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simulateExecution

Simulate a full transaction execution on any supported network to obtain detailed call traces, logs, and return data for debugging and analysis.

Instructions

Simulate full transaction execution and get detailed call traces, logs, and return data

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
networkNoNetwork ID. Call listSupportedNetworks for all options. e.g. "eth-mainnet", "base-mainnet"eth-mainnet
transactionYesTransaction object to simulate
Behavior2/5

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

With no annotations, the description alone must disclose behavioral traits. It states 'simulate', hinting at a dry run, but does not explicitly confirm no real transaction is sent, nor mention authentication needs, rate limits, or error behavior. Critical gaps exist.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness5/5

Is the description appropriately sized, front-loaded, and free of redundancy?

Single sentence with no redundancy, front-loading the key verb and outcome. Every word adds value, and the structure is efficient and clear.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness2/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

Despite good schema coverage, the description fails to explain return structure or behavioral context (e.g., gas estimation, local simulation flag). With no output schema, the description should bridge this gap, but it does not.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters3/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Schema coverage is 100%, so baseline is 3. The description adds no parameter-specific semantics beyond what the schema already provides; it only contextualizes the overall purpose. Value added is minimal.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose5/5

Does the description clearly state what the tool does and how it differs from similar tools?

The description clearly states the verb 'simulate' and the resource 'full transaction execution', and specifies the output: 'detailed call traces, logs, and return data'. It distinguishes from siblings by emphasizing comprehensiveness, differentiating from asset change or trace-only tools.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines3/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

The description does not explicitly guide when to use this tool over alternatives like simulateAssetChanges or traceCall. The phrase 'full transaction execution' implies a complete simulation, but no direct comparison or exclusions are provided, leaving the agent to infer usage context.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

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