MCP server

Graham Number Calculator

com.edgethirteen.www/graham-number-calculator

Checked 28 Oct 2026, 09:03 UTC · Connected to it and listed its tools

Benjamin Graham's fair-value ceiling and margin of safety for a US-listed ticker.

Working at last checkVerified publisher: edgethirteen.comAbout 237 tokens per request once connected1 tools

Website

https://www.edgethirteen.com/api/mcp/graham-number-calculator

At a glance

Type: MCP server
Publisher: edgethirteen.com (verified by the MCP Registry)
Status: Working at last check
Tools: 1
Token cost: About 237 tokens per request
Sets up in: Claude Code, Claude Desktop, Codex, Gemini CLI, Cursor, VS Code, Antigravity, ChatGPT, OpenAI API, Grok
Last checked: 28 Oct 2026, 09:03 UTC

Connect it to your agent

Add to Cursor Add to VS Code VS Code Insiders

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 graham-number-calculator https://www.edgethirteen.com/api/mcp/graham-number-calculator

Claude Desktop

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

Codex (config.toml)

[mcp_servers.graham-number-calculator]
url = "https://www.edgethirteen.com/api/mcp/graham-number-calculator"

Gemini CLI

{"mcpServers":{"graham-number-calculator":{"httpUrl":"https://www.edgethirteen.com/api/mcp/graham-number-calculator"}}}

Cursor

{"mcpServers":{"graham-number-calculator":{"url":"https://www.edgethirteen.com/api/mcp/graham-number-calculator"}}}

VS Code

{"servers":{"graham-number-calculator":{"type":"http","url":"https://www.edgethirteen.com/api/mcp/graham-number-calculator"}}}

Antigravity

agy mcp add graham-number-calculator https://www.edgethirteen.com/api/mcp/graham-number-calculator

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":"graham-number-calculator","server_url":"https://www.edgethirteen.com/api/mcp/graham-number-calculator","require_approval":"always"}

Grok (xAI API tools)

{"type":"mcp","server_label":"graham-number-calculator","server_url":"https://www.edgethirteen.com/api/mcp/graham-number-calculator"}

Tools

compute_graham_number ~237 tokens
Compute Benjamin Graham's fair-value ceiling (sqrt(22.5 * EPS * book value per share)) for a US-listed ticker, and the margin of safety against its current price. Looks up EPS, book value per share, and price from SEC EDGAR + market data automatically -- just pass a ticker. You can also pass eps/bvp

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