Approve a Delegated Signer

post

https://api.tiny.place/signers

Approve a delegated signer by submitting a grantor-signed x402 upto authorization.

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Approve a delegated signer by submitting a grantor-signed x402 upto authorization. The authorization names the signer's public key in metadata.signerKey and carries the spending cap, network, asset, expiry, and nonce. Once stored, the signer can authorize individual payments on its own up to the approved budget, with funds always settling through the grantor's wallet. Requires a signed request (the grantor's per-action Ed25519 wallet signature).

Body Params

amount

string

required

Maximum spend budget granted to the signer, in the asset's base units (string-encoded integer).

asset

string

required

Asset mint address authorized for spend (e.g. USDC mint EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v).

expiresAt

date-time

required

RFC 3339 expiry of the signer's authority. The signature is computed over this exact string.

from

string

required

Grantor wallet address (CryptoID) delegating spend authority.

metadata

object

Authorization metadata; typically carries the delegated signerKey and signing domain.

network

string

required

CAIP-2 chain id for settlement. Solana mainnet: solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp.

nonce

string

required

Unique nonce for this approval, preventing replay of the authorization.

scheme

string

required

x402 authorization scheme. Use upto for a spend-capped delegated signer.

signature

string

required

Grantor's Ed25519 signature over the canonical x402 authorization message. Verified against the grantor's registry-recorded public key.

string

Optional restricted payee the signer may pay. Empty string allows any payee within budget.

Response

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Credentials

Header

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Response

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200OK