{ "schemaVersion": "2026-03-01", "name": "advent-of-agents", "title": "Google Cloud Advent of Agents — Multi-Season Kata & Architecture MCP", "description": "Search and retrieve all published daily AI Agent tutorials, copy-pasteable ADK/A2A/Cloud Run code snippets, and raw .md specifications across Season 1 (Dec 2025), Season 2 (Mar 2026), and Season 3 (Oct 2026).", "homepage": "https://adventofagents.com", "markdownIndex": "https://adventofagents.com/llms.txt", "fullMarkdownBundle": "https://adventofagents.com/llms-full.txt", "sitemap": "https://adventofagents.com/sitemap.xml", "contentNegotiation": { "supportsAcceptMarkdown": true, "supportsDotMdSuffix": true, "supportsBotUserAgentAutoMarkdown": true, "exampleCurl": "curl -sL https://adventofagents.com/2026/10/01" }, "webMcpTools": [ { "name": "search_advent_days", "description": "Search across all published Advent of Agents days (Seasons 1, 2, and 3) by keyword, topic, or tag.", "inputSchema": { "type": "object", "properties": { "query": { "type": "string", "description": "Keyword or phrase (e.g., ADK, A2A, WebMCP, Cloud Run, Memory)" }, "season": { "type": "number", "enum": [ 1, 2, 3 ], "description": "Optional season number filter (1=Dec 2025, 2=Mar 2026, 3=Oct 2026)" }, "tag": { "type": "string", "description": "Optional exact or partial tag filter" } } } }, { "name": "get_day_markdown", "description": "Retrieve the full published Markdown (.md) specification and code snippets for a specific season and day.", "inputSchema": { "type": "object", "required": [ "season", "day" ], "properties": { "season": { "type": "number", "enum": [ 1, 2, 3 ] }, "day": { "type": "number", "minimum": 1, "maximum": 31 } } } }, { "name": "list_seasons", "description": "List all Advent of Agents seasons, dates, day counts, and archive routes.", "inputSchema": { "type": "object", "properties": {} } } ], "seasons": [ { "season": 3, "label": "Season 3 — October 2026 (Autumn / Halloween Edition)", "route": "/2026/10/", "markdownIndex": "/2026/10/index.md", "apiEndpoint": "/api/season3.json", "publishedDaysCount": 0, "days": [] }, { "season": 2, "label": "Season 2 — March 2026 (Spring Cherry Blossom Edition)", "route": "/2026/03/", "markdownIndex": "/2026/03/index.md", "apiEndpoint": "/api/season2.json", "publishedDaysCount": 31, "days": [ { "day": 1, "title": "Season 2 Kick Off", "summary": "31 days. 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Bootstrap high-performance agents in seconds.", "tags": [ "ADK", "Agent Starter Pack", "Python", "Go", "TypeScript", "Java" ], "webUrl": "/2026/03/02?utm_source=adventofagents&utm_medium=mcp&utm_campaign=adventofagents_s2_2026&utm_content=day02", "markdownUrl": "/2026/03/02.md?utm_source=adventofagents&utm_medium=mcp&utm_campaign=adventofagents_s2_2026&utm_content=day02", "hasCompanionVideo": false }, { "day": 3, "title": "Build AI Agents with Gemini 3.1 Flash-Lite", "summary": "Announcing Gemini 3.1 Flash-Lite: our most cost-efficient model for building high-quality AI agents at scale.", "tags": [ "Gemini 3.1 Flash-Lite", "Product Launch", "Vertex AI", "Memory Agent" ], "webUrl": "/2026/03/03?utm_source=adventofagents&utm_medium=mcp&utm_campaign=adventofagents_s2_2026&utm_content=day03", "markdownUrl": "/2026/03/03.md?utm_source=adventofagents&utm_medium=mcp&utm_campaign=adventofagents_s2_2026&utm_content=day03", "hasCompanionVideo": false }, { "day": 4, "title": "MCP Servers: Add external tools to your agents in just a few lines", "summary": "Wire up multiple MCP servers