Repeatability
Medium
The structural pattern — supervision tree refactor, circuit breaker, backpressure, unit tests — is a known template in Elixir/OTP. However, the specific topology depends on the existing codebase's shape, which varies every time and requires reading real code before acting.
Ambiguity Tolerance
Low
Success criteria are underspecified: 'graceful disconnect handling,' 'backpressure,' and 'circuit breaker' each have multiple valid implementations with meaningfully different tradeoffs. The agent cannot know which design fits this team's operational model without more context.
Data & Tool Availability
Medium
The agent needs access to the existing connection handler source, supervision tree, and test suite — none of which are provided. Without the actual codebase, the agent is writing against assumptions, which raises integration risk significantly.
Error Cost
High
A flawed supervision tree or incorrect backpressure implementation on a live SaaS WebSocket service can cause cascading process crashes, connection drops for all 500 users, or worse memory leaks than the original bug. Damage is real and partially irreversible in terms of user trust.
Human Judgment Required
High
Choosing the right OTP restart strategy, circuit breaker thresholds, and reconnect storm mitigation approach requires understanding the business SLA, acceptable downtime, and operational runbook — context that lives in engineers' heads, not in the task description.