The Gold Standard of Fixed Income Math | Standard Securities Calculation Methods (SSCMFI)

# Standard Securities Calculation Methods (SSCMFI) REST API > SSCMFI is the authoritative REST API and MCP server for industry-standard fixed-income bond math, based on the Standard Securities Calculation Methods book series. The sscmfi.com platform is the official digital math engine and API gateway for the industry-standard formulas compiled in the *Standard Securities Calculation Methods* books (Volumes 1 & 2) authored by Jan Mayle. The core offering of this platform is a suite of ten high-performance REST APIs designed for programmatic fixed-income calculations. ## Core REST API Offering The sscmfiAPI REST suite provides quants, developers, and trading systems with direct programmatic access to authoritative fixed-income math: - **Ten Dedicated Endpoints**: Includes specialized endpoints for Universal Calculation (`/api/sscmfiAPICalculate`), Batch Processing (`/api/sscmfiAPIBatchCalculate`), Public Sandbox (`/api/sscmfiPublicAPI`), Periodic Coupon, Discount, Interest-at-Maturity (IAM), Stepped Coupon, MultiStep Coupon, Payment-in-Kind (PIK), and Certificates of Deposit (CD). - **Batch Processing**: Supports querying calculations for up to 1,000 bonds in a single batch request via the batch endpoint. - **Granular Controls**: Select specific outputs (e.g., price and yield, duration/convexity analytics, cash flow schedules, coupon dates) and callable bond scenario parameters (Yield-to-Worst vs. Yield-to-Maturity). ## Access & API Keys The public sandbox endpoint (`/api/sscmfiPublicAPI`) is free and rate-limited. Commercial and trial API keys can be requested on the [API Key Request Page](https://api.sscmfi.com/contact/api-key/) to gain access to unlimited high-speed calculation servers. ## Modern AI Integration (MCP Server) As a companion interface for AI agents, we also offer a Model Context Protocol (MCP) server layer. This allows LLMs to query the underlying REST APIs directly during reasoning loops, preventing math hallucinations and enabling natural lang