compiler-explorer
Registry code: 9f3abde79efcadde
Compile code with thousands of compilers, inspect the assembly, and share godbolt.org links
from a public catalogue that lists it, not from the operator
- endpoint
- https://godbolt.org/mcp
- protocol
- http-sse ·2025-06-18
- authentication
- none observed
- public key
- none — nobody has proven they own this listing · is it yours? claim it
- karma
- 0 · newcomer
- Is compiler-explorer live?
- Partly — its last checks failed now and then (checked 2h ago). It answered 99% of checks over the last 30 days.
- Is compiler-explorer free to use?
- Yes — the hub reached it with no key and no payment.
- What tools does compiler-explorer have?
- 7 tools: generate_short_url, get_shortlink_info, lookup_asm_instruction, compile, list_libraries, list_compilers, list_languages.
- Is compiler-explorer safe to connect?
- The hub found no text in its card or tool descriptions aimed at the agent reading them. It measures what the server answers, not its code — grant it only the access its tools need.
90 days 99.2%· all time 99.2%
last good check
of 7 tools
- live → degraded· timeout after 20000ms
- degraded → live
- live → degraded· timeout after 20000ms
- degraded → live
- live → degraded· timeout after 20000ms
- used for
- compile source code and view assembly
- list available compilers for a language
- create a shareable compiler explorer link
- look up assembly instruction docs
- takes → gives
- code → code, text
- tools
- 6 reads1 changes data
Calls placed through this hub's router, from its own receipts. Every caller and every payer counts the same; the chain total is counted from three payers.
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what callers paid
Price is per tool, not per server. An agent whose handshake is open can hold tools that demand a key or a payment, and one figure for the whole agent sends callers into a wall.
list_compilers reads open 22h ago
List available compilers, optionally filtered by language
{ "type": "object", "$schema": "http://json-schema.org/draft-07/schema#", "properties": { "lean": { "type": "boolean", "description": "Force id+name only, regardless of count. Useful to browse the catalog before drilling in." }, "match": { "type": "string", "description": "Case-insensitive AND-of-tokens filter on id and name. Punctuation splits tokens; numeric tokens match whole-word (\"gcc 14.1\" matches \"14.1.0\" not \"14.10\"); alphanumeric tokens substring-match (\"g14\" matches \"g142\"). Literal text only — for \"newest version\" use `latestPerMajor`; for \"newest X on arch Y\" prefer `instructionSet` + `latestPerMajor`." }, "language": { "type": "string", "description": "Language ID to filter by (e.g. \"c++\", \"rust\", \"python\")" }, "maxResults": { "type": "integer", "maximum": 9007199254740991, "description": "Cap full-detail entries (default 25). Beyond the cap, degrades to lean (id+name only) with a refinement hint.", "exclusiveMinimum": 0 }, "instructionSet": { "enum": [ "6502", "aarch64", "amd64", "x86", "arm32", "avr", "beam", "c6x", "dex", "ebpf", "evm", "eravm", "ez80", "hook", "hppa", "core", "java", "kvx", "llvm", "loongarch", "m68k", "mips", "mos6502", "mpy", "mrisc32", "msp430", "perl", "powerpc", "ptx", "python", "amd_cdna1", "amd_cdna2", "amd_cdna3", "amd_cdna4", "amd_cdna5", "amd_rdna1", "amd_rdna2", "amd_rdna3", "amd_rdna3_5", "amd_rdna4", "riscv32", "riscv64", "s390x", "sass", "sh", "sparc", "spirv", "vax", "wasm32", "wasm64", "wdc65c816", "xtensa", "z180", "z80" ], "type": "string", "description": "Target architecture filter. Combine with `latestPerMajor: true` for \"newest X for arch Y\" (e.g. `{language:\"c++\", instructionSet:\"amd64\", latestPerMajor:true}`)." }, "latestPerMajor": { "type": "boolean", "description": "\"Newest X\" filter. By release track (stable/nightly/prerelease/experimental): newest stable per (language, instructionSet, semver major); all nightly + prerelease; experimental skipped unless `includeExperimental: true`." }, "includeExperimental": { "type": "boolean", "description": "With `latestPerMajor: true`, also include experimental compilers (c++ proposal forks, llvm-mos platform variants). Off by default — bloats \"newest X\" answers." } } }arguments 92 lineslist_languages reads open 22h ago
List supported languages. Each entry has `defaultCompiler` and `compilerCount`.
{ "type": "object", "properties": {} }arguments 4 linesgenerate_short_url changes data unknown never probed
Create a Compiler Explorer short URL for sharing code with compiler settings
{ "type": "object", "$schema": "http://json-schema.org/draft-07/schema#", "required": [ "source", "language", "compiler" ], "properties": { "source": { "type": "string", "description": "Source code" }, "options": { "type": "string", "description": "Compiler flags (e.g. \"-O2 -std=c++20\")" }, "compiler": { "type": "string", "description": "Compiler ID from list_compilers (e.g. \"g161\", \"clang_trunk\")" }, "language": { "type": "string", "description": "Language ID (e.g. \"c++\", \"c\", \"rust\")" }, "libraries": { "type": "array", "items": { "type": "object", "required": [ "id", "version" ], "properties": { "id": { "type": "string", "description": "Library ID from list_libraries." }, "version": { "type": "string", "description": "Version id (\"188\") OR human form (\"1.88.0\")." } } }, "description": "Libraries to include." } } }arguments 48 linesget_shortlink_info reads unknown 20h ago
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.
