> ## Documentation Index > Fetch the complete documentation index at: https://docs.meteora.ag/llms.txt > Use this file to discover all available pages before exploring further. # DBC Program Events > Understand DBC dynamic_bonding_curve events emitted by config, transfer-hook, pool, swap, fee claim, migration, metadata, and operator flows. The `dynamic-bonding-curve` program emits most Anchor events through event CPI. Use this page when building indexers, analytics pipelines, charting systems, or low-level clients that need to map transactions back to DBC pool activity. ## Event CPI | Item | Value | | -------------------------------- | -------------------------------------------------------------- | | Event authority seed | `__event_authority` | | SDK helper | `deriveDbcEventAuthority()` | | Primary standard swap event | `EvtSwap2` | | Primary transfer-hook swap event | `EvtSwap2WithTransferHook` | | Deprecated compatibility event | `EvtCreateConfig` is deprecated; prefer `EvtCreateConfigV2`. | | Log-event exception | `EvtClaimProtocolFee2` is emitted with `emit!`, not event CPI. | ## Config And Metadata Events | Event | Emitted by | Important fields | Use | | ----------------------------------- | ---------------------------------------------------------------------------------- | -------------------------------------------------------------------------------------------------------- | ------------------------------------------------- | | `EvtCreateConfig` | `create_config` | `config`, `quote_mint`, `fee_claimer`, fee and curve fields | Deprecated config payload kept for compatibility. | | `EvtCreateConfigV2` | `create_config` | `config`, `quote_mint`, `fee_claimer`, `leftover_receiver`, `config_parameters` | Preferred config creation payload. | | `EvtCreateConfigV2WithTransferHook` | `create_config_with_transfer_hook` | `config`, `quote_mint`, `fee_claimer`, `leftover_receiver`, `config_parameters`, `transfer_hook_program` | Index transfer-hook configs. | | `EvtPartnerMetadata` | `create_partner_metadata` | `partner_metadata`, `fee_claimer` | Link partner metadata to a fee claimer. | | `EvtVirtualPoolMetadata` | `create_virtual_pool_metadata` | `virtual_pool_metadata`, `virtual_pool` | Link pool metadata to a virtual pool. | | `EvtInitializePool` | `initialize_virtual_pool_with_spl_token`, `initialize_virtual_pool_with_token2022` | `pool`, `config`, `creator`, `base_mint`, `pool_type`, `activation_point` | Index new DBC pools. | | `EvtInitializePoolWithTransferHook` | `initialize_virtual_pool_with_token2022_transfer_hook` | `pool`, `config`, `creator`, `base_mint`, `pool_type`, `activation_point` | Index new transfer-hook DBC pools. | | `EvtUpdatePoolCreator` | `transfer_pool_creator` | `pool`, `creator`, `new_creator` | Track creator authority transfer. | ## Swap Events | Event | Emitted by | Important fields | Use | | ---------------------------------- | -------------------------------------------------------- | --------------------------------------------------------------------------------------------------------------------------------------------------------- | ------------------------------------------------------------------------------------------- | | `EvtSwap` | `swap`, `swap2` | `pool`, `config`, `trade_direction`, `has_referral`, `params`, `swap_result`, `amount_in`, `current_timestamp` | Legacy/simple swap payload. | | `EvtSwap2` | `swap`, `swap2` | `pool`, `config`, `trade_direction`, `has_referral`, `swap_parameters`, `swap_result`, `quote_reserve_amount`, `migration_threshold`, `current_timestamp` | Preferred swap payload for charting, progress, fees, and exact-out or partial-fill support. | | `EvtCurveComplete` | `swap`, `swap2` when the threshold is reached | `pool`, `config`, `base_reserve`, `quote_reserve` | Mark bonding curve completion and migration readiness. | | `EvtSwap2WithTransferHook` | `swap2_with_transfer_hook` | `pool`, `config`, `trade_direction`, `has_referral`, `swap_parameters`, `swap_result`, `quote_reserve_amount`, `migration_threshold`, `current_timestamp` | Preferred transfer-hook swap payload. | | `EvtCurveCompleteWithTransferHook` | `swap2_with_transfer_hook` when the threshold is reached | `pool`, `config`, `base_reserve`, `quote_reserve` | Mark transfer-hook bonding curve completion and hook revocation. | ### EvtSwap2 Payload | Field | Meaning | | --------------------------------------------------------- | ----------------------------------------------------------------------------- | | `trade_direction` | `0` base to quote, `1` quote to base. | | `has_referral` | Whether referral fee was included in the fee split. | | `swap_parameters.amount_0` | Input for exact-in and partial-fill, or requested output for exact-out. | | `swap_parameters.amount_1` | Minimum output for exact-in and partial-fill, or maximum input for exact-out. | | `swap_parameters.swap_mode` | `0` exact in, `1` partial fill, `2` exact out. | | `swap_result.included_fee_input_amount` | Input amount before excluded-fee adjustment. | | `swap_result.excluded_fee_input_amount` | Amount that moved the curve after fee handling. | | `swap_result.amount_left` | Unused amount in partial-fill mode. | | `swap_result.output_amount` | Output token amount. | | `swap_result.next_sqrt_price` | Post-swap sqrt price. | | `swap_result.trading_fee`, `protocol_fee`, `referral_fee` | Fee split for the swap. | | `quote_reserve_amount` | Quote reserve after the swap. Use this for progress charts. | | `migration_threshold` | Configured quote threshold for migration readiness. | Do not reconstruct DBC price from token transfer logs. Use `EvtSwap2`, quote helpers, and account state so fee-adjusted amounts, partial fills, and `next_sqrt_price` are handled correctly. ## Fee And Claim Events | Event | Emitted by | Important fields | Use | | -------------------------------- | --------------------------------------------------------- | -------------------------------------------------------- | ------------------------------------------------------------ | | `EvtClaimTradingFee` | `claim_trading_fee`, `claim_trading_fee2` | `pool`, `token_base_amount`, `token_quote_amount` | Partner trading fee claim. | | `EvtClaimCreatorTradingFee` | `claim_creator_trading_fee`, `claim_creator_trading_fee2` | `pool`, `token_base_amount`, `token_quote_amount` | Creator trading fee claim. | | `EvtClaimProtocolFee` | `claim_protocol_fee` | `pool`, `token_base_amount`, `token_quote_amount` | Deprecated protocol trading fee claim. | | `EvtClaimProtocolFee2` | `claim_protocol_fee2` | `pool`, `receiver_token_account`, `token_mint`, `amount` | Protocol fee claim through the newer single-mint claim path. | | `EvtClaimPoolCreationFee` | `claim_protocol_pool_creation_fee` | `pool`, `receiver`, `creation_fee` | Protocol share of pool creation fee. | | `EvtPartnerClaimPoolCreationFee` | `claim_partner_pool_creation_fee` | `pool`, `partner`, `creation_fee`, `fee_receiver` | Partner share of pool creation fee. | ## Migration And Withdrawal Events | Event | Emitted by | Important fields | Use | | ----------------------------------- | ---------------------------------------- | ---------------------------------------------- | ---------------------------------------- | | `EvtCreateMeteoraMigrationMetadata` | `migration_meteora_damm_create_metadata` | `virtual_pool` | DAMM v1 migration metadata creation. | | `EvtPartnerWithdrawSurplus` | `partner_withdraw_surplus` | `pool`, `surplus_amount` | Partner surplus withdrawal. | | `EvtCreatorWithdrawSurplus` | `creator_withdraw_surplus` | `pool`, `surplus_amount` | Creator surplus withdrawal. | | `EvtWithdrawLeftover` | `withdraw_leftover` | `pool`, `leftover_receiver`, `leftover_amount` | Leftover base-token withdrawal. | | `EvtWithdrawMigrationFee` | `withdraw_migration_fee` | `pool`, `fee`, `flag` | Migration fee withdrawal with role flag. | ## Operator Events | Event | Emitted by | Important fields | Use | | -------------------------- | ----------------------------------- | -------------------------------- | ------------------------------------ | | `EvtCloseClaimFeeOperator` | `close_claim_protocol_fee_operator` | `claim_fee_operator`, `operator` | Track protocol fee operator closure. | ## Indexing Notes 1. Treat `EvtSwap2.quote_reserve_amount / EvtSwap2.migration_threshold` as the event-side progress signal. 2. Reconcile event-derived progress with `VirtualPool.quote_reserve` from account state. 3. Index both `EvtInitializePool` and `EvtInitializePoolWithTransferHook`, plus pool accounts, so pools created before your indexer starts are still discoverable. 4. Store raw `swap_result` values for analytics; rounded UI values can lose fee and partial-fill detail. 5. For migrated pools, use DBC events to identify completion and destination AMM state to track post-migration trading.