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Performance · hard

40. Static Cost Analysis & Execution Limits

Predictable gas costs and runtime safety.

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Clarity code execution cost (CPU, memory, runtime, write length) is computed deterministically. If a contract exceeds block limits, it is rejected before execution.

clarity
;; ::get_costs command in Clarinet REPL

How to study this topic

  1. 1. Read the explanation once end to end, skipping the code.
  2. 2. Re-read the code snippets and say out loud what each line does.
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Check your understanding

  1. 1. What allows the Stacks node to know the exact execution cost of a Clarity contract beforehand?

  2. 2. What tool is used in the Clarity ecosystem for local testing and cost analysis?

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