simultaneously to trace bugs from Linear to GitHub PRs.", "tags": [ "Code Analysis", "Tool Call", "MCP", "ADK" ], "webUrl": "/2026/03/04?utm_source=adventofagents&utm_medium=mcp&utm_campaign=adventofagents_s2_2026&utm_content=day04", "markdownUrl": "/2026/03/04.md?utm_source=adventofagents&utm_medium=mcp&utm_campaign=adventofagents_s2_2026&utm_content=day04", "hasCompanionVideo": false }, { "day": 5, "title": "Long Term Recall: Memory Plugins", "summary": "Implement persistent semantic memory for AI agents using the GoodmemPlugin.", "tags": [ "ADK", "Memory", "Vector Database", "Modularity" ], "webUrl": "/2026/03/05?utm_source=adventofagents&utm_medium=mcp&utm_campaign=adventofagents_s2_2026&utm_content=day05", "markdownUrl": "/2026/03/05.md?utm_source=adventofagents&utm_medium=mcp&utm_campaign=adventofagents_s2_2026&utm_content=day05", "hasCompanionVideo": false }, { "day": 6, "title": "ADK Skills", "summary": "Eliminate wasted tokens with progressive disclosure. 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"/2026/03/11?utm_source=adventofagents&utm_medium=mcp&utm_campaign=adventofagents_s2_2026&utm_content=day11", "markdownUrl": "/2026/03/11.md?utm_source=adventofagents&utm_medium=mcp&utm_campaign=adventofagents_s2_2026&utm_content=day11", "hasCompanionVideo": false }, { "day": 12, "title": "Multi-Agent Patterns: Generator-Critic Agent Loop", "summary": "Automatically refine LLM outputs using ADK's LoopAgent to orchestrate a conversation between a creative Writer and a strict Critic.", "tags": [ "Multi-Agent", "LoopAgent", "Quality Assurance", "ADK" ], "webUrl": "/2026/03/12?utm_source=adventofagents&utm_medium=mcp&utm_campaign=adventofagents_s2_2026&utm_content=day12", "markdownUrl": "/2026/03/12.md?utm_source=adventofagents&utm_medium=mcp&utm_campaign=adventofagents_s2_2026&utm_content=day12", "hasCompanionVideo": false }, { "day": 13, "title": "Multi-Agent Patterns: Iterative Refinement", "summary": "Compose Skills, MCP, and Code Execution into a meta-agent that builds, tests, and 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Agentic RAG with Vector Search 2.0", "summary": "Build an Agentic RAG system in 3 minutes with Vector Search 2.0 and ADK.", "tags": [ "ADK", "Vector Search", "RAG", "Python" ], "webUrl": "/2026/03/15?utm_source=adventofagents&utm_medium=mcp&utm_campaign=adventofagents_s2_2026&utm_content=day15", "markdownUrl": "/2026/03/15.md?utm_source=adventofagents&utm_medium=mcp&utm_campaign=adventofagents_s2_2026&utm_content=day15", "hasCompanionVideo": false }, { "day": 16, "title": "ADK Dev Skills: Accelerated Multiagent Triage", "summary": "Accelerate multiagent system development from scaffolding to deployment using ADK Dev Skills.", "tags": [ "Multiagent", "Dev Skills", "CLI" ], "webUrl": "/2026/03/16?utm_source=adventofagents&utm_medium=mcp&utm_campaign=adventofagents_s2_2026&utm_content=day16", "markdownUrl": "/2026/03/16.md?utm_source=adventofagents&utm_medium=mcp&utm_campaign=adventofagents_s2_2026&utm_content=day16", "hasCompanionVideo": false }, { "day": 17, "title": "Workspace & Gemini Enterprise: no-code agents", "summary": "Connect and use Google Workspace connectors in personal Gemini Enterprise agents.", "tags": [ "Gemini Enterprise", "Google Workspace", "Connectors", "Agent Designer" ], "webUrl": "/2026/03/17?utm_source=adventofagents&utm_medium=mcp&utm_campaign=adventofagents_s2_2026&utm_content=day17", "markdownUrl": "/2026/03/17.md?utm_source=adventofagents&utm_medium=mcp&utm_campaign=adventofagents_s2_2026&utm_content=day17", "hasCompanionVideo": false }, { "day": 18, "title": "Workspace & Gemini Enterprise: ADK agents", "summary": "Build ADK agents that use the Vertex AI Search MCP server and Google Workspace APIs, deploy them to Vertex AI, and register them with Gemini Enterprise.", "tags": [ "Gemini Enterprise", "Google Workspace", "ADK", "MCP", "Vertex AI" ], "webUrl": "/2026/03/18?utm_source=adventofagents&utm_medium=mcp&utm_campaign=adventofagents_s2_2026&utm_content=day18", "markdownUrl": 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Zero to Production-Ready AI Agents on Google Cloud.", "tags": [ "Launch" ], "webUrl": "/2025/12/01?utm_source=adventofagents&utm_medium=mcp&utm_campaign=adventofagents_s1_2026&utm_content=day01", "markdownUrl": "/2025/12/01.md?utm_source=adventofagents&utm_medium=mcp&utm_campaign=adventofagents_s1_2026&utm_content=day01", "hasCompanionVideo": false }, { "day": 2, "title": "Hello World with YAML", "summary": "Build your first AI agent with Gemini 3 in under 5 minutes without writing a single line of code.", "tags": [ "ADK", "YAML", "Quickstart" ], "webUrl": "/2025/12/02?utm_source=adventofagents&utm_medium=mcp&utm_campaign=adventofagents_s1_2026&utm_content=day02", "markdownUrl": "/2025/12/02.md?utm_source=adventofagents&utm_medium=mcp&utm_campaign=adventofagents_s1_2026&utm_content=day02", "hasCompanionVideo": false }, { "day": 3, "title": "Gemini 3 + ADK", "summary": "Build a powerful AI Agent using Gemini 3 and ADK with native support for Google Search grounding, computer use, and real-time streaming.", "tags": [ "Gemini 3", "ADK", "Google Search" ], "webUrl": "/2025/12/03?utm_source=adventofagents&utm_medium=mcp&utm_campaign=adventofagents_s1_2026&utm_content=day03", "markdownUrl": "/2025/12/03.md?utm_source=adventofagents&utm_medium=mcp&utm_campaign=adventofagents_s1_2026&utm_content=day03", "hasCompanionVideo": false }, { "day": 4, "title": "Source-Based Deployment", "summary": "Deploy your agents directly from source code with Agent Engine - no more serialization headaches.", "tags": [ "Agent Engine", "Deployment", "ADK" ], "webUrl": "/2025/12/04?utm_source=adventofagents&utm_medium=mcp&utm_campaign=adventofagents_s1_2026&utm_content=day04", "markdownUrl": "/2025/12/04.md?utm_source=adventofagents&utm_medium=mcp&utm_campaign=adventofagents_s1_2026&utm_content=day04", "hasCompanionVideo": false }, { "day": 5, "title": "Production Observability", "summary": "Agent Starter Pack includes production-grade observability with zero config. Cloud Trace, Log Analytics, and BigQuery integration out of the box.", "tags": [ "Observability", "Cloud Trace", "BigQuery", "Terraform" ], "webUrl": "/2025/12/05?utm_source=adventofagents&utm_medium=mcp&utm_campaign=adventofagents_s1_2026&utm_content=day05", "markdownUrl": "/2025/12/05.md?utm_source=adventofagents&utm_medium=mcp&utm_campaign=adventofagents_s1_2026&utm_content=day05", "hasCompanionVideo": false }, { "day": 6, "title": "🧑‍💻 ADK ready in Antigravity, Gemini CLI, Cursor, Firebase Studio and more", "summary": "Building agents shouldn't require an hour of environment configuration. If you use the Agent Starter Pack you already have IDE magnet context baked in for the Agent Development Kit (ADK).", "tags": [ "ANTIGRAVITY", "CLI", "IDE", "ADK" ], "webUrl": "/2025/12/06?utm_source=adventofagents&utm_medium=mcp&utm_campaign=adventofagents_s1_2026&utm_content=day06", "markdownUrl": "/2025/12/06.md?utm_source=adventofagents&utm_medium=mcp&utm_campaign=adventofagents_s1_2026&utm_content=day06", "hasCompanionVideo": false }, { "day": 7, "title": "LLMs Can Execute Code: Autonomous Problem Solving", "summary": "Explore how LLMs can not only write but also execute, debug, and refine code autonomously, transforming them into powerful problem solvers.", "tags": [ "Code Execution", "LLMs", "Agents", "ADK" ], "webUrl": "/2025/12/07?utm_source=adventofagents&utm_medium=mcp&utm_campaign=adventofagents_s1_2026&utm_content=day07", "markdownUrl": "/2025/12/07.md?utm_source=adventofagents&utm_medium=mcp&utm_campaign=adventofagents_s1_2026&utm_content=day07", "hasCompanionVideo": false }, { "day": 8, "title": "Effective Context Management with ADK Layers", "summary": "ADK Context design thesis: context as a compiled view", "tags": [ "Context Management", "Layers", "Caching" ], "webUrl": "/2025/12/08?utm_source=adventofagents&utm_medium=mcp&utm_campaign=adventofagents_s1_2026&utm_content=day08", "markdownUrl": "/2025/12/08.md?utm_source=adventofagents&utm_medium=mcp&utm_campaign=adventofagents_s1_2026&utm_content=day08", "hasCompanionVideo": false }, { "day": 9, "title": "⏪ Undo buttons for your Agents", "summary": "Building an \"Edit Message\" or \"Regenerate\" feature shouldn't require complex database migrations. In the ADK, time travel is built-in.", "tags": [ "Rewind", "Resume", "ADK", "Time Travel", "Undo" ], "webUrl": "/2025/12/09?utm_source=adventofagents&utm_medium=mcp&utm_campaign=adventofagents_s1_2026&utm_content=day09", "markdownUrl": "/2025/12/09.md?utm_source=adventofagents&utm_medium=mcp&utm_campaign=adventofagents_s1_2026&utm_content=day09", "hasCompanionVideo": false }, { "day": 10, "title": "Big Context ≠ Better Memory", "summary": "Long-running agent sessions face two enemies: latency and \"lost in the middle\" syndrome. The ADK solves this with Context Caching and Context Compaction.", "tags": [ "Memory", "ADK", "Context Caching", "Context Compaction", "Memory" ], "webUrl": "/2025/12/10?utm_source=adventofagents&utm_medium=mcp&utm_campaign=adventofagents_s1_2026&utm_content=day10", "markdownUrl": "/2025/12/10.md?utm_source=adventofagents&utm_medium=mcp&utm_campaign=adventofagents_s1_2026&utm_content=day10", "hasCompanionVideo": false }, { "day": 11, "title": "Google Managed MCP", "summary": "Connect Agents to Google Services with Managed MCP.", "tags": [ "MCP", "ADK", "Google Cloud", "BigQuery", "Google Maps", "GKE", "Compute Engine" ], "webUrl": "/2025/12/11?utm_source=adventofagents&utm_medium=mcp&utm_campaign=adventofagents_s1_2026&utm_content=day11", "markdownUrl": "/2025/12/11.md?utm_source=adventofagents&utm_medium=mcp&utm_campaign=adventofagents_s1_2026&utm_content=day11", "hasCompanionVideo": false }, { "day": 12, "title": "Multimodal Agents with Gemini Live API", "summary": "Explore ADK Bi-Directional Streaming: A visual guide to real-time multimodal AI agent development with WebSockets and Gemini Live.", "tags": [ "Bidi-streaming", "WebSockets", "Gemini Live", "AI Agent", "ADK" ], "webUrl": "/2025/12/12?utm_source=adventofagents&utm_medium=mcp&utm_campaign=adventofagents_s1_2026&utm_content=day12", "markdownUrl": "/2025/12/12.md?utm_source=adventofagents&utm_medium=mcp&utm_campaign=adventofagents_s1_2026&utm_content=day12", "hasCompanionVideo": false }, { "day": 13, "title": "Interactions API", "summary": "Interactions API marks a fundamental shift from stateless text generation to stateful, autonomous workflows.", "tags": [ "Interactions API", "ADK", "A2A", "Google Cloud", "Google