Learn

Field notes on practical agent systems.

The learning side of Field Agents: concepts, tools, approval gates, evals, memory, MCP, and production patterns. If you need a specialized system for your business, apply with a workflow.

Read all posts →Browse tools

Foundations

Mental models, agent loops, evaluation primitives.

MCP

Model Context Protocol: resources, tools, prompts, servers.

Tools

Tool schemas, side effects, approvals, and sandboxes.

Workflows

Multi-step orchestration, planning, branching, recovery.

Production

Observability, cost control, safety, and rollout.