Fintech: Chargeback Dispute Packet Assembly with Claude Code: MCP Tool Boundary
A production playbook for chargeback dispute packet assembly in fintech operations using Claude Code: mcp tool boundary, run-scoped inputs, logs, typed results, and artifacts.
Audience: Fintech and payments operations teams
The problem
Fintech and payments operations teams need chargeback dispute packet assembly to run repeatedly against transaction records, customer messages, receipts, card network rules, and evidence files. 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 chargeback dispute packet assembly, 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 chargeback dispute packet assembly, 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-chargeback-dispute_lookup
agent: Claude Code
input_scope: /skill/.argo/inputs
credential_owner: broker
log_arguments: true
network_policy: allowlisted
Run this on Argo