Onchain workflow automation · Rust · self-hosted

Ship production onchain workflows without building the control plane.

rflow turns GitHub-Actions-shaped YAML into durable, reorg-aware automation for EVM chains. Watch events, evaluate conditions, approve and simulate transactions, and recover work from a Postgres journal—all in one self-hosted binary.

Start building Read the docs

Embedded rindexerEmbedded rrelayerPostgres-backed state

workflows:
transfer-alert:
  trigger:
    event:
      contract: USDC
      name: Transfer
      network: ethereum
      where: "${{ trigger.args.value > wei('100000', 6) }}"
      confirmations: 20
  steps:
    - id: simulate
      read:
        contract: Treasury
        function: "canAccept(address,uint256)"
    - id: alert
      notify:
        channel: ops
        message: "large transfer: ${{ trigger.tx_hash }}"

Durable executionretained trigger identities dedupe runs; transaction submissions carry idempotency keys

Reorg-awarehead-speed alerts, depth-gated payments, and explicit reorg handlers

Any custodyraw keys, KMS, secret managers, Fireblocks, Turnkey, Privy, and more

What it replaces

One workflow engine instead of a pile of bots, queues, and scripts.

Decoded onchain triggers

Fire workflows from events, blocks, cron schedules, webhooks, SQL polls, view-function reads, streams, or composite conditions.

Transaction execution

Send cross-chain transactions with nonce management, gas bumping, confirmation policies, simulations, and relayer guardrails.

Production reliability

Persist cursors, throttle noisy triggers, rehearse historical triggers, and inspect run state when operations get real.

Human approval gates

Add deliberate pauses before risky actions, timeouts, notifications, and auditable decisions without leaving your workflow definition.

HTTP calls, notifications and local commands need their own idempotency when external effects can repeat after a crash. Read the execution guarantees and rehearsal limits before enabling consequential workflows.

The operating model

Declare the workflow. rflow owns the boring hard parts.

You describe what should happen. rflow handles indexing, state, idempotency, relaying, confirmations, retries, failure handling, observability, and backfill/live handoff.

ObserveTail chain data, webhook payloads, schedules, or indexed SQL.
DecideEvaluate strict expressions, budgets, simulations, and approvals.
ActSend transactions, call HTTP services, run commands, and notify teams.
RecoverHandle retries, reorgs, failures, backfills, and state repair.

Get moving

Install rflow, scaffold a workflow, and run it locally.

Install rflow