        "a": "not found in the text",
        "b": "",
        "name": "Terms restrict benchmarking"
      },
      {
        "a": "yes",
        "b": "",
        "name": "Terms or service can change without notice"
      },
      {
        "a": "not found in the text",
        "b": "",
        "name": "Arbitration or class-action waiver"
      },
      {
        "a": "14k stars, 3.5k npm/wk",
        "b": "35k stars, 1.8M npm/wk, 6.9M PyPI/wk",
        "name": "Popularity"
      }
    ],
    "faq": [
      {
        "answer": "Selenium scores 73.6 (BB) on agent readiness against Browserless's 70.4 (BB), and leads in 4 of 7 scored categories. Browserless leads on agent ergonomics and security \u0026 auth.",
        "question": "Which is better for AI agents, Browserless or Selenium?"
      },
      {
        "answer": "Browserless has a hosted endpoint at https://production-sfo.browserless.io. No hosted endpoint is listed for Selenium.",
        "question": "Can an agent call Browserless and Selenium without installing anything?"
      },
      {
        "answer": "No open-source release is listed for Browserless. Selenium is open source (Apache-2.0).",
        "question": "Are Browserless and Selenium open source?"
      }
    ],
    "goodFor": [
      {
        "aheadOn": [
          "Agent ergonomics, 78 against 70",
          "Security \u0026 auth, 53 against 43"
        ],
        "also": [
          "A hosted endpoint, with nothing to install",
          "Runs on your own machine",
          "Free to start without a card"
        ],
        "goodFor": "Agents that need a real browser in the cloud with stealth, proxies and CAPTCHA solving, and teams that want the option of running the same server themselves.",
        "slug": "browserless",
        "watchFor": "REST and WebSocket routes take the API token as `?token=` in the URL, which the docs give as the standard method"
      },
      {
        "aheadOn": [
          "Reliability, 90 against 82",
          "Payments \u0026 pricing, 60 against 40",
          "Maintenance \u0026 community, 94 against 82",
          "Transparency \u0026 trust, 74 against 62"
        ],
        "also": [
          "No key needed to call it",
          "Open source"
        ],
        "goodFor": "Agents that write test or automation scripts in any of five languages, and teams with a Grid.",
        "slug": "selenium",
        "watchFor": "No MCP server from the project. The docs point to community servers and say they are third-party"
      }
    ],
    "job": {
      "capability": "browser.control",
      "name": "Browser automation"
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        "url": "https://www.anchorterminal.com/compare/agent-browser-vs-browserless"
      },
      {
        "json": "https://www.anchorterminal.com/compare/agent-browser-vs-selenium.json",
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        "url": "https://www.anchorterminal.com/compare/agent-browser-vs-selenium"
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      {
        "json": "https://www.anchorterminal.com/compare/anchor-browser-vs-browserless.json",
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        "title": "Anchor Browser vs Selenium",
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        "json": "https://www.anchorterminal.com/compare/browser-use-vs-browserless.json",
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      {
        "json": "https://www.anchorterminal.com/compare/browserless-vs-chrome-devtools-mcp.json",
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        "json": "https://www.anchorterminal.com/compare/browserless-vs-hyperbrowser.json",
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        "url": "https://www.anchorterminal.com/compare/browserless-vs-hyperbrowser"
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      {
        "json": "https://www.anchorterminal.com/compare/browserless-vs-notte.json",
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        "json": "https://www.anchorterminal.com/compare/browserless-vs-puppeteer.json",
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        "json": "https://www.anchorterminal.com/compare/browserless-vs-skyvern.json",
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        "json": "https://www.anchorterminal.com/compare/browserless-vs-steel.json",
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      {
