Struct CursorPayload 

pub struct CursorPayload {
    pub tool_id: String,
    pub caller_id: Option<String>,
    pub args_fingerprint: [u8; 32],
    pub page_index: u32,
    pub issued_at_unix: u64,
    pub server_session: [u8; 8],
    pub opaque_state: Vec<u8>,
}

Decoded cursor payload. Server-internal; clients never see the individual fields, only the base64url-encoded signed blob.

Fields

tool_id: String

Canonical tool id the cursor is bound to. Mismatching tool_id on RunToolContinue returns ERR_CURSOR_INVALID.

caller_id: Option<String>

Connection caller identity at issuance time. None for anonymous pre-Hello connections.

args_fingerprint: [u8; 32]

SHA-256 of the canonical-JSON-serialized original RunTool.args. Integrity check, not storage: tools that need to replay args put a copy inside opaque_state (within the 256-byte budget).

page_index: u32

1-based page index. Useful for audit-trail correlation and abuse detection (a client requesting page=10000 is sus).

issued_at_unix: u64

UNIX timestamp (seconds) at issuance. Server checks now - issued_at <= ttl_seconds.

server_session: [u8; 8]

Per-process random nonce from CursorIssuer::session_nonce. Server restart → new nonce → old cursors expire.

opaque_state: Vec<u8>

Tool-defined per-cursor state. Capped at MAX_OPAQUE_STATE_BYTES. Typical use: a database keyset cursor, an offset/limit pair, or an encrypted continuation token from an upstream API.

Trait Implementations

impl Clone for CursorPayload

fn clone(&self) -> CursorPayload

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for CursorPayload

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for CursorPayload

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Serialize for CursorPayload

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

where __S: Serializer,

Serialize this value into the given Serde serializer.