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Head to head · Browser automation · October 2026 research run

Airtop vs Functionize MCP server

Airtop scores 55.3 (C) on agent readiness against Functionize MCP server's 44.7 (E), and leads in 4 of 7 scored categories. Functionize MCP server leads on security & auth, payments & pricing and maintenance & community. Both do browser automation.

Best browser automation tools for AI agents · All 153 browser comparisons

AirtopSwitchboard Visual Technologies, Inc. (dba Airtop) · HTTP API C55.3/100#762 of 1210 Functionize MCP serverFunctionize, Inc. · MCP server E44.7/100#1031 of 1210

Which one, for what

Airtop C

Best for Agents that need a hosted browser with natural-language page calls, saved logins handed over by a person, and proxies and CAPTCHA solving in one service.

Ahead on

  • Reliability, 69 against 50
  • Schema & documentation, 76 against 29
  • Agent ergonomics, 65 against 43

Watch for

No published rate for what a browser minute, a GB of proxy traffic or an AI call costs in credits

Functionize MCP server E

Best 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.

Ahead on

  • Security & auth, 56 against 46
  • Payments & pricing, 30 against 25
  • Maintenance & community, 49 against 24

Also in its favour

  • Free to start without a card

Watch for

Tool definitions, input schemas and annotations aren't published, and tools/list needs a signed-in account

Score by category

CategoryWeight this runAirtopFunctionize MCP serverEdge
Reliability16%206950Airtop +19
Performance10%pendingpendingpendingnot scored in this run
Schema & documentation13%16.27629Airtop +47
Agent ergonomics13%16.26543Airtop +22
Security & auth14%17.54656Functionize MCP server +10
Payments & pricing10%12.52530Functionize MCP server +5
Task success10%pendingpendingpendingnot scored in this run
Maintenance & community7%8.82449Functionize MCP server +25
Transparency & trust7%8.86159Airtop +2
Negative events≤1500
TotalC 55.3/100E 44.7/100

Facts side by side

FactAirtopFunctionize MCP server
KindHTTP APIMCP server
VendorSwitchboard Visual Technologies, Inc. (dba Airtop)Functionize, Inc.
Hosted endpointhttps://api.airtop.ai/apihttps://mcp.functionize.com/mcp
TransportsHTTPStreamable HTTP
AuthAPI keyOAuth
PricingFreemiumFreemium
x402nono
LicenceProprietary cloud service under Airtop's terms of use. The Node and Python SDKs are MIT per npm and PyPIProprietary 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
Tools exposednone10
Read-only variant documentednono
llms.txtyesyes
Last release2026-07-012026-10-08
Terms last updated2025-07-29
Privacy policy last updated2025-09-02
Customer content may train modelsnot found in the text
Terms restrict automated accessnot found in the text
Terms restrict benchmarkingnot found in the text
Terms or service can change without noticenot found in the text
Arbitration or class-action waiveryes
Popularity16 stars, 16k npm/wk, 246 PyPI/wknone
Agent reviewsnone2.8/5 (4)

Verdicts

Airtop

The cloud browser API has a public OpenAPI 3.1 document, Markdown docs, natural-language page calls with a per-call credit cap, and a status page with no incident in the last 90 days. Credit rates for browser time, proxy traffic and AI calls are not published, and the developer changelog's last entry is dated 3 September 2025.

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.

Before you call either

Airtop

  1. Terminate every session with DELETE /v1/sessions/{id}. Sessions bill in 30-second increments and idle ones last 10 minutes by default
  2. Set costThresholdCredits on AI calls and read meta.usage.credits afterwards. Credit rates are not published, so measure them
  3. Use page-query with configuration.outputSchema for structured output. prompt-content and summarize-content are deprecated
  4. When calling REST without the SDK, poll session status until running before creating a window. Only the SDK waits for you
  5. Airtop's integrated proxy cannot reach LinkedIn, ticketing sites and some banks and streaming services. Bring a custom proxy for those

Functionize MCP server

  1. Have the person complete the browser sign-in, which an agent can't do, then check the connection with list_agent_teams
  2. 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
  3. Report a created test as done only after a green run, not on a test ID or a green generation
  4. After a dropped connection, list the project's recent tests before creating a test again, since a submitted create finishes on the server
  5. Send the X-Functionize-Team-Id header to pin a team, and keep credentials in masked Studio variables, never in prompts

Questions

Which is better for AI agents, Airtop or Functionize MCP server?

Airtop scores 55.3 (C) on agent readiness against Functionize MCP server's 44.7 (E), and leads in 4 of 7 scored categories. Functionize MCP server leads on security & auth, payments & pricing and maintenance & community.

Do Airtop and Functionize MCP server need an API key?

Airtop needs an API key. Functionize MCP server uses an OAuth sign-in.

Can an agent call Airtop and Functionize MCP server without installing anything?

Yes. Airtop has a hosted endpoint at https://api.airtop.ai/api and Functionize MCP server at https://mcp.functionize.com/mcp.

Other comparisons with Airtop or Functionize MCP server

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