DeepMind" ], "webUrl": "/2025/12/13?utm_source=adventofagents&utm_medium=mcp&utm_campaign=adventofagents_s1_2026&utm_content=day13", "markdownUrl": "/2025/12/13.md?utm_source=adventofagents&utm_medium=mcp&utm_campaign=adventofagents_s1_2026&utm_content=day13", "hasCompanionVideo": false }, { "day": 14, "title": "Connecting Agents with A2A", "summary": "Connect agents across teams, frameworks, and languages with the Agent2Agent (A2A) Protocol. ADK makes implementing A2A simple.", "tags": [ "ADK A2A", "ADK", "A2A", "Multi-Agent", "Agent Starter Pack" ], "webUrl": "/2025/12/14?utm_source=adventofagents&utm_medium=mcp&utm_campaign=adventofagents_s1_2026&utm_content=day14", "markdownUrl": "/2025/12/14.md?utm_source=adventofagents&utm_medium=mcp&utm_campaign=adventofagents_s1_2026&utm_content=day14", "hasCompanionVideo": false }, { "day": 15, "title": "Introducing A2UI", "summary": "Discover A2UI (Agent-to-User Interface), an open project that enables agents to stream dynamic, generative UIs as JSONL payloads, decoupling UI definition from rendering and breaking the ceiling of traditional chat interfaces.", "tags": [ "A2UI", "Generative UI", "Agent-to-User Interface", "Agent Development" ], "webUrl": "/2025/12/15?utm_source=adventofagents&utm_medium=mcp&utm_campaign=adventofagents_s1_2026&utm_content=day15", "markdownUrl": "/2025/12/15.md?utm_source=adventofagents&utm_medium=mcp&utm_campaign=adventofagents_s1_2026&utm_content=day15", "hasCompanionVideo": false }, { "day": 16, "title": "LangGraph + A2A", "summary": "Build LangGraph agents with full A2A capabilities using Agent Starter Pack. Your agent becomes instantly discoverable by other agents.", "tags": [ "LangGraph", "A2A", "Agent Starter Pack", "Multi-Agent" ], "webUrl": "/2025/12/16?utm_source=adventofagents&utm_medium=mcp&utm_campaign=adventofagents_s1_2026&utm_content=day16", "markdownUrl": "/2025/12/16.md?utm_source=adventofagents&utm_medium=mcp&utm_campaign=adventofagents_s1_2026&utm_content=day16", "hasCompanionVideo": false }, { "day": 17, "title": "Gemini 3 Flash is here!", "summary": "Google's fastest model just got smarter with configurable thinking levels and granular controls.", "tags": [ "gemini", "flash", "thinking", "adk" ], "webUrl": "/2025/12/17?utm_source=adventofagents&utm_medium=mcp&utm_campaign=adventofagents_s1_2026&utm_content=day17", "markdownUrl": "/2025/12/17.md?utm_source=adventofagents&utm_medium=mcp&utm_campaign=adventofagents_s1_2026&utm_content=day17", "hasCompanionVideo": false }, { "day": 18, "title": "Cloud API Registry + ADK", "summary": "The biggest friction in enterprise agent development isn't the model—it's the tools. Vertex AI Agent Builder now integrates with Cloud API Registry, providing a centralized tool repository.", "tags": [ "Cloud API Registry", "Vertex AI Agent Builder", "ADK", "Tools" ], "webUrl": "/2025/12/18?utm_source=adventofagents&utm_medium=mcp&utm_campaign=adventofagents_s1_2026&utm_content=day18", "markdownUrl": "/2025/12/18.md?utm_source=adventofagents&utm_medium=mcp&utm_campaign=adventofagents_s1_2026&utm_content=day18", "hasCompanionVideo": false }, { "day": 19, "title": "Register to Gemini Enterprise", "summary": "Register your agent to Gemini Enterprise! 