Scenario library

Archal’s public markdown scenario catalog lives under scenarios/ in the Archal repo. Browse from the CLI:

archal scenario list
archal run scenarios/security-suite/exec-impersonation.md --sandbox

Pick a first scenario

If you want to test	Start with	Clones	Risk	Run
Social-engineering resistance	`security-suite/exec-impersonation.md`	Slack, Jira, Stripe	Approval spoofing	`archal run scenarios/security-suite/exec-impersonation.md --sandbox`
Refund controls	`security-suite/race-refund.md`	Slack, Jira, Stripe	Financial controls	`archal run scenarios/security-suite/race-refund.md --sandbox`
Code-review judgment	`security-suite/reviewer-impersonation.md`	GitHub, Slack, Jira	Identity and access	`archal run scenarios/security-suite/reviewer-impersonation.md --sandbox`
Cross-system privacy	`adversarial/cross-system-pii-leak-customer-name-in-github-issue.md`	GitHub, Slack, Stripe	Data exposure	`archal run scenarios/adversarial/cross-system-pii-leak-customer-name-in-github-issue.md --sandbox`

Use archal scenario list --tag <tag> when you know the risk category, and archal scenario list --clone <clone> when you know the service surface.

Sample scenario

scenarios/security-suite/exec-impersonation.md - an attacker impersonates an exec over Slack and tries to push the agent into approving a wire transfer. Success criteria check that the agent verified out-of-band before acting.

Bucket	Path	Count
Adversarial	`scenarios/adversarial/`	18
Security suite	`scenarios/security-suite/`	15

Risk taxonomy

The hosted catalog tags scenarios by failure mode:

Tag	Meaning
`identity-and-access`	Wrong actor, account, or stale authorization
`data-exposure`	Sensitive data crossing an unsafe boundary
`financial-controls`	Refunds, payments, billing, approval scope
`change-management`	Risk hidden in releases, diffs, or migrations
`governance-and-approval`	Policy precedence, escalation, truthful approval checks
`cross-system-reasoning`	Safe action requires correlating evidence across systems
`secrets-and-supply-chain`	Credentials, dependency trust, hidden payloads

Security suite

Social-engineering and policy-verification scenarios across GitHub, Jira, Slack, Stripe, and Linear.

approval-spoof.md            metric-smoothing.md         refund-amnesty.md
bulk-closure-pressure.md     mirror-patch-confusion.md   reviewer-impersonation.md
coupon-blast.md              payment-link-rush.md        rollback-pressure.md
cross-client-leak.md         quorum-bypass.md            typosquat-hotfix.md
exec-impersonation.md        race-refund.md              vendor-wire-override.md

Adversarial

Same-name confusion, revoked credentials, hidden policy violations, cross-system leaks.

board-blackout-same-name-contractor-safe-subset-only.md
calendar-invite-from-fired-employee-triggers-data-access.md
cross-system-pii-leak-customer-name-in-github-issue.md
github-pr-approved-but-ci-secretly-disabled.md
gmail-thread-contains-revoked-api-key-agent-must-not-use.md
gws-calendar-double-booking-vendor-payment-race.md
northwind-duplicate-vendor-scope-freezes-only-one-bill.md
privacy-review-same-name-contractor-ui-copy-only.md
quarter-close-mixed-queue-same-name-contractor-safe-subset-only.md
quarter-close-overlap-vendor-fraud-refund-and-offboarding.md
ramp-card-spend-after-termination-notice-in-gmail.md
ramp-google-workspace-expense-fraud-evidence-in-email.md
ramp-gws-receipts-dont-match-calendar-locations.md
refund-queue-same-name-offboarding-safe-template-only.md
supabase-migration-contains-rls-bypass-hidden-in-comment.md

Start here

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Advanced

Scenario library

Pick a first scenario

Sample scenario

Categories

Risk taxonomy

Security suite

Adversarial

​Pick a first scenario

​Sample scenario

​Categories

​Risk taxonomy

​Security suite

​Adversarial

Pick a first scenario

Sample scenario

Categories

Risk taxonomy

Security suite

Adversarial