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perplexity-comet-mcp MCP Server

Bridge Claude Code with Perplexity Comet for autonomous browsing and tab management

Publisher claimed. No tool list reported, and Pod has not connected to this server.

Status

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Connect

Published as perplexity-comet-mcp on npm. Runs locally.

Known issues

9 problems reported by people outside the maintainer team. Issues filed by the project's own owners, members and collaborators are excluded — those are release checklists and internal refactors, not things that will go wrong for you. Showing 6.

Most discussed

Comet Remote MCP Support

Is it possible to use windows comet as remote mcp server? I want to connect it via Linux n8n to Windows comet as comet is not supported on Linux boxes. So connecting comet as remote mcp server is the only choice left.

Please help!

Read the thread · 2026-01-18 · closed · external user · 11 comments

fix(security): strip fake BEGIN UNTRUSTED markers from page content

Problem

wrapUntrustedPageContent in src/index.ts strips [END UNTRUSTED nonce= from content to prevent fake closing markers, but does not strip [BEGIN UNTRUSTED PAGE CONTENT nonce= from content.

An attacker-controlled page could inject a fake opening marker inside the wrapped content to confuse downstream parsers that look for nested marker pairs.

Source: PR #17 review — https://github.com/RapierCraft/Perplexity-Comet-MCP/pull/17#issuecomment-4764326187

Confidence: CONF

Read the thread · 2026-06-22 · closed · external user · 8 comments

fix: validateSelector allowlist permits raw newlines via backslash-s (review finding — PR #32)

Problem

The validateSelector() function in src/upload-validator.ts:220 uses \s in its character allowlist, which matches raw newlines (\n) and carriage returns (\r) in addition to spaces and tabs. Raw newlines in a CSS selector are not valid CSS and could produce unexpected behavior in error messages that echo the selector (e.g., src/cdp-client.ts:1625: No element found matching selector: ${selector}).

Source: PR #32 — fix(security): validate selector parameter before DOM.

Read the thread · 2026-06-22 · closed · 7 comments

fix: http-bridge handleUpload missing selector validation at handler boundary (review finding — PR #32)

Problem

src/http-bridge.ts:607 passes a user-supplied selector directly to cometClient.uploadFile() without calling validateSelector() at the HTTP handler boundary. The cdp-client.ts inner guard (added in PR #32) fires and protects the CDP layer, but the HTTP bridge handler lacks the same tool-boundary defense-in-depth that src/index.ts received in PR #32.

Source: PR #32 — fix(security): validate selector parameter before DOM.querySelector Agent: General Security (SEC) *

Read the thread · 2026-06-22 · closed · 7 comments

fix: expand denylist to block /proc subtree (review finding — PR #28)

Problem

validateUploadPath() in src/upload-validator.ts blocks /proc/self/environ explicitly but does not block the broader /proc/ prefix, leaving /proc/self/maps (memory layout), /proc/self/fd/* (open file descriptors), and /proc/1/environ (root process environment) accessible.

Source: PR #28 — fix(security): address upload path validation vulnerabilities from PR #14 review Agent: Security Domain Confidence: POSSIBLE Severity: MEDIUM Review comment: https:

Read the thread · 2026-06-22 · closed · 7 comments

Most recent

comet_screenshot tool not working - CDP captureScreenshot type mismatch

Description

The comet_screenshot tool is not working properly. When called, it fails to return screenshot data.

Technical Analysis

Root Cause

The issue is in src/cdp-client.ts at line 1113:

async screenshot(format: "png" | "jpeg" = "png"): Promise<ScreenshotResult> {
  this.ensureConnected();
  return this.client!.Page.captureScreenshot({ format }) as Promise<ScreenshotResult>;
}

Problems identified:

  1. ensureConnected() is not being awaited, which mean

Read the thread · 2026-01-24 · closed · external user · 5 comments

See all 9 reports Pod holds for perplexity-comet-mcp.

Firsthand observations

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