W3C

WebAssembly

WebAssembly (Wasm) is a W3C Recommendation defining a portable binary instruction format for a stack-based virtual machine. It enables near-native performance in web browsers for code compiled from languages like C, C++, and Rust, and is a core web platform technology.

GitHub

Other Resources

🔗
Specification
https://www.w3.org/TR/wasm-core-2/
🔗
Website
https://webassembly.org/
🔗
GitHub
https://github.com/WebAssembly/spec

Work with this as data

Every API here is available over the APIs.io API and to AI agents over MCP.

MCP server

One button, every client — Claude, Cursor, VS Code and the rest.

https://apis.io/mcp

Tools for apis

7 MCP tools reach this
  • find_apisBrowse and filter every API in the catalog.
  • get_api_artifactsOne API's artifacts, grouped by type.
  • get_openapiThe primary OpenAPI for this API.
  • find_similar_apisAPIs that look like this one.
  • apis_io_searchSTART HERE — APIs, providers and tags for one query, each with its total.
  • resolveTurn a domain, URL or GitHub org into the provider it belongs to.
  • find_cohortsEvery scored population of providers in the catalog.
All 92 tools

Call it yourself

curl for this page
This API 
curl "https://apis.io/api/v1/apis/wasm"
All apis 
curl "https://apis.io/api/v1/apis?limit=25"

Discovery needs no key. Ratings and market analysis are Pro.

Get an API key

Free tier, no email required.

GitHub Google LinkedIn

A second provider on the same verified email joins the account you already have.

API entry from apis.yml

apis.yml Raw ↑ 
aid: w3c:wasm
name: WebAssembly
description: WebAssembly (Wasm) is a W3C Recommendation defining a portable binary instruction format
  for a stack-based virtual machine. It enables near-native performance in web browsers for code compiled
  from languages like C, C++, and Rust, and is a core web platform technology.
humanURL: https://www.w3.org/TR/wasm-core-2/
tags:
- Performance
- Standards
- WebAssembly
- Web Platform
properties:
- url: https://www.w3.org/TR/wasm-core-2/
  type: Specification
- url: https://webassembly.org/
  type: Website
- url: https://github.com/WebAssembly/spec
  type: GitHub