Events Reference - x0 Protocol

All x0 programs emit Anchor events for off-chain indexing, analytics, and real-time monitoring. Events are logged via emit!() and can be consumed using any Solana event subscription mechanism.

Guard Events

PolicyCreated

Emitted when a new agent policy is initialized.

Field	Type	Description
`policy`	`Pubkey`	Policy PDA address
`owner`	`Pubkey`	Owner’s wallet address
`agent_signer`	`Pubkey`	Agent’s signing key
`daily_limit`	`u64`	Initial daily spending limit
`timestamp`	`i64`	Unix timestamp

PolicyUpdated

Emitted when an agent policy is modified.

Field	Type	Description
`policy`	`Pubkey`	Policy PDA address
`daily_limit`	`Option<u64>`	New daily limit (if changed)
`agent_signer`	`Option<Pubkey>`	New agent signer (if rotated)
`timestamp`	`i64`	Unix timestamp

AgentRevoked

Emitted when an agent’s authority is revoked.

Field	Type	Description
`policy`	`Pubkey`	Policy PDA address
`revoked_signer`	`Pubkey`	The revoked agent signer
`timestamp`	`i64`	Unix timestamp

TransferValidated

Emitted when a transfer passes guard validation.

Field	Type	Description
`policy`	`Pubkey`	Policy PDA address
`amount`	`u64`	Transfer amount
`recipient`	`Pubkey`	Recipient address
`current_spend_24h`	`u64`	Running 24h spend after this transfer
`remaining_allowance`	`u64`	Remaining daily allowance
`is_confidential`	`bool`	Whether this was a confidential transfer
`timestamp`	`i64`	Unix timestamp

TransferRejected

Emitted when a transfer is rejected by the guard.

Field	Type	Description
`policy`	`Pubkey`	Policy PDA address
`amount`	`u64`	Attempted transfer amount
`recipient`	`Pubkey`	Attempted recipient
`reason_code`	`u16`	Error code (see Errors reference)
`timestamp`	`i64`	Unix timestamp

BlinkGenerated

Emitted when a Blink is generated for human-in-the-loop approval.

Field	Type	Description
`policy`	`Pubkey`	Policy PDA address
`agent`	`Pubkey`	Agent that triggered the Blink
`amount`	`u64`	Requested amount
`recipient`	`Pubkey`	Requested recipient
`expires_at`	`i64`	Blink expiration timestamp
`timestamp`	`i64`	Unix timestamp

WhitelistUpdated

Emitted when the whitelist configuration is changed.

Field	Type	Description
`policy`	`Pubkey`	Policy PDA address
`mode`	`String`	New mode: `"none"`, `"merkle"`, `"bloom"`, `"explicit"` (max 32 chars)
`timestamp`	`i64`	Unix timestamp

Escrow Events

EscrowCreated

Field	Type	Description
`escrow`	`Pubkey`	Escrow PDA address
`buyer`	`Pubkey`	Buyer address
`seller`	`Pubkey`	Seller address
`arbiter`	`Option<Pubkey>`	Optional arbiter
`amount`	`u64`	Escrow amount
`memo_hash`	`[u8; 32]`	SHA-256 of service description
`timeout`	`i64`	Escrow timeout timestamp
`timestamp`	`i64`	Unix timestamp

EscrowFunded

Field	Type	Description
`escrow`	`Pubkey`	Escrow PDA address
`amount`	`u64`	Amount funded
`timestamp`	`i64`	Unix timestamp

DeliveryMarked

Field	Type	Description
`escrow`	`Pubkey`	Escrow PDA address
`proof_hash`	`Option<[u8; 32]>`	Optional delivery proof hash
`timestamp`	`i64`	Unix timestamp

DisputeInitiated

Field	Type	Description
`escrow`	`Pubkey`	Escrow PDA address
`initiator`	`Pubkey`	Party that initiated the dispute
`evidence_hash`	`[u8; 32]`	SHA-256 of dispute evidence
`timestamp`	`i64`	Unix timestamp

FundsReleased

Field	Type	Description
`escrow`	`Pubkey`	Escrow PDA address
`amount`	`u64`	Amount released
`recipient`	`Pubkey`	Recipient (seller)
`is_auto_release`	`bool`	Whether this was auto-release on timeout
`timestamp`	`i64`	Unix timestamp

