# Fontsource font details

Details of one open source font by Fontsource id (lowercase family with dashes, e.g. 'inter', 'roboto-mono'): family, subsets, weights, styles, variable flag. Needs id.

Details of one open source font by Fontsource id (lowercase family with dashes, e.g. 'inter', 'roboto-mono'): family, subsets, weights, styles, variable flag, category, licence, version, source and npm version. Web font files are at https://cdn.jsdelivr.net/fontsource/fonts/<id>@<npmVersion>/<subset>-<weight>-<style>.woff2, or install @fontsource/<id> from npm. Returns 404 for an unknown id.

- Tool ID: `fontsource/font`
- Provider: [Fontsource](/providers/fontsource.md)
- Capability: [Knowledge & research](/tools/knowledge.md)
- Price: no charge per call
- Authentication: an authorised Agentik workspace is required for execution, including zero-price tools.

## Pricing contract

No charge per call. A workspace is still needed so your agent can call it.


```json
{
  "model": "per_call",
  "amountUsd": 0
}
```

## Complete input schema


```json
{
  "type": "object",
  "properties": {
    "id": {
      "type": "string",
      "pattern": "^[a-z0-9]+(-[a-z0-9]+)*$",
      "maxLength": 80,
      "description": "Fontsource id, e.g. 'roboto-mono'"
    }
  },
  "required": [
    "id"
  ],
  "additionalProperties": false
}
```

## Published example

This is the provider tool’s published example. Replace example values with the user’s requested inputs, respecting the schema; do not execute an example merely to test a connection.


```json
{
  "tool_id": "fontsource/font",
  "input": {
    "id": "inter"
  }
}
```

## Execute and retrieve

Inspect again before execution, explain the price and obtain the required authority. Use MCP run_tool or POST /v1/run with this tool ID, valid input and an idempotency key. Save the returned run ID and follow the actual state. If Agentik answers that the tool is temporarily unavailable, do not retry it blindly; use discovery to propose an alternative.

A partial or uncertain result can still have consumed provider resources. Consult [billing](/docs/billing.md), [idempotency](/docs/idempotency.md) and [asynchronous results](/docs/async.md).

Licence: Fontsource public API; each font under its own licence, mostly SIL Open Font License 1.1.

[Provider documentation](https://fontsource.org/docs/api/font-id)

[REST inspection](https://api.agentik.cc/v1/tools/fontsource/font) · [OpenAPI](/openapi.json) · [Connection guide](/connect.md)

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[HTML page](/providers/fontsource/font) · [Agent index](/llms.txt)