        "json": "https://www.anchorterminal.com/compare/browserless-vs-tinyfish.json",
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        "url": "https://www.anchorterminal.com/compare/browserless-vs-tinyfish"
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      {
        "json": "https://www.anchorterminal.com/compare/chrome-devtools-mcp-vs-selenium.json",
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      {
        "json": "https://www.anchorterminal.com/compare/notte-vs-selenium.json",
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    "scores": [
      {
        "browserless": 82,
        "by": 8,
        "edge": "selenium",
        "key": "reliability",
        "name": "Reliability",
        "selenium": 90,
        "weight": 16
      },
      {
        "key": "performance",
        "name": "Performance",
        "pending": true,
        "weight": 10
      },
      {
        "browserless": 89,
        "by": 0,
        "edge": "",
        "key": "schema",
        "name": "Schema \u0026 documentation",
        "selenium": 89,
        "weight": 13
      },
      {
        "browserless": 78,
        "by": 8,
        "edge": "browserless",
        "key": "ergonomics",
        "name": "Agent ergonomics",
        "selenium": 70,
        "weight": 13
      },
      {
        "browserless": 53,
        "by": 10,
        "edge": "browserless",
        "key": "security",
        "name": "Security \u0026 auth",
        "selenium": 43,
        "weight": 14
      },
      {
        "browserless": 40,
        "by": 20,
        "edge": "selenium",
        "key": "payments",
        "name": "Payments \u0026 pricing",
        "selenium": 60,
        "weight": 10
      },
      {
        "key": "tasks",
        "name": "Task success",
        "pending": true,
        "weight": 10
      },
      {
        "browserless": 82,
        "by": 12,
        "edge": "selenium",
        "key": "maintenance",
        "name": "Maintenance \u0026 community",
        "selenium": 94,
        "weight": 7
      },
      {
        "browserless": 62,
        "by": 12,
        "edge": "selenium",
        "key": "transparency",
        "name": "Transparency \u0026 trust",
        "selenium": 74,
        "weight": 7
      }
    ],
    "summary": "Selenium scores 73.6 (BB) on agent readiness against Browserless's 70.4 (BB), and leads in 4 of 7 scored categories. Browserless leads on agent ergonomics and security \u0026 auth. Both do browser automation.",
    "verdicts": {
      "browserless": "An OpenAPI document, llms.txt and a 14-tool MCP server with annotations on every tool make the service easy for an agent to read, and the free plan needs no card. The API token travels in the URL query string by default, cloud tokens carry no scopes, and no machine payment route exists.",
      "selenium": "Selenium is stable, Apache-2.0 software on 4.51.0 with bindings in five languages, CI passing on trunk, an llms.txt and an agent guide added in September 2026. It has no MCP server of its own, Selenium Manager sends usage statistics by default, and Grid accepts unauthenticated sessions unless a username and password are set."
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  "markdown": "Selenium scores 73.6 (BB) on agent readiness against Browserless's 70.4 (BB), and leads in 4 of 7 scored categories. Browserless leads on agent ergonomics and security \u0026 auth. Both do browser automation.\n\n- Browserless: grade BB, 70.4/100, rank #158 of 1076. Markdown https://www.anchorterminal.com/tools/browserless.md · JSON https://www.anchorterminal.com/api/v1/tools/browserless.json\n- Selenium: grade BB, 73.6/100, rank #90 of 1076. Markdown https://www.anchorterminal.com/tools/selenium.md · JSON https://www.anchorterminal.com/api/v1/tools/selenium.json\n- Best browser automation tools for AI agents: https://www.anchorterminal.com/best/browser/index.md\n- All 120 browser comparisons: https://www.anchorterminal.com/compare/browser/index.md\n\n## Which one, for what\n\n### Browserless (BB)\n\nGood for: Agents that need a real browser in the cloud with stealth, proxies and CAPTCHA solving, and teams that want the option of running the same server themselves.