# webmcp-polyfill

> Use this tool when you need to enable browser-based communication with AI agents, solving compatibility issues between web applications and MCP servers. It relays tools, resources, and prompts via a WebSocket-to-stdio bridge, providing a seamless interface for AI agents to receive inputs and send outputs. Ideal for use cases requiring real-time communication between browsers and AI agents, such as interactive web applications and AI-powered tools.

Canonical page: https://skillsregistry.net/skills/eggyshrimp-webmcp-polyfill  
JSON: https://api.skillsregistry.net/v1/skills/eggyshrimp-webmcp-polyfill

## Description

Enables browsers to act as MCP servers by relaying tools, resources, and prompts to AI agents via a WebSocket-to-stdio bridge.

## Trust

- **Trust score (0–1):** 0.69
- **Verification tier:** scanned
- **Last scanned:** 2026-08-30

## Facts

- **Version:** 1.0.0
- **Skill type:** atomic
- **Execution layer:** mcp-remote
- **Runtime environment:** api
- **Category:** browser-automation
- **Updated:** 2026-08-30

## Source

- **Source listing:** [Glama](https://glama.ai/mcp/servers/u8m4ho2rm8)
- **Repository:** <https://github.com/eggyShrimp/webmcp-polyfill>

## Use it

Resolve this record through the SkillsRegistry MCP server (no auth, read-only):

```
claude mcp add --transport http --scope user skillsregistry https://api.skillsregistry.net/mcp
```

```json
{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/call",
  "params": {
    "name": "get_skill",
    "arguments": {
      "slug": "eggyshrimp-webmcp-polyfill"
    }
  }
}
```

REST: `GET https://api.skillsregistry.net/v1/skills/eggyshrimp-webmcp-polyfill` · pull for local use: `GET https://api.skillsregistry.net/v1/skills/eggyshrimp-webmcp-polyfill/pull`

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SkillsRegistry indexes agent skills from public registries and GitHub. Skills we have analysed are scanned with Circle-IR and scored on six dimensions; each listing states its scan coverage. More: https://skillsregistry.net/llms.txt