openbanking-mcp-server
Provides a Java (Spring Boot) Model Context Protocol (MCP) server that exposes UK Open Banking functionality (AISP account/balance/transactions and PISP payment initiation) to Claude Desktop via an MCP JSON-RPC (tools/list, tools/call) interface over stdio/bridge, with the server calling underlying UK Open Banking APIs using OAuth credentials.
Score Breakdown
⚙ Agent Friendliness
🔒 Security
README describes OAuth client credentials and suggests environment variables, which is better than hardcoding. However, no details are provided about token handling, secure storage, TLS enforcement, logging/PII redaction, webhook signatures, or fine-grained scopes. Payment initiation lacks documented idempotency and safety controls.
⚡ Reliability
Best When
You want to integrate UK Open Banking capabilities into an agent UI (Claude Desktop) using MCP tool discovery and invocation.
Avoid When
You need a fully standardized REST/SDK experience with explicit OpenAPI specs, or you require clear guarantees about idempotency, error codes, and operational reliability.
Use Cases
- • Chat-driven retrieval of UK bank accounts, balances, and transaction history via MCP tools
- • Natural-language initiation of domestic GBP payments (with confirmation and access token)
- • Building agent workflows around Open Banking data access and payment initiation
Not For
- • Production-ready payment processing without additional security hardening, testing, and operational controls
- • Use without proper OAuth access tokens and bank developer credentials
- • Highly regulated auditing/traceability requirements unless additional logging/compliance evidence is added
Interface
Authentication
README indicates OAuth redirect URI configuration and that MCP tool calls require an OAuth access_token argument. No explicit scope model is described in the provided content.
Pricing
Self-hosted open-source style project (no pricing described in README content provided). Open Banking API usage costs, if any, would be bank/partner-specific and not documented here.
Agent Metadata
Known Gotchas
- ⚠ Payment initiation likely requires explicit human confirmation; README suggests confirmation but does not enforce it structurally.
- ⚠ Tool calls require a valid OAuth access_token provided in tool arguments; agent must manage token lifecycle out-of-band.
- ⚠ Port/integration details are inconsistent in README (mcp URL uses 8081 in curl example and 8080 in Postman/testing sections), which can cause connection failures for agents.
- ⚠ No clear guidance on rate limits, backoff, or safe retry behavior is provided.
Alternatives
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Scores are editorial opinions as of 2026-04-04.