Black Knight (Acquired by ICE — Now ICE Mortgage Technology)
Black Knight, Inc. was a Jacksonville-based mortgage technology and data provider whose core franchises were MSP (the dominant US loan-servicing platform), LoanSphere (default, document, and decisioning suites), Empower LOS (mid-market loan origination), and the Optimal Blue secondary marketing / product-and-pricing engine. Intercontinental Exchange (NYSE: ICE) acquired Black Knight in September 2023 for approximately $11.7B (down from the originally-announced $13.1B in May 2022) after divesting Optimal Blue to Constellation Software's Perseus Operating Group as a condition of FTC clearance. Black Knight's product lines now sit inside ICE Mortgage Technology alongside Encompass (the ex-Ellie Mae LOS). The blackknightinc.com domain redirects to mortgagetech.ice.com, and developer surfaces have migrated to developer.ice.com (MSP DX APIs, Servicing Vault, Loss Mitigation, Payoffs, Promise To Pay) and developer.icemortgagetechnology.com (Encompass Developer Connect). Optimal Blue's APIs are now hosted at digitalmarketplace.optimalblue.com under independent Constellation Software ownership. This profile documents the API surfaces as they existed under Black Knight and tracks the post-acquisition fate of each product line.
Limited machine-readable signal and partial portal coverage — documentation a human can read, but little a machine or agent can consume without scraping.
API Evangelist profiles Black Knight (Acquired by ICE — Now ICE Mortgage Technology) the way a machine reads it — 43 machine-readable artifacts across 9 APIs, pulled from the provider's own public surface and indexed so a developer, an analyst, or an AI agent can evaluate it against every other provider on the network.
Every provider in the network is reduced to the same set of machine-readable artifacts — OpenAPI contracts, event specifications, GraphQL schemas, runnable collections, pricing and rate-limit signals, security posture, OAuth scopes, and the agent surfaces (MCP servers and skills) that let software drive the API on its own. We profile them because the interface is the part of a company you can actually inspect: it is a truer signal of what a provider does than any marketing page. From those artifacts we compute the Kin Score — Black Knight (Acquired by ICE — Now ICE Mortgage Technology) scores 38.6/100 (thin), with a separate agent-readiness read of 7/100 (human only). The full breakdown is below, followed by every artifact we hold — each card links through to its machine-readable definition on apis.io.
Kin Score
This is the API Evangelist rating — a single, repeatable read computed from the artifacts on this page. Green fill is points earned; the red track is points possible, so every bar shows earned-versus-possible at a glance.
Kin Score
How this is scored →scored 2026-07-27 · rubric v0.5
How we profile Black Knight (Acquired by ICE — Now ICE Mortgage Technology)
Each block below is one kind of artifact we hold for Black Knight (Acquired by ICE — Now ICE Mortgage Technology). For each we say what it is and why it earns a place in the profile, then list every one we've indexed — capped at two rows, scroll within the panel for the rest.
APIs 9
Each API is captured as its own OpenAPI definition — every operation, parameter, and response. This is the single most useful machine-readable description of what an API does, and it's what lets us score, lint, mock, and generate against it without asking the provider for anything.
Individual APIs this provider publishes, each with its own machine-readable definition.
MSP DX (Direct Exchange) APIs
MSP (Mortgage Servicing Platform) was Black Knight's flagship product — the mainframe-rooted system of record that services the majority of US first-mortgage loans. MSP DX (Dire...
Servicing Digital / Promise To Pay APIs
Borrower-facing servicing capabilities including the Promise To Pay API, which enables clients to document borrower payment promises along with reason codes, supporting collecti...
LoanSphere Default, Document & Decisioning Suite
LoanSphere was Black Knight's umbrella brand for default management (foreclosure, bankruptcy, loss-mitigation case management), document services (eClosing, eVault, eRecording v...
Empower LOS APIs
Empower was Black Knight's mid-to-enterprise loan origination system. After the ICE acquisition, Empower coexists with ICE's larger Encompass LOS (from the 2020 Ellie Mae acquis...
Encompass Developer Connect (sibling product under ICE)
Although Encompass came to ICE via the 2020 Ellie Mae acquisition (not Black Knight), it is now the canonical LOS API surface under ICE Mortgage Technology and effectively super...
Optimal Blue Product & Pricing APIs (divested to Constellation)
Optimal Blue's Product & Pricing Engine (PPE) generates eligible products and pricing for any user in any format and automates loan creation, locking, post-lock management, and ...
Optimal Blue Loan Trading APIs (Resitrader)
Workflow and data APIs for the Resitrader loan-trading application — execute trades, manage data modules, centralize trading operations. Now operated by Optimal Blue under Const...
Optimal Blue Business Intelligence APIs
Data tools including 16 Mortgage Market Rate Indices, integrable into dashboards. Successor to Black Knight's Originations Market Monitor and Mortgage Monitor data products at t...
Optimal Blue Broker Pricing APIs (Loansifter)
Loansifter is the turnkey PPE for mortgage brokers — generate and display eligible products and pricing across borrower scenarios. Originally a Black Knight (via Optimal Blue) p...
Scroll within the panel for all 9 ·
Pricing Plans 1
Pricing is part of the interface. Machine-readable plans tell you what a tier costs and includes before you commit — one of the six things the Kin Score reads for commercial clarity.
Published pricing tiers and plan structures.