🌐 and make it discoverable to everyone in your organization, right alongside Google's built-in agents.", "tags": [ "Gemini Enterprise", "Agent Starter Pack", "Deployment", "A2A" ], "webUrl": "/2025/12/19?utm_source=adventofagents&utm_medium=mcp&utm_campaign=adventofagents_s1_2026&utm_content=day19", "markdownUrl": "/2025/12/19.md?utm_source=adventofagents&utm_medium=mcp&utm_campaign=adventofagents_s1_2026&utm_content=day19", "hasCompanionVideo": false }, { "day": 20, "title": "A2A Extensions: The Flexible Sidecar for Custom Data", "summary": "The Agent-to-Agent (A2A) protocol relies on a strict format, but real-world complexity often requires unique data. A2A Extensions provide a \"Sidecar\" pattern for custom data without breaking backward compatibility.", "tags": [ "A2A Extensions", "Extensions", "Sidecar Pattern", "Agent Communication" ], "webUrl": "/2025/12/20?utm_source=adventofagents&utm_medium=mcp&utm_campaign=adventofagents_s1_2026&utm_content=day20", "markdownUrl": "/2025/12/20.md?utm_source=adventofagents&utm_medium=mcp&utm_campaign=adventofagents_s1_2026&utm_content=day20", "hasCompanionVideo": false }, { "day": 21, "title": "Kaggle Capstone Winners Highlight", "summary": "🏆 The Hall of Fame: Meet the Winners", "tags": [ "Hall of Fame", "Winners", "Agents for Good", "Enterprise Agents", "Concierge Agents", "Freestyle" ], "webUrl": "/2025/12/21?utm_source=adventofagents&utm_medium=mcp&utm_campaign=adventofagents_s1_2026&utm_content=day21", "markdownUrl": "/2025/12/21.md?utm_source=adventofagents&utm_medium=mcp&utm_campaign=adventofagents_s1_2026&utm_content=day21", "hasCompanionVideo": false }, { "day": 22, "title": "Security & Guardrails", "summary": "Prompt Engineering is not a Security Strategy. Asking an LLM nicely to \"please ignore PII\" is not governance; it's wishful thinking.", "tags": [ "Model Armor", "Security", "guardrails", "ADK" ], "webUrl": "/2025/12/22?utm_source=adventofagents&utm_medium=mcp&utm_campaign=adventofagents_s1_2026&utm_content=day22", "markdownUrl": "/2025/12/22.md?utm_source=adventofagents&utm_medium=mcp&utm_campaign=adventofagents_s1_2026&utm_content=day22", "hasCompanionVideo": false }, { "day": 23, "title": "Durable, Resilient Agents with Google ADK + Restate", "summary": "Most agents are fragile. Durable Execution with Google ADK and Restate ensures your agent never loses context, survives crashes, and can pause execution for days.", "tags": [ "Durable Execution", "ADK", "Restate", "Resilient Agents" ], "webUrl": "/2025/12/23?utm_source=adventofagents&utm_medium=mcp&utm_campaign=adventofagents_s1_2026&utm_content=day23", "markdownUrl": "/2025/12/23.md?utm_source=adventofagents&utm_medium=mcp&utm_campaign=adventofagents_s1_2026&utm_content=day23", "hasCompanionVideo": false }, { "day": 24, "title": "A2A-ify Anything", "summary": "Take any ADK or LangGraph sample and launch it with A2A on top. Layer A2A capabilities onto existing agents with a single flag.", "tags": [ "A2A", "Agent Starter Pack", "ADK Samples" ], "webUrl": "/2025/12/24?utm_source=adventofagents&utm_medium=mcp&utm_campaign=adventofagents_s1_2026&utm_content=day24", "markdownUrl": "/2025/12/24.md?utm_source=adventofagents&utm_medium=mcp&utm_campaign=adventofagents_s1_2026&utm_content=day24", "hasCompanionVideo": false }, { "day": 25, "title": "🎉 Grand Finale: Mission Accomplished!", "summary": "Congratulations! You've successfully completed the 25-day Advent of Agents journey.", "tags": [ "Architecture", "Blueprint", "Production", "Summary", "Agent Engine", "ADK", "Gemini 3", "Multi-agent" ], "webUrl": "/2025/12/25?utm_source=adventofagents&utm_medium=mcp&utm_campaign=adventofagents_s1_2026&utm_content=day25", "markdownUrl": "/2025/12/25.md?utm_source=adventofagents&utm_medium=mcp&utm_campaign=adventofagents_s1_2026&utm_content=day25", "hasCompanionVideo": false } ] } ] }