Live 42 Actions

Finastra MCP Server
for AI Agents

Q: What AI frameworks and AI clients does the StackOne Finastra MCP server support?

The StackOne Finastra MCP server supports both. MCP clients (paste-and-go apps): Claude Desktop, Claude Code, Cursor, VS Code, Goose. Agent frameworks (code SDKs you build with): OpenAI Agents SDK, Anthropic, Vercel AI, Google ADK, CrewAI, Pydantic AI, LangChain, LangGraph, Azure AI Foundry.

Connect your AI agent to StackOne's Finastra MCP server and give it 42 MCP tools out of the box. Auth, tool execution, and security all managed.

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Finastra MCP Server

Built by

StackOne

Coverage

42 Agent Actions

Create, read, update, and delete across Finastra — and extend your agent's capabilities with custom actions.

MCP Actions → Build Actions →

Authentication

Agent Tool Authentication

Per-user OAuth in one call. Your Finastra MCP server gets session-scoped tokens with zero credentials stored on your infra.

Agent Auth →

Security

Agent Protection

Every Finastra tool response scanned for prompt injection in milliseconds — 88.7% accuracy, all running on CPU.

Prompt Injection Defense →

Performance

Max Agent Context. Min Cost.

Free up to 96% of your agent's context window to enhance reasoning and reduce cost, on every Finastra call.

Tools Discovery →

What is the Finastra MCP Server?

A Finastra MCP server lets AI agents read and write Finastra data through the Model Context Protocol — Anthropic's open standard for connecting LLMs to external tools. StackOne's Finastra MCP server ships with 42 pre-built actions, fully extensible via the Connector Builder — plus managed authentication, prompt injection defense, observability, and agent execution runtime. Connect it from MCP clients like Claude Desktop, Claude Code, Cursor, Goose, and VS Code, or from agent frameworks like OpenAI Agents SDK, LangChain, and Vercel AI SDK.

All Finastra MCP Tools

Every action from Finastra's API, ready for your agent. Create, read, update, and delete — scoped to exactly what you need.

Accounts

List Accounts
Display the list of accounts for the authenticated corporate user.
Get Account
Display the details of a single account by its id.

MT103 Beneficiarys

Create MT103 Beneficiary
Create a beneficiary for cross-border (MT103) funds transfers.
Update MT103 Beneficiary
Update an existing MT103 cross-border transfer beneficiary.

Domestic Beneficiarys

Create Domestic Beneficiary
Create a beneficiary for domestic funds transfers.
Update Domestic Beneficiary
Update an existing domestic transfer beneficiary.

Third Party Beneficiarys

Create Third Party Beneficiary
Create a beneficiary for third-party funds transfers.
Update Third Party Beneficiary
Update an existing third-party transfer beneficiary.

Counterpartys

Create Counterparty
Create a new trade counterparty for the authenticated corporate user.
Get Counterparty
Read the details of a single counterparty by its id.
Update Counterparty
Update an existing trade counterparty.
Delete Counterparty
Delete an existing counterparty by its id.

Term Deposits

Create Term Deposit
Create a term deposit transaction for the authenticated corporate user.
List Term Deposits
Fetch the list of term deposits for the authenticated corporate user.

Transactions

List Transactions
Transaction enquiry for the authenticated corporate user.
Get Transaction
Get the details of a single transaction by its id.

Other (26)

Send Reauthentication Code
Generate and send the reauthentication code for a transaction.
Create Internal Transfer
Initiate an internal funds transfer between the corporate's own accounts.
Create Third Party Transfer
Initiate a third-party funds transfer within the same bank.
Create Domestic Transfer
Initiate a domestic funds transfer to another bank.
Create Cross-Border Transfer
Initiate a cross-border (MT103) funds transfer.
List Account Balances By Type
Display account balances grouped by account type for the authenticated corporate user.
Get Account Balances
Display the balances of a single account by its id.
Get Account Statement
Display the statement entries for an account over a date range.
Get Reauthentication Type
Get the reauthentication type required to submit a transaction.
List Beneficiaries
Fetch the list of beneficiaries for the authenticated corporate user.
List Counterparties
Fetch the list of counterparties for the authenticated corporate user.
Get FX Rate
Get the exchange rate for a currency pair.
Get Term Deposit Configurations
Fetch the available term deposit configurations.
Get Transaction History
Get the user audit history for a transaction.
List Pending Transactions
List transactions pending the authenticated user's approval.
Delete Beneficiary
Delete an existing beneficiary by its account id.
Approve Transaction
Approve a pending transaction as the checker.
Approve Transaction With Rekey
Approve a pending transaction while re-keying verified fields.
Reject Transaction
Reject a pending transaction as the checker.
Approve Beneficiary
Approve a pending beneficiary as the checker.
Reject Beneficiary
Reject a pending beneficiary as the checker.
Return Beneficiary
Return a pending beneficiary for amendment as the checker.
Convert Amount
Convert an amount between two currencies at the current rate.
Validate Holidays And Cutoff
Validate non-working days and cutoff times for a prospective transfer.
Modify Term Deposit
Update an existing term deposit.
Withdraw Term Deposit
Withdraw an existing term deposit.

