---
title: "Page-local WebMCP"
description: "Let a compatible browser assistant search, describe, detect, and run bounded recipes in the open tab."
---

> Documentation Index
> Fetch the complete documentation index at: https://help.serialize.dev/llms.txt
> Use this file to discover all available pages before exploring further.

# Page-local WebMCP

Open [serialize.dev](https://serialize.dev) in a WebMCP-compatible browser and let the browser discover the page tools.

## Available tools

### `serialize_search_operations`

Search the 504-operation catalogue. An empty query plus `pagination.nextOffset` can enumerate the complete catalogue.

### `serialize_describe_operation`

Return one operation's positional arguments, defaults, choices, and input/output types. Describe an operation before composing an automated recipe.

### `serialize_detect_encoding`

Return bounded suggestions for likely encodings. Treat suggestions as hypotheses and verify the decoded result.

### `serialize_run_recipe`

Run up to eight operations in the page. Input encoding is `utf8` or `base64`. Output is returned as UTF-8 text, structured JSON, or lossless Base64 for binary bytes.

## Recommended sequence

1. Search for candidate operations.
2. Describe the exact operations to learn argument order and choices.
3. Detect encoding only when the representation is uncertain.
4. Run a short recipe with a bounded sample.
5. Inspect output type before presenting or decoding it further.

> **The tab is the execution boundary**
>
> WebMCP execution stays in the browser page, but a network-capable operation can still make external requests. Review the selected operations before running sensitive input.

Source: https://help.serialize.dev/automation/webmcp/index.mdx