FastMCP with Adam Azzam and Jeremiah Lowin
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In this episode of Software Engineering Daily, host Gregor Vand interviews Jeremiah Lowen and Adam Azzam, founders and stewards of FastMCP, an open-source framework that simplifies building and deploying MCP (Model Context Protocol) servers for agentic AI. The conversation traces the origin of FastMCP from a weekend side project by Jeremiah into a pivotal component of the MCP ecosystem, now officially integrated into the MCP SDK. The team discusses the evolution from FastMCP 1.0 to 3.0, emphasizing the shift from a low-level toolkit to a full-featured, opinionated framework with three core pillars: servers, clients, and apps. They highlight key innovations like the decorator pattern for ergonomic Python integration, the introduction of code mode for secure, server-side execution of agent-generated programs, and the upcoming Prefab DSL for building interactive, generative UIs within MCP apps. The discussion also explores the real-world adoption of MCP in enterprise settings, the limitations of CLI-based agent interaction, and the strategic advantages of MCP for internal tooling, governance, and long-running tasks. The episode concludes with a strong call to action for developers to contribute to the FastMCP project via GitHub, with over 200 contributors already involved. The episode delivers actionable insights for developers building AI agents: adopt FastMCP to rapidly scaffold MCP servers with minimal boilerplate; leverage code mode to enable agents to write and execute programs against your toolset securely; use the new Prefab DSL to build interactive, data-rich UIs without leaving Python; and prioritize internal MCP adoption over CLIs for better governance and user experience. The team emphasizes that MCP is not just a protocol but a foundational layer for building intelligent, composable AI systems, and FastMCP is the most ergonomic path to realizing that vision.
Use FastMCP's decorator pattern to expose Python functions as MCP tools with minimal code—just one line of annotation.
Enable code mode in your MCP server with a single line of code to allow agents to write and execute programs securely on the server side.
Build interactive, data-rich applications using the upcoming Prefab DSL, which lets you return charts, tables, and forms directly from your MCP server.
Prioritize MCP over CLIs for internal enterprise tools to gain better governance, access control, and long-running task support.
Leverage FastMCP 3.0's modular architecture to incrementally add features like auth, proxying, and OpenAPI integration with just a few lines of code.
…and 3 more takeaways available in PodZeus
Introducing FastMCP and the MCP Ecosystem
Gregor Vand introduces the Model Context Protocol (MCP) and FastMCP, an open-source framework by Prefect that provides high-level abstractions for building MCP servers. He welcomes guests Jeremiah Lowen and Adam Azzam, founders and stewards of the project.
The Origin Story: From Side Project to Industry Standard
Jeremiah recounts how FastMCP began as a weekend project to simplify MCP usage, gained traction after being adopted into the official MCP SDK, and evolved into a major framework after a surge in demand from developers and enterprises.
The Three Pillars of FastMCP: Servers, Clients, and Apps
“MCP apps were born out of the realization that in the last 40 years, research did not conclude that Markdown was the best way of presenting information to human beings.”
FastMCP 3.0: A Strategic Re-Architecture for the Future
“We didn't plan this, I just looked it up right now, but that's why we built Fast MCP3. So a feature like this, which is transformative, after we record this podcast, we have to go in the world and tell people about it.”
Code Mode: Enabling Agent-Generated Programs on the Server
“Now your clients can submit programs over your MCP tools. You can spin up a local sandbox thread that executes that program and that little sandboxed thread only has access to those tools.”
“We didn't plan this, I just looked it up right now, but that's why we built Fast MCP3. So a feature like this, which is transformative, after we record this podcast, we have to go in the world and tell people about it.”
“Now your clients can submit programs over your MCP tools. You can spin up a local sandbox thread that executes that program and that little sandboxed thread only has access to those tools.”
“MCP apps were born out of the realization that in the last 40 years, research did not conclude that Markdown was the best way of presenting information to human beings.”
Host
Guests
FastMCP
other
MCP
other
Jeremiah Lowen
person
Adam Azzam
person
Gregor Vand
person
Prefect
organization
Claude
product
Monty
other
ChatGPT
product
Prefab
other
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