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GAP-SUBOBS-003: Per-Subagent Token and Cost Tracking reference

Track token usage and estimated cost per dispatched subagent effect. Aggregate at run and session level.

Pagewiki/docs/harness-features-backlog/gaps/subagent-observability/GAP-SUBOBS-003.mdOutgoing · 0Incoming · 1

GAP-SUBOBS-003: Per-Subagent Token and Cost Tracking

Field	Value
Category	subagent-observability
Priority	High
Effort	M
Status	Missing

Description

Track token usage and estimated cost per dispatched subagent effect. Aggregate at run and session level.

Current State

tokens:stats tracks run-level tokens. No per-effect or per-subagent breakdown.

Target State

Token usage and cost tracked per effect. Aggregated at run and session level. Visible in embedded SDK dashboard with per-effect cost breakdown. Cost anomaly detection for expensive effects.

Dependencies

GAP-SUBOBS-001 -- streaming output for token extraction

Key Files

Component	Path
Token stats	`packages/sdk/src/cli/`
Task definitions	`packages/sdk/src/tasks/`
Embedded SDK dashboard (new)	`packages/sdk/src/dashboard/`

Recommendation

Phase 2 implementation. Capture token counts from harness output per effect. Aggregate at run and session level. Display in embedded SDK dashboard.