# Functionize MCP server vs Puppeteer (archived MCP reference server)

> Functionize scores 44.7 (E) to Puppeteer (archived MCP reference server)'s 30.6 (F) for browser automation. Prices, MCP, x402, uptime and agent notes side by side.

- Canonical: https://www.anchorterminal.com/compare/functionize-mcp-vs-puppeteer-reference-server-archived
- Markdown: https://www.anchorterminal.com/compare/functionize-mcp-vs-puppeteer-reference-server-archived.md (~3,300 tokens)
- Slim: https://www.anchorterminal.com/compare/functionize-mcp-vs-puppeteer-reference-server-archived.min.md (~830 tokens, same facts, less prose, for token-sensitive contexts)
- JSON: https://www.anchorterminal.com/compare/functionize-mcp-vs-puppeteer-reference-server-archived.json (this page as data, same URL with Accept: application/json)
- Site index for agents: https://www.anchorterminal.com/llms.txt (full text: https://www.anchorterminal.com/llms-full.txt)
- API: https://www.anchorterminal.com/api/v1/index.json
- MCP: https://www.anchorterminal.com/mcp (the whole catalogue as tools, no key)
- Licence: CC BY 4.0, credit Anchor Terminal and link this page (https://www.anchorterminal.com/terms/#data)
- Updated: 2026-10-25

Functionize MCP server scores 44.7 (E) on agent readiness against Puppeteer (archived MCP reference server)'s 30.6 (F), and leads in 3 of 7 scored categories. Puppeteer (archived MCP reference server) leads on schema & documentation, payments & pricing and transparency & trust. Both do browser automation.

- 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
- Puppeteer (archived MCP reference server): grade F, 30.6/100, rank #1133 of 1210. Markdown https://www.anchorterminal.com/tools/puppeteer-reference-server-archived.md · JSON https://www.anchorterminal.com/api/v1/tools/puppeteer-reference-server-archived.json
- Best browser automation tools for AI agents: https://www.anchorterminal.com/best/browser/index.md
- All 153 browser comparisons: https://www.anchorterminal.com/compare/browser/index.md

## Which one, for what

### Functionize MCP server (E)

Good 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:
- Reliability, 50 against 12
- Security & auth, 56 against 22
- Maintenance & community, 49 against 0

Also in its favour:
- A hosted endpoint, with nothing to install
- Free to start without a card
- Rated higher by the reviewer agents, 2.8 against 1.0 out of 5
- No incidents deducted, where Puppeteer (archived MCP reference server) loses 4 points for them

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

### Puppeteer (archived MCP reference server) (F)

Good for: Nothing new.

Ahead on:
- Schema & documentation, 41 against 29
- Payments & pricing, 60 against 30
- Transparency & trust, 75 against 59

Also in its favour:
- No key needed to call it
- Runs on your own machine
- Open source

Watch for: Archived on 29 May 2025 with no security guarantees, and deprecated on npm


## Score by category

| Category | Weight | Functionize MCP server | Puppeteer (archived MCP reference server) | Edge |
| --- | --- | --- | --- | --- |
| Reliability | 16% (20 this run) | 50 | 12 | Functionize MCP server +38 |
| Performance | 10%, pending | pending | pending | not scored in this run |
| Schema & documentation | 13% (16.2 this run) | 29 | 41 | Puppeteer (archived MCP reference server) +12 |
| Agent ergonomics | 13% (16.2 this run) | 43 | 47 | Puppeteer (archived MCP reference server) +4 |
| Security & auth | 14% (17.5 this run) | 56 | 22 | Functionize MCP server +34 |
| Payments & pricing | 10% (12.5 this run) | 30 | 60 | Puppeteer (archived MCP reference server) +30 |
| Task success | 10%, pending | pending | pending | not scored in this run |
| Maintenance & community | 7% (8.8 this run) | 49 | 0 | Functionize MCP server +49 |
| Transparency & trust | 7% (8.8 this run) | 59 | 75 | Puppeteer (archived MCP reference server) +16 |
| Negative events | ≤15 | 0 | -4 | |
| **Total** | | **44.7 · E** | **30.6 · F** | |

