mission.md

Mission - Scope Contracts and Task Boundaries

Goal

Write a per-task scope_contract.json and a glob-aware checker that compares the agent's diff against the contract and flags any forbidden or off-scope writes.

Inputs

• A task description with allowed globs, forbidden globs, acceptance commands, rollback paragraph, approvals required
• Two demo runs: one that stays in scope, one that creeps

Deliverables

• scope_contract.json schema validator (subset of JSON Schema, glob arrays)
• A diff parser that produces a RunSummary from touched files plus commands run
• scope_check(contract, run) -> (violations, in_scope, off_scope)
• scope_report.json saved next to the script

Acceptance

• python3 code/main.py exits zero
• The in-scope run reports zero violations
• The creeping run reports the exact off-scope files and the reason for each

Out of scope

• Time budgets, network egress allowlists. The lesson ships file globs; the exercise prompts extend it.
• Wiring into a runtime interrupt. The lesson exits at the report.

References

• docs/en.md - full lesson
• code/main.py - reference implementation
• outputs/skill-scope-contract.md - extracted skill