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Notis

Clean up multichain monitoring automatically

End cross-chain watches when the originating system says the work is complete.

Trigger

Webhook received

Notis starts this workflow when an external tool or custom backend sends an HTTP request.

Action

Unsubscribe Multichain

Tool to unsubscribe from events across multiple chains using the multichain sdk. use after stopping monitoring of an address or transaction to clean up resources, e.g., call: blocknative.unsubscribe({ id: '0x..', chainid: '0x1' }).

Why this helps

Multichain subscriptions are easy to forget after an incident, migration, or completed transaction.

  • Close watches across all specified chains
  • Reduce monitoring noise after completion
  • Keep subscription lifecycle connected to your systems

Setup

Build it in a few focused steps.

  • 1Connect Blocknative in Notis once.
  • 2Create an automation for multichain watch cleanup.
  • 3Tell Notis to read the identifier and chain details from the webhook payload, then prepare the Blocknative multichain unsubscribe request.
  • 4Choose a Notis webhook trigger and its endpoint.
  • 5Select a report channel and test with one real cleanup payload.

Questions about this workflow

Can this handle several chains in one request?

Yes. Include every chain that belongs to the multichain subscription in the webhook payload.

What if the identifier is missing?

Notis should report the incomplete payload and avoid preparing an ambiguous unsubscribe request.

When this happens · Trigger

Do this · Action

Supported Triggers and Actions

Notis builds workflows that link Todoist to Blocknative. A trigger fires from one place; an action lands in another.

Todoist triggers

Blocknative actions

Recurring trigger

Notis starts this workflow on a schedule, such as daily, weekly, or during business hours.

TriggerScheduled

Configure Mempool Filters

Tool to configure filters and abi decoding for ethereum mempool transactions. use after establishing a blocknative websocket connection to set up event filters and decoding.

ActionInstant

Webhook trigger

Notis starts this workflow when an external tool or custom backend sends an HTTP request.

TriggerInstant

Get Gas Price Distribution

Tool to retrieve the current mempool gas price distribution breakdown. use when analyzing gas price trends or preparing fee strategies.

ActionInstant

New Task Created

Trigger when a new task is added to Todoist.

TriggerPolling

Get Gas Oracles

Tool to retrieve metadata on supported gas oracles per chain. use when you need to dynamically discover all available on-chain gas estimation oracles across networks.

ActionInstant

Get Gas Prices

Tool to fetch gas price estimates for specific inclusion probabilities. use when you need gas price ranges for the next block or next ~10 seconds.

ActionInstant

Get Supported Chains

Tool to retrieve supported chains metadata. use when discovering available networks for blocknative gas services.

ActionInstant

Get Base Fee Estimates

Tool to get real-time predictions for base fee and blob base fee for the next 5 blocks. use when you need both 99% and 50% confidence estimates for upcoming blocks.

ActionInstant

Subscribe Multichain

Tool to generate websocket subscription details for events across multiple chains. use when preparing to track a transaction hash or account address across chains via blocknative multichain sdk.

ActionInstant

Subscribe Transaction Hash

Tool to subscribe to transaction state change events of an ethereum transaction hash. use after establishing a blocknative websocket connection to prepare the subscription message.

ActionInstant

Connect any two apps with Notis in the middle.

Todoist and Blocknative, or any other combination from 1,000+ integrations.

When this happens · Trigger

Do this · Action

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