FAQ

Authentication

How do I obtain an API key?

Create an application in the Console and obtain your API key.

Getting a 401 error?

Check:

• Whether X-API-KEY is correct
• Whether X-TIMESTAMP is a millisecond timestamp
• Whether X-SIGN is generated correctly

Data

How do I get a token's vsTokenId?

Call the Token list endpoint and search by token name or symbol. Cache frequently used vsTokenId values to avoid repeated queries.

Why are some fields empty?

Possible reasons:

• No data available for that token
• No data in the queried time range
• That token does not support this data type

What unit are timestamps in?

All timestamp fields use millisecond timestamps (13 digits).

API calls

How are credits calculated?

Each endpoint has a corresponding credit cost. See the Credits section in each endpoint doc for the exact value.

Is there a limit on response size?

Some endpoints support a size parameter to control the amount of data returned. See each endpoint doc for specific limits.

Technical support

If the above does not resolve your issue, email support@valuescan.io.