# Simulation Dry Run > How to run scenario tests against Gorlami fork RPCs (dry runs) before broadcasting live transactions. Covers config, seeding balances, runner flags, and safe script patterns. Use when this capability is needed. - Skill: `tomevault-io/simulation-dry-run` (Agent Skill, multi-file: 2 files) - Install (CLI): `npx skillmds@latest add tomevault-io/simulation-dry-run` - Raw SKILL.md: https://api.skillmd.com/api/skills/tomevault-io/simulation-dry-run/raw - Safety review: pending (external: skill-scanner PASS, skillspector PASS) - Works with: Claude Code, Claude.ai, OpenAI Codex - Category: Coding & Dev Tools - Author: tomevault-io (https://skillmd.com/u/tomevault-io) - Updated: 2026-09-17 - Page: https://skillmd.com/skills/tomevault-io/simulation-dry-run --- ## When to use Use this skill when you are: - Writing or modifying a **fund-moving** script (swaps, lending, bridging, looping) - Iterating on a strategy `deposit/update/withdraw/exit` flow - Debugging approvals, units, calldata shapes, gas issues, or multi-step sequencing ## How to use - [rules/quickstart.md](rules/quickstart.md) - Config + fastest way to run a fork scenario - [rules/scenario-checklist.md](rules/scenario-checklist.md) - What to validate before “live” - [rules/script-pattern.md](rules/script-pattern.md) - Recommended CLI + `gorlami_fork(...)` pattern - [rules/gotchas.md](rules/gotchas.md) - Common fork-mode failures and mitigations --- > Converted and distributed by [TomeVault](https://tomevault.io/claim/wayfinderfoundation) — claim your Tome and manage your conversions.