FundsRefunded

Field	Type	Description
`escrow`	`Pubkey`	Escrow PDA address
`amount`	`u64`	Amount refunded
`recipient`	`Pubkey`	Recipient (buyer)
`reason`	`String`	Reason for refund (max 128 chars)
`timestamp`	`i64`	Unix timestamp

DisputeResolved

Field	Type	Description
`escrow`	`Pubkey`	Escrow PDA address
`resolver`	`Pubkey`	Arbiter or auto-resolver
`winner`	`Pubkey`	Winner of the dispute
`amount`	`u64`	Amount awarded
`timestamp`	`i64`	Unix timestamp

Registry Events

AgentRegistered

Field	Type	Description
`registry_entry`	`Pubkey`	Registry entry PDA
`agent_id`	`Pubkey`	Agent’s policy PDA
`endpoint`	`String`	Service endpoint URL (max 200 chars)
`capability_count`	`u8`	Number of capabilities registered
`timestamp`	`i64`	Unix timestamp

RegistryUpdated

Field	Type	Description
`registry_entry`	`Pubkey`	Registry entry PDA
`updated_fields`	`Vec<String>`	Fields that changed (max 10, each max 32 chars)
`timestamp`	`i64`	Unix timestamp

AgentDeregistered

Field	Type	Description
`registry_entry`	`Pubkey`	Registry entry PDA
`agent_id`	`Pubkey`	Agent’s policy PDA
`timestamp`	`i64`	Unix timestamp

Reputation Events

ReputationInitialized

Field	Type	Description
`reputation`	`Pubkey`	Reputation PDA
`agent_id`	`Pubkey`	Agent’s policy PDA
`timestamp`	`i64`	Unix timestamp

ReputationUpdated

Field	Type	Description
`reputation`	`Pubkey`	Reputation PDA
`update_type`	`String`	One of: `"success"`, `"dispute"`, `"resolution"`, `"decay"` (max 32 chars)
`total_transactions`	`u64`	New total transaction count
`score_scaled`	`u32`	New reputation score (scaled by 1000)
`timestamp`	`i64`	Unix timestamp

Token Events

ConfidentialTransferExecuted

Field	Type	Description
`source`	`Pubkey`	Source account (agent)
`destination`	`Pubkey`	Destination account
`encrypted_amount`	`Option<[u8; 64]>`	Encrypted amount (for auditor)
`timestamp`	`i64`	Unix timestamp

AuditLog

Field	Type	Description
`agent`	`Pubkey`	Agent’s policy PDA
`ciphertext`	`[u8; 64]`	Encrypted amount (decryptable by auditor)
`timestamp`	`i64`	Unix timestamp

Protocol Events

ProtocolConfigUpdated

Field	Type	Description
`config`	`Pubkey`	Protocol config PDA
`admin`	`Pubkey`	Admin who made the update
`update_description`	`String`	Description of change (max 256 chars)
`timestamp`	`i64`	Unix timestamp

ProtocolPaused

Field	Type	Description
`config`	`Pubkey`	Protocol config PDA
`is_paused`	`bool`	Whether protocol is now paused
`reason`	`String`	Reason for pause (max 128 chars)
`timestamp`	`i64`	Unix timestamp

Wrapper Events

WrapperInitialized

Field	Type	Description
`config`	`Pubkey`	Wrapper config PDA
`usdc_mint`	`Pubkey`	USDC mint address
`wrapper_mint`	`Pubkey`	x0-USD mint address
`reserve_account`	`Pubkey`	Reserve account address
`admin`	`Pubkey`	Initial admin
`timestamp`	`i64`	Unix timestamp

DepositMinted

Field	Type	Description
`user`	`Pubkey`	User who deposited
`usdc_amount`	`u64`	USDC deposited
`wrapper_minted`	`u64`	x0-USD minted (1:1)
`reserve_balance`	`u64`	New reserve balance
`outstanding_supply`	`u64`	New outstanding supply
`timestamp`	`i64`	Unix timestamp

RedemptionCompleted

Field	Type	Description
`user`	`Pubkey`	User who redeemed
`amount_burned`	`u64`	x0-USD burned
`usdc_paid`	`u64`	USDC paid out (after fee)
`fee_collected`	`u64`	Fee collected
`reserve_balance`	`u64`	New reserve balance
`outstanding_supply`	`u64`	New outstanding supply
`timestamp`	`i64`	Unix timestamp

