Facio Blog

Practical notes on human-reviewed AI agents.

Payload-powered product notes, security writing, HITL patterns, and operational guidance from the Facio runtime: long sessions, Placet approvals, audit trails, memory, providers, channels, tools, and Docker-first operations.

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Showing 16-20 of 62 articles in Engineering.

Engineering

MCP Spotlight: Time MCP Server — The Anthropic Reference for Reliable IANA Timezone Math, Stopping the "Today's Date Is Tuesday" Hallucination Class

Jul 6, 2026Engineering

MCP Spotlight: Time MCP Server — The Anthropic Reference for Reliable IANA Timezone Math, Stopping the "Today's Date Is Tuesday" Hallucination Class

The official Time MCP Server by Anthropic — two tools (get_current_time, convert_time), IANA timezone database, DST-aware, ISO 8601 output, MIT-licensed. The ground-truth time primitive that eliminates the "today is Tuesday" hallucination class. Available via uvx, Docker (mcp/time), or pip.

Engineering

MCP Spotlight: Fetch MCP Server — The Anthropic Reference for Safe HTML-to-Markdown Web Fetching With URL Allow-Lists and the Read-Only Default

Jul 5, 2026Engineering

MCP Spotlight: Fetch MCP Server — The Anthropic Reference for Safe HTML-to-Markdown Web Fetching With URL Allow-Lists and the Read-Only Default

The official Fetch MCP Server by Anthropic — one tool (fetch), read-only by design, HTML→Markdown conversion with raw/JSON modes. MIT-licensed, available as NPX package or Docker image. The read-only web access default for AI agents in 2026.

Engineering

MCP Spotlight: GitHub MCP Server — The Official, OAuth-2.0-Enabled Bridge to Issues, PRs, Code, Actions, and the Entire Software-Engineering Workflow

Jul 4, 2026Engineering

MCP Spotlight: GitHub MCP Server — The Official, OAuth-2.0-Enabled Bridge to Issues, PRs, Code, Actions, and the Entire Software-Engineering Workflow

The official GitHub MCP Server by GitHub — ~90+ tools covering the full software-engineering lifecycle (issues, PRs, code, Actions, discussions, search, security). OAuth 2.0 + GitHub App + Personal Access Token support, MIT-licensed. The software-engineering default for AI agents in 2026.

Engineering

MCP Spotlight: Docker MCP Toolkit + Catalog + Gateway — The Reference Stack for Running, Curating, and Discovering MCP Servers at Scale

Jul 3, 2026Engineering

MCP Spotlight: Docker MCP Toolkit + Catalog + Gateway — The Reference Stack for Running, Curating, and Discovering MCP Servers at Scale

Docker's MCP Toolkit + Catalog + Gateway + cagent — the reference infrastructure stack for running 300+ MCP servers at scale. Dynamic discovery (mcp-find), on-demand install (mcp-add), per-tool execution (mcp-exec), container-isolated execution, signature verification, credential brokering, per-tool RBAC, multi-agent orchestration. Apache 2.0.

Engineering

MCP Spotlight: Notion MCP Server — The Markdown-First Knowledge Bridge With Database API v2, OAuth 2.0, and the Documentation/Project Hub Default for Agents

Jul 2, 2026Engineering

MCP Spotlight: Notion MCP Server — The Markdown-First Knowledge Bridge With Database API v2, OAuth 2.0, and the Documentation/Project Hub Default for Agents

The official Notion MCP Server — ~17 tools covering pages, databases, Data Sources (v2 API), blocks, comments, users, and search. OAuth 2.0 + Internal Integration Token support, Markdown-friendly output, MIT-licensed. The knowledge + project hub + documentation default for AI agents in 2026.