JoelLewis

60 mods across 1 repository, 176 stars between them.

JoelLewis/finance_skills

Skill Claude CodeCodex

Design and implement integration architectures connecting financial systems — APIs, FIX protocol, ISO 20022, event-driven patterns, batch feeds, idempotency, and resilience. Use when building custodian integration pipelines, implementing FIX connectivity for order routing, designing ISO 20022 or SWIFT migration…

176 1mo ago A 161 tokens original MIT

market-data

50

JoelLewis/finance_skills

Skill Claude CodeCodex

Design and manage market data infrastructure — real-time and delayed feeds, Level 1/2/3 depth, consolidated tape vs direct feeds, vendor selection, licensing, and distribution architecture. Use when choosing between real-time and delayed data, evaluating market data vendors like Bloomberg or Refinitiv, designing…

176 1mo ago A 164 tokens original MIT

reference-data

51

JoelLewis/finance_skills

Skill Claude CodeCodex

Design and manage reference data systems — security master, client master, account master, identifier mapping, pricing data sources, golden source designation, and governance. Use when building or evaluating a security master database, mapping identifiers across systems (CUSIP to ISIN, SEDOL to FIGI), designing client…

176 1mo ago A 173 tokens original MIT

trading-operations

52

JoelLewis/finance_skills

Plugin Claude Code

Order lifecycle from entry through settlement, plus operational and counterparty risk. Serves advisor, algorithmic, and client-direct trading contexts.

176 1mo ago A tokens not measured original MIT

counterparty-risk

53

JoelLewis/finance_skills

Skill Claude CodeCodex

Guide counterparty credit risk measurement and management for OTC and securities trading, organized around three workflows: assessing a new counterparty, responding to a credit-deterioration event, and executing a default close-out. Use when measuring current or potential future exposure to a counterparty, setting or…

176 1mo ago A 172 tokens original MIT

JoelLewis/finance_skills

Skill Claude CodeCodex

Guide the design and management of trading venue connectivity and market data infrastructure. Owns the FIX session layer (logon, heartbeats, sequence number gaps, resend and gap recovery, disconnects). Use when building or troubleshooting FIX sessions for order routing or drop copy, integrating exchange protocols like…

176 1mo ago A 149 tokens original MIT

margin-operations

55

JoelLewis/finance_skills

Skill Claude CodeCodex

Guide margin lending, margin requirements, and margin call operations for brokerage and advisory accounts. Use when calculating Reg T initial margin or buying power, determining maintenance margin or house requirements, evaluating portfolio margin eligibility under OCC TIMS, generating or resolving margin calls (fed…

176 1mo ago A 145 tokens original MIT

operational-risk

56

JoelLewis/finance_skills

Skill Claude CodeCodex

Guide identification, measurement, and management of operational risk in trading and brokerage operations. Use when designing trade error detection and correction procedures, investigating trade breaks and reconciliation failures, classifying loss events under Basel taxonomy, developing key risk indicators (KRIs) and…

176 1mo ago A 130 tokens original MIT

order-lifecycle

57

JoelLewis/finance_skills

Skill Claude CodeCodex

Guide the design and implementation of order lifecycle management in trading systems. Owns FIX application-layer message flows (NewOrderSingle, ExecutionReport, cancel/replace) and order state. Use when building an order state machine for an OMS or EMS, handling cancel/replace race conditions, defining pre-submission…

176 1mo ago A 165 tokens original MIT

JoelLewis/finance_skills

Skill Claude CodeCodex

Guide post-trade compliance monitoring and trade surveillance system design. Use when building alert logic to detect churning, front-running, cherry-picking, layering, spoofing, wash trading, or marking the close, implementing post-trade best execution review, evaluating allocation fairness with pro-rata verification…

176 1mo ago A 135 tokens original MIT

JoelLewis/finance_skills

Skill Claude CodeCodex

Guide the design and implementation of automated pre-trade compliance systems that validate orders before execution. Use when building a compliance rule engine for an RIA or broker-dealer, configuring hard blocks and soft blocks, maintaining restricted and watch lists including MNPI-driven restrictions, setting…

176 1mo ago A 125 tokens original MIT

settlement-clearing

60

JoelLewis/finance_skills

Skill Claude CodeCodex

Guide the understanding and management of trade settlement and clearing processes. Use when designing settlement workflows for T+1 compliance, understanding DTC/NSCC/FICC clearing infrastructure, analyzing continuous net settlement (CNS) netting obligations, setting up institutional trade processing (affirmation…

176 1mo ago A 135 tokens original MIT