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SohailShabbir867

n8n Automation MCP Server

retry_execution

Retry a failed n8n execution using its original workflow definition. Provide the execution ID to re-run with the current version from database.

Instructions

Retry a failed execution using the workflow definition.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
idYesFailed execution ID to retry
loadWorkflowFromDbNoWhether to retry using current workflow version from database
Behavior2/5

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

Annotations only indicate readOnlyHint=false, so the description carries the burden of explaining behavioral impact. It does not disclose side effects, whether a new execution is created, or any required permissions, providing minimal transparency.

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?

The description is a single sentence that front-loads the action and includes no redundant wording. It is concise and well-structured for a simple tool.

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?

Without an output schema, the description should clarify return values and post-conditions, but it does not. As a mutation tool with minimal annotations, this leaves the agent without critical context.

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 description coverage is 100%, with both parameters already documented in the schema. The tool description adds no parameter-specific meaning, so the baseline score of 3 is appropriate.

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 uses the verb 'Retry' with the resource 'execution' and specifies 'using the workflow definition', which clearly distinguishes it from sibling tools like run_workflow or stop_execution. It is specific and unambiguous about what the tool does.

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

Usage Guidelines2/5

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

The description provides no when-to-use or when-not-to-use guidance. It states it retries failed executions but does not mention alternatives or prerequisites, leaving the agent to infer usage from the word 'failed'.

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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