Unit
Unit is a Banking-as-a-Service (BaaS) platform that lets companies embed deposit accounts, cards, payments, and lending into their own products without becoming a bank. A single REST API, built on the JSON:API specification (media type application/vnd.api+json) and secured with Bearer/JWT tokens, covers onboarding (Applications), Customers, Deposit and Credit Accounts, Debit and Credit Cards, real-time card Authorizations, Payments (Book, ACH, Wire, Recurring, Cash Deposits), Counterparties, Checks, Transactions, Statements, Tax Forms, Fees, Rewards, Credit and Repayments, and Events delivered as signed HTTP webhooks. Unit publishes an official OpenAPI 3.0.2 specification (github.com/unit-finance/openapi-unit-sdk) plus generated Node.js, Python, Ruby, and Java SDKs. Sandbox runs at api.s.unit.sh; production access is provisioned per signed BaaS agreement with Unit's partner banks.
Unit publishes 17 API contracts indexed on the APIs.io network, including Accounts API, API Tokens API, Applications API, and 14 more. Tagged areas include Fintech, Banking as a Service, Banking, Payments, and Card Issuing.
The Unit catalog on APIs.io includes 1 event-driven AsyncAPI specification, 1 JSON-LD context, and 1 Spectral governance ruleset.
Unit’s developer surface includes support, authentication, documentation, engineering blog, API reference, getting-started guide, signup flow, and 53 more developer resources.
What this lets a business do 5
Business capabilities this provider's published APIs can perform, derived from its own contracts. Browse all capabilities →
Kin Score
Markets this provider is in provisional
The Kin Score Market layer reads a provider inside its market: its position, and how deep its integrations go. Depth is only comparable within a position. Provisional and unweighted: not part of the Kin Score or agent readiness.
| Market | Position | Depth | Registered MCP server | Declares compatibility |
|---|---|---|---|---|
| Payments | distribution | 28.8 | - | - |
| Consumer Lending Licensing (UK, US, Canada credit licence registers) | distribution | 28.8 | - | - |
Registered MCP server and declares compatibility are report only — not weighted. Undeclared means we found nothing we can read, so there is no number: we never infer integrations.
Standards implemented 3
Standards this provider implements or carries. De facto ones are profiled and measured by the API Commons; formal ones come from the standards directory and are linked by the provider's own tags. The evidence column says how each claim was established — not that it was made.
APIs 17
Individual APIs this provider publishes, each with its own machine-readable definition.
Unit Accounts API
Deposit and credit accounts.
Unit API Tokens API
Org-level and customer-level authentication tokens.
Unit Applications API
Individual and business application onboarding (KYC/KYB).
Unit Authorizations API
Completed card authorizations and real-time authorization requests.
Unit Cards API
Debit and credit card issuance and management.
Unit Checks API
Check deposits and outbound check payments.
Unit Counterparties API
External bank accounts and routing-number institution lookups.
Unit Credit and Repayments API
Repayments on credit accounts and receivables.
Unit Customers API
Customer profiles created from approved applications.
Unit Events API
Platform activity log.
Unit Fees and Rewards API
Ad hoc fees and cashback-style rewards.
Unit Payments API
Book, ACH, wire, recurring, and cash-deposit payments.
Unit Risk and Fraud API
Stop payments and card/ACH disputes.
Unit Statements API
Monthly account statements.
Unit Tax Forms API
Annual tax documents.
Unit Transactions API
Posted, immutable ledger entries.
Unit Webhooks API
Subscriptions that deliver events as signed HTTP callbacks.
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Postman Collections 16
Ready-to-run Postman collections for exercising this provider's APIs.
Unit Accounts API
POSTMANUnit Applications API
POSTMANUnit Card Authorizations API
POSTMANUnit Cards API
POSTMANUnit Checks API
POSTMANUnit Customers API
POSTMANUnit Disputes API
POSTMANUnit Fees and Rewards API
POSTMANUnit Payments API
POSTMANUnit Statements API
POSTMANUnit Stop Payments API
POSTMANUnit Tax Forms API
POSTMANUnit Transactions API
POSTMANUnit Webhooks and Events API
POSTMANScroll for all 16
Open Collections 35
Open, tool-agnostic API collections (OpenAPI-derived and Bruno).
