stress-test— agent skill

Execute all four phases in order.

Phase 1 — Fuzzer

Write a script that sends the following inputs to the target function:

• 1GB string payloads
• null, undefined, NaN, -1, Infinity
• Deeply nested recursive JSON (depth >1,000)
• Malformed Unicode strings (\uFFFD, null bytes, RTL override characters)
• Simulated network drops or database timeouts via mocked I/O

Phase 2 — Attack

Run the fuzzer. For each failure, document:

• The exact input that caused the failure
• The failure mode: unhandled exception, memory exhaustion, infinite loop, or incorrect output without error

Phase 3 — Hardening

For every documented failure:

1. Add input validation at the function boundary. Reject invalid input immediately with a typed error.
2. Add pagination or streaming for inputs that exceed a byte threshold.
3. Add a circuit breaker or retry-with-exponential-backoff for every network and database dependency.

Phase 4 — Report

Re-run the full fuzzer. For every input that previously caused a crash, show the new response.

Zero crashes is the target.