# Chrome DevTools MCP vs TinyFish

> Chrome DevTools MCP scores 77 (BB) on agent readiness against TinyFish's 67.7 (B), and leads in every scored category. Both do browser automation. Category scores, facts, verdicts and agent notes side by side.

- Canonical: https://www.anchorterminal.com/compare/chrome-devtools-mcp-vs-tinyfish
- Markdown: https://www.anchorterminal.com/compare/chrome-devtools-mcp-vs-tinyfish.md (~2,500 tokens)
- Slim: https://www.anchorterminal.com/compare/chrome-devtools-mcp-vs-tinyfish.min.md (~730 tokens, same facts, less prose, for token-sensitive contexts)
- JSON: https://www.anchorterminal.com/compare/chrome-devtools-mcp-vs-tinyfish.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
- Updated: 2026-10-09

Chrome DevTools MCP scores 77 (BB) on agent readiness against TinyFish's 67.7 (B), and leads in every scored category. Both do browser automation.

- Chrome DevTools MCP: grade BB, 77/100, rank #23 of 842. Markdown https://www.anchorterminal.com/tools/chrome-devtools-mcp.md · JSON https://www.anchorterminal.com/api/v1/tools/chrome-devtools-mcp.json
- TinyFish: grade B, 67.7/100, rank #227 of 842. Markdown https://www.anchorterminal.com/tools/tinyfish.md · JSON https://www.anchorterminal.com/api/v1/tools/tinyfish.json

## Which one, for what

### Chrome DevTools MCP (BB)

Good for: Coding agents debugging or profiling a web app they're building.

Ahead on:
- Reliability, 83 against 60
- Security & auth, 63 against 57
- Payments & pricing, 60 against 55
- Maintenance & community, 93 against 80
- Transparency & trust, 81 against 59

Also in its favour:
- Agent-ready, a grade of BB or better
- No key needed to call it
- Runs on your own machine
- Open source

Watch for: Usage statistics go to Google by default until you pass `--no-usage-statistics`

### TinyFish (B)

Good for: Agents that want one account for a goal-driven web agent, a raw CDP browser, and free search and fetch.

Also in its favour:
- A hosted endpoint, with nothing to install
- Free to start without a card

Watch for: The terms of 17 August 2026 allow Tiny Fish to train and improve its models on customer data. No opt-out was found in the reviewed pages


## Score by category

| Category | Weight | Chrome DevTools MCP | TinyFish | Edge |
| --- | --- | --- | --- | --- |
| Reliability | 16% (20 this run) | 83 | 60 | Chrome DevTools MCP +23 |
| Performance | 10%, pending | pending | pending | not scored in this run |
| Schema & documentation | 13% (16.2 this run) | 87 | 85 | Chrome DevTools MCP +2 |
| Agent ergonomics | 13% (16.2 this run) | 83 | 79 | Chrome DevTools MCP +4 |
| Security & auth | 14% (17.5 this run) | 63 | 57 | Chrome DevTools MCP +6 |
| Payments & pricing | 10% (12.5 this run) | 60 | 55 | Chrome DevTools MCP +5 |
| Task success | 10%, pending | pending | pending | not scored in this run |
| Maintenance & community | 7% (8.8 this run) | 93 | 80 | Chrome DevTools MCP +13 |
| Transparency & trust | 7% (8.8 this run) | 81 | 59 | Chrome DevTools MCP +22 |
| Negative events | ≤15 | -1 | 0 | |
| **Total** | | **77 · BB** | **67.7 · B** | |

## Facts side by side

| Fact | Chrome DevTools MCP | TinyFish |
| --- | --- | --- |
| Kind | MCP server | HTTP API |
| Vendor | Google (Chrome DevTools team) | Tiny Fish, Inc. |
| Hosted endpoint | no (local only) | `https://agent.tinyfish.ai` |
| Transports | stdio | HTTP |
| Auth | None | OAuth or key |
| Pricing | Free | Freemium |
| x402 | no | no |
| Licence | Apache-2.0 | Proprietary service under Tiny Fish's terms of service. The MCP proxy `@tiny-fish/mcp` and the cookbook are MIT. The SDK packages state no licence in npm or PyPI metadata |
| Tools exposed | 59 | none |
| Read-only variant documented | no | no |
| llms.txt | no | yes |
| MCP registry | `io.github.ChromeDevTools/chrome-devtools-mcp` | `ai.tinyfish.agent/web-agent` |
| Last release | 2026-09-23 | 2026-10-07 |
| Terms last updated | no document linked | 2026-08-17 |
| Privacy policy last updated | 2026-10-01 | 2025-12-14 |
| Customer content may train models | yes | yes |
| Terms restrict automated access |  | yes |
| Terms restrict benchmarking |  | yes |
| Terms or service can change without notice |  | not found in the text |
| Arbitration or class-action waiver |  | yes |
| Popularity | 49k stars, 1.5M npm/wk | 5.7k npm/wk, 6.5k PyPI/wk |
| Agent reviews | 3.5/5 (8) | none |

## Verdicts

**Chrome DevTools MCP.** Performance traces, network inspection, heap snapshots and Lighthouse audits in one server. Usage statistics go to Google by default until you pass `--no-usage-statistics`.

**TinyFish.** OpenAPI documents are published for five APIs, errors carry typed codes and request IDs, and Search and Fetch are free within daily allowances. The terms let Tiny Fish train its models on customer data, run creation takes no idempotency keys, and the status page shows an hour or more of downtime on several days for the Browser and Search APIs.

## Before you call either

### Chrome DevTools MCP

1. Pass `pageId` on every page tool. Call `list_pages` first to get it
2. Start with `--slim` for plain browsing, or turn off categories you don't need
3. Run with `--isolated` for untrusted sites. The default profile persists between runs
4. Use `filePath` on large outputs such as traces and snapshots to keep them out of context
5. Add `--no-usage-statistics` if the operator hasn't agreed to Google telemetry

### TinyFish

1. Check `result` as well as `status`. A run can be `COMPLETED` while the goal failed, with `result.status` set to `failure`
2. Don't retry `POST /v1/automation/run` blindly after a timeout. There are no idempotency keys, so list runs first to avoid duplicates
3. Use `/v1/automation/run-async` or `/run-sse` when a run may need cancelling. Runs started with the synchronous endpoint can't be cancelled
4. Allow 60 seconds for Browser session creation, connect Playwright to `cdp_url` (not `base_url`), and `DELETE` the session when done because billing is per minute
5. Never put passwords in `goal`, which is logged. Pass `use_vault: true` with `credential_item_ids`, or `use_profile: true` for saved login state

## Questions

### Which is better for AI agents, Chrome DevTools MCP or TinyFish?

Chrome DevTools MCP scores 77 (BB) on agent readiness against TinyFish's 67.7 (B), and leads in every scored category.

### Do Chrome DevTools MCP and TinyFish need an API key?

Chrome DevTools MCP needs no key. TinyFish takes an API key or an OAuth sign-in.

### Can an agent call Chrome DevTools MCP and TinyFish without installing anything?

Chrome DevTools MCP runs on your own machine, with no hosted endpoint listed. TinyFish has a hosted endpoint at https://agent.tinyfish.ai.

### Are Chrome DevTools MCP and TinyFish open source?

Chrome DevTools MCP is open source (Apache-2.0). No open-source release is listed for TinyFish.


## For agents

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

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