Pink data: 3 AI agents, 40 concurrent payments, one $6,000 daily limit. Did it hold?

Description and use

The test demonstrated that concurrent payment requests from three AI agents are correctly limited by the shared daily ceiling of $6,000, preventing overspending.

Problem

Determine whether concurrent payment requests from multiple AI agents can exceed a shared company daily spending ceiling in the Pink Agentic AI Payments system.

Outcome

In all three runs, the total allowed payments matched the server’s company_spent_today and never exceeded the $6,000 ceiling. Blocked requests consistently cited the shared ceiling rule.

Workflow

• 1. Set up sandbox with coffee template (3 agents, $6,000 company_daily_ceiling).
• 2. Configure agents a_purch, a_inv, a_pay with high monthly budgets and per-payment caps to isolate the shared ceiling rule.
• 3. Fire 40 POST /v1/payments requests concurrently from all agents using a single thread pool with no delay.
• 4. Record client-side responses: count allowed vs blocked and sum of allowed amounts.
• 5. Query server via GET /v1/budget to obtain company_spent_today.
• 6. Verify that client allowed sum equals server company_spent_today and does not exceed the ceiling.
• 7. Inspect blocked responses for rule and why fields to confirm shared ceiling enforcement.
• 8. Repeat the test three times (two with day reset, one fresh workspace).
• 9. Use public script 11-shared-ceiling-test for reproducibility.

Evidence

In every run, the client-side allowed sum matched the server's own company_spent_today exactly, and the total never went over the $6,000 ceiling.

Source

Every single blocked request across all three runs cited the shared ceiling specifically, not a per-agent rule.

Source

The why text shows a running total that increments across requests from different agents (a_purch, a_inv, a_pay all draw against the same counter).

Source