AI
harness
the code around the model that executes tools
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Agents and Tool UseAIMore terms from this board
- agentan LLM that uses tools in a loop toward a goal
- agent loopthink → act → observe → repeat (ReAct)
- brittlenessloops/stuck/compounding errors
- Claude Code / this assistantan agent (tools: read/write/bash/canvas + loop)
- grounding/computation/action/memorywhat tools add
- guardrailslimits, human approval, verification
- MCP (Model Context Protocol)a standard tool/data interface ('USB-C for AI')
- multi-agentspecialized agents collaborating / dispatched in parallel
- planningdecompose a goal into steps
- reliabilitythe current frontier
- structured outputforce valid JSON matching a schema
- tool / function callingthe model emits a structured request; the harness runs it
- tool schemaname/params
- tool serverexposes tools over MCP