# Use Coinranking with your agent.

[Coinranking](https://coinranking.com/) (`coinranking.com`) registers 21 WebMCP tools. 11 of 21 tools declares `readOnlyHint`, so an agent can invoke them through `tools.call`. The registry runs the tool in a fresh headless page on coinranking.com and returns untrusted site content.

This page mirrors the [WebMCP Registry](https://wmcp.ai/sites/coinranking.com) listing for `coinranking.com`, last live-checked by the registry at 2026-09-21T21:21:43.942Z. Run `ghostget webmcp sites.get --input '{"domain":"coinranking.com"}' --json` for the current schema; the listing can drift between checks.

## Use Coinranking 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 --json
```

**Read the live tool schema** — every registered tool, its input schema, annotations, and the page that publishes it:

```
ghostget webmcp sites.get --input '{"domain":"coinranking.com"}' --json
```

**Call 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":"coinranking.com","tool":"coinranking_prochart_export","input":"{}"}' --json
```

## Registered WebMCP tools

Coinranking publishes 21 tools on coinranking.com; 11 declare `readOnlyHint`.

| Tool | What it does | Callable through Ghostget |
| --- | --- | --- |
| `coinranking_prochart_compare` | Add or remove an overlay plotted alongside this chart — another coin, the global market, or a category. Takes an identifier, not a name: resolve_subject turns "Ethereum" into one. One target per call, each its own undoable step. Targets tha | Listed for discovery; the registry allows read-only calls only |
| `coinranking_prochart_configure` | Change one or more chart options — time period, interval, chart type, log scale, indicators, currency, volume, high/low markers. The whole patch applies as a single undoable step. Values that the viewer can't use are refused with a reason r | Listed for discovery; the registry allows read-only calls only |
| `coinranking_prochart_draw` | Draw a line, rectangle, circle, text label or pin on the chart, remove, duplicate or restack existing ones, or clear them all. A pin is a labelled guide line spanning the chart: `time-pin` marks a moment ("halving", "listed here"), `value-p | Listed for discovery; the registry allows read-only calls only |
| `coinranking_prochart_export` | Export the chart's data as CSV or the chart itself as a PNG image. CSV can be returned directly in the result; saving a file or copying to the clipboard asks the user first, since browsers only allow those during a user gesture. | Callable read-only tool |
| `coinranking_prochart_get_series` | The chart's plotted data points as { time, value } pairs in data space — the same coordinates drawings use. Downsampled by default to protect your context; the response says how many points exist and whether it reduced them, and always carr | Callable read-only tool |
| `coinranking_prochart_get_stats` | Summary numbers for every series on the chart — high, low, average, first and last value, with the timestamps of the high and low. Prefer this over reading the whole series for questions like "what is this asset doing", and use it to anchor | Callable read-only tool |
| `coinranking_prochart_get_view` | Read what the *active* chart is currently showing: its kind and subject, the other kinds this subject has with their labels (and the reason any of them can't be switched to), every option's current value and default, which values can be sel | Callable read-only tool |
| `coinranking_prochart_get_viewport` | Read the time window currently on screen, the full range the loaded data covers, the value-axis bounds, and whether anyone has panned or zoomed away from the natural range. Worth calling before reading or drawing: the viewer may have zoomed | Callable read-only tool |
| `coinranking_prochart_history` | Step backwards or forwards through the chart's change history, or jump straight to an entry by index. This is the same stack the undo/redo buttons drive, and it covers changes since the last navigation rather than the whole session. Call li | Listed for discovery; the registry allows read-only calls only |
| `coinranking_prochart_list_charts` | List the charts this viewer has saved, newest first, with each one's uuid, name, kind and subject. No link is returned — pass the kind and subject to navigate to open one. Use it before saving to avoid duplicating a name, or to find a chart | Callable read-only tool |
| `coinranking_prochart_list_drawings` | The shapes currently drawn on the chart, with their points in data space ({ time, value }) rather than pixels. Positions here are directly comparable with what get_series and get_stats return. Each shape also carries `onScreen`, which disti | Callable read-only tool |
| `coinranking_prochart_list_history` | The chart's undo/redo stack, newest first, with a human-readable label for each step. `past` can be undone, `future` can be redone. The stack covers changes since the last navigation, not the whole session. | Callable read-only tool |
| `coinranking_prochart_list_slots` | Read the whole page rather than one chart: how the charts are arranged, which of them is active, whether asset and time sync are on, and for each chart its number, its subject, the kind it plots and the options set on it. Every other tool a | Callable read-only tool |
| `coinranking_prochart_navigate` | Switch to a different chart kind for the current asset, or point the chart at a different asset, category or the global market. A kind switch happens immediately; a subject change returns a URL to open, because it needs a fresh page load. D | Listed for discovery; the registry allows read-only calls only |
| `coinranking_prochart_resolve_subject` | Turn a name, ticker or category into the identifier the other tools take — pass a match's `target` straight to coinranking_prochart_compare, or to coinranking_prochart_navigate's `base`. Call this first whenever the viewer names something i | Callable read-only tool |
| `coinranking_prochart_save` | Save the chart to the viewer's account, save a copy under a new name, rename it, delete it, or discard unsaved edits. Saving needs a name the first time. Deleting asks the viewer to confirm. Call get_view first if you need to know whether t | Listed for discovery; the registry allows read-only calls only |
| `coinranking_prochart_set_active_slot` | Point the interface — and every other tool here — at a different chart in the layout. Only one chart is active at a time: get_view, configure, navigate, draw, set_viewport and the rest all read and write whichever one this selects, so switc | Listed for discovery; the registry allows read-only calls only |
| `coinranking_prochart_set_layout` | Arrange the page as one chart, two side by side, two stacked, or a 2x2 grid. Growing the layout fills the new slots with copies of the active chart, so the usual next step is set_active_slot plus navigate to point each one somewhere else; s | Listed for discovery; the registry allows read-only calls only |
| `coinranking_prochart_set_sync` | Turn the layout's two sync toggles on or off. With asset sync on, every chart follows the active chart's asset while keeping its own kind — BTC price next to BTC market cap. With time sync on, they share the time period, interval and timezo | Listed for discovery; the registry allows read-only calls only |
| `coinranking_prochart_set_viewport` | Zoom or pan the chart to a time window, or reset it to fit all the loaded data. This moves the view only: it is not stored in the URL, so it can't be shared or bookmarked, it does not create an undo step, and the next configure or navigate | Listed for discovery; the registry allows read-only calls only |
| `coinranking_prochart_share_link` | Get a link that reproduces the chart exactly as it looks now — kind, asset, time range, styling and drawings all travel in the URL. Returns the link by default; set `share` to open the device's share sheet instead, which asks the user first | Callable read-only tool |

## 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.get` always returns the schema the registry saw most recently, so agents adapt when Coinranking changes its tools.
- **No account needed.** These calls are credential-free registry reads. For tools that need a session on coinranking.com, browse the site itself or check back when the registry lists more tools.