eval

name	eval
description	This skill should be used when the user asks to "evaluate Wolfram code", "run this Wolfram expression", or invokes /wolfram-hart:eval directly. It executes Wolfram Language code through the plugin's eval script.
version	1.1.0
argument-hint	<wolfram-code> [timeout]
allowed-tools	Bash(bash:*), Read
disable-model-invocation	true

Execute the following Wolfram Language code through the plugin's eval script:

$ARGUMENTS

Execution steps:

0. If $ARGUMENTS is empty or contains only whitespace, do not invoke the script. Tell the user: "No Wolfram code provided. Usage: /wolfram-hart:eval <wolfram-code> [timeout]" and show a brief example like /wolfram-hart:eval Solve[x^2 == 4, x].

1. Parse the input. If the last whitespace-separated token is a bare integer >= 10 (e.g. 60, 120), treat it as a timeout override in seconds; everything before it is the Wolfram code. Otherwise, the entire input is the code and the default 30-second timeout applies. This threshold avoids misinterpreting small numbers that are part of the Wolfram expression itself.

   If no explicit timeout is provided, the script uses the WOLFRAM_TIMEOUT environment variable (settable via /wolfram-hart:setup), falling back to 30 seconds.

2. Run the code through the wrapper script:

bash ${CLAUDE_PLUGIN_ROOT}/skills/wolfram-hart/scripts/wolfram-eval.sh '<code>' [timeout]

Use single quotes around the code. If the code contains derivative apostrophes (y'[x]), switch to double quotes and escape inner double quotes with \" and dollar signs with \$ (e.g. \$VersionNumber).

3. Interpret the result:

   • If exit code 0 and stdout is empty: the code ran but produced no output. Tell the user this usually means the final expression evaluates to Null (e.g. because it ends with a semicolon). Suggest removing the trailing semicolon.
   • If stdout is a file path (from Export), use the Read tool to display the image.
   • If stdout contains ---WARNINGS---, separate the result from warnings and present both.
   • If exit code 1: wolframscript is not installed. Run bash ${CLAUDE_PLUGIN_ROOT}/skills/wolfram-hart/scripts/wolfram-check.sh and relay install instructions.
   • If exit code 2: execution error. Show the error and suggest corrections.
   • If exit code 3: timeout. Suggest increasing the timeout or simplifying the code.
   • For any other non-zero exit code: report the exit code and any stderr output. Suggest running /wolfram-hart:check to verify the installation.

4. Present the result directly. Do not add extra commentary unless there is an error or warning to explain.