Middesk
Middesk is a business identity and verification platform providing a REST API for KYB (Know Your Business) compliance, EIN/TIN validation, business registration verification, UBO research, sanctions screening, and ongoing business monitoring. Used by fintechs, lenders, and banks to automate onboarding and compliance workflows.
Middesk publishes 28 APIs on the APIs.io network, including Subpackage Actions API, Subpackage Agents API, Subpackage Applications API, and 25 more. Tagged areas include Business Verification, KYB, Identity Verification, Compliance, and EIN Validation.
The Middesk catalog on APIs.io includes 1 JSON-LD context and 1 Spectral governance ruleset.
Middesk’s developer surface includes authentication, documentation, engineering blog, pricing, and 11 more developer resources.
Kin Score
APIs 28
Individual APIs this provider publishes, each with its own machine-readable definition.
Middesk Subpackage Actions API
The subpackage_actions API from Middesk — 2 operation(s) for subpackage_actions.
Middesk Subpackage Agents API
The subpackage_agents API from Middesk — 2 operation(s) for subpackage_agents.
Middesk Subpackage Applications API
The subpackage_applications API from Middesk — 1 operation(s) for subpackage_applications.
Middesk Subpackage Business Batches API
The subpackage_businessBatches API from Middesk — 3 operation(s) for subpackage_businessbatches.
Middesk Subpackage Businesses API
The subpackage_businesses API from Middesk — 3 operation(s) for subpackage_businesses.
Middesk Subpackage Companies API
The subpackage_companies API from Middesk — 1 operation(s) for subpackage_companies.
Middesk Subpackage Connections API
The subpackage_connections API from Middesk — 1 operation(s) for subpackage_connections.
Middesk Subpackage Documents API
The subpackage_documents API from Middesk — 3 operation(s) for subpackage_documents.
Middesk Subpackage Identities API
The subpackage_identities API from Middesk — 1 operation(s) for subpackage_identities.
Middesk Subpackage Information Requests API
The subpackage_informationRequests API from Middesk — 1 operation(s) for subpackage_informationrequests.
Middesk Subpackage Jurisdictions API
The subpackage_jurisdictions API from Middesk — 2 operation(s) for subpackage_jurisdictions.
Middesk Subpackage Liens API
The subpackage_liens API from Middesk — 2 operation(s) for subpackage_liens.
Middesk Subpackage Lien Terminations API
The subpackage_lienTerminations API from Middesk — 1 operation(s) for subpackage_lienterminations.
Middesk Subpackage Mail API
The subpackage_mail API from Middesk — 2 operation(s) for subpackage_mail.
Middesk Subpackage Monitoring API
The subpackage_monitoring API from Middesk — 2 operation(s) for subpackage_monitoring.
Middesk Subpackage Orders API
The subpackage_orders API from Middesk — 3 operation(s) for subpackage_orders.
Middesk Subpackage Policy Results API
The subpackage_policyResults API from Middesk — 1 operation(s) for subpackage_policyresults.
Middesk Subpackage Prefill API
The subpackage_prefill API from Middesk — 1 operation(s) for subpackage_prefill.
Middesk Subpackage Questions API
The subpackage_questions API from Middesk — 1 operation(s) for subpackage_questions.
Middesk Subpackage Registration Requests API
The subpackage_registrationRequests API from Middesk — 3 operation(s) for subpackage_registrationrequests.
Middesk Subpackage Reviews API
The subpackage_reviews API from Middesk — 1 operation(s) for subpackage_reviews.
Middesk Subpackage Runs API
The subpackage_runs API from Middesk — 4 operation(s) for subpackage_runs.
Middesk Subpackage Signals API
The subpackage_signals API from Middesk — 2 operation(s) for subpackage_signals.
Middesk Subpackage Threads API
The subpackage_threads API from Middesk — 2 operation(s) for subpackage_threads.
Middesk Subpackage Timeline API
The subpackage_timeline API from Middesk — 1 operation(s) for subpackage_timeline.
Middesk Subpackage Tin Match API
The subpackage_tinMatch API from Middesk — 1 operation(s) for subpackage_tinmatch.
Middesk Subpackage Webhooks API
The subpackage_webhooks API from Middesk — 3 operation(s) for subpackage_webhooks.
Middesk Subpackage Websites API
The subpackage_websites API from Middesk — 1 operation(s) for subpackage_websites.
