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The Model Context Protocol (MCP) is how ChatGPT, Claude, and Perplexity consume live data from connected tools. CorpusIQ runs a production MCP server that exposes 40+business tools to all three LLMs through a single OAuth connection. This hub collects five articles that explain what MCP is, how it differs from a traditional API, how to build and secure an MCP server, and how to connect OpenClaw, Hermes, and agent tools via device login.
A CorpusIQ answer is assembled in three steps. Each step has one job, and the job is done by a different part of the system, so it is clear where a number came from and what checked it.
Your assistant plans the question, requests the data it needs, and reasons over the result. The analysis itself is the model step.
Numbers are checked against consistent KPI definitions before they reach the answer, and figures that come from different systems are reconciled against each other rather than reported side by side.
Every figure carries a citation back to the record it came from. The reconciliation strip shows how each number was reconciled, so the answer can be checked rather than taken on faith.
The full mechanism, including the MCP Apps security model, the iframe sandboxing, and the auditable message layer: MCP Apps, interactive UI inside Claude and ChatGPT.
Connect external tools like Clawbot, Hermes agents, CI runners, and IDE plugins straight to the CorpusIQ MCP server with device login. No browser, no client secret.
A plain-English introduction to MCP: what it does, why it exists, how it differs from a plugin, and why it is the connective layer for ChatGPT, Claude, and Perplexity.
APIs expose endpoints. MCP servers expose tools. The distinction changes how you design integrations, who can consume them, and what the LLM does with them.
How to build a Model Context Protocol server that ChatGPT, Claude, and Perplexity can consume. Tool definitions, authentication, transports, and the traps to avoid.
Read-only scopes, prompt-injection defenses, data retention, and the audit trail every MCP server needs before it touches production business data.
How CLI tools, agent loops, and CI runners authenticate to the CorpusIQ MCP server without a browser. OAuth 2.0 Device Authorization Grant, step-by-step, with Python and Node.js reference code.
Most agents stall for the same reason. The model can plan and act, but it cannot see your business. No invoices, no order history, no customer threads, no files. A framework like Hermes can run a loop all day, and the plan is still only as good as the data behind it.
CorpusIQ is the connection that closes that gap. One OAuth link gives an agent read-only access to QuickBooks, Shopify, HubSpot, Gmail, Google Drive, Slack, and 40+ other tools, with 150+ skills and 500+tools to act on what it finds. The agent asks; CorpusIQ returns source-backed records on demand. Direct MCP does not retain raw customer files or full connector response payloads. Operational query text, per-user tool-call metadata, and bounded outcome summaries may be retained for up to 30 days. Optional indexed search keeps embeddings and minimal metadata until connector revocation or account deletion. Your AI provider's plan policy governs its conversation handling.
So instead of wiring a dozen integrations per agent, you point the agent at one MCP server and it inherits every connector the operator already authorized. The same server that answers ChatGPT, Claude, and Perplexity also answers your agents.
How to connect an agent to the CorpusIQ MCP serverCorpusIQ is a live MCP server with 40+ connected business tools: QuickBooks, Shopify, HubSpot, Gmail, Google Drive, GA4, Google Ads, Meta Ads, Slack, PostgreSQL, SQL Server, and more. One OAuth, one subscription, three LLMs. Solo plan starts at $29.95 per month.
Remote MCP support in ChatGPT.
Native MCP in Claude Desktop, Web, Code.
Remote MCP from Perplexity.
Custom MCP connectors over HTTPS.
Live now. Ask in any channel or DM, answers cite their source.
Live today. Your workspace admin installs it, and your connected tools carry over with the same account.
Hit the “Not Acceptable: client must accept both application/json and text/event-stream” error? The fix.
CorpusIQ is an AI intelligence layer that gives AI assistants and AI agents governed access to live business data through a single connection. Retrieval-only connector tools that do not write back to connected systems; CorpusIQ control-plane tools, the only tools that accept writes, are separately named and act on your CorpusIQ configuration. A user asks a question in plain English inside ChatGPT, Claude, or Perplexity. CorpusIQ reads from 40+ connected business systems simultaneously, validates numbers against consistent KPI definitions, and returns a source-cited answer. MCP is the protocol CorpusIQ uses to expose this intelligence layer to AI assistants.
An MCP server is a program that implements the Model Context Protocol so AI assistants like ChatGPT, Claude, and Perplexity can read live data and call tools through one standard interface. CorpusIQ runs a production MCP server that exposes 40+ business tools through a single read-only access connection.
The Model Context Protocol (MCP) is an open standard that lets AI assistants consume tools and data from outside systems in a consistent way. Instead of building a separate plugin for each model, one MCP server serves ChatGPT, Claude, and Perplexity at once.
An API exposes endpoints that developers call in code. An MCP server exposes tools the AI assistant itself can discover and call during a conversation. APIs are consumed by programs; MCP tools are consumed by the model.
ChatGPT, Claude, Perplexity, and Grok all consume MCP. CorpusIQ connects to all of them through the same MCP server, so one subscription and one OAuth grant cover every assistant you use.
CorpusIQ is an AI intelligence layer for business data that uses MCP as its protocol. It runs a production MCP server connecting 40+ business tools, including QuickBooks, Shopify, HubSpot, Gmail, Google Drive, and GA4, to ChatGPT, Claude, and Perplexity with read-only access and scoped customer-data retention. The intelligence layer above the MCP server handles cross-source reasoning, skills routing, metrics validation, and source citation.
No. CorpusIQ is a hosted MCP server you connect in a few minutes. Building your own only matters if you are a developer exposing your own systems, which the Building an MCP Server guide covers.