Package dev.tachyonmcp.api.server.domain

Interface ProgressToken

All Known Implementing Classes:

ProgressToken.NumericValue, ProgressToken.StringValue

public sealed interface ProgressToken
permits ProgressToken.StringValue, ProgressToken.NumericValue

An MCP progress token: an opaque value the client attaches to a request via _meta.progressToken and the server echoes back on notifications/progress. Per the MCP spec, a progress token is a bare JSON string or number — never an object or array.

Nested Class Summary

Nested Classes

Modifier and Type	Interface	Description
static final record	ProgressToken.NumericValue	A progress token carrying a numeric value.
static final record	ProgressToken.StringValue	A progress token carrying a string value.

Method Summary

Static Methods

Modifier and Type	Method	Description
static ProgressToken	of(Object value)	Wraps a raw value as a ProgressToken.

Method Details

of

static ProgressToken of(Object value)

Wraps a raw value as a ProgressToken.

Parameters:

value - a CharSequence or Number

Returns:

the wrapped token

Throws:

IllegalArgumentException - if value is neither a CharSequence nor a Number