ReserveAlert

Field	Type	Description
`reserve_ratio`	`u64`	Reserve ratio scaled by 10000
`reserve_balance`	`u64`	Current reserve balance
`outstanding_supply`	`u64`	Current outstanding supply
`severity`	`AlertLevel`	`Warning` or `Critical`
`timestamp`	`i64`	Unix timestamp

AlertLevel enum:

Warning — Reserve ratio below 1.01 (less than 1% overcollateralization)
Critical — Reserve ratio below 1.0 (undercollateralized)

WrapperPausedEvent

Field	Type	Description
`config`	`Pubkey`	Wrapper config PDA
`is_paused`	`bool`	Whether wrapper is now paused
`admin`	`Pubkey`	Admin who triggered the action
`timestamp`	`i64`	Unix timestamp

FeeRateUpdated

Field	Type	Description
`config`	`Pubkey`	Wrapper config PDA
`old_fee_bps`	`u16`	Previous fee rate in basis points
`new_fee_bps`	`u16`	New fee rate in basis points
`admin`	`Pubkey`	Admin who made the change
`timestamp`	`i64`	Unix timestamp

AdminActionScheduled

Field	Type	Description
`action`	`Pubkey`	Admin action PDA
`action_type`	`String`	Type of governance action
`scheduled_timestamp`	`i64`	When the action can be executed
`admin`	`Pubkey`	Admin who scheduled
`timestamp`	`i64`	Unix timestamp

AdminActionExecuted

Field	Type	Description
`action`	`Pubkey`	Admin action PDA
`action_type`	`String`	Type of action executed
`admin`	`Pubkey`	Admin who executed
`timestamp`	`i64`	Unix timestamp

AdminActionCancelled

Field	Type	Description
`action`	`Pubkey`	Admin action PDA
`admin`	`Pubkey`	Admin who cancelled
`timestamp`	`i64`	Unix timestamp

EmergencyWithdrawal

Field	Type	Description
`config`	`Pubkey`	Wrapper config PDA
`amount`	`u64`	Amount withdrawn
`destination`	`Pubkey`	Destination address
`admin`	`Pubkey`	Admin who executed
`timestamp`	`i64`	Unix timestamp

AdminTransferred

Field	Type	Description
`config`	`Pubkey`	Wrapper config PDA
`old_admin`	`Pubkey`	Previous admin
`new_admin`	`Pubkey`	New admin
`timestamp`	`i64`	Unix timestamp

Subscribing to Events

Using Anchor

import { Program, AnchorProvider } from '@coral-xyz/anchor';

const program = new Program(idl, programId, provider);

// Listen for specific events
const listener = program.addEventListener('TransferValidated', (event, slot) => {
  console.log(`Transfer of ${event.amount} validated at slot ${slot}`);
  console.log(`24h spend: ${event.currentSpend24h}`);
});

// Remove listener
program.removeEventListener(listener);

Using Transaction Logs

Events are encoded in Solana transaction logs. Parse them from confirmed transactions:

const tx = await connection.getTransaction(signature, {
  commitment: 'confirmed',
});

const eventParser = new EventParser(programId, new BorshCoder(idl));
for (const event of eventParser.parse(tx.meta.logMessages)) {
  console.log(event.name, event.data);
}

Overview

Core Programs

Zero-Knowledge

Application Layer

Reference

​Guard Events

​PolicyCreated

​PolicyUpdated

​AgentRevoked

​TransferValidated

​TransferRejected

​BlinkGenerated

​WhitelistUpdated

​Escrow Events

​EscrowCreated

​EscrowFunded

​DeliveryMarked

​DisputeInitiated

​FundsReleased

​FundsRefunded

​DisputeResolved

​Registry Events

​AgentRegistered

​RegistryUpdated

​AgentDeregistered

​Reputation Events

​ReputationInitialized

​ReputationUpdated

​Token Events

​ConfidentialTransferExecuted

​AuditLog

​Protocol Events

​ProtocolConfigUpdated

​ProtocolPaused

​Wrapper Events

​WrapperInitialized

​DepositMinted

​RedemptionCompleted

​ReserveAlert

​WrapperPausedEvent

​FeeRateUpdated

​AdminActionScheduled

​AdminActionExecuted

​AdminActionCancelled

​EmergencyWithdrawal

​AdminTransferred

​Subscribing to Events

​Using Anchor

​Using Transaction Logs