\n\nAhead on:\n- Agent ergonomics, 78 against 70\n- Security \u0026 auth, 53 against 43\n\nAlso in its favour:\n- A hosted endpoint, with nothing to install\n- Runs on your own machine\n- Free to start without a card\n\nWatch for: REST and WebSocket routes take the API token as `?token=` in the URL, which the docs give as the standard method\n\n### Selenium (BB)\n\nGood for: Agents that write test or automation scripts in any of five languages, and teams with a Grid.\n\nAhead on:\n- Reliability, 90 against 82\n- Payments \u0026 pricing, 60 against 40\n- Maintenance \u0026 community, 94 against 82\n- Transparency \u0026 trust, 74 against 62\n\nAlso in its favour:\n- No key needed to call it\n- Open source\n\nWatch for: No MCP server from the project. The docs point to community servers and say they are third-party\n\n\n## Score by category\n\n| Category | Weight | Browserless | Selenium | Edge |\n| --- | --- | --- | --- | --- |\n| Reliability | 16% (20 this run) | 82 | 90 | Selenium +8 |\n| Performance | 10%, pending | pending | pending | not scored in this run |\n| Schema \u0026 documentation | 13% (16.2 this run) | 89 | 89 | even |\n| Agent ergonomics | 13% (16.2 this run) | 78 | 70 | Browserless +8 |\n| Security \u0026 auth | 14% (17.5 this run) | 53 | 43 | Browserless +10 |\n| Payments \u0026 pricing | 10% (12.5 this run) | 40 | 60 | Selenium +20 |\n| Task success | 10%, pending | pending | pending | not scored in this run |\n| Maintenance \u0026 community | 7% (8.8 this run) | 82 | 94 | Selenium +12 |\n| Transparency \u0026 trust | 7% (8.8 this run) | 62 | 74 | Selenium +12 |\n| Negative events | ≤15 | 0 | 0 | |\n| **Total** | | **70.4 · BB** | **73.6 · BB** | |\n\n## Facts side by side\n\n| Fact | Browserless | Selenium |\n| --- | --- | --- |\n| Kind | HTTP API | SDK + MCP |\n| Vendor | browserless.io, Inc. | Selenium project (Software Freedom Conservancy) |\n| Hosted endpoint | `https://production-sfo.browserless.io` | no (local only) |\n| Transports | HTTP, Streamable HTTP, stdio | HTTP |\n| Auth | OAuth or key | None |\n| Pricing | Freemium | Free |\n| x402 | no | no |\n| Licence | SSPL 1.0 or a commercial licence for the core server and the MCP server. The BAP TypeScript SDK is MIT. BrowserQL, stealth and other cloud additions are proprietary | Apache-2.0 |\n| Tools exposed | 14 | none |\n| Read-only variant documented | yes | no |\n| llms.txt | yes | yes |\n| Last release | 2026-10-05 | 2026-10-09 |\n| Terms last updated | no date given | no document linked |\n| Privacy policy last updated | no date given | no document linked |\n| Customer content may train models | not found in the text |  |\n| Terms restrict automated access | yes |  |\n| Terms restrict benchmarking | not found in the text |  |\n| Terms or service can change without notice | yes |  |\n| Arbitration or class-action waiver | not found in the text |  |\n| Popularity | 14k stars, 3.5k npm/wk | 35k stars, 1.8M npm/wk, 6.9M PyPI/wk |\n\n## Verdicts\n\n**Browserless.** An OpenAPI document, llms.txt and a 14-tool MCP server with annotations on every tool make the service easy for an agent to read, and the free plan needs no card. The API token travels in the URL query string by default, cloud tokens carry no scopes, and no machine payment route exists.\n\n**Selenium.** Selenium is stable, Apache-2.0 software on 4.51.0 with bindings in five languages, CI passing on trunk, an llms.txt and an agent guide added in September 2026. It has no MCP server of its own, Selenium Manager sends usage statistics by default, and Grid accepts unauthenticated sessions unless a username and password are set.\n\n## Before you call either\n\n### Browserless\n\n1. Send the token as `Authorization: Bearer` to the MCP server. On REST and WebSocket routes it goes in `?token=`, so keep those URLs out of logs\n2. Close sessions as soon as the work is done. Browser time bills one unit per 30 seconds, rounded up, idle or not\n3. For multi-step work with `browserless_agent`, set `keepSessionAlive: true` on the first call and pass the returned `sessionId` after that. Sessions are one-shot by default since server 1.33.0\n4. On 429, back off and retry. It means the plan's concurrency limit or queue is full, usually from sessions left open\n5. Match the path to the protocol. Use `/chromium` for CDP clients and `/chromium/playwright` only for `playwright.connect()`\n\n### Selenium\n\n1. Install with `pip install selenium` (Python 3.10 or later) and let Selenium Manager fetch drivers. Do not set driver paths\n2. Use `WebDriverWait` with expected conditions, never fixed sleeps, and do not mix implicit and explicit waits\n3. Set `SE_AVOID_STATS=true` to stop Selenium Manager sending usage statistics\n4. Point coding agents at https://www.selenium.dev/llms.txt. Most Selenium 2 and 3 era examples use removed APIs\n5. Set `--username` and `--password` before exposing a Grid beyond localhost. Check `http://localhost:4444/status` before creating sessions\n\n## Questions\n\n### Which is better for AI agents, Browserless or Selenium?