Rate Limits 1
Rate limits are the difference between a demo that works and a production integration that doesn't fall over. Publishing them is an operational-transparency signal — and a hard requirement for any agent that plans its own throughput.
Documented rate limits and quota policies.
Black Knight Rate Limits
RATE LIMITSFinOps 1
Cost, billing, and metering signals let a buyer model the financial operations of an API before it's live. We profile them for the same reason we profile pricing: the money is part of the contract.
Cost, billing, and metering signals for API financial operations.
Black Knight Finops
FINOPSFeatures 7
The notable capabilities this provider advertises, captured as structured features so they can be searched and compared instead of read one landing page at a time.
Notable capabilities this provider offers.
MSP Loan Servicing of Record
Mainframe-rooted system of record that historically serviced the majority of US first mortgages; the largest single concentration in mortgage tech.
MSP DX REST APIs
Modern REST surface over MSP covering loan boarding, escrow, payments, payoffs, default management, loss mitigation, investor reporting, stop-advance, and ownership transfer.
LoanSphere Default Suite
Foreclosure, bankruptcy, and loss-mitigation case management; document services (eClosing, eVault, eRecording); decisioning analytics.
Empower LOS
Mid-to-enterprise loan origination system with partner-gated integration; now coexists with Encompass under ICE.
Optimal Blue PPE
Industry-dominant product-and-pricing engine for rate locks and secondary marketing; divested to Constellation Software in 2023.
Resitrader Loan Trading
Whole-loan trading platform; part of Optimal Blue, now Constellation.
16 Mortgage Market Rate Indices
Optimal Blue Business Intelligence APIs publish 16 mortgage rate indices derived from real-time PPE flow.
Scroll within the panel for all 7 ·
Semantic Vocabularies 1
JSON-LD contexts give the data shared meaning across APIs. We profile them because semantics are what let a machine reconcile 'customer' here with 'customer' somewhere else.
JSON-LD contexts and semantic vocabularies used across these APIs.
Black Knight Context
JSON-LDSpectral Rules 2
Governance rulesets we run against this provider's specs — the automated checks behind parts of the score. Profiling them makes the quality bar explicit and re-runnable, not a matter of opinion.
JSON Schema 6
Standalone JSON Schema definitions describe the data models behind the API. We profile them so the shapes are validatable on their own — useful long after a single request is forgotten.
Standalone JSON Schema definitions for this provider's data models.
MSP Escrow Item
JSON SCHEMAMSP Loan
JSON SCHEMAMSP Payment
JSON SCHEMAOptimal Blue Rate Lock
JSON SCHEMAOptimal Blue Pricing Search Result
JSON SCHEMAPromise To Pay
JSON SCHEMAJSON Structure 1
JSON Structure captures the data shapes in a form built for tooling — a complement to JSON Schema that keeps the model machine-legible.
JSON Structure definitions describing this provider's data shapes.
Msp Loan Structure
JSON STRUCTUREExamples 5
Real request and response payloads are what turn a spec from abstract into obvious — and they're one of the twelve things an agent needs to call an API correctly on the first try.
Example request and response payloads for these APIs.
Msp Loan Example
EXAMPLEMsp Payment Example
EXAMPLEOptimal Blue Lock Example
EXAMPLEOptimal Blue Pricing Example
EXAMPLESecurity Posture 1
Authentication, domain security, vulnerability disclosure, and trust-center signals — the evidence that a provider takes security seriously enough to document it. We profile it because you can't govern what you can't see.
Authentication, domain security, vulnerability disclosure, and trust-center signals.
Use Cases 5
What developers actually build with this provider — captured so the catalogue answers 'what is this for', not just 'what does this expose'.
What developers build with this provider.
Investor Loan Reporting
Servicers report loan-level activity to GSE and private investors via MSP DX investor-reporting APIs.
Default Workflow Automation
Default servicers automate foreclosure, bankruptcy, and loss-mitigation case management via Loss Mitigation and Collections APIs.
Secondary Marketing Rate Lock
Originators lock rates and price loans through Optimal Blue PPE APIs.
Whole Loan Trading
Aggregators trade whole loans through Resitrader APIs.
Borrower Promise To Pay
Servicers document borrower payment commitments through the Promise To Pay API for collection workflows.
Integrations 3
Pre-built integrations with other platforms tell you where this provider already fits in a stack.
Pre-built integrations with other platforms and tools.
Encompass (Ellie Mae) LOS
Sibling product under ICE; primary LOS integration target going forward.
ICE Fixed Income & Data Services
Cross-sell into ICE's broader data/markets platform.
Salesforce
Optimal Blue Integration Studio ships done-for-you Salesforce connectors.
Resources
Every other property we hold for Black Knight (Acquired by ICE — Now ICE Mortgage Technology) — documentation, portals, status pages, policies, and corporate surface — grouped by the job it does, following the integrator's arc from getting started to running in production.
Get Started 3
Portal, sign-up, and the first successful call
Design & Contract 3
Pagination, idempotency, versioning, errors, and events
Build 2
SDKs, sample code, and the tooling you integrate with
Access & Security 1
Authentication, authorization, and security posture
Operate 1
Status, limits, changes, and where to get help
Commercial 2
Pricing, plans, and the legal terms of use
Company 2
The organization behind the API
Other 2
Properties that don't map to a standard resource type
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