Rainforest
Rainforest is a payfac-as-a-service (payment-facilitator-as-a-service) provider that lets vertical SaaS platforms embed payments and monetize them as revenue. Platforms integrate via embeddable, PCI-scope-reducing Components (loaded from a JavaScript bundle and configured in Component Studio) or a direct server-to-server REST API, and Rainforest handles merchant onboarding (KYC/KYB), card and ACH processing, payouts/deposits, chargebacks, disputes, and PCI compliance. The API is organized into Authentication/API keys, Merchants and merchant applications, Payments (payins, payment methods, refunds, chargebacks, ACH returns, devices), Deposits, File Uploads, Forward Requests, and Health, versioned by date (current 2024-10-16) and secured with HTTP Bearer API keys plus short-lived Component session tokens. Rainforest is PCI DSS Level 1 certified and hosted on AWS. Backed by Accel, Matrix Partners, and Y Combinator.
Solid contracts, transparent operations, and an easy start — typically complete on four or five facets with one clear soft spot.
API Evangelist profiles Rainforest the way a machine reads it — 77 machine-readable artifacts across 7 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 — Rainforest scores 58.0/100 (strong), with a separate agent-readiness read of 42/100 (agent native). 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. Every facet and dimension name is a link: it opens that measurement's page on APIs.io, where the rating runs across the whole catalog — the exact checks that feed it, how every profiled provider distributes on it, and who is at the top of it.
Kin Score
How this is scored →scored 2026-09-08 · rubric v0.20.0
Put this on your own site. The badge is drawn live from Rainforest's current Kin Score — paste it once and it updates itself every time the score is recomputed. It follows your visitor's light or dark setting, and it links back here so anyone who sees it can read the full breakdown.
<!-- Kin Score · API Evangelist -->
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title="Rainforest on API Evangelist — API profile and Kin Score">
<img src="https://apis.io/badge/rainforest.svg"
alt="Rainforest Kin Score — API readiness rating by API Evangelist" width="150" height="150" loading="lazy">
</a>[](https://providers.apievangelist.com/providers/rainforest/)<!-- Kin Score · API Evangelist -->
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title="Rainforest on API Evangelist — API profile and Kin Score">
<img src="https://apis.io/badge/rainforest/card.svg"
alt="Rainforest Kin Score — API readiness rating by API Evangelist" width="340" height="120" loading="lazy">
</a>More shapes, themes and sizes → · Score as JSON · How badges work
How we profile Rainforest
Each block below is one kind of artifact we hold for Rainforest. 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 23
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.
Rainforest ACH Returns API
Resources for ACH return functions.
Rainforest API Keys API
Resources for api key functions.
Rainforest Billing Profiles API
Resources for billing profile functions.
Rainforest BIN Lookups API
Resources for BIN lookup functions.
Rainforest Chargebacks API
Resources for chargeback functions.
Rainforest Deposit Method Configs API
Resources for deposit method config functions.
Rainforest Deposit Methods API
Resources for deposit method functions.
Rainforest Deposits API
Resources for deposit functions.
Rainforest Devices API
Resources for device functions.
Rainforest File Upload Configs API
Resources for file upload config functions.
Rainforest File Uploads API
Resources for file upload functions.
Rainforest Forward Requests API
Resources for forwarding sensitive data to 3rd parties.
Rainforest Health API
Resources for health functions.
Rainforest Merchant Applications API
Resources for merchant application functions.
Rainforest Merchants API
Resources for merchant functions.
Rainforest Payin Configs API
Resources for payin configs functions.
Rainforest Payins API
Resources for payin functions.
Rainforest Payment Method Configs API
Resources for payment method configs functions.
Rainforest Payment Method Domains API
Resources for payment method domain functions.
Rainforest Payment Methods API
Resources for payment method functions.
Rainforest Payments API
Resources for payment functions.
Rainforest Refunds API
Resources for refund functions.
Rainforest Sessions API
Resources for session functions.
Scroll within the panel for all 23 ·
Postman Collections 23
A runnable collection turns the contract into something a developer can execute in seconds. We profile them because the fastest way to trust an API is to make a real call against it.
Ready-to-run Postman collections for exercising this provider's APIs.
Scroll within the panel for all 23 ·
Open Collections 24
Open, tool-agnostic collections carry the same runnable value as Postman without locking you to one client — the portable, forkable form of the same exercise.
