Slash
Slash is a business banking and finance platform for modern companies — startups, agencies, e-commerce sellers, and enterprises — combining business checking, unlimited virtual and physical corporate cards, ACH/wire and real-time payments, global USD accounts, stablecoin on/off ramps, treasury, invoicing, expense management, and reporting on one platform. Founded in 2021 and valued at $1.4B after a 2026 Series C led by Ribbit Capital, Slash exposes a REST API (currently in Beta) covering accounts, virtual accounts, cards and card groups, transactions, transfers, invoices, contacts and customers, expense reports, webhooks, and FDX-compliant financial data access — plus an official hosted MCP server, Agent Requests with human-in-the-loop approval, and Python and Node.js SDKs for AI-agent and programmatic integration.
Slash publishes 26 APIs on the APIs.io network, including Account API, Agent Requests API, Analytics API, and 23 more. Tagged areas include Company, Banking, Payments, Financial Services, and Fintech.
The Slash catalog on APIs.io includes 1 event-driven AsyncAPI specification.
Slash’s developer surface includes documentation, API reference, getting-started guide, changelog, engineering blog, support, pricing, and 29 more developer resources.
Kin Score
APIs 26
Individual APIs this provider publishes, each with its own machine-readable definition.
Slash Account API
The Account API from Slash — 4 operation(s) for account.
Slash Agent Requests API
The Agent Requests API from Slash — 2 operation(s) for agent requests.
Slash Analytics API
The Analytics API from Slash — 1 operation(s) for analytics.
Slash Card API
The Card API from Slash — 5 operation(s) for card.
Slash Card Group API
The Card Group API from Slash — 4 operation(s) for card group.
Slash Card Product API
The Card Product API from Slash — 1 operation(s) for card product.
Slash Contact API
The Contact API from Slash — 3 operation(s) for contact.
Slash Crypto API
The Crypto API from Slash — 1 operation(s) for crypto.
Slash Customer API
The Customer API from Slash — 3 operation(s) for customer.
Slash Developer Account API
The Developer Account API from Slash — 1 operation(s) for developer account.
Slash Developer Application API
The Developer Application API from Slash — 2 operation(s) for developer application.
Slash Expense Report API
The Expense Report API from Slash — 7 operation(s) for expense report.
Slash Fdx API
The Fdx API from Slash — 8 operation(s) for fdx.
Slash Invoice API
The Invoice API from Slash — 13 operation(s) for invoice.
Slash Legal Entity API
The Legal Entity API from Slash — 1 operation(s) for legal entity.
Slash Merchant API
The Merchant API from Slash — 2 operation(s) for merchant.
Slash Merchant Category API
The Merchant Category API from Slash — 1 operation(s) for merchant category.
Slash Oauth2 API
The Oauth2 API from Slash — 2 operation(s) for oauth2.
Slash Task API
The Task API from Slash — 4 operation(s) for task.
Slash Tokens API
The Tokens API from Slash — 1 operation(s) for tokens.
Slash Transaction API
The Transaction API from Slash — 5 operation(s) for transaction.
Slash Transfer API
The Transfer API from Slash — 1 operation(s) for transfer.
Slash Transfers API
The Transfers API from Slash — 1 operation(s) for transfers.
Slash Virtual Account API
The Virtual Account API from Slash — 2 operation(s) for virtual account.
Slash Webhook API
The Webhook API from Slash — 2 operation(s) for webhook.
Slash .well Known API
The .well Known API from Slash — 1 operation(s) for .well known.
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MCP Servers 1
Model Context Protocol servers that expose these APIs to AI agents.
slash-mcp.yml
MCP SERVEREvent Specifications 1
AsyncAPI definitions for this provider's event-driven and streaming APIs.
Slash Webhooks
ASYNCAPISecurity Posture 3
Authentication, domain security, vulnerability disclosure, and trust-center signals.
Scopes 1
OAuth scopes governing access to this provider's APIs.
Agentic Access 1
Recommended x-agentic-access execution contracts for AI agents.
Resources
Get Started 4
Portal, sign-up, and the first successful call
Documentation 2
Reference material describing how the API behaves
Agent Surfaces 5
MCP servers, agent skills, and machine-readable catalogs
Design & Contract 7
Pagination, idempotency, versioning, errors, and events
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Build 3
SDKs, sample code, and the tooling you integrate with
Access & Security 7
Authentication, authorization, and security posture
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Operate 3
Status, limits, changes, and where to get help
Commercial 3
Pricing, plans, and the legal terms of use
Company 2
The organization behind the API