wasm-mcp
What this MCP does
Provides searchable, structured reference data for the WebAssembly specification, including instructions, types, clauses, proposals, and formal references.
Tools
Input schema
{'type': 'object', 'properties': {'opcode': {'type': 'string', 'description': 'Binary opcode hex, e.g. `0x6a` or `0xfd 0x89 0x02`. Exact.'}, 'mnemonic': {'type': 'string', 'description': 'Instruction mnemonic, e.g. `i32.add`. Case-insensitive, exact.'}}, 'additionalProperties': False}
Input schema
{'type': 'object', 'properties': {'prefix': {'type': 'string', 'description': 'Mnemonic prefix, e.g. `i32.`. Case-insensitive.'}, 'can_trap': {'type': 'boolean', 'description': 'Keep only instructions that can (true) / cannot (false) trap.'}, 'category': {'enum': ['control', 'numeric', 'parametric', 'variable', 'table', 'memory', 'ref', 'i31', 'struct', 'array', 'extern', 'vec'], 'type': 'string', 'description': 'Instruction category.'}, 'introduced_in': {'enum': ['1.0', '2.0', '3.0'], 'type': 'string', 'description': 'Introducing version.'}}, 'additionalProperties': False}
Input schema
{'type': 'object', 'required': ['query'], 'properties': {'limit': {'type': 'integer', 'maximum': 100, 'minimum': 1, 'description': 'Max hits.'}, 'query': {'type': 'string', 'description': 'Search text.'}}, 'additionalProperties': False}
Input schema
{'type': 'object', 'properties': {'phase': {'type': 'integer', 'maximum': 5, 'minimum': 0, 'description': 'Numeric phase 0–5.'}, 'status': {'enum': ['phase-0', 'phase-1', 'phase-2', 'phase-3', 'phase-4', 'phase-5', 'finished', 'inactive'], 'type': 'string', 'description': 'Lifecycle status.'}, 'affects': {'type': 'string', 'description': 'Affected spec (finished only).'}, 'champion': {'type': 'string', 'description': 'Champion substring.'}, 'contains': {'type': 'string', 'description': 'Name/champion substring.'}}, 'additionalProperties': False}
Input schema
{'type': 'object', 'required': ['id'], 'properties': {'id': {'type': 'string', 'description': 'Clause id or anchor.'}, 'spec': {'enum': ['core', 'js-api', 'web-api'], 'type': 'string', 'description': 'Which spec (default core).'}}, 'additionalProperties': False}
Input schema
{'type': 'object', 'properties': {'path': {'type': 'string', 'description': 'Source path / prefix.'}, 'spec': {'enum': ['core', 'js-api', 'web-api'], 'type': 'string', 'description': 'Which spec (default core).'}, 'max_level': {'type': 'integer', 'maximum': 6, 'minimum': 1, 'description': 'Cap heading depth.'}, 'titled_only': {'type': 'boolean', 'description': 'Drop anchor-only blocks.'}, 'anchor_prefix': {'type': 'string', 'description': 'Id/anchor prefix.'}}, 'additionalProperties': False}
Input schema
{'type': 'object', 'required': ['query'], 'properties': {'spec': {'enum': ['core', 'js-api', 'web-api'], 'type': 'string', 'description': 'Which spec (default core).'}, 'limit': {'type': 'integer', 'maximum': 100, 'minimum': 1, 'description': 'Max hits.'}, 'query': {'type': 'string', 'description': 'Search text.'}}, 'additionalProperties': False}
Input schema
{'type': 'object', 'properties': {}, 'additionalProperties': False}
Input schema
{'type': 'object', 'required': ['name'], 'properties': {'name': {'type': 'string', 'description': 'Type or type-form name. Case-insensitive, exact.'}}, 'additionalProperties': False}
Recent tool changes
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