> ## Documentation Index > Fetch the complete documentation index at: https://docs.optimism.io/llms.txt > Use this file to discover all available pages before exploring further. # Proposer Configuration > Reference for the op-proposer configuration options and the proposer policy constraints. This page lists all configuration options for op-proposer. The op-proposer posts output roots (proposals) to L1, making them available for verifiers. Withdrawals to L1 must reference an output root. If the chain is running permissioned fault proofs, only the [designated proposer](/op-stack/protocol/privileged-roles) can submit output roots. With [permissionless fault proofs](/op-stack/fault-proofs/explainer), anyone can make a proposal. ## Proposer policy The proposer policy defines high-level constraints and responsibilities regarding how L2 output roots are posted to L1. Below are the [standard guidelines](/op-stack/protocol/superchain-registry#what-is-a-standard-chain) for configuring the proposer within the OP Stack. | Parameter | Description | Administrator | Requirement | Notes | | ---------------- | ----------------------------------------------------------------------------------- | -------------- | ---------------------------------------------------------- | --------------------------------------------------------------- | | Output Frequency | Defines how frequently L2 output roots are submitted to L1 (via the output oracle). | L1 Proxy Admin | **43,200 L2 blocks** (24 hours at 2s block times) or lower | It cannot be set to 0 (there must be some cadence for outputs). | ### Example configuration ``` OP_PROPOSER_L1_ETH_RPC: YOUR_L1_RPC_URL_HERE OP_PROPOSER_ROLLUP_RPC: YOUR_CHAINS_RPC_URL_HERE OP_PROPOSER_GAME_FACTORY_ADDRESS: YOUR_CHAINS_GAME_FACTORY_ADDRESS_HERE OP_PROPOSER_PROPOSAL_INTERVAL: 5h OP_PROPOSER_WAIT_NODE_SYNC: true OP_PROPOSER_ALLOW_NON_FINALIZED: "false" OP_PROPOSER_POLL_INTERVAL: "20s" OP_PROPOSER_NUM_CONFIRMATIONS: "1" OP_PROPOSER_SAFE_ABORT_NONCE_TOO_LOW_COUNT: "3" OP_PROPOSER_RESUBMISSION_TIMEOUT: "30s" OP_PROPOSER_METRICS_ENABLED: "true" OP_PROPOSER_METRICS_ADDR: 0.0.0.0 OP_PROPOSER_METRICS_PORT: 7300 ``` Higher throughput chains can decrease the `proposal-interval` to allow users submit withdrawals more often. ## Flags The flag tables below are generated directly from the op-proposer's flag definitions in the monorepo (`op-proposer/flags`) at the release tag named in the provenance line, and are regenerated when a new finalized release is published, so they cannot silently fall behind. Every flag can also be set through the environment variable listed next to it. Generated from [`op-proposer/v1.16.3`](https://github.com/ethereum-optimism/optimism/releases/tag/op-proposer%2Fv1.16.3) flag definitions. 54 flags: 1 required, 53 optional. ### Required flags | Flag | Description | Environment variable | | -------------- | ------------------------ | ------------------------ | | `--l1-eth-rpc` | HTTP provider URL for L1 | `OP_PROPOSER_L1_ETH_RPC` | ### Optional flags | Flag | Description | Default | Environment variable | | --------------------------------------- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | ---------------------- | ------------------------------------------------- | | `--active-sequencer-check-duration` | The duration between checks to determine the active sequencer endpoint. | `2m0s` | `OP_PROPOSER_ACTIVE_SEQUENCER_CHECK_DURATION` | | `--allow-non-finalized` | Allow the proposer to submit proposals for L2 blocks derived from non-finalized L1 blocks. | `false` | `OP_PROPOSER_ALLOW_NON_FINALIZED` | | `--fee-limit-multiplier` | The