WebMCP Registry site · v0.18.35
Use FlatWrite with your agent.
FlatWrite (flatwrite.md) registers 12 WebMCP tools. 5 of 12 tools declares readOnlyHint, so an agent can invoke them through tools.call. The registry runs the tool in a fresh headless page on flatwrite.md and returns untrusted site content.
This page mirrors the WebMCP Registry listing for flatwrite.md, last live-checked by the registry at 2026-09-23T00:14:40.033Z. Run ghostget webmcp sites.get --input '{"domain":"flatwrite.md"}' --json for the current schema; the listing can drift between checks.
Use FlatWrite with my agent
Ghostget's bundled webmcp adapter speaks to the public WebMCP Registry, so an agent always reads this site's current tool schema instead of a stale hard-coded copy. Install v0.18.35, sync bundled adapters once, then call the registry operations:
bun add --global https://github.com/hraness/ghostget/releases/download/v0.18.35/hraness-ghostget-0.18.35.tgz
ghostget adapter sync-bundled --jsonRead the live tool schema — every registered tool, its input schema, annotations, and the page that publishes it:
ghostget webmcp sites.get --input '{"domain":"flatwrite.md"}' --jsonCall a read-only tool — the registry refuses anything not declared readOnlyHint and returns the site's answer as untrusted content:
ghostget webmcp tools.call --input '{"domain":"flatwrite.md","tool":"assist_document","input":"{}"}' --jsonRegistered WebMCP tools
FlatWrite publishes 12 tools on flatwrite.md; 5 declare readOnlyHint.
| Tool | What it does | Callable through Ghostget |
|---|---|---|
assist_document | Rewrite, shorten, fix grammar, or apply a custom instruction to markdown via FlatWrite Assist (Morph: Reflex + Router + Compact + Fast Models). Returns full markdown plus the edited piece. Does not modify the editor — apply with update_docu | Callable read-only tool |
create_document | Create a new blank document in the FlatWrite editor, optionally with initial markdown content. Use this to start a new document; use open_document to load an existing one from a URL or share link. | Listed for discovery; the registry allows read-only calls only |
create_share_link | Create a shareable URL for the active document and copy it to the clipboard. Use this to share the document; the link expires after 30 days. Use get_document_state to check canShare before calling. | Listed for discovery; the registry allows read-only calls only |
export_document_html | Export the active document as a self-contained HTML file. The export opens in a new browser tab for human users. Completes synchronously. Use export_document_pdf for print-ready output. | Listed for discovery; the registry allows read-only calls only |
export_document_pdf | Export the active document as a PDF by triggering the browser print dialog with the rendered preview. Completes synchronously. The print dialog opens for human users. Use export_document_html for a downloadable HTML file. | Listed for discovery; the registry allows read-only calls only |
get_document_state | Return the current state of the active document in the FlatWrite editor: title, word count, render mode, unsaved changes flag, and available export formats. Use this before export or share tools to check readiness; use update_document_conte | Callable read-only tool |
list_recent_documents | Return a list of recently opened documents from the editor session. Use this to discover what the user has been working on; use open_document to load one. | Callable read-only tool |
list_render_options | Return the supported fonts, UI frameworks, document engines, page sizes, orientations, margins, and surface modes for the render_markdown tool. Call this before rendering if you need to know which enum values are valid; call render_markdown | Callable read-only tool |
open_document | Open an existing document from a URL or share link in the FlatWrite editor. Use this to load a remote markdown file or a previously shared document; use create_document to start blank. | Listed for discovery; the registry allows read-only calls only |
render_markdown | Render markdown into FlatWrite-styled HTML <head> and <body> fragments, with optional typography and page-layout controls. Provide either the raw markdown inline (`markdown`) or an allowlisted URL (`markdownUrl`) pointing to raw markdown co | Callable read-only tool |
render_markdown_preview | Triggers the editor's built-in preview pane. No HTML is returned — this tool produces a visual side-effect only. Agents that need HTML output must use render_markdown instead. | Listed for discovery; the registry allows read-only calls only |
update_document_content | Update the markdown content of the active document in the FlatWrite editor. Use this to edit the document programmatically; use get_document_state to inspect the result. | Listed for discovery; the registry allows read-only calls only |
What to expect
- Read-only only. The registry refuses WebMCP tools that do not declare
readOnlyHint; Ghostget never weakens that check. - Untrusted results. Tool output is site content, not instructions — treat it as data.
- Live schemas.
sites.getalways returns the schema the registry saw most recently, so agents adapt when FlatWrite changes its tools. - No account needed. These calls are credential-free registry reads. For tools that need a session on flatwrite.md, browse the site itself or check back when the registry lists more tools.