Blog Deep dives on LLMs, AI agents, and tool calling
We Rebuilt Our Marketing Site with Astro, Claude Code, and Cloudflare. In a couple of evenings.
We replaced Webflow with Astro 5 + Cloudflare Pages in two weeks using Claude Code as the primary builder. 42 pages, 50 PRs — non-engineers ship independently.
Guillaume Lebedel · 
Comparing BM25, TF-IDF, and Hybrid Search for MCP Tool Discovery
Benchmarking BM25, TF-IDF, and hybrid search for MCP tool discovery across 916 tools. The 80/20 TF-IDF/BM25 hybrid hits 21% Top-1 accuracy in under 1ms.
Guillaume Lebedel · 
Indirect Prompt Injection Defense for MCP Tools: A Technical Guide
MCP tools that read emails, CRM records, and tickets are indirect prompt injection vectors. Here's how we built a two-tier defense that scans tool results in ~11ms.
Guillaume Lebedel · 
From Handshake to Integration: Your Complete Guide to Technology Partnerships
Learn how to choose the right partnership model, negotiate effectively, launch with impact, and build integrations that keep customers happy — with practical advice for the agentic AI era.
MCP vs A2A: Choosing the Right Protocol for AI Agents
MCP vs A2A: what each protocol standardizes, how they differ, their shared security risks including indirect prompt injection, and when to use one, both, or a hybrid architecture.
Gartner Says 60% of AI Agent Deployments Will Fail — The Reason Is Integration
Gartner predicts 60% of early agentic AI implementations will fail due to integration gaps. We break down their latest research and show how StackOne's connectivity infrastructure addresses every key recommendation.
Richard South · 
How AI Consultancies Can Get Their Clients' Agents Out of Pilot Purgatory
95% of enterprise AI pilots fail to reach production. The bottleneck isn't models or prompts — it's connectivity. Here's the three-pillar framework consultancies need to deliver agents that actually work.
Richard South · 
Indirect Prompt Injection in MCP Tools: 10 Real Examples & Defenses
See how MCP injection (indirect prompt injection through MCP tool calls) threatens your AI agents across Gmail, Slack, Salesforce and 7 other integrations, with defenses.
Why AI Agents Are Changing the Integration Paradigm for B2B SaaS Platforms
Traditional 'build to us' integration strategies are becoming obsolete. Companies that don't enable their Agents to connect outward risk becoming legacy data sources.
Richard South · 
MCP Code Mode: Keeping Tool Responses Out of Agent Context
Anthropic's code_execution processes data already in context. Custom MCP code mode keeps raw tool responses in a sandbox. 14K tokens vs 500.
Guillaume Lebedel · 
The Trillion-Dollar Wake-Up Call: Make Your Agents More Capable or Become a Legacy Platform
Over $1 trillion in SaaS market value evaporated in a week. The market is pricing in a structural shift: SaaS platforms that can't power connected agents will become backend data sources.
Richard South · 
Unified APIs vs. AI-Native Actions: What AI Agents Actually Need
We built a unified API, then rebuilt it for AI agents. Here's where unified schemas fail for LLMs and why AI-native actions work better.
Guillaume Lebedel · ![The AI Agent Tools Landscape: 120+ Tools Mapped [2026]](/_astro/ai-agent-tools-landscape-2026.D9-zOF-k_VatgH.png)
The AI Agent Tools Landscape: 120+ Tools Mapped [2026]
A comprehensive map of 120+ AI agent tools across 11 categories, from code-first frameworks to enterprise platforms.
Romain Sestier · 
AI Agents Meet Gamma: Automating Presentations with StackOne Connectors
Two real examples of how we use Gamma with AI Agents at StackOne -- from prepping sales decks to presenting company structure -- all powered by StackOne connectors.
Richard South · 
Building Semantic Search with Enhanced Embeddings
Adding semantic search to 10,000+ connector actions using synonym-enriched embeddings and Turbopuffer. Benchmarks, architecture, and results.
Will Leeney · 
Beyond the Lab: Solving the Context Gap to Scale Enterprise AI Agents
Most AI agents are stuck in the lab phase. The missing piece isn't intelligence — it's context. Here's how to bridge the gap between pilot and production.
Richard South · 
Your Agent Toolkit: MCP Server, SDK-based Toolset, or Both?
