Calven MCP

Calven's nine product marketing agents keep one source of truth on your market, buyers and positioning. Calven MCP puts it inside Claude, ChatGPT, Codex, Cursor, Copilot and any other MCP client, so sales, marketing, product and leadership work from the same answers your team approved.

Connect

Paste this URL where your client asks for an MCP server, choose OAuth, and sign in to Calven:

https://api.calven.ai/mcp

You need a Calven workspace (14-day trial, no card). Test status for each client is in client support.

Settings → Connectors → Add custom connector, name it Calven, paste the URL, Connect. Enable Calven from the tools menu in a new chat.

Settings → Apps & Connectors → Advanced settings, turn on Developer mode, then Create: name Calven, the URL, OAuth. Add Calven from the + menu in a new chat. Needs Plus, Pro, Business or Enterprise.

Settings → MCP → Add new MCP server, name calven, type HTTP, the URL. Or in ~/.cursor/mcp.json:

{ "mcpServers": { "calven": { "url": "https://api.calven.ai/mcp" } } }

Command palette → MCP: Add Server → HTTP, paste the URL, name it calven.

claude mcp add --transport http calven https://api.calven.ai/mcp
codex mcp add calven --url https://api.calven.ai/mcp

Create a personal key in Calven → Settings → API & MCP and send it as Authorization: Bearer <key>. See authentication. Keep the key out of shared config.

Related MCP server: Cold Email & Outreach MCP Server

Try it

Sales: walk into every deal knowing how you win it.

Why did we lose our last three deals to Acme? Quote the buyers, then give me the first question to ask on my next call against them.

Marketing: campaigns in the buyer's words.

Draft three ad headlines for Heads of Data in our customers' own words, then tell me which one our personas would pick.

BDRs: outreach tested on the buyer before it's sent.

Would our buyer persona reply to this email? If not, rewrite it in our customers' words. [paste email]

Product: build what wins deals.

Which product gaps cost us deals this year? Rank them by deals lost and quote the buyers.

Leadership: win rate you can trust.

What is our win rate by competitor this year versus last, and why do we win and lose? Cite n.

Anyone: no unsupported claims.

Check every product, pricing and competitor claim in this draft against our approved product brief and battle cards. [paste draft]

190 more, by team, in use-cases/.

What it reads, and what it won't do

Your assistant reads, with sources: positioning, messaging, ICP and product brief; competitor dossiers and battle cards; personas; calls, customer quotes and win/loss; market trends; Insights dashboards; and CRM accounts and deals where your workspace allows it.

• Every claim shows its source. An empty result means nothing is recorded, and it says so. No web search, no gaps filled from model memory.

• Read-only. It writes, sends and publishes nothing. The one action is a persona review that returns findings.

• Your permissions. Each user signs in as themselves and sees only what their Calven role allows. Admins decide whether transcripts and pipeline are readable over MCP. Removing a user removes their MCP access.

Data is stored in the EU, a DPA with EU SCCs covers every plan, and the SOC 2 Type I audit is in progress. Details on the Trust Center.

The plugin

The Calven plugin (Agent Plugins 1.0) adds three workflows on the same server: a workspace brief, a competitive brief and a persona copy review. See plugin setup.

Thirteen read tools and one action, listed in the tool catalog. The server also ships four prompts (how we compete with a competitor, a competitor's strengths, who our competitors are, a monthly insights review), shown in your client's prompts or slash commands.

Help

calven.ai/mcp · Troubleshooting · Open a connection issue · support@calven.ai

This repository is the public distribution surface for Calven's hosted MCP server; the server source is private. Manifests, validation and contribution rules are in docs/ and CONTRIBUTING.md. Report security issues through SECURITY.md.