agent engineeringnextmental model
Route tools with inspectable traces
Design constrained runtime routing across validators, diagnosis, marking, and hint paths without granting the model authority it does not own.
- Stable ID
sprint.runtime-routing- Item version
- 1.0.0
- Time
- 110 min
- Status
- ready
Reading lens
Focus
- runtime routing
- structured tool calls
- trace inspection
- verifier and fail-closed states
Ignore for now
- autonomous planning
- multi-agent conversation
- calling a static chain an agent
Canonical sources
Open the material
Before reading
Which runtime branch choices would justify the term agent, and what trace would prove them?
After reading
Sketch a trace that shows routing, tool inputs, tool outputs, verifier decisions, and final authority labels.
Knowledge check
When does this workflow earn the label agent?
Write an answer to unlock the reference
Only when runtime conditions route across multiple tools or paths and the chosen route, structured calls, outputs, and verifier decisions are inspectable. A fixed prompt chain or static workflow is insufficient.
ACCEPTED_DECISION · Matches the repository's explicit naming rule.Working notes