WebMCP Registry site · v0.18.35
Use The One Thing with your agent.
The One Thing (theonethingapp.com) registers 7 WebMCP tools. 5 of 7 tools declares readOnlyHint, so an agent can invoke them through tools.call. The registry runs the tool in a fresh headless page on theonethingapp.com and returns untrusted site content.
This page mirrors the WebMCP Registry listing for theonethingapp.com, last live-checked by the registry at 2026-09-21T21:09:25.678Z. Run ghostget webmcp sites.get --input '{"domain":"theonethingapp.com"}' --json for the current schema; the listing can drift between checks.
Use The One Thing 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":"theonethingapp.com"}' --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":"theonethingapp.com","tool":"get_download_links","input":"{}"}' --jsonRegistered WebMCP tools
The One Thing publishes 7 tools on theonethingapp.com; 5 declare readOnlyHint.
| Tool | What it does | Callable through Ghostget |
|---|---|---|
get_download_links | Returns a stable list of official app links. Pass all for iOS, Android and web, or select one platform. | Callable read-only tool |
get_journal_article | Returns the title, summary, publication date, keywords and canonical URL for one published Journal article selected by its exact slug. | Callable read-only tool |
get_mcp_connection_details | Returns the official remote OAuth MCP endpoint, documentation URL, authentication model, scopes and authenticated task-tool names. The task tools are not public marketing-site WebMCP tools. | Callable read-only tool |
get_product_overview | Returns The One Thing product name, purpose, proposition, accessibility features, supported platforms, plan summaries and canonical homepage URL. | Callable read-only tool |
list_journal_articles | Returns published Journal articles newest first. An optional topic performs a case-insensitive substring match across each title, description and keyword. | Callable read-only tool |
open_journal_article | Navigates this browser tab to one published The One Thing Journal article selected by its exact slug. It does not change user data. | Listed for discovery; the registry allows read-only calls only |
open_task_app | Navigates this browser tab to The One Thing web app sign-in or sign-up page. It does not sign in, read tasks or change task data. | 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 The One Thing changes its tools. - No account needed. These calls are credential-free registry reads. For tools that need a session on theonethingapp.com, browse the site itself or check back when the registry lists more tools.