---
id: "concept-custom-connectors-mcp"
type: "concept"
source_timestamps: ["00:08:26", "00:08:38"]
tags: ["api-integration", "claude-co-work", "automation-infrastructure", "mcp"]
related: ["entity-blotato", "action-connect-blotato-api", "entity-claude-co-work", "prereq-claude-cowork-access"]
definition: "Integrations in Claude Co-Work that allow the AI to communicate with external APIs and services via remote server URLs, enabling actions like scheduling and visual generation."
---
# Custom Connectors (Model Context Protocol)

## What They Are

In [[entity-claude-co-work|Claude Co-Work]], **Custom Connectors** let the AI break out of its isolated chat sandbox and call external applications. While Sabrina refers to them simply as 'Connectors,' the underlying technology is the **Model Context Protocol (MCP)** — an open Anthropic-led protocol that exposes tools and data sources via standardized server URLs.

## How Setup Works

1. Navigate to Claude's Settings → Connectors.
2. Click *Add custom connector*.
3. Paste a remote MCP server URL (e.g., `https://mcp.blotato.com/mcp`).
4. Authenticate (typically via an API key issued by the third-party service).

See [[action-connect-blotato-api|Connect Blotato API to Claude]] for the full step-by-step for the Blotato connector.

## What Connectors Unlock

Once installed, Claude can — via natural language commands — perform actions such as:

- Read Gmail and summarize threads.
- Search and summarize Google Drive documents.
- Generate images via the [[entity-blotato|Blotato]] visual templates (whiteboard infographics, carousels, etc.).
- Push scheduled posts directly into LinkedIn, X (Twitter), and Facebook APIs.

All of this is triggered conversationally — no scripting, no Zapier, no zaps.

## Relationship to the Engine

Connectors are one of the four pillars of the [[concept-ai-content-engine|Compounding AI Content Engine]]. Without them, Claude is a great drafter but cannot *act* — it cannot publish, generate visuals, or read your inbox.

## Why Web Claude Cannot Do This

Standard web Claude (and standard web ChatGPT) do not support arbitrary MCP servers or local filesystem listing. This capability is restricted to the desktop client. See [[prereq-claude-cowork-access|Access to Claude Co-Work or Claude Desktop]] for the prerequisite reasoning.

## Risk Surface

Connectors call real APIs with real auth tokens. Anthropic warns that tools and file access must be explicitly configured for security. See open question [[question-blotato-rate-limits|How does Blotato handle API rate limits at scale?]] for the operational risk angle.