What problem does it solve? When a spec is written but key capabilities still lack a proven implementation path, teams risk planning on unverified assumptions. This Skill closes that gap by coordinating structured feasibility research, evidence collection, and disposable prototype spikes before implementation planning begins. ## Core Features & Use Cases - Multi-Track Research Orchestration: Decomposes feasibility questions into independent research tracks dispatched to subagents, each returning structured evidence packets with confidence levels and planning implications. - Disposable Demo Spikes: Builds isolated proof-of-concept spikes under research-spikes/ to validate uncertain implementation chains without touching production code. - Traceable Planning Handoff: Produces deep-research.md with stable IDs (CAP, TRK, EVD, SPK, PH) and an evidence quality rubric so /sp-plan can cite exactly which finding supports each design decision. - Use Case: Before planning a feature that depends on an unfamiliar third-party API, run this Skill to verify the API's constraints, spike a minimal integration, and hand the planner a proven approach with rejected alternatives documented. ## Quick Start Ask the agent to run /sp-deep-research with a description of the feasibility question or research tracks needed before planning handoff.
