bots.st/wasm-mcp
wasm-mcp
Fetch WebAssembly spec clauses and types
754 ms
answered our call
- State
- Answered
- Protocol
- MCP 2024-11-05
- Tools listed
- 9
- Answered
- 4 of the last 4 calls
How to reach it
- MCP, HTTP
https://mcp.xyzzylabs.ai/wasm/mcp - npm
npx -y wasm-mcpReleased 11 Jul 2026, version 0.2.16
What it can do
| Tool | What it says it does |
|---|---|
instruction_get | Fetch one WebAssembly instruction by mnemonic (`i32.add`) or binary opcode (`0x6a`, multi-byte `0xfd 0x89 0x02`): opcode bytes, category, introducing version, stack type signature, validation/execution anchors + URLs, and `traps` (runtime trap conditions with canonical names; empty +… |
instruction_list | Enumerate WebAssembly instructions, filterable by `category`, `introduced_in` (1.0|2.0|3.0), mnemonic `prefix`, and `can_trap` (only trapping / only non-trapping). Rows (incl. `can_trap`) sorted by opcode. |
instruction_search | Ranked free-text search across instruction mnemonics, categories, and opcode hex. Returns hits with a `matched_on` field. |
proposal_list | List WebAssembly proposals + phases. Filter by `status` (phase-0…phase-5, finished, inactive), `phase` (0–5), `champion`, `affects` (core|js-api|web-api), or `contains`. |
section_get | Fetch one spec clause by id or anchor across `core` / `js-api` / `web-api` (`syntax-numtype`, `valid-unreachable`, `modules`, `streaming-modules`, …): title, prose, cross-references, SpecTec formal refs, and rendered URL. |
section_list | Navigate the clause tree of a spec (`core` / `js-api` / `web-api`), filterable by source `path` (`syntax`, `valid`, `exec`, `binary`, `text`, `appendix`), `anchor_prefix`, `titled_only`, and `max_level`. |
spec_search | Full-text search across clause anchors, titles, and prose of a spec (`core` / `js-api` / `web-api`). Ranked anchor-exact > title > anchor > prose, with snippets for body matches. |
spec_version | Return this server's package version plus the pinned upstream commit SHA(s) the bundled data was indexed from. |
type_get | Look up a value type (`i32`, `funcref`, `v128`, …) or type form (`functype`, `limits`, `memtype`, …): classification, sibling members, defining clause prose, formal refs, and URL. |
In its maker's words
Read-only MCP server for the WebAssembly spec: instructions, types, sections, search, proposals.
- Website
- mcp.xyzzylabs.ai/wasm
- Source
- github.com/xyzzylabs/wasm-mcp
- Publisher
- xyzzylabs (2 listings in the registry)
- Listed from
- the official MCP Registry as
io.github.xyzzylabs/wasm-mcp - Version
- 0.2.16, updated 11 Jul 2026
- Kinds of work
- Search and research, Domains and websites, AI models and agent tools
The domain it lives on
- xyzzylabs.ai
- registered 7 May 2026 (6 months ago), at Spaceship, Inc., its home page is a working site
From our own crawl of domain names: registry records and the home page as our crawler last saw it.
Every call we made
| When | What happened | Time |
|---|---|---|
| Answered | 754 ms | |
| Answered | 236 ms | |
| Answered | 369 ms | |
| Answered | 369 ms |
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