MCP server

Returnonsecurity Signal Official

com.returnonsecurity/signal

Checked 26 Oct 2026, 08:29 UTC · It answered and asked for a sign-in

Cybersecurity market intelligence: funding rounds, M&A, investors, valuations, corporate lineage.

Signs in with your accountVerified publisher: returnonsecurity.com

https://mcp.returnonsecurity.com/mcp

At a glance

Type: MCP server
Publisher: returnonsecurity.com (verified by the MCP Registry)
Status: Signs in with your account
Sets up in: Claude Code, Claude Desktop, Codex, Gemini CLI, Cursor, VS Code, Antigravity, ChatGPT, OpenAI API, Grok
Last checked: 26 Oct 2026, 08:29 UTC

Opens the app, which shows the server and asks you to confirm. For other apps, copy the setup below.

Claude Code

claude mcp add --transport http signal https://mcp.returnonsecurity.com/mcp

Claude Desktop

Settings → Connectors → Add custom connector, and paste the URL.

Codex (config.toml)

[mcp_servers.signal]
url = "https://mcp.returnonsecurity.com/mcp"

Gemini CLI

{"mcpServers":{"signal":{"httpUrl":"https://mcp.returnonsecurity.com/mcp"}}}

Cursor

{"mcpServers":{"signal":{"url":"https://mcp.returnonsecurity.com/mcp"}}}

VS Code

{"servers":{"signal":{"type":"http","url":"https://mcp.returnonsecurity.com/mcp"}}}

Antigravity

agy mcp add signal https://mcp.returnonsecurity.com/mcp

ChatGPT

Settings → Apps & Connectors → Advanced settings: turn on Developer mode, then Create a connector and paste the URL. Which plans can do this varies.

OpenAI API (Responses tools)

{"type":"mcp","server_label":"signal","server_url":"https://mcp.returnonsecurity.com/mcp","require_approval":"always"}

Grok (xAI API tools)

{"type":"mcp","server_label":"signal","server_url":"https://mcp.returnonsecurity.com/mcp"}

Signs in with your account: your agent app opens a sign-in page the first time you use it.

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