---
title: "Model Context Protocol · Sources · Agent Fieldbook"
url: https://agentfieldbook.org/sources/modelcontextprotocol-io/
description: "Model Context Protocol (modelcontextprotocol.io): 4 citations across the Fieldbook, credibility tier 1. The provenance record: every datapoint that cites this source and where it appears."
section: "Sources · T1"
source: Agent Fieldbook — generated from the published page
---

# Model Context Protocol

Every datapoint in the Fieldbook that cites **Model Context Protocol** as a source, with the credibility tier it carries and a link to where the claim appears. The public provenance record for this source.

## Cited by

- [↗ modelcontextprotocol.io](https://modelcontextprotocol.io/specification/)

- [MCP capability primitives](https://modelcontextprotocol.io/specification)

- [↗ modelcontextprotocol.io](https://modelcontextprotocol.io/specification)

- [Tool-calling](https://modelcontextprotocol.io/specification/)

- [Official MCP Registry](https://modelcontextprotocol.io/registry/about)

- [↗ modelcontextprotocol.io](https://modelcontextprotocol.io/registry/about)

## Field notes

modelcontextprotocol.io· cited 4 citations across the Fieldbook

**Model Context Protocol** (modelcontextprotocol.io) is a primary or authoritative reference: a vendor statement about its own product, or an established research body, standards organisation or government source, strong enough to underpin a confirmed datapoint. It is cited 4 times across the Fieldbook, backing datapoints in protocols, ontologies, node types and marketplaces. Every figure the corpus draws from this source is graded T1, so the credibility of the claim travels with the claim itself.

Every datapoint below links to where the claim appears in the corpus, where a dedicated view exists, and to the exact source URL it rests on. Any reader can follow a fact back to its origin and check it, rather than take it on trust.

- [Brandon Chaplin](https://www.linkedin.com/in/brandon-chaplin-digital-marketing-strategist)