multiplier applied to fee suggestions to put a hard limit on fee increases | `5` | `OP_PROPOSER_TXMGR_FEE_LIMIT_MULTIPLIER` | | `--game-factory-address` | Address of the DisputeGameFactory contract | — | `OP_PROPOSER_GAME_FACTORY_ADDRESS` | | `--game-type` | Dispute game type to create via the configured DisputeGameFactory | `0` | `OP_PROPOSER_GAME_TYPE` | | `--hd-path` | The HD path used to derive the sequencer wallet from the mnemonic. The mnemonic flag must also be set. | — | `OP_PROPOSER_HD_PATH` | | `--l2-output-hd-path` | DEPRECATED:The HD path used to derive the l2output wallet from the mnemonic. The mnemonic flag must also be set. | — | `OP_PROPOSER_L2_OUTPUT_HD_PATH` | | `--log.color` | Color the log output if in terminal mode | `false` | `OP_PROPOSER_LOG_COLOR` | | `--log.format` | Format the log output. Supported formats: text, terminal, logfmt, logfmtms, json, jsonms | `text` | `OP_PROPOSER_LOG_FORMAT` | | `--log.level` | The lowest log level that will be output | `INFO` | `OP_PROPOSER_LOG_LEVEL` | | `--log.pid` | Show pid in the log | `false` | `OP_PROPOSER_LOG_PID` | | `--metrics.addr` | Metrics listening address | `"0.0.0.0"` | `OP_PROPOSER_METRICS_ADDR` | | `--metrics.enabled` | Enable the metrics server | `false` | `OP_PROPOSER_METRICS_ENABLED` | | `--metrics.port` | Metrics listening port | `7300` | `OP_PROPOSER_METRICS_PORT` | | `--mnemonic` | The mnemonic used to derive the wallets for either the service | — | `OP_PROPOSER_MNEMONIC` | | `--network-timeout` | Timeout for all network operations | `10s` | `OP_PROPOSER_NETWORK_TIMEOUT` | | `--num-confirmations` | Number of confirmations which we will wait after sending a transaction | `10` | `OP_PROPOSER_NUM_CONFIRMATIONS` | | `--poll-interval` | Delay between periodic checks on whether it is time to load an output root and propose it. | `12s` | `OP_PROPOSER_POLL_INTERVAL` | | `--pprof.addr` | pprof listening address | `"0.0.0.0"` | `OP_PROPOSER_PPROF_ADDR` | | `--pprof.enabled` | Enable the pprof server | `false` | `OP_PROPOSER_PPROF_ENABLED` | | `--pprof.path` | pprof file path. If it is a directory, the path is \{dir}/\{profileType}.prof | — | `OP_PROPOSER_PPROF_PATH` | | `--pprof.port` | pprof listening port | `6060` | `OP_PROPOSER_PPROF_PORT` | | `--pprof.type` | pprof profile type. One of cpu, heap, goroutine, threadcreate, block, mutex, allocs | — | `OP_PROPOSER_PPROF_TYPE` | | `--private-key` | The private key to use with the service. Must not be used with mnemonic. | — | `OP_PROPOSER_PRIVATE_KEY` | | `--proposal-interval` | Interval between submitting L2 output proposals when the dispute game factory address is set | `0s` | `OP_PROPOSER_PROPOSAL_INTERVAL` | | `--resubmission-timeout` | Duration we will wait before resubmitting a transaction to L1 | `48s` | `OP_PROPOSER_RESUBMISSION_TIMEOUT` | | `--rollup-rpc` | HTTP provider URL for the rollup node. A comma-separated list enables the active rollup provider. | — | `OP_PROPOSER_ROLLUP_RPC` | | `--rpc.addr` | rpc listening address | `"0.0.0.0"` | `OP_PROPOSER_RPC_ADDR` | | `--rpc.enable-admin` | Enable the admin API | `false` | `OP_PROPOSER_RPC_ENABLE_ADMIN` | | `--rpc.port` | rpc listening port | `8545` | `OP_PROPOSER_RPC_PORT` | | `--safe-abort-nonce-too-low-count` | Number of ErrNonceTooLow observations required to give up on a tx at a particular nonce without receiving confirmation | `3` | `OP_PROPOSER_SAFE_ABORT_NONCE_TOO_LOW_COUNT` | | `--signer.address` | Address the signer is signing requests for | — | `OP_PROPOSER_SIGNER_ADDRESS` | | `--signer.endpoint` | Signer endpoint the client will connect to | — | `OP_PROPOSER_SIGNER_ENDPOINT` | | `--signer.header` | Headers to pass to the remote signer. Format `key=value`. Value can contain any character allowed in a HTTP header. When using env vars, split with commas. When using flags one key value pair per flag. | — | `OP_PROPOSER_SIGNER_HEADER` | | `--signer.tls.ca` | tls ca cert path | `"tls/ca.crt"` | `OP_PROPOSER_SIGNER_TLS_CA` | | `--signer.tls.cert` | tls cert path | `"tls/tls.crt"` | `OP_PROPOSER_SIGNER_TLS_CERT` | | `--signer.tls.enabled` | Enable or disable TLS client authentication for the signer | `true` | `OP_PROPOSER_SIGNER_TLS_ENABLED` | | `--signer.tls.key` | tls key | `"tls/tls.key"` | `OP_PROPOSER_SIGNER_TLS_KEY` | | `--supernode-rpcs` | HTTP provider URLs for the supernode instances. Multiple URLs can be provided to automatically fail over. | — | `OP_PROPOSER_SUPERNODE_RPCS` | | `--txmgr.already-published-custom-errs` | List of custom RPC error messages that indicate that a transaction has already been published. | — | `OP_PROPOSER_TXMGR_ALREADY_PUBLISHED_CUSTOM_ERRS` | | `--txmgr.cell-proof-time` | Enables cell proofs in blob transactions for Fusaka (EIP-7742) compatibility from the provided unix timestamp. Should be set to the L1 Fusaka time. May be left blank for Ethereum Mainnet, Sepolia, Holesky, or Hoodi L1s. | `18446744073709551615` | `OP_PROPOSER_TXMGR_CELL_PROOF_TIME` | | `--txmgr.fee-limit-threshold` | The minimum threshold (in GWei) at which fee bumping starts to be capped. Allows arbitrary fee bumps below this threshold. | `100` | `OP_PROPOSER_TXMGR_FEE_LIMIT_THRESHOLD` | | `--txmgr.max-basefee` | Enforces a maximum base fee (in GWei) to assume when determining tx fees, `TxMgr` returns an error when exceeded. Disabled by default. | `0` | `OP_PROPOSER_TXMGR_MAX_BASEFEE` | | `--txmgr.max-retries` | Maximum number of times to resubmit a transaction to L1 on a transient error. Set to 0 to disable retries. | `10` | `OP_PROPOSER_TXMGR_MAX_RETRIES` | | `--txmgr.max-tip-cap` | Enforces a maximum tip cap (in GWei) to use when determining tx fees, `TxMgr` returns an error when exceeded. Disabled by default. | `0` | `OP_PROPOSER_TXMGR_MAX_TIP_CAP` | | `--txmgr.min-basefee` | Enforces a minimum base fee (in GWei) to assume when determining tx fees. 1 GWei by default. | `1` | `OP_PROPOSER_TXMGR_MIN_BASEFEE` | | `--txmgr.min-tip-cap` | Enforces a minimum tip cap (in GWei) to use when determining tx fees. 1 GWei by default. | `1` | `OP_PROPOSER_TXMGR_MIN_TIP_CAP` | | `--txmgr.not-in-mempool-timeout` | Timeout for aborting a tx send if the tx does not make it to the mempool. | `2m0s` | `OP_PROPOSER_TXMGR_TX_NOT_IN_MEMPOOL_TIMEOUT` | | `--txmgr.rebroadcast-interval` | Interval at which a published transaction will be rebroadcasted if it has not yet been mined. Should be less than ResubmissionTimeout to have an effect. | `12s` | `OP_PROPOSER_TXMGR_REBROADCAST_INTERVAL` | | `--txmgr.receipt-query-interval` | Frequency to poll for receipts | `12s` | `OP_PROPOSER_TXMGR_RECEIPT_QUERY_INTERVAL` | | `--txmgr.retry-interval` | Duration we will wait before resubmitting a transaction to L1 on a transient error. Values \<= 0 will result in retrying immediately. Should be less than ResubmissionTimeout to have an effect. | `1s` | `OP_PROPOSER_TXMGR_RETRY_INTERVAL` | | `--txmgr.send-timeout` | Timeout for sending transactions. If 0 it is disabled. | `0s` | `OP_PROPOSER_TXMGR_TX_SEND_TIMEOUT` | | `--wait-node-sync` | Indicates if, during startup, the proposer should wait for the rollup node to sync to the current L1 tip before proceeding with its driver loop. | `false` | `OP_PROPOSER_WAIT_NODE_SYNC` |