MCP Architecture Guide for Financial Services: Connecting Trading & Client Systems to AI Agents

# Bloomberg MCP Server — runs on YOUR servers
tools:
  - get_market_data(symbol, fields, date_range)
  - get_company_fundamentals(ticker, metrics)
  - search_securities(query, asset_class, region)
  - get_news(topic, date_range, relevance)

# Salesforce Financial Cloud MCP Server — runs on YOUR servers
tools:
  - search_clients(query, advisor, segment)
  - get_portfolio_summary(client_id)
  - get_client_interactions(client_id, date_range)
  - get_compliance_flags(client_id)

Advisor asks:
  "What's the current allocation for the Henderson
   account and how has it performed this quarter?"

Broker routes to:
  1. Salesforce MCP → get_portfolio_summary("henderson")
  2. Portfolio MCP → get_performance("henderson", "Q1-2026")

Agent responds:
  "The Henderson account has a 60/40 equity-bond
   allocation with $2.3M AUM. Q1 2026 performance
   is +4.2% vs. benchmark +3.8%. The account is
   overweight in technology at 28% vs. target 22%."

All data stayed on your servers.

Advisor asks:
  "What's the Chen portfolio's exposure to regional
   banking, and are there any compliance flags I
   should know about?"

Agent flow:
  1. Portfolio MCP → get_holdings("chen",
       sector="financials", subsector="regional_banks"
     )
  2. Bloomberg MCP → get_market_data(
       symbols=["KRE", "regional_bank_holdings"],
       fields=["price", "change_1d", "vol_30d"]
     )
  3. Compliance MCP → get_compliance_flags("chen")

Agent responds:
  "The Chen portfolio has 8.3% exposure to regional
   banking through 4 positions ($186K total):
   - First Republic: $62K (-3.2% today)
   - Valley National: $48K (-1.8% today)
   - Webster Financial: $44K (-2.1% today)
   - Glacier Bancorp: $32K (-0.9% today)

   Compliance flag: concentration exceeds the 7%
   sector limit in the IPS. Rebalancing recommended.

   No regulatory flags on the account."

All processing on your servers.

Compliance officer asks:
  "Show me all NVDA trades in the 5 days before
   their Q4 earnings announcement, and flag any
   accounts with prior restricted-list hits."

Agent flow:
  1. Trading MCP → get_trades(
       symbol="NVDA",
       date_range="2026-01-20 to 2026-01-25"
     )
  2. Compliance MCP → check_restricted_list(
       accounts=[...from_trades],
       symbol="NVDA"
     )
  3. Communications MCP → search_messages(
       accounts=[...flagged],
       keywords=["NVDA", "earnings", "nvidia"],
       date_range="2026-01-15 to 2026-01-25"
     )

Agent responds:
  "14 NVDA trades across 8 accounts in the 5-day
   window. 2 accounts flagged:

   - Account #4521 (J. Martinez): Bought 500 shares
     on 1/22. This account had a restricted-list hit
     for NVDA in Q2 2025. 3 email mentions of
     'nvidia earnings' found in the window.
     RECOMMEND: Escalate to senior compliance.

   - Account #7833 (K. Patel): Bought 200 shares
     on 1/24. No prior restricted-list hits. No
     relevant communications found.
     RECOMMEND: Document and close.

   Full trade log and communications export
   attached for the investigation file."

No data left your network.
Full audit trail generated for SEC/FINRA.

Advisor asks:
  "Run KYC/AML due diligence for new client
   Meridian Holdings LLC and its beneficial owners
   James Chen and Sarah Park."

Agent flow:
  1. Compliance MCP → screen_sanctions(
       entities=["Meridian Holdings LLC",
                 "James Chen", "Sarah Park"]
     )
  2. Compliance MCP → check_pep_status(
       individuals=["James Chen", "Sarah Park"]
     )
  3. Document MCP → verify_documents(
       client="Meridian Holdings LLC",
       docs=["articles_of_incorporation",
             "beneficial_ownership_form"]
     )

Agent responds:
  "KYC/AML screening complete for Meridian Holdings:

   Sanctions screening: CLEAR — no matches on OFAC,
   EU, or UN sanctions lists for any entity.

   PEP status: CLEAR — neither James Chen nor
   Sarah Park appear on PEP databases.

   Document verification:
   - Articles of incorporation: VERIFIED (Delaware,
     filed 2019)
   - Beneficial ownership form: RECEIVED, pending
     notarization for Sarah Park

   RECOMMENDATION: Proceed with account opening
   pending Sarah Park's notarized BO form.

   Risk classification: Standard (no enhanced
   due diligence triggers)."

All PII processed on your servers.

• ✓All MCP servers on firm infrastructure — no cloud relay, no third-party processing. Client data and trading intelligence never transit through any external system.
• ✓Air-gapped deployment available — for firms handling the most sensitive strategies, the entire AI infrastructure can run without internet connectivity.
• ✓Role-based access with Chinese wall enforcement — information barriers between departments enforced automatically. Only authorized personnel access specific client or trading data.
• ✓Full audit logs — every agent interaction logged with who asked, what was queried, and what was returned. Exportable for SEC examinations, FINRA reviews, and SOX compliance.
• ✓Client data sovereignty maintained — no client PII, account data, or trading information ever flows to any third party.
• ✓Full code ownership — you own the entire platform source code. Inspect, modify, and audit every line. No black-box vendor dependencies.
• ✓Encryption at rest and in transit — all data encrypted within your network. TLS between components, AES-256 at rest.
• ✓AI assists, never makes investment decisions — agents provide research, analysis, and compliance support. Humans maintain full authority over all investment and trading decisions.

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