---
title: "Contact"
description: "How to reach the team behind ValueThen for data corrections, API questions and press."
url: "https://valuethen.com/contact/"
language: "en"
site: "ValueThen"
publisher: "Rising Throne"
updated: "2026-09-02"
license: "Data: World Bank CC BY 4.0, ECB, FRED"
---

# Contact

How to reach the team behind ValueThen for data corrections, API questions and press.
# Contact

Email is the only channel we monitor, and it reaches the people who build the site rather than a support queue. Write to [contact@therisingthrone.com](mailto:contact@therisingthrone.com?subject=valuethen.com) and put the topic in the subject line. We answer in English and Turkish, usually within two working days.

## What to include

For a data correction, send the currency, both years, the amount and the figure you expected, or simply the page address you were on. For an API question, include the exact request URL and the response you received. For press or partnership enquiries, a one-paragraph summary is enough to get a useful reply.

## API and status

The public API is documented at [the developer page](https://valuethen.com/developers/) and needs no account, so most integration questions are answered there first. If the API is returning errors, say which endpoint and when, and include any request identifier from the response headers.

## Postal address

Rising Throne, Levent, Istanbul 34330, Türkiye. Postal mail is checked infrequently; email is far faster for anything time-sensitive.

## Use this page programmatically

The same figure from the free API, no key required:

```bash
curl "https://api.valuethen.com/v1/convert?amount=100&from=USD&to=EUR&fromYear=1970&toYear=2026"
```

```json
{ "result": 777.71, "method": "cpi-then-fx", "sources": ["World Bank FP.CPI.TOTL, 2010=100"] }
```

---

Data sources: World Bank FP.CPI.TOTL, ECB HICP and reference rates, FRED CPI-U.
Free JSON API: https://api.valuethen.com/openapi.json · Agent guide: https://valuethen.com/llms.txt · MCP: https://api.valuethen.com/mcp