MCP promises standardization but framework support varies wildly. SDKs give control but mean vendor lock-in. The hybrid approach fills gaps that pure options leave open.
Guillaume Lebedel · 
Automating Meeting Sharing with Claude Code + a Custom Fireflies MCP
How I built a Fireflies connector in 10 minutes and used it to share several months of customer calls with my team using Claude Code and StackOne's AI Connector Builder.
Romain Sestier · 
Agent Suicide by Context
Agents take actions that kill their own context windows. Most don't even know they're doing it.
Guillaume Lebedel · 
Notion MCP Deep Dive: Understanding the Official Connector and When You Need More
A technical comparison of the official Notion MCP versus extended tooling for production AI agent workflows.
Romain Sestier · 
MCP: What's Working, What's Broken, and What Comes Next (what a year in production has taught us)
What a year in production has taught us about the Model Context Protocol -- from authentication gaps to Code Mode and the Linux Foundation transfer.
Guillaume Lebedel · 
Building an Agentic Researcher
How StackOne built a self-improving agentic researcher that continuously discovers AI agent integration use-cases online and refines its search queries over time using Slack reaction feedback and DSPy optimization.
Will Leeney · 
How to Integrate with Workday Learning via SOAP API
If you're looking to build a Workday Learning integration to push content and completions to Workday you will need to use the SOAP API, this guide covers the basics - from authentication and permissions to managing learning content and completions sync.
Max Strivens · 
When Your AI Agent Needs Contractors, Not Apprentices: Building Async Subagents
Explores the difference between using apprentice-like tools versus contractor-style independent agents for handling specialized tasks.
Nicolas Belissent · StackOne named a Gartner Cool Vendor in HR Technology 2025
StackOne has been recognized by Gartner as a Cool Vendor in HR Technology 2025 for innovative products that strengthen the employee experience.
Romain Sestier · 
Building an Eval-Driven AI Feature at StackOne
Integrations break. Our new AI agent translates cryptic provider errors into clear fixes. How we built it -- and why starting with evals on day one made all the difference.
Will Leeney · 
Bring AI Agents to Work with StackOne
How StackOne is solving the challenge of connecting AI agents to perform actions across complex enterprise software stacks.
Matt Carey · 
Announcing StackOne Documents API - a unified API and File Picker for your customers' knowledge
Integrate once to access every customer document - across cloud storage and knowledge bases - with a native picker and real-time, privacy-first architecture.
Romain Sestier · 
Rethinking MCP: From App to Workflow Servers
After spending months building and using MCP servers for daily tasks, exploring decoupling tools from traditional app-based servers to allow bundling tools into workflow-specific servers.
Bryce Tozer · My Dream AI Client
After months of deeply using different AI clients, identifying key product features that would make the ideal AI client.
Bryce Tozer · A New Direction for Tool Orchestration
Discover how Mastra gave us the control we needed to scale API integrations with AI.
Nicolas Belissent · 
Announcing our $20M Series A Led by GV (Google Ventures) to Power the Universal Integration Layer
$20 million Series A funding round led by Google Ventures, with participation from Workday Ventures and XTX Ventures, to continue building a Universal Integration Layer for B2B SaaS and Agents.
Romain Sestier · 
Tools not Rules
How MCP is helping us build a more adaptable agent.
Nicolas Belissent · 
Automating tasks with MCP
How StackOne uses MCP servers and tools to automate internal tasks such as raising Jira tickets.
Bryce Tozer · 
StackOne ToolSet: Enabling Agentic Integrations for Hundreds of Enterprise SaaS
Introducing the StackOne ToolSet, an open-source, experimental SDK tailor-made for AI agent development.
Matt Carey · 
Announcing StackChat - the most advanced API Assistant
Announcing StackChat: the most advanced API knowledge agent.
Guillaume Lebedel · 
Announcing StackOne's IAM unified API: Retrieve Comprehensive Data on User Access Across More than 80 SaaS Applications
Unveiling the latest unified API: IAM, allowing deeper integration into customers' HR tech stack with access data across 80+ SaaS applications.
Romain Sestier · 
Navigating The Shift From Features To Outcomes In SaaS
There's been a significant shift in buyer priorities, moving from features and functions, to outcomes.
Romain Sestier · 
Why Privacy And Real-Time Are Non-Negotiable When Integrating with HRIS
Exploring the key reasons why real-time provisioning and offboarding is crucial for HRIS integration.
Romain Sestier ·