> ## Documentation Index
> Fetch the complete documentation index at: https://toolathlon.xyz/llms.txt
> Use this file to discover all available pages before exploring further.

# Travel Exchange

> Aggregate personal expense files for seven travelers, convert all costs to CNY using actual June 5, 2025 exchange rates.

> **Toolathlon-Verified** · Website task ID `313` · Canonical task `travel-exchange`
>
> [View the task source at `d57361c0`](https://github.com/hkust-nlp/Toolathlon/tree/d57361c0f1582cf9a0675c0753315bb6b004bd0e/tasks/finalpool/travel-exchange)

## Required Tools

<Card>
  <div className="tools-container">
    <div className="mcp-servers-container">
      <div className="mcp-servers-title">
        MCP Servers
      </div>

      <div className="mcp-servers-grid">
        <div className="mcp-server-item">
          <img alt="" aria-hidden="true" src="https://mintcdn.com/hkust/v2Ad3GlVGK-9gZ_R/icons/terminal.png?fit=max&auto=format&n=v2Ad3GlVGK-9gZ_R&q=85&s=649c9eaee40fc4b5379e1faa127c84b7" style={{height: "20px", width: "20px", margin: 0, padding: 0, display: 'inline-block'}} width="64" height="64" data-path="icons/terminal.png" />

          <span className="mcp-server-name">terminal</span>
        </div>

        <div className="mcp-server-item">
          <img alt="" aria-hidden="true" src="https://mintcdn.com/hkust/QdN2Y6f6c_GBV7Vj/icons/filesystem.png?fit=max&auto=format&n=QdN2Y6f6c_GBV7Vj&q=85&s=b4163322f58a72b712c697bdbeac85b9" style={{height: "20px", width: "20px", margin: 0, padding: 0, display: 'inline-block'}} width="64" height="64" data-path="icons/filesystem.png" />

          <span className="mcp-server-name">filesystem</span>
        </div>

        <div className="mcp-server-item">
          <img alt="" aria-hidden="true" src="https://mintcdn.com/hkust/v2Ad3GlVGK-9gZ_R/icons/yahoo.png?fit=max&auto=format&n=v2Ad3GlVGK-9gZ_R&q=85&s=2ea18c5900a96dfb668a2225a5dc14c0" style={{height: "20px", width: "20px", margin: 0, padding: 0, display: 'inline-block'}} width="64" height="64" data-path="icons/yahoo.png" />

          <span className="mcp-server-name">yahoo-finance</span>
        </div>
      </div>
    </div>

    <div className="local-tools-container">
      <div className="mcp-servers-title">
        Local Tools
      </div>

      <div className="local-tools-grid">
        <div className="local-tool-item">
          <img alt="" aria-hidden="true" src="https://mintcdn.com/hkust/ucpMq24upueB4g4R/icons/claim_done.png?fit=max&auto=format&n=ucpMq24upueB4g4R&q=85&s=94ee5a6cf860bae09936a702c6c6c648" style={{height: "20px", width: "20px", margin: 0, padding: 0, display: 'inline-block'}} width="14" height="14" data-path="icons/claim_done.png" />

          <span className="local-tool-name">claim\_done</span>
        </div>

        <div className="local-tool-item">
          <Icon icon="filter-list" size={20} color="#4286f6" />

          <span className="local-tool-name">handle\_overlong\_tool\_outputs</span>
        </div>

        <div className="local-tool-item">
          <Icon icon="bars-progress" size={20} color="#4286f6" />

          <span className="local-tool-name">manage\_context</span>
        </div>

        <div className="local-tool-item">
          <img alt="" aria-hidden="true" src="https://mintcdn.com/hkust/ucpMq24upueB4g4R/icons/history.png?fit=max&auto=format&n=ucpMq24upueB4g4R&q=85&s=25d885756cf14ced8475bd94adfdecb7" style={{height: "20px", width: "20px", margin: 0, padding: 0, display: 'inline-block'}} width="14" height="14" data-path="icons/history.png" />

          <span className="local-tool-name">history</span>
        </div>
      </div>
    </div>
  </div>
</Card>

## Instruction

I (Andrew) and six friends (Lau, Chen, Diana, Elena, Frank, and Grace) traveled to Turkey during 2025. We all exchanged currencies on June 5th before the trip. Please help me read all the files in the personal workspace, and calculate the total trip cost for all seven of us in CNY (please calculate with the exchange rate we actually used, you can find exchange rates on yahoo).

Fill the specified file `calculation.json` in the workspace.

## Initial State

### Local Workspace

<div className="file-tree">
  <a href="https://github.com/hkust-nlp/Toolathlon/tree/d57361c0f1582cf9a0675c0753315bb6b004bd0e/tasks/finalpool/travel-exchange/initial_workspace">workspace</a>/
  ├── Andrew's Istanbul expenses.csv
  ├── calculation.json
  ├── Chen's expenses.csv
  ├── Diana's travel log.csv
  ├── Elena's trip expenses.csv
  ├── Frank's vacation costs.csv
  ├── Grace's budget tracker.csv
  ├── Lau's expensive.csv
  ├── memory\_Andrew\.md
  ├── memory\_Chen.md
  ├── memory\_Diana.md
  ├── memory\_Elena.md
  ├── memory\_Frank.md
  ├── memory\_Grace.md
  └── memory\_Lau.md
</div>

## Legacy Trajectories

<Warning>
  These replays were produced on the original Toolathlon release. They are retained for historical inspection and are not Toolathlon-Verified results.
</Warning>

* ❌ [Claude-4.5-Sonnet](https://toolathlon-traj.xyz/claude-4.5-sonnet_travel-exchange)
* ❌ [Deepseek-v3.2-Exp](https://toolathlon-traj.xyz/deepseek-v3.2-exp_travel-exchange)