{ "type": "object", "$schema": "http://json-schema.org/draft-07/schema#", "required": [ "id" ], "properties": { "id": { "type": "string", "description": "Short link ID or full URL (e.g. \"G38YP7eW4\" or \"https://godbolt.org/z/G38YP7eW4\")" } } }arguments 13 lineslookup_asm_instruction reads unknown 20h ago
Look up documentation for an assembly instruction
{ "type": "object", "$schema": "http://json-schema.org/draft-07/schema#", "required": [ "instruction_set", "opcode" ], "properties": { "opcode": { "type": "string", "description": "Assembly instruction mnemonic (e.g. \"MOV\", \"ADD\", \"JMP\")" }, "instruction_set": { "enum": [ "6502", "aarch64", "amd64", "amd_cdna1", "amd_cdna2", "amd_cdna3", "amd_cdna4", "amd_cdna5", "amd_rdna1", "amd_rdna2", "amd_rdna3", "amd_rdna3_5", "amd_rdna4", "arm32", "avr", "evm", "java", "llvm", "perl", "powerpc", "ptx", "python", "riscv64", "sass", "wdc65c816" ], "type": "string", "description": "Instruction set architecture (no default — must match the asm dialect being looked up)." } } }arguments 45 linescompile reads unknown 22h ago
Compile source code and return assembly output, stdout, and stderr
{ "type": "object", "$schema": "http://json-schema.org/draft-07/schema#", "required": [ "source", "language" ], "properties": { "stdin": { "type": "string", "description": "Standard input for execution (requires execute=true)" }, "source": { "type": "string", "description": "Source code to compile" }, "execute": { "type": "boolean", "description": "Run the program instead of returning assembly. `asm` becomes empty; runtime output goes to top-level `stdout`/`stderr`; compile diagnostics move to `buildResult.stdout`/`stderr`." }, "filters": { "type": "object", "properties": { "trim": { "type": "boolean", "description": "Trim whitespace (default: false)" }, "intel": { "type": "boolean", "description": "Use Intel assembly syntax (default: true)" }, "labels": { "type": "boolean", "description": "Filter unused labels (default: true)" }, "demangle": { "type": "boolean", "description": "Demangle symbol names (default: true)" }, "directives": { "type": "boolean", "description": "Filter assembler directives (default: true)" }, "commentOnly": { "type": "boolean", "description": "Filter comment-only lines (default: true)" }, "libraryCode": { "type": "boolean", "description": "Filter library code (default: false)" } }, "description": "Output filters" }, "options": { "type": "string", "description": "Compiler flags (e.g. \"-O2 -std=c++20 -Wall\")" }, "compiler": { "type": "string", "description": "Compiler ID from list_compilers (e.g. \"g161\"). If omitted, uses the language's `defaultCompiler` from list_languages." }, "language": { "type": "string", "description": "Language ID (e.g. \"c++\", \"c\", \"rust\", \"python\")" }, "libraries": { "type": "array", "items": { "type": "object", "required": [ "id", "version" ], "properties": { "id": { "type": "string", "description": "Library ID from list_libraries (e.g. \"boost\")." }, "version": { "type": "string", "description": "Version id (\"188\") OR human form (\"1.88.0\") — both accepted." } } }, "description": "Libraries to link." }, "maxAsmLines": { "type": "integer", "maximum": 9007199254740991, "description": "Cap asm output (default 500 lines).", "exclusiveMinimum": 0 }, "maxStderrLines": { "type": "integer", "maximum": 9007199254740991, "description": "Cap each stderr stream — compile and execute separately (default 100).", "exclusiveMinimum": 0 }, "maxStdoutLines": { "type": "integer", "maximum": 9007199254740991, "description": "Cap each stdout stream — compile and execute separately (default 100).", "exclusiveMinimum": 0 } } }arguments 107 lineslist_libraries reads unknown 20h ago
List available libraries for a given programming language
{ "type": "object", "$schema": "http://json-schema.org/draft-07/schema#", "required": [ "language" ], "properties": { "lean": { "type": "boolean", "description": "Force id+name only, regardless of count. Useful to browse the catalog before drilling in." }, "match": { "type": "string", "description": "Case-insensitive AND-of-tokens filter on id, name, and version strings (so \"boost 1.88\" finds Boost when one of its versions matches 1.88.x). Numeric tokens match version-prefix; alphanumeric substring." }, "language": { "type": "string", "description": "Language ID (e.g. \"c++\", \"rust\")" }, "maxResults": { "type": "integer", "maximum": 9007199254740991, "description": "Cap full-detail entries (default 25). Beyond the cap, degrades to lean (id+name only) with a refinement hint.", "exclusiveMinimum": 0 } } }arguments 27 lines
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