Scroll for all 28
Open Collections 28
Open, tool-agnostic API collections (OpenAPI-derived and Bruno).
API Collection
OPEN COLLECTIONMiddesk subpackage_actions API
OPEN COLLECTIONMiddesk subpackage_actions subpackage_agents API
OPEN COLLECTIONMiddesk subpackage_actions subpackage_applications API
OPEN COLLECTIONMiddesk subpackage_actions subpackage_businessBatches API
OPEN COLLECTIONMiddesk subpackage_actions subpackage_businesses API
OPEN COLLECTIONMiddesk subpackage_actions subpackage_companies API
OPEN COLLECTIONMiddesk subpackage_actions subpackage_connections API
OPEN COLLECTIONMiddesk subpackage_actions subpackage_documents API
OPEN COLLECTIONMiddesk subpackage_actions subpackage_identities API
OPEN COLLECTIONMiddesk subpackage_actions subpackage_jurisdictions API
OPEN COLLECTIONMiddesk subpackage_actions subpackage_liens API
OPEN COLLECTIONMiddesk subpackage_actions subpackage_lienTerminations API
OPEN COLLECTIONMiddesk subpackage_actions subpackage_mail API
OPEN COLLECTIONMiddesk subpackage_actions subpackage_monitoring API
OPEN COLLECTIONMiddesk subpackage_actions subpackage_orders API
OPEN COLLECTIONMiddesk subpackage_actions subpackage_policyResults API
OPEN COLLECTIONMiddesk subpackage_actions subpackage_prefill API
OPEN COLLECTIONMiddesk subpackage_actions subpackage_questions API
OPEN COLLECTIONMiddesk subpackage_actions subpackage_runs API
OPEN COLLECTIONMiddesk subpackage_actions subpackage_signals API
OPEN COLLECTIONMiddesk subpackage_actions subpackage_threads API
OPEN COLLECTIONMiddesk subpackage_actions subpackage_timeline API
OPEN COLLECTIONMiddesk subpackage_actions subpackage_tinMatch API
OPEN COLLECTIONMiddesk subpackage_actions subpackage_webhooks API
OPEN COLLECTIONMiddesk subpackage_actions subpackage_websites API
OPEN COLLECTIONScroll for all 28
Pricing Plans 1
Published pricing tiers and plan structures.
FinOps 1
Cost, billing, and metering signals for API financial operations.
Middesk Finops
FINOPSSemantic Vocabularies 1
JSON-LD contexts and semantic vocabularies used across these APIs.
Middesk Context
JSON-LDSpectral Rules 1
Spectral governance rulesets for linting and validating these APIs.
Middesk API Rules
SPECTRALJSON Schema 18
Standalone JSON Schema definitions for this provider's data models.
Action
JSON SCHEMAAddress
JSON SCHEMABankruptcy
JSON SCHEMABusiness
JSON SCHEMABusinessBatch
JSON SCHEMACertification
JSON SCHEMADocument
JSON SCHEMAErrorResponse
JSON SCHEMALien
JSON SCHEMAMonitor
JSON SCHEMAOrder
JSON SCHEMAPerson
JSON SCHEMAPolicyResult
JSON SCHEMARegistration
JSON SCHEMAReview
JSON SCHEMASignal
JSON SCHEMAWatchlist
JSON SCHEMAWebsite
JSON SCHEMAScroll for all 18
Examples 7
Example request and response payloads for these APIs.
Middesk Create Order Example
EXAMPLEMiddesk File Lien Example
EXAMPLEMiddesk Get Business Example
EXAMPLEScroll for all 7
Security Posture 2
Authentication, domain security, vulnerability disclosure, and trust-center signals.
Agentic Access 1
Recommended x-agentic-access execution contracts for AI agents.
Resources
Documentation 1
Reference material describing how the API behaves
Agent Surfaces 1
MCP servers, agent skills, and machine-readable catalogs
Build 1
SDKs, sample code, and the tooling you integrate with
Access & Security 2
Authentication, authorization, and security posture
Operate 2
Status, limits, changes, and where to get help
Commercial 3
Pricing, plans, and the legal terms of use
Company 3
The organization behind the API
Other 2
Properties that don't map to a standard resource type
Source (apis.yml)
Work with this as data
Every provider here is available over the APIs.io API and to AI agents over MCP.