feat(validator): add mail-adapter privacy-boundary check #694
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…SOFT advisory) contract:mail-source and contract:mail-archive adapter READMEs must declare that fetched mail content is external data (not instructions) and mention the prompt-injection risk in embedded mail content. Both are SOFT advisories. Co-authored-by: Justin McLean <justin@classsoftware.com>
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Summary
Add check #17 to skill-and-tool-validator: contract:mail-source and
contract:mail-archive adapter READMEs must declare (a) that fetched
mail content is external data, not instructions, and (b) that
embedded prompt-injection text in mail bodies is surfaced as report
data only, never obeyed. Both sub-checks are SOFT advisories.
Add ## Security and privacy sections to tools/gmail/, tools/ponymail/,
tools/mail-source/, and tools/mail-archive/ so all four live adapters
pass the new check with zero violations.
Add 18 unit tests in TestMailPrivacyBoundary covering: passing
READMEs for contract:mail-source and contract:mail-archive; missing
data-posture advisory; missing injection-risk advisory; both missing;
mail-draft-only not checked; non-mail contract not checked; the
prompt-injection-in-email fixture; redact-keyword variant; category
soft-category and all-violations-have-correct-category checks.
Spec: tools/spec-loop/specs/adapters.md
Generated-by: Claude (Opus 4.7)
Type of change
.claude/skills/<name>/) — eval fixtures updated belowtools/<system>/*.md)tools/*/withpyproject.toml)docs/,README.md,CONTRIBUTING.md)projects/_template/)prek, workflows, validators)Test plan
prek run --all-filespassesuv run pytest/ruff check/mypypasses(
PYTHONPATH=tools/skill-evals/src python3 -m skill_evals.runner tools/skill-evals/evals/<skill>/)(a regression test for the bug fixed / the behaviour added — see CONTRIBUTING.md)