Unit Accounts API
OPEN COLLECTIONUnit Accounts API
OPEN COLLECTIONUnit Accounts API Tokens API
OPEN COLLECTIONUnit Accounts Applications API
OPEN COLLECTIONUnit Applications API
OPEN COLLECTIONUnit Accounts Authorizations API
OPEN COLLECTIONUnit Card Authorizations API
OPEN COLLECTIONUnit Accounts Cards API
OPEN COLLECTIONUnit Cards API
OPEN COLLECTIONUnit Accounts Checks API
OPEN COLLECTIONUnit Checks API
OPEN COLLECTIONUnit Accounts Counterparties API
OPEN COLLECTIONUnit Accounts Credit and Repayments API
OPEN COLLECTIONUnit Credit and Repayments API
OPEN COLLECTIONUnit Accounts Customers API
OPEN COLLECTIONUnit Customers API
OPEN COLLECTIONUnit Disputes API
OPEN COLLECTIONUnit Accounts Events API
OPEN COLLECTIONUnit Accounts Fees and Rewards API
OPEN COLLECTIONUnit Fees and Rewards API
OPEN COLLECTIONUnit OpenAPI specifications
OPEN COLLECTIONUnit Accounts Payments API
OPEN COLLECTIONUnit Payments API
OPEN COLLECTIONUnit Accounts Risk and Fraud API
OPEN COLLECTIONUnit Sandbox and Reference API
OPEN COLLECTIONUnit Accounts Statements API
OPEN COLLECTIONUnit Statements API
OPEN COLLECTIONUnit Stop Payments API
OPEN COLLECTIONUnit Accounts Tax Forms API
OPEN COLLECTIONUnit Tax Forms API
OPEN COLLECTIONUnit Accounts Transactions API
OPEN COLLECTIONUnit Transactions API
OPEN COLLECTIONUnit Accounts Webhooks API
OPEN COLLECTIONUnit Webhooks and Events API
OPEN COLLECTIONUnit API
OPEN COLLECTIONScroll for all 35
Agent Skills 3
Packaged agent skills for driving this provider's APIs from an AI assistant.
issue-and-manage-debit-card
AGENT SKILLonboard-customer-and-open-deposit-account
AGENT SKILLoriginate-ach-payment
AGENT SKILLUnit API pricing
Rate limits
- API request rate: Our rate limit is based on your IP address and is set to 1,000 requests per minute.
- List page size: Limit the number of resources to be returned (between 1 and 1000). Defaults to 100 when no value is provided.
Pricing Plans 1
Published pricing tiers and plan structures.
Unit Plans Pricing
PLANSRate Limits 1
Documented rate limits and quota policies.
Unit Rate Limits
RATE LIMITSTerms of Service 1
What its API terms permit and prohibit, quoted from its own page.
Privacy & Data 1
Its role, the data it processes, retention and transfers, quoted from its own privacy page.
Deprecation Policy 1
Notice periods, support windows and the headers it sends, quoted from its own page.
Compliance 1
Attestations the provider states (SOC 2, ISO 27001 and others), quoted from its own trust page. APIs.io verifies none of them.
Eligibility 1
Who may sign up and where, quoted from its own terms.
AI Preferences 1
Its stance on AI training, inference and agents, quoted from its own pages.
Data License 1
How its data and outputs may be reused, quoted from its own terms.
FinOps 1
Cost, billing, and metering signals for API financial operations.
Unit Finops
FINOPSEvent Specifications 1
AsyncAPI definitions for this provider's event-driven and streaming APIs.
Unit Co Events Webhooks
ASYNCAPISemantic Vocabularies 1
JSON-LD contexts and semantic vocabularies used across these APIs.
Unit Co Context
JSON-LDSpectral Rules 1
Spectral governance rulesets for linting and validating these APIs. Counts are the severity each rule declares, not results of running them.
Unit API Rules
SPECTRALOpenAPI Overlays 1
Overlays applied on top of this provider's contracts. Each card says who wrote it: a document the provider publishes, or one API Evangelist derived or generated.
Unit Openapi Source Overlay
DERIVEDJSON Schema 5
Standalone JSON Schema definitions for this provider's data models.
CreateAccountRequest
JSON SCHEMACreateApplicationRequest
JSON SCHEMACreateCardRequest
JSON SCHEMACreatePaymentRequest
JSON SCHEMACreateWebhookRequest
JSON SCHEMASecurity Posture 4
Authentication, domain security, vulnerability disclosure, and trust-center signals.
Scopes 1
OAuth scopes governing access to this provider's APIs.
Agentic Access (API Evangelist recommendations) 1
Recommended x-agentic-access execution contracts for AI agents.
Resources
Get Started 4
Portal, sign-up, and the first successful call
Documentation 3
Reference material describing how the API behaves
Agent Surfaces 5
MCP servers, agent skills, and machine-readable catalogs
Design & Contract 11
Pagination, idempotency, versioning, errors, and events
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Build 6
SDKs, sample code, and the tooling you integrate with
Access & Security 8
Authentication, authorization, and security posture
Scroll for all 8
Operate 6
Status, limits, changes, and where to get help
Commercial 6
Pricing, plans, and the legal terms of use
Company 4
The organization behind the API
Other 7
Properties that don't map to a standard resource type
Scroll for all 7
Source (apis.yml)
Unit API — frequently asked questions
Does Unit have an API?
Yes. APIs.io lists 17 APIs from Unit, including Unit Accounts API, Unit API Tokens API and Unit Applications API, and 14 more.
Is there an OpenAPI specification for the Unit API?
Yes. APIs.io indexes 17 OpenAPI specifications for Unit, each linked for download from this page.
How do I authenticate with the Unit API?
Unit uses bearer-token authentication (http · 1 scheme). The details are profiled on APIs.io as Unit Authentication.
Is the Unit API ready for AI agents?
Unit has a Kin Score of 70.0 out of 100 (exemplar) and an Agent Readiness score of 33.1 (agent-ready), scored by API Evangelist on 2026-11-13.
Work with this as data
Every provider here is available over the APIs.io API and to AI agents over MCP.