Zero Context Protocol documentation

ZCP exposes an MCP-compatible surface for interoperability and a native ZCP surface for lower-overhead runtime traffic. This site documents both.

Open docs Protocol reference Capability matrix

Start here

Use the overview pages to understand the project split and the two protocol surfaces.
Use the guide pages when building servers, clients, auth, tasks, and transport deployments.
Use the reference pages for exact protocol behavior, capability status, benchmarks, and migration planning.

GitHub repositories

The public source of truth lives in two repositories: the docs and protocol repository, and the Python SDK repository.

FishCodeTech/zero-context-protocol

Docs site, protocol specification, capability matrix, benchmark presentation, and deployment assets.

FishCodeTech/zero-context-protocol-python

Python SDK, runtime, examples, compatibility surfaces, tests, and benchmark harness.

Overview

Start here if you need the project shape, compatibility promise, and the first deployment choices.

Introduction And Getting StartedThe best first page if you already know MCP and need to understand the ZCP split quickly.

Concepts

The object model and runtime features that define how a ZCP server should be designed.

Core Concepts: Tools, Resources, Templates, And PromptsThe core object model behind most ZCP and MCP-compatible server design decisions.Core Concepts: Sampling, Elicitation, Roots, Logging, Progress, And TasksThe guide for workflows that move beyond synchronous tool calling.

Guides

Topic-focused implementation guidance for transport, auth, clients, and servers.

Transport GuideUse this before you lock in your transport, reconnect, and replay assumptions.Authorization GuideThe current auth story, including production boundaries and deployment guidance.Server GuideThe main implementation guide for `FastZCP`, ASGI hosting, stdio, and server policy.

Examples

Scenario-driven pages for adoption, migration, and compatibility planning.

Examples And Use CasesScenario-driven reading for real adoption paths instead of isolated API snippets.FAQA fast way to check the current claim boundary without reading the full reference stack.

Reference

Exact protocol, parity, API, benchmark, and gap-tracking material.

Protocol ReferenceWhat ZCP serves on `/mcp`, how it maps runtime behavior to MCP, and which notes still matter.SDK APIServer APIs, session APIs, transport helpers, auth types, and configuration types.Capability MatrixImplemented versus covered versus still incomplete, with ZCP-native advantages called out directly.