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Bankr Dev - Arbitrary Transactions

Submit raw EVM transactions and pre-built calldata via the Bankr API.

80|30|Updated Jan 15, 2026
Search Tags:#blockchain#smart-contracts#evm#calldata#arbitrary-transactions#bankr-api
One-click install
npx skills add https://github.com/BankrBot/claude-plugins --skill bankr-dev-arbitrary-transactions
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: Bankr Dev - Arbitrary Transactions
Source: https://github.com/BankrBot/claude-plugins/tree/main/bankr-agent-dev/skills/bankr-arbitrary-transaction
Command: npx skills add https://github.com/BankrBot/claude-plugins --skill bankr-dev-arbitrary-transactions

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

Submitting raw EVM transactions or pre-built calldata requires precise formatting, validation, and reliable integration with Bankr. This skill streamlines constructing and sending low-level transactions to supported chains with safety checks and clear error handling.

Core Features & Use Cases

  • Submit raw calldata on-chain for contract interactions and value transfers.
  • Build and validate custom contract calls (to, data, value, chainId) with deterministic patterns.
  • Integrate with Bankr API across Ethereum-compatible networks (Ethereum, Polygon, Base, etc.) for automated workflows.

Quick Start

Submit a pre-built ERC-20 transfer calldata to a contract on the Base chain via Bankr.

Frequently Asked Questions about Bankr Dev - Arbitrary Transactions

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I submit raw EVM calldata to a smart contract using an API?▼

To submit raw EVM calldata, construct a JSON payload containing the target address, data, value, and chainId. The Bankr API validates this structure and executes the transaction on supported Ethereum-compatible chains.

What is the required JSON payload structure for sending arbitrary blockchain transactions?▼

The required JSON payload structure for arbitrary transactions includes four mandatory fields: 'to' for the recipient address, 'data' for the calldata, 'value' for the transfer amount, and 'chainId' for the target network.

Can I use this to automate pre-built contract calls across multiple Ethereum-compatible networks?▼

Yes, you can automate pre-built contract calls across multiple Ethereum-compatible networks like Ethereum, Polygon, and Base. The API enforces deterministic validation patterns for automated workflows across these supported chains.

Does the Bankr API validate recipient addresses and calldata before broadcasting to supported chains?▼

Yes, the API enforces robust address and calldata validation before broadcasting. If the pre-built transaction fails these safety checks, it provides clear error handling to prevent invalid submissions.

What are the limitations when submitting low-level transactions with pre-built calldata?▼

Limitations include strict adherence to the JSON payload structure and supported Ethereum-compatible chains. Transactions failing address or calldata validation will be rejected with clear error messages to ensure safe execution.

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