---
title: "Streamable HTTP: definition and example | Agent MCP Directory"
description: "Streamable HTTP: The MCP HTTP binding where each message is a POST to one endpoint and replies come as JSON or a request-scoped SSE."
canonical: https://agentmcpdirectory.com/glossary/streamable-http
site: "Agent MCP Directory"
last_updated: 2026-11-04
section: "Glossary"
---

# Streamable HTTP: definition and example | Agent MCP Directory

> Streamable HTTP: The MCP HTTP binding where each message is a POST to one endpoint and replies come as JSON or a request-scoped SSE.

Source: https://agentmcpdirectory.com/glossary/streamable-http
Site: Agent MCP Directory
Last reviewed: 2026-11-04

# Streamable HTTP

Streamable HTTP: The MCP HTTP binding where each message is a POST to one endpoint and replies come as JSON or a request-scoped SSE stream. Example: Zapier MCP requires clients that support Streamable HTTP. Next in the glossary is Tasks extension: An official MCP extension for long-running operations with polling and durable handles, moved out of core in 2026-07-28.

## Definition

The MCP HTTP binding where each message is a POST to one endpoint and replies come as JSON or a request-scoped SSE stream.

## Example, with source

Zapier MCP requires clients that support Streamable HTTP. ([docs.zapier.com](https://docs.zapier.com/mcp/home), read 4 November 2026)

## Where it appears on this site

-   [MCP](https://agentmcpdirectory.com/standards/mcp/)
-   [Building a remote MCP server](https://agentmcpdirectory.com/guides/build-remote-mcp-server-cloudflare-vercel/)

## Neighbouring terms

-   [Step-up authorization](https://agentmcpdirectory.com/glossary/step-up-authorization/): Requesting a wider scope set after a 403 insufficient\_scope challenge, keeping previously granted scopes.
-   [Tasks extension](https://agentmcpdirectory.com/glossary/tasks-extension/): An official MCP extension for long-running operations with polling and durable handles, moved out of core in 2026-07-28.
-   [Tool](https://agentmcpdirectory.com/glossary/mcp-tool/): A function an MCP server offers for the model to call, with a name, description and input schema.

Edition

4 November 2026

Method

[How rows are verified](https://agentmcpdirectory.com/method/)

Data

[CSV and JSON](https://agentmcpdirectory.com/data/)

Markdown

[This page as markdown](https://agentmcpdirectory.com/glossary/streamable-http/index.md)

## Sources

-   [Source for the Streamable HTTP example](https://docs.zapier.com/mcp/home), read 4 November 2026

Last reviewed 4 November 2026