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kh6570
by kh6570

Prepare Ic

prepare_ic

Insert a .ic directive into an LTspice schematic to define initial conditions for simulation nodes.

Instructions

Insert a .ic directive.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
assignmentsYes
schematic_pathYes
workspace_rootNoOptional per-call workspace root override.

Schema Changelog

Changes observed during successful MCP inspections.

  1. First observedv0.0.1

TDQS

C2/5.0
Behavior2/5

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

Annotations declare readOnlyHint=false and idempotentHint=false, so the agent knows this mutates state and may not be safe to repeat, but the description adds nothing beyond 'insert' — not where the directive is written, whether an existing .ic is replaced or duplicated, or what happens to the schematic. With annotations only supplying bare flags, the description's near-total silence is a real gap.

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

Conciseness2/5

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

One fragment of a sentence with stray double-backtick markdown artifacts. It is not concise-but-complete; it is under-specified, leaving the agent with less information than it needs to call the 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?

For a mutating tool with no output schema, two undocumented required parameters, and only flag-level annotations, the description should carry far more weight. It explains neither the directive's semantics nor its insertion behavior, so an agent cannot confidently invoke it.

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

Parameters2/5

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

Schema description coverage is 33% — only the optional workspace_root is documented. The two required parameters, assignments and schematic_path, are undocumented in both schema and description; notably the assignments string format (e.g., 'V(out)=0') is never specified, and the description does not compensate for that gap.

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

Purpose2/5

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

The description essentially restates the name and title: 'prepare_ic' / 'Prepare Ic' becomes 'Insert a .ic directive.' It names a verb and a token, but '.ic' is never explained (initial-condition directive for transient analysis), so an agent unfamiliar with SPICE learns nothing. It also does nothing to distinguish itself from the many sibling prepare_* directive tools.

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?

There is no when-to-use guidance, no prerequisites (e.g., a schematic must already exist), and no mention of alternatives such as prepare_nodeset or prepare_transient, which are the closest siblings. The agent is left to infer everything from the tool name.

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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