How do I securely pass the Stark Bank ECDSA Private Key to MCP?

Inside Stark Bank, when you generate your API project, the website will generate a Public/Private Keypair or ask you to provide one. You must grab the **Private Key** (often starting with `-----BEGIN EC PRIVATE KEY-----`) and paste that entire raw multiline text into the `STARK_PRIVATE_KEY` input inside the MCP client perfectly as it is.

Can the bot process Corporate Card requests automatically?

Yes! If you instruct the agent to orchestrate the generation using the tool `stark_create_corporate_card`, the API instantly spins up a valid, active Corporate Virtual Card attached to your Master Balance in real-time.

How does the Stark Bank transfer function differ from basic gateway Pix?

Stark Transfer allows hyper granular outbounds. Instead of just pushing a basic Pix key, the `stark_create_transfer` can route massive payrolls, TED systems tracking `BankCode`, ISPB nodes and branch validation—giving you raw underlying banking protocol access.

Will Stark API throttle the connection if the Agent lists too many historic Boletos?

StarkBank allows huge enterprise-grade API ceilings per second. Pulling hundreds of statements using `stark_list_boletos` naturally respects rate limits easily while functioning inside LLM chat turns.

Stark Bank MCP Connector for Claude

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Equip your AI with Brazil's enterprise Developer Bank. Automate corporate virtual cards, Boletos, Outbound Pix (Transfers), and statements inside chats.

9 tools Official Updated Jun 28, 2026 Official Vinkius Partner

More Details Connect to Claude

The Stark Bank MCP Server brings highest-end Brazilian financial tech directly into your Agent's context. Engineered specifically for complex corporate maneuvers and heavy automations requiring zero filesystem intervention—authentication is fully handled via ECDSA public/private cryptography inside the MCP.

What you can do

Mass Corporate Payables (Transfers) — You can ask your chatbot to send Pix out to specific people, or execute TED transfers programmatically parsing bank codes and taxes.
Asset Generation — Rapidly generate virtual Corporate Cards or Boletos targeting specific customer strings.
Unmatched Oversight — Check precisely the atomic balance of your Stark accounts or extract statements and invoice status tracking in milliseconds.

How it works

Use your Stark Bank Dashboard to get your Project ID.
Through your Stark Bank app dashboard or API settings, generate an ECDSA Private/Public Key.
Paste the actual raw physical Private Key multiline PEM block into your MCP credentials inside your Vinkius application.

Who is this for?

CFOs & Digital Financiers — Trigger high-volume payment transfers across arrays of workers instantly from the console.
Infrastructure Ops — Rotate corporate cards when limits trigger by simply pinging your AI sidekick.

corporate-bankingpix-transfersecdsa-cryptographyfinancial-automationvirtual-cardsapi-banking

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