Grain
Grain provides an embedded FX hedging solution for platforms and marketplaces, offering AI‑driven cross‑currency protection via a flexible API. It helps businesses eliminate foreign‑exchange risk, reduce hedging costs, and increase sales by guaranteeing rates and handling transactions in multiple currencies. Backed by Bain Capital Ventures, Grain serves travel, payment providers, marketplaces, and supply‑chain platforms.
Real signal across most facets with visible, nameable gaps — the contract exists but is thin, or the portal is good while governance and commercial terms are absent.
API Evangelist profiles Grain the way a machine reads it — 25 machine-readable artifacts across 1 API, 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 — Grain scores 45.2/100 (developing), with a separate agent-readiness read of 41/100 (agent ready). 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 2026-10-31 · rubric v0.25.0
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How we profile Grain
Each block below is one kind of artifact we hold for Grain. 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.
Grain Conversions API
Conversion objects represent currency conversions executed for immediate or near-term settlement.
Grain Customers API
Customer objects represent your end customers on the Grain platform. A customer must be created before a hedge or conversion can be initiated.
Grain Dual Hedges API
A dual hedge mitigates FX risk by automatically generating two linked hedge legs - a customer leg and a supplier leg - both routed through the customer's functional currency. Th...
Grain Grain API
The Grain API API from Grain — 0 operation(s) for grain api.
Grain Hedges API
Hedge objects represent transactions that lock exchange rates for future dates. A single hedge locks an exchange rate for a future transaction between two currencies.
Grain Payouts API
The Payouts API from Grain — 3 operation(s) for payouts.
Grain Pricing API
Pricing endpoints provide access to FX rates for currency pairs that are not being hedged. These endpoints can be used for live rate display or bulk retrieval to support high-vo...
Grain Vendors API
Vendor objects represent payees that payouts can be sent to. A vendor holds contact details and one or more payout methods — the bank accounts payouts are sent to.
Grain Wallets API
Endpoints to view balances, manage funding, and perform transfers.
Scroll within the panel for all 9 ·
Agent Skills 4
An agent skill packages the how-to for driving these APIs from an assistant — the prompts, the sequence, the guardrails — so the knowledge to use the API travels with it.
Packaged agent skills for driving this provider's APIs from an AI assistant.
grainfinance-co-conversion-workflow
AGENT SKILLgrainfinance-co-create-customer
AGENT SKILLgrainfinance-co-payout-review-and-submit
AGENT SKILLgrainfinance-co-withdraw-funds
AGENT SKILLEvent 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.
Grainfinance Co Webhooks
ASYNCAPISemantic 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.
Grainfinance Co Context
JSON-LDSpectral Rules 1
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.
Grain API Rules
SPECTRALJSON 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.
AcceptOfflineDualHedgeProposalRequestBody
JSON SCHEMAAcceptOfflineHedgeProposalRequestBody
JSON SCHEMACreatedCustomerHedgeProposalResponseBody
JSON SCHEMADrawdownProposalResponse
JSON SCHEMADrawdownResponse
JSON SCHEMAGetDualHedgeResponseBody
JSON SCHEMASecurity Posture 2
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 Grain — 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 1
Portal, sign-up, and the first successful call
Documentation 2
Reference material describing how the API behaves
Agent Surfaces 3
MCP servers, agent skills, and machine-readable catalogs
Design & Contract 7
Pagination, idempotency, versioning, errors, and events
Scroll within the panel for all 7 ·
Build 1
SDKs, sample code, and the tooling you integrate with
Access & Security 2
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 3
The organization behind the API
Other 3
Properties that don't map to a standard resource type
← All providers · Data indexed from github.com/api-evangelist/grainfinance-co · machine-readable index on apis.io
This is an independent, third-party profile of Grain, 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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