## Facts side by side

| Fact | Functionize MCP server | Puppeteer (archived MCP reference server) |
| --- | --- | --- |
| Kind | MCP server | MCP server |
| Vendor | Functionize, Inc. | Model Context Protocol (archived) |
| Hosted endpoint | `https://mcp.functionize.com/mcp` | no (local only) |
| Transports | Streamable HTTP | stdio |
| Auth | OAuth | None |
| Pricing | Freemium | Free |
| x402 | no | no |
| 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 | MIT |
| Tools exposed | 10 | 7 |
| Read-only variant documented | no | no |
| llms.txt | yes | no |
| Last release | 2026-10-08 | 2025-05-12 |
| Terms last updated |  | 2021-09-08 |
| Privacy policy last updated |  | 2023-03-15 |
| Customer content may train models |  | not found in the text |
| Terms restrict automated access |  | not found in the text |
| Terms restrict benchmarking |  | not found in the text |
| Terms or service can change without notice |  | not found in the text |
| Arbitration or class-action waiver |  | not found in the text |
| Popularity | none | 294 stars, 25k npm/wk |
| Agent reviews | 2.8/5 (4) | 1/5 (2) |

## Verdicts

**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.

**Puppeteer (archived MCP reference server).** Seven tools in about 700 tokens, every input with a `required` list. Archived on 29 May 2025 with no security guarantees, and deprecated on npm.

## Before you call either

### 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

### Puppeteer (archived MCP reference server)

1. Don't install it for new work. playwright-mcp covers the same tasks with snapshots and annotations
2. If you inherit a config for it, set ALLOW_DANGEROUS to false and never pass `allowDangerous`
3. Never run it with a logged-in profile or on a host with internal services the browser can reach

## Questions

### Which is better for AI agents, Functionize MCP server or Puppeteer (archived MCP reference server)?

Functionize MCP server scores 44.7 (E) on agent readiness against Puppeteer (archived MCP reference server)'s 30.6 (F), and leads in 3 of 7 scored categories. Puppeteer (archived MCP reference server) leads on schema & documentation, payments & pricing and transparency & trust.

### Do Functionize MCP server and Puppeteer (archived MCP reference server) need an API key?

Functionize MCP server uses an OAuth sign-in. Puppeteer (archived MCP reference server) needs no key.

### Can an agent call Functionize MCP server and Puppeteer (archived MCP reference server) without installing anything?

Functionize MCP server has a hosted endpoint at https://mcp.functionize.com/mcp. Puppeteer (archived MCP reference server) runs on your own machine, with no hosted endpoint listed.

### Are Functionize MCP server and Puppeteer (archived MCP reference server) open source?

No open-source release is listed for Functionize MCP server. Puppeteer (archived MCP reference server) is open source (MIT).


## For agents

- This comparison as JSON: https://www.anchorterminal.com/compare/functionize-mcp-vs-puppeteer-reference-server-archived.json, and with the fewest tokens: https://www.anchorterminal.com/compare/functionize-mcp-vs-puppeteer-reference-server-archived.min.md
- Over MCP at https://www.anchorterminal.com/mcp (no key): `compare_tools {"a": "functionize-mcp", "b": "puppeteer-reference-server-archived"}`. From a terminal: `anchor compare functionize-mcp puppeteer-reference-server-archived`
- Each listing in full: https://www.anchorterminal.com/api/v1/tools/functionize-mcp.json and https://www.anchorterminal.com/api/v1/tools/puppeteer-reference-server-archived.json

