Compiler Explorer
by compiler-explorer · remote · no sign-in to list tools · v1.0.0 · published by GitHub user compiler-explorer
Compile code with thousands of compilers, inspect the assembly, and share godbolt.org links
7 tools: 2 change things and 5 only read.
Scanned Oct 21, 2026
- Deletes or cancels0Claude Code: deny
- Can't be undone0Claude Code: ask
- Changes things2Claude Code: ask: see these tools
- Only reads5Claude Code: allow: see these tools
No check matched anything in the tool definitions. No finding is not a safety guarantee. How the checks work.
claude mcp add --transport http compiler-explorer https://godbolt.org/mcpTools
Open a tool for its reasons and full description. Descriptions are the publisher's own words, shown as they are.
7 tools
Changes things 2Claude Code: ask
compileCompile source code and return assembly output, stdout, and stderrNo findings
Why it is in this group
- Nothing in its name or description says what it does, so it is counted as a write.
- The server marks it read-only (readOnlyHint: true), but an annotation never lowers a class.
Description, as the server wrote it Compile source code and return assembly output, stdout, and stderr
Annotations the server declares
- title: Compile (and optionally execute) source code
- readOnlyHint: true
- openWorldHint: false
generate_short_urlCreate a Compiler Explorer short URL for sharing code with compiler settingsNo findings
Why it is in this group
- The name "generate_short_url" says "generate": a word for a change.
Description, as the server wrote it Create a Compiler Explorer short URL for sharing code with compiler settings
Annotations the server declares
- title: Generate Compiler Explorer short URL
- readOnlyHint: false
- destructiveHint: false
- idempotentHint: true
- openWorldHint: false
Only reads 5Claude Code: allow
get_shortlink_infoRetrieve source and compiler config from a CE short URL.No findings
Why it is in this group
- The name "get_shortlink_info" says "get": a word for reading.
Description, as the server wrote it Retrieve source and compiler config from a CE short URL. Compiler entries are returned in the `compile` tool's shape ({compiler, options, libraries:[{id, version}]}). Multi-pane shortlinks (executors, conformance views, CMake trees, per-compiler filters/tools) are flattened — only the basic compile inputs survive.
Annotations the server declares
- title: Get Compiler Explorer short URL info
- readOnlyHint: true
- openWorldHint: false
list_compilersList available compilers, optionally filtered by languageNo findings
Why it is in this group
- The name "list_compilers" says "list": a word for reading.
Description, as the server wrote it List available compilers, optionally filtered by language
Annotations the server declares
- title: List compilers
- readOnlyHint: true
- openWorldHint: false
list_languagesList supported languages.No findings
Why it is in this group
- The name "list_languages" says "list": a word for reading.
Description, as the server wrote it List supported languages. Each entry has `defaultCompiler` and `compilerCount`.
Annotations the server declares
- title: List languages
- readOnlyHint: true
- openWorldHint: false
list_librariesList available libraries for a given programming languageNo findings
Why it is in this group
- The name "list_libraries" says "list": a word for reading.
Description, as the server wrote it List available libraries for a given programming language
Annotations the server declares
- title: List libraries
- readOnlyHint: true
- openWorldHint: false
lookup_asm_instructionLook up documentation for an assembly instructionNo findings
Why it is in this group
- The name "lookup_asm_instruction" says "lookup": a word for reading.
Description, as the server wrote it Look up documentation for an assembly instruction
Annotations the server declares
- title: Look up assembly instruction
- readOnlyHint: true
- openWorldHint: false
This is not a safety rating, and no finding is not a safety guarantee. The groups and findings come from fixed checks of the tool definitions the server returned on the date shown, not from its code or what it does when called. How the checks work.
Install
Pinned to version 1.0.0. Values in angle brackets are yours to fill in.
claude mcp add --transport http compiler-explorer https://godbolt.org/mcpRun in a terminal.
Claude Code permissions
Allow the reads, ask before a change, deny the deletes. Paste into .claude/settings.json.
{
"permissions": {
"allow": [
"mcp__compiler-explorer__list_compilers",
"mcp__compiler-explorer__list_languages",
"mcp__compiler-explorer__list_libraries",
"mcp__compiler-explorer__lookup_asm_instruction",
"mcp__compiler-explorer__get_shortlink_info"
],
"ask": [
"mcp__compiler-explorer__compile",
"mcp__compiler-explorer__generate_short_url"
],
"deny": []
}
}Tools that only read are allowed, tools that change things ask first, tools that delete or cancel are denied. It assumes the server is installed as compiler-explorer. Review it before you use it.