Coinme

Coinme is a Seattle-based regulated cryptocurrency company that offers Crypto-as-a-Service (CaaS): modular API infrastructure that lets platforms embed crypto without building it from scratch. Its Crypto-as-a-Service API covers KYC/AML customer and business onboarding, executable and informational buy/sell quotes, buy/sell and sell-all transactions, custodial and external-wallet sends, crypto asset balances, cash on/off-ramp via barcode order templates at physical locations, transaction history and limits, supported chains, and location licensing. It ships an embeddable Widget, a PCI-scope-reducing Vault SDK for secure card capture, and a Risk Engine SDK for real-time fraud signals, plus HMAC-signed webhook notifications. Coinme is backed by Pantera Capital.

Coinme publishes 1 API on the APIs.io network: Crypto-as-a-Service API. Tagged areas include Company, Crypto, Cryptocurrency, Payments, and Bitcoin.

The Coinme catalog on APIs.io includes 1 event-driven AsyncAPI specification.

Coinme’s developer surface includes documentation, API reference, getting-started guide, engineering blog, support, pricing, signup flow, and 25 more developer resources.

🌐 Visit website 📡 Source on GitHub

53.5/100 developing Agent 75/100 agent native Full breakdown ↓
scored 2026-07-21 · rubric v0.4

1 APIs 1 MCP Servers 0 Features

CompanyCryptoCryptocurrencyPaymentsBitcoinWalletKYCOnboardingFintechCrypto-as-a-ServiceOn-RampOff-Ramp

API Rating

API Evangelist Rating How this is scored →
scored 2026-07-21 · rubric v0.4

Composite quality — 53.5/100 · developing

Contract Quality 15.1 / 25

Developer Ergonomics 16.1 / 20

Commercial Clarity 10.5 / 20

Operational Transparency 3.1 / 13

Governance 0.0 / 12

Discoverability 8.8 / 10

Agent readiness — 75/100 · agent native

Machine-Readable Contract 18 / 18

Agentic Access Contract 15 / 15

MCP Server 12 / 12

Machine-Readable Auth 10 / 10

Idempotency 0 / 9

Stable Error Semantics 8 / 8

Request/Response Examples 0 / 7

Rate-Limit Signaling 0 / 7

Typed Event Surface 6 / 6

Agent Skills 5 / 5

Well-Known Catalog 4 / 4

Consent & Bot Identity 0 / 3

Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. This rating is computed from github.com/api-evangelist/coinme: open an issue to ask a question, or submit a pull request to add artifacts. Want it done for you? Prioritized profiling — $2,500 →

Get Started 5

Portal, sign-up, and the first successful call

DeveloperPortal

DeveloperPortal

GettingStarted

GettingStarted

SignUp

SignUp

Login

Sandbox

Sandbox

Documentation 2

Reference material describing how the API behaves

Documentation

Documentation

APIReference

APIReference

Agent Surfaces 5

MCP servers, agent skills, and machine-readable catalogs

WellKnown

MCPServer

AgentSkill

AgenticAccess

LLMsTxt

Design & Contract 7

Pagination, idempotency, versioning, errors, and events

Conventions

ErrorCatalog

Lifecycle

Webhooks

Components

DataModel

Conformance

Scroll for all 7

Build 2

SDKs, sample code, and the tooling you integrate with

Packages

Packages

SDKs

SDKs

Access & Security 4

Authentication, authorization, and security posture

Authentication

OAuthScopes

Compliance

DomainSecurity

Operate 2

Status, limits, changes, and where to get help

Support

Support

StatusPage

StatusPage

Commercial 3

Pricing, plans, and the legal terms of use

Pricing

Pricing

TermsOfService

TermsOfService

PrivacyPolicy

PrivacyPolicy

Company 2

The organization behind the API

Website

Website

Blog

Blog

Source (apis.yml)

aid: coinme
name: Coinme
description: 'Coinme is a Seattle-based regulated cryptocurrency company that offers Crypto-as-a-Service (CaaS): modular API
  infrastructure that lets platforms embed crypto without building it from scratch. Its Crypto-as-a-Service API covers KYC/AML
  customer and business onboarding, executable and informational buy/sell quotes, buy/sell and sell-all transactions, custodial
  and external-wallet sends, crypto asset balances, cash on/off-ramp via barcode order templates at physical locations, transaction
  history and limits, supported chains, and location licensing. It ships an embeddable Widget, a PCI-scope-reducing Vault
  SDK for secure card capture, and a Risk Engine SDK for real-time fraud signals, plus HMAC-signed webhook notifications.
  Coinme is backed by Pantera Capital.'
url: https://raw.githubusercontent.com/api-evangelist/coinme/refs/heads/main/apis.yml
x-type: company
x-source: vc-portfolio
x-backed-by:
- pantera-capital
x-tier: stub
x-tier-reason: portfolio-lead
specificationVersion: '0.20'
created: '2026-07-17'
modified: '2026-07-18'
tags:
- Company
- Crypto
- Cryptocurrency
- Payments
- Bitcoin
- Wallet
- KYC
- