Struct ApprovalStatement 

pub struct ApprovalStatement {

    pub type_: String,
    pub timestamp: String,
    pub approver: String,
    pub subject: SubjectRef,
    pub description: Option<String>,
    pub expires_at: Option<String>,
    pub delegatable: bool,
    pub nonce: String,
    pub scope: Option<ApprovalScope>,
    pub policy_ref: Option<String>,
    pub irreversibility: Option<String>,
    pub quarantine_receipt: Option<String>,
    pub meta: Option<Value>,
}

Records that an approver authorised an intent or action.

The nonce field is the cornerstone of approval security: the consuming ActionStatement must echo the same nonce in its approval_nonce field. This cryptographically binds each approval to exactly one action (or max_actions actions when set), preventing approval reuse.

Fields

type_: String

timestamp: String

approver: String

DID-style approver URI. e.g. “human://alice”

subject: SubjectRef

description: Option<String>

expires_at: Option<String>

ISO 8601 expiry timestamp. None means no expiry.

delegatable: bool

Whether the receiving actor may re-delegate this approval.

nonce: String

Random token. The consuming ActionStatement must set its approval_nonce field to this value. Generated by the SDK if not provided by the caller.

scope: Option<ApprovalScope>

policy_ref: Option<String>

irreversibility: Option<String>

Irreversibility class of the actions this approval authorizes. One of IRREVERSIBILITY_CLASSES (fail-closed: producers must reject any other value; absent means undeclared, the pre-existing behavior). Consequential-or-worse classes gate on memory quarantine evidence at minting; see docs/specs/memory-provenance-binding.md §2.4-2.5.

quarantine_receipt: Option<String>

Artifact id of the memory.quarantine-check.v1 receipt that gated this grant. Signed into the approval so the evidence link is tamper-evident: a verifier can walk grant -> check receipt -> provider key -> chain root.

meta: Option<Value>

Implementations

impl ApprovalStatement

pub fn new(approver: impl Into<String>, nonce: impl Into<String>) -> Self

Trait Implementations

impl Clone for ApprovalStatement

fn clone(&self) -> ApprovalStatement

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for ApprovalStatement

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for ApprovalStatement

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Serialize for ApprovalStatement

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.