---
title: "Cost estimate calculator"
method: GET
path: "/api/v1/toll/estimate"
tags: ["Agent Economy"]
---

# Cost estimate calculator

`GET /api/v1/toll/estimate`

## Request

- Base URL: `https://arc-relay.com`
- URL: `https://arc-relay.com/api/v1/toll/estimate`
- Auth: HTTP bearer

## Query parameters

- `mcp_calls` integer
- `forwards` integer
- `api_calls` integer
- `invocations` integer

## Response `200`

Cost breakdown (currently 0 — no per-call charge)

---

[API](https://skmtc.dev/arc-relay/apis/arc-relay-api.md) · [All operations](https://skmtc.dev/arc-relay/apis/arc-relay-api/llms.txt) · [OpenAPI document](https://skmtc.dev/arc-relay/apis/arc-relay-api/revisions/1743ed2c49bc?raw)