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ahopo

json-promptor-mcp

by ahopo

edit_prompt_json

Update a field in a structured JSON prompt—like purpose or audience—by providing the prompt, field, and new value.

Instructions

Edit a field in an existing structured JSON prompt

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
structured_promptYesThe structured JSON prompt as a JSON string
fieldYesThe field to edit
valueYesThe new value for the field
Behavior2/5

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

No annotations provided. The description indicates mutation ('Edit a field'), but does not disclose return value, validation, side effects, or persistence. This is insufficient for an editing tool.

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?

A single sentence of 9 words, front-loaded with the action, concise and free of unnecessary information.

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?

The description lacks information on return value, validation rules, or error conditions. Given no output schema and annotations, the agent cannot fully anticipate behavior.

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%, so the schema already documents each parameter. The description adds no extra meaning beyond repeating the purpose, meeting the baseline for full coverage.

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 tool edits a field in an existing structured JSON prompt, using a specific verb and resource. It distinguishes from the sibling tool 'convert_prompt_to_json', which likely converts to JSON.

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 implies usage for modifying a single field, but does not explicitly mention when not to use it or suggest alternatives like 'convert_prompt_to_json' for conversion tasks.

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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