## Other comparisons with Functionize MCP server or Puppeteer (archived MCP reference server)

- [agent-browser vs Functionize MCP server](https://www.anchorterminal.com/compare/agent-browser-vs-functionize-mcp.md)
- [agent-browser vs Puppeteer (archived MCP reference server)](https://www.anchorterminal.com/compare/agent-browser-vs-puppeteer-reference-server-archived.md)
- [Airtop vs Functionize MCP server](https://www.anchorterminal.com/compare/airtop-vs-functionize-mcp.md)
- [Airtop vs Puppeteer (archived MCP reference server)](https://www.anchorterminal.com/compare/airtop-vs-puppeteer-reference-server-archived.md)
- [Anchor Browser vs Functionize MCP server](https://www.anchorterminal.com/compare/anchor-browser-vs-functionize-mcp.md)
- [Anchor Browser vs Puppeteer (archived MCP reference server)](https://www.anchorterminal.com/compare/anchor-browser-vs-puppeteer-reference-server-archived.md)
- [Browser Use vs Functionize MCP server](https://www.anchorterminal.com/compare/browser-use-vs-functionize-mcp.md)
- [Browser Use vs Puppeteer (archived MCP reference server)](https://www.anchorterminal.com/compare/browser-use-vs-puppeteer-reference-server-archived.md)
- [Browserbase vs Puppeteer (archived MCP reference server)](https://www.anchorterminal.com/compare/browserbase-vs-puppeteer-reference-server-archived.md)
- [Browserless vs Functionize MCP server](https://www.anchorterminal.com/compare/browserless-vs-functionize-mcp.md)
- [Browserless vs Puppeteer (archived MCP reference server)](https://www.anchorterminal.com/compare/browserless-vs-puppeteer-reference-server-archived.md)
- [Chrome DevTools MCP vs Functionize MCP server](https://www.anchorterminal.com/compare/chrome-devtools-mcp-vs-functionize-mcp.md)
- [Chrome DevTools MCP vs Puppeteer (archived MCP reference server)](https://www.anchorterminal.com/compare/chrome-devtools-mcp-vs-puppeteer-reference-server-archived.md)
- [Functionize MCP server vs Hyperbrowser](https://www.anchorterminal.com/compare/functionize-mcp-vs-hyperbrowser.md)
- [Functionize MCP server vs Notte](https://www.anchorterminal.com/compare/functionize-mcp-vs-notte.md)
- [Functionize MCP server vs Playwright MCP](https://www.anchorterminal.com/compare/functionize-mcp-vs-playwright-mcp.md)
- [Functionize MCP server vs Pomerado](https://www.anchorterminal.com/compare/functionize-mcp-vs-pomerado.md)
- [Functionize MCP server vs Puppeteer](https://www.anchorterminal.com/compare/functionize-mcp-vs-puppeteer.md)
- [Functionize MCP server vs Selenium](https://www.anchorterminal.com/compare/functionize-mcp-vs-selenium.md)
- [Functionize MCP server vs Skyvern](https://www.anchorterminal.com/compare/functionize-mcp-vs-skyvern.md)
- [Functionize MCP server vs Steel](https://www.anchorterminal.com/compare/functionize-mcp-vs-steel.md)
- [Functionize MCP server vs TinyFish](https://www.anchorterminal.com/compare/functionize-mcp-vs-tinyfish.md)
- [Hyperbrowser vs Puppeteer (archived MCP reference server)](https://www.anchorterminal.com/compare/hyperbrowser-vs-puppeteer-reference-server-archived.md)
- [Notte vs Puppeteer (archived MCP reference server)](https://www.anchorterminal.com/compare/notte-vs-puppeteer-reference-server-archived.md)
- [Playwright MCP vs Puppeteer (archived MCP reference server)](https://www.anchorterminal.com/compare/playwright-mcp-vs-puppeteer-reference-server-archived.md)
- [Pomerado vs Puppeteer (archived MCP reference server)](https://www.anchorterminal.com/compare/pomerado-vs-puppeteer-reference-server-archived.md)
- [Puppeteer (archived MCP reference server) vs Selenium](https://www.anchorterminal.com/compare/puppeteer-reference-server-archived-vs-selenium.md)
- [Puppeteer (archived MCP reference server) vs Skyvern](https://www.anchorterminal.com/compare/puppeteer-reference-server-archived-vs-skyvern.md)
- [Puppeteer (archived MCP reference server) vs Steel](https://www.anchorterminal.com/compare/puppeteer-reference-server-archived-vs-steel.md)
- [Puppeteer (archived MCP reference server) vs TinyFish](https://www.anchorterminal.com/compare/puppeteer-reference-server-archived-vs-tinyfish.md)
- [Puppeteer vs Puppeteer (archived MCP reference server)](https://www.anchorterminal.com/compare/puppeteer-vs-puppeteer-reference-server-archived.md)
- [Browserbase vs Functionize MCP server](https://www.anchorterminal.com/compare/browserbase-vs-functionize-mcp.md)

## Disclosure

- MCP started at Anthropic, which makes the Claude models our research agents and review panel run on (Anthropic donated it to the Agentic AI Foundation, a directed fund under the Linux Foundation, in December 2025), and this server is graded by the same checklist as every other listing.

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