Open, tool-agnostic API collections (OpenAPI-derived and Bruno).
API Collection
OPEN COLLECTIONAuthentication ACH Returns API
OPEN COLLECTIONAuthentication ACH Returns API Keys API
OPEN COLLECTIONAuthentication ACH Returns Billing Profiles API
OPEN COLLECTIONAuthentication ACH Returns BIN Lookups API
OPEN COLLECTIONAuthentication ACH Returns Chargebacks API
OPEN COLLECTIONAuthentication ACH Returns Deposit Method Configs API
OPEN COLLECTIONAuthentication ACH Returns Deposit Methods API
OPEN COLLECTIONAuthentication ACH Returns Deposits API
OPEN COLLECTIONAuthentication ACH Returns Devices API
OPEN COLLECTIONAuthentication ACH Returns File Upload Configs API
OPEN COLLECTIONAuthentication ACH Returns File Uploads API
OPEN COLLECTIONAuthentication ACH Returns Forward Requests API
OPEN COLLECTIONAuthentication ACH Returns Health API
OPEN COLLECTIONAuthentication ACH Returns Merchant Applications API
OPEN COLLECTIONAuthentication ACH Returns Merchants API
OPEN COLLECTIONAuthentication ACH Returns Payin Configs API
OPEN COLLECTIONAuthentication ACH Returns Payins API
OPEN COLLECTIONAuthentication ACH Returns Payment Method Configs API
OPEN COLLECTIONAuthentication ACH Returns Payment Method Domains API
OPEN COLLECTIONAuthentication ACH Returns Payment Methods API
OPEN COLLECTIONAuthentication ACH Returns Payments API
OPEN COLLECTIONAuthentication ACH Returns Refunds API
OPEN COLLECTIONAuthentication ACH Returns Sessions API
OPEN COLLECTIONScroll within the panel for all 24 ·
Arazzo Workflows 2
Real integrations are rarely a single call. Arazzo describes the multi-step sequences — auth, then create, then confirm — so both a human and an agent can follow the choreography, not just the endpoints.
Multi-step API workflows described with the Arazzo specification.
Rainforest — configure and process a payin
Create a payin config with an idempotency key, process the payin, and confirm its status.
ARAZZORainforest — onboard a merchant
Create a merchant, submit its application, and confirm it reaches ACTIVE.
ARAZZOEvent Specifications 1
Not every API is request/response. AsyncAPI describes the event-driven and streaming side — the webhooks and channels — so the asynchronous half of the interface is documented the same way the synchronous half is.
AsyncAPI definitions for this provider's event-driven and streaming APIs.
Rainforest Webhooks
ASYNCAPISecurity Posture 3
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.
Agentic Access 1
An x-agentic-access contract marks which operations are safe for an agent to run on its own and which need a human in the loop. It is the difference between an API an agent can use and one it can use safely.
Recommended x-agentic-access execution contracts for AI agents.
Resources
Every other property we hold for Rainforest — 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 4
Portal, sign-up, and the first successful call
Documentation 2
Reference material describing how the API behaves
Agent Surfaces 4
MCP servers, agent skills, and machine-readable catalogs
Design & Contract 10
Pagination, idempotency, versioning, errors, and events
Scroll within the panel for all 10 ·
Build 5
SDKs, sample code, and the tooling you integrate with
Access & Security 4
Authentication, authorization, and security posture
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
Other 2
Properties that don't map to a standard resource type
← All providers · Data indexed from github.com/api-evangelist/rainforest · machine-readable index on apis.io
This is an independent, third-party profile of Rainforest, published by API Evangelist. We do not operate, host, resell, or support these APIs, and we are not affiliated with or endorsed by the company unless stated above. Everything here is built from publicly available information — the company's own site, developer portal, documentation, public repositories, and the specifications it publishes for public use. Nothing is obtained by breaching a system, defeating an access control, or using credentials.
The Kin Score and Agent Readiness rating are independently calculated assessments of a company's public API artifacts, scored against a published rubric. They are not certifications, endorsements, security assessments, or audits.
Corrections, re-scores, and removal are free — no partnership or purchase required, and you do not need to justify the request. A removed company is recorded as unrated, never scored zero for having asked. Acknowledgement within one business day; removal within two.
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