Perplexity CometBLOCK
MCP server connecting Claude Code to Perplexity Comet browser. Autonomous web browsing, agentic research, multi-tab management. Windows/WSL/macOS support. Smart completion detection, auto-reconnect, tab protection. Enhanced fork with 7 tools including comet_tabs.
Overview
From the repository's own README, as read at the audited commit. Badges and raw HTML are left out.
[](https://www.npmjs.com/package/perplexity-comet-mcp) [](https://opensource.org/licenses/MIT) [](https://nodejs.org) [](https://www.typescriptlang.org/) [](https://modelcontextprotocol.io/) []()
A production-grade MCP (Model Context Protocol) server that bridges Claude Code with Perplexity's Comet browser for autonomous web browsing, research, and multi-tab workflow management.
Why Perplexity Comet MCP?
This is a significantly enhanced fork of hanzili/comet-mcp with Windows support, smart completion detection, robust connection handling, and full tab management.
Features
Core Capabilities
- Autonomous Web Browsing - Comet navigates, clicks, types, and extracts data while Claude focuses on coding
- Deep Research Mode - Leverage Perplexity's research capabilities for comprehensive analysis
- Login Wall Handling - Access authenticated content through real browser sessions
- Dynamic Content - Full JavaScript rendering and interaction support
Enhanced Features (New in This Fork)
21356ef0c107OBSERVED · 2026-10-08Connect
Built from this server's own package name, version and transport as found in its source — not copied from anyone's documentation, so it cannot drift against a page we do not control. Replace the environment placeholders with a token scoped to the least it needs.
claude mcp add perplexity-comet-mcp -- npx -y [email protected]
Exposed tools (8)
5 read · 3 write · 0 destructive.
| Tool | Risk | Description |
|---|---|---|
comet_ask | write | Send a prompt and get response |
comet_connect | read | Connect to Comet browser |
comet_mode | read | Switch Perplexity mode |
comet_poll | read | Check agent status |
comet_screenshot | read | Capture screenshot |
comet_stop | write | Stop current task |
comet_tabs | read | Manage browser tabs |
comet_upload | write | Upload a file to a file input on the current page |
Trust audit
BLOCKgrade D · trust 69/100 Do not install this without reading the findings. The audit found something that could harm you or your machine.
| Layer | What it checks | Result |
|---|---|---|
| L0 | Provenance & inventory | PASS |
| L1 | Static analysis of the code | FAIL |
| L2 | Instruction surface (what it tells the agent) | PASS |
| L3 | Class-specific surface | PASS |
| L4 | Behavioural (sandbox) | SKIPPED |
What the source does
- Filesystem
- declared (5 observation(s))
- Network
- declared (8 observation(s))
- Shell
- declared (3 observation(s))
- Dependencies
- not all pinned
- Secrets in source
- none-found
Findings (21)
resolvePath(home, ".netrc"),
resolvePath(home, ".git-credentials"),
"/etc/shadow",
"/etc/sudoers",
"/etc/passwd",
`--remote-allow-origins=http://127.0.0.1`,
`http://127.0.0.1:${port}/json/version`,`http://127.0.0.1:${port}/json/version`,`http://127.0.0.1:${port}/json/version`,`http://127.0.0.1:${port}/json/version`,it("blocks ~/.ssh/id_rsa", () => {mockFile("/home/testuser/.ssh/id_rsa");expect(() => validateUploadPath("~/.ssh/id_rsa")).toThrow(/sensitive path/);mockFile("/etc/shadow");expect(() => validateUploadPath("/etc/shadow")).toThrow(/sensitive path/);} from "../../src/cdp-client.js";
import { captureScreenshotWithFallback } from "../../src/cdp-client.js";import { CometAI } from "../../src/comet-ai.js";import type { CometAIClient } from "../../../src/comet-ai.js";import type { CDPTarget, EvaluateResult } from "../../../src/types.js";@modelcontextprotocol/sdk, chrome-remote-interface, @types/chrome-remote-interface, @types/jsdom, @types/node, jsdom, typescript, vitest
Gates applied: no_behavioural_pass.
21356ef0c107full audit observations/trust-audit/mcp-server/rapiercraft__perplexity-comet.json · Report an issue / request a re-scanAudit history
Every audit this server has had. A grade with a past is a grade somebody is still checking.
| Date | Source | Verdict | Grade | Score | Change |
|---|---|---|---|---|---|
| 2026-10-08 | 21356ef0c107 | BLOCK | D | 69 | first audit |
Questions
What is the Perplexity Comet MCP server?
MCP server connecting Claude Code to Perplexity Comet browser. Autonomous web browsing, agentic research, multi-tab management. Windows/WSL/macOS support. Smart completion detection, auto-reconnect, tab protection. Enhanced fork with 7 tools including comet_tabs.
What tools does Perplexity Comet expose?
8 in total: 5 read-only, 3 that write, and 0 that can delete or overwrite. Every one is listed on this page with its risk.
Is Perplexity Comet safe to connect to an agent?
No — not without reading the findings first. The audit graded it D (69/100) and found 2 critical or high issues in the source. Each one is listed on this page with the file and line it is on.
What credentials does Perplexity Comet need?
It reads COMET_BRIDGE_TOKEN from the environment. Give it a token scoped to the least it needs — an agent that can be talked into calling a tool can be talked into calling it with your credentials.
How does Perplexity Comet run?
It speaks stdio, so it runs as a local process your client starts. It is published on npm as perplexity-comet-mcp at 2.6.2.
How current is this page?
The grade is for one exact copy of the source (21356ef0c107), read on 2026-10-08. The repository is watched and re-audited when it changes.