\n\nSelenium scores 73.6 (BB) on agent readiness against Browserless's 70.4 (BB), and leads in 4 of 7 scored categories. Browserless leads on agent ergonomics and security \u0026 auth.\n\n### Can an agent call Browserless and Selenium without installing anything?\n\nBrowserless has a hosted endpoint at https://production-sfo.browserless.io. No hosted endpoint is listed for Selenium.\n\n### Are Browserless and Selenium open source?\n\nNo open-source release is listed for Browserless. Selenium is open source (Apache-2.0).\n\n\n## For agents\n\n- This comparison as JSON: https://www.anchorterminal.com/compare/browserless-vs-selenium.json, and with the fewest tokens: https://www.anchorterminal.com/compare/browserless-vs-selenium.min.md\n- Over MCP at https://www.anchorterminal.com/mcp (no key): `compare_tools {\"a\": \"browserless\", \"b\": \"selenium\"}`. From a terminal: `anchor compare browserless selenium`\n- Each listing in full: https://www.anchorterminal.com/api/v1/tools/browserless.json and https://www.anchorterminal.com/api/v1/tools/selenium.json\n\n## Other comparisons with Browserless or Selenium\n\n- [agent-browser vs Browserless](https://www.anchorterminal.com/compare/agent-browser-vs-browserless.md)\n- [agent-browser vs Selenium](https://www.anchorterminal.com/compare/agent-browser-vs-selenium.md)\n- [Airtop vs Browserless](https://www.anchorterminal.com/compare/airtop-vs-browserless.md)\n- [Airtop vs Selenium](https://www.anchorterminal.com/compare/airtop-vs-selenium.md)\n- [Anchor Browser vs Browserless](https://www.anchorterminal.com/compare/anchor-browser-vs-browserless.md)\n- [Anchor Browser vs Selenium](https://www.anchorterminal.com/compare/anchor-browser-vs-selenium.md)\n- [Browser Use vs Browserless](https://www.anchorterminal.com/compare/browser-use-vs-browserless.md)\n- [Browser Use vs Selenium](https://www.anchorterminal.com/compare/browser-use-vs-selenium.md)\n- [Browserbase vs Selenium](https://www.anchorterminal.com/compare/browserbase-vs-selenium.md)\n- [Browserless vs Chrome DevTools MCP](https://www.anchorterminal.com/compare/browserless-vs-chrome-devtools-mcp.md)\n- [Browserless vs Hyperbrowser](https://www.anchorterminal.com/compare/browserless-vs-hyperbrowser.md)\n- [Browserless vs Notte](https://www.anchorterminal.com/compare/browserless-vs-notte.md)\n- [Browserless vs Playwright MCP](https://www.anchorterminal.com/compare/browserless-vs-playwright-mcp.md)\n- [Browserless vs Puppeteer](https://www.anchorterminal.com/compare/browserless-vs-puppeteer.md)\n- [Browserless vs Puppeteer (archived MCP reference server)](https://www.anchorterminal.com/compare/browserless-vs-puppeteer-reference-server-archived.md)\n- [Browserless vs Skyvern](https://www.anchorterminal.com/compare/browserless-vs-skyvern.md)\n- [Browserless vs Steel](https://www.anchorterminal.com/compare/browserless-vs-steel.md)\n- [Browserless vs TinyFish](https://www.anchorterminal.com/compare/browserless-vs-tinyfish.md)\n- [Chrome DevTools MCP vs Selenium](https://www.anchorterminal.com/compare/chrome-devtools-mcp-vs-selenium.md)\n- [Hyperbrowser vs Selenium](https://www.anchorterminal.com/compare/hyperbrowser-vs-selenium.md)\n- [Notte vs Selenium](https://www.anchorterminal.com/compare/notte-vs-selenium.md)\n- [Playwright MCP vs Selenium](https://www.anchorterminal.com/compare/playwright-mcp-vs-selenium.md)\n- [Puppeteer (archived MCP reference server) vs Selenium](https://www.anchorterminal.com/compare/puppeteer-reference-server-archived-vs-selenium.md)\n- [Puppeteer vs Selenium](https://www.anchorterminal.com/compare/puppeteer-vs-selenium.md)\n- [Selenium vs Skyvern](https://www.anchorterminal.com/compare/selenium-vs-skyvern.md)\n- [Selenium vs Steel](https://www.anchorterminal.com/compare/selenium-vs-steel.md)\n- [Selenium vs TinyFish](https://www.anchorterminal.com/compare/selenium-vs-tinyfish.md)\n- [Browserbase vs Browserless](https://www.anchorterminal.com/compare/browserbase-vs-browserless.md)\n",
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