token:approve

Approve a spender for an ERC20 token allowance.

Supports runtime fields inside smart blocks. Use explicit @helper! expressions or captured outputs; other fields are evaluated at build time.

Syntax

token:approve <amount> <token> <for> <spender>

Arguments

Name	Type	Evaluation	Description
amount	number	Runtime in smart blocks	Allowance in token units (wei)
token	address	Runtime in smart blocks	Token address
for	command	Build time	Keyword for
spender	address	Runtime in smart blocks	Spender address

Examples

load token

set $token 0x9C58BAcC331c9aa871AFD802DB6379a98e80CEdb
set $spender 0x4F2083f5fBede34C2714aFfb3105539775f7FE64

token:approve 100e18 $token for $spender

# Revoke an allowance
token:approve 0 $token for $spender

See Also

• token:burn-from / token:set-approval-for-all