Set Up Your Finastra MCP Server in Minutes

One endpoint. Any framework. Your agent is talking to Finastra in under 10 lines of code.

MCP Clients

Agent Frameworks

Claude Desktop-

JSON

Claude Desktop Docs

{
  "mcpServers": {
    "stackone": {
      "command": "npx",
      "args": [
        "-y",
        "mcp-remote@latest",
        "https://api.stackone.com/mcp?x-account-id=<account_id>",
        "--header",
        "Authorization: Basic <YOUR_BASE64_TOKEN>"
      ]
    }
  }
}

Platform Resources

MCP Code Mode: Keeping Tool Responses Out of Agent Context

Anthropic's code_execution processes data already in context. Custom MCP code mode keeps raw tool responses in a sandbox. 14K tokens vs 500.

11 min

Comparing BM25, TF-IDF, and Hybrid Search for MCP Tool Discovery

Benchmarking BM25, TF-IDF, and hybrid search for MCP tool discovery across 916 tools. The 80/20 TF-IDF/BM25 hybrid hits 21% Top-1 accuracy in under 1ms.

10 min

Indirect Prompt Injection Defense for MCP Tools: A Technical Guide

MCP tools that read emails, CRM records, and tickets are indirect prompt injection vectors. Here's how we built a two-tier defense that scans tool results in ~11ms.

12 min

MCP vs A2A: Architecture, Security, and When to Use Each

MCP vs A2A: what each protocol standardizes, how they differ, their shared security risks including indirect prompt injection, and when to use one, both, or a hybrid architecture.

12 min

MCP vs API: What Hundreds of Connector Builds Taught Us

MCP wraps APIs, it doesn't replace them. After building hundreds of connectors that serve both, here's when each approach wins.

14 min read

Finastra MCP Server FAQ

Does StackOne have a Finastra MCP server?

Yes. StackOne offers a hosted Finastra MCP server with 42 pre-built actions, and every action is tested and QA'd by StackOne. Connect it to Claude, Cursor, and any other MCP client, or to any agent framework through the AI Action SDK. It ships with managed agent authentication, prompt injection defense, and tool discovery with server-side execution that preserve your agent's context window and keep reasoning performance.

Finastra MCP server vs direct API integration — what's the difference?

A Finastra MCP server and direct API integration serve different use cases. Direct API integration is for software-to-software — backend code calling Finastra. A Finastra MCP server is for AI agents — MCP clients like Claude and Cursor, plus framework agents built with OpenAI, LangChain, or Vercel AI — discovering and calling Finastra at runtime. StackOne provides both.

How does Finastra authentication work for AI agents?

Finastra authentication for AI agents works through a StackOne Connect Session. Create one via the dashboard or the SDK — you get an auth link and ready-to-paste config for Claude Desktop, Cursor, and other MCP clients. Your user authenticates their own Finastra account; StackOne handles token exchange, storage, and refresh. Credentials never reach the LLM, and each user is isolated via origin_owner_id.

Are Finastra MCP tools vulnerable to prompt injection?

Yes — Finastra MCP tools can be vulnerable to indirect prompt injection. Any tool that reads user-written content — documents, messages, tickets, records, or free-text fields — is a potential vector. StackOne Defender scans every tool response before it enters the agent's context — regex patterns in ~1ms, then a MiniLM classifier in ~4ms. 88.7% accuracy, CPU-only.

What is the context bloat of a Finastra agent and how do I avoid it?

Context bloat happens when Finastra tool schemas and API responses eat your Finastra agent's memory, preventing it from reasoning effectively. A single Finastra query can return a massive JSON response, and connecting multiple tools compounds the problem. Tools Discovery and Code Mode reduce context bloat — loading only relevant tools per query and keeping raw responses out of the agent's context.

Can I limit which actions my Finastra agent can access?

Yes — you can limit which actions your Finastra agent can access directly from the StackOne dashboard. Toggle actions on or off, or restrict them to specific accounts, with no code changes to your agent. Session tokens can be scoped to exact actions so if one leaks, exposure stays contained.

Can I create custom agent actions for my Finastra MCP server?

Yes — you can create custom agent actions for your Finastra MCP server using Connector Builder. It's an integration agent your coding assistant (Claude Code, Cursor, or Copilot) can invoke to research Finastra's API, generate production-ready connector YAML, test against the live API, and validate before you ship.

When should I NOT use a Finastra MCP server?

Skip a Finastra MCP server if your integration is purely software-to-software — direct Finastra API integration is simpler when no AI agent is involved. For deterministic, compliance-critical operations (financial transactions, regulatory reporting), direct API gives you predictable behavior without agent-driven decision-making. MCP shines when AI agents need to dynamically discover and call Finastra actions at runtime.

What AI frameworks and AI clients does the StackOne Finastra MCP server support?

The StackOne Finastra MCP server supports both. MCP clients (paste-and-go apps): Claude Desktop, Claude Code, Cursor, VS Code, Goose. Agent frameworks (code SDKs you build with): OpenAI Agents SDK, Anthropic, Vercel AI, Google ADK, CrewAI, Pydantic AI, LangChain, LangGraph, Azure AI Foundry.

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All the tools you need to build and scale AI agent integrations, with best-in-class connectivity, execution, and security.

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Finastra MCP Serverfor AI Agents