Fintech: Merchant Underwriting Review with Claude Code: MCP Tool Boundary
A production playbook for merchant underwriting review in fintech operations using Claude Code: mcp tool boundary, run-scoped inputs, logs, typed results, and artifacts.
Audience: Fintech risk teams underwriting merchants
The problem
Fintech risk teams underwriting merchants need merchant underwriting review to run repeatedly against applications, bank statements, websites, KYC docs, and risk policies. In fintech operations, the pain is not one good answer; it is repeatability, auditability, exception handling, and evidence that survives handoff.
Implementation path
Expose only the MCP tools needed for merchant underwriting review, validate tool arguments, keep credentials in the owning service, and log each call outside the sandbox.
Tradeoffs and failure modes
Narrow tool boundaries reduce agent flexibility, but make the integration reviewable and supportable. For merchant underwriting review, the practical test is whether a second run can be debugged, retried, and consumed by a product without reading the raw agent transcript.
Tool policy
tool: fintech-underwriting-review_lookup
agent: Claude Code
input_scope: /skill/.argo/inputs
credential_owner: broker
log_arguments: true
network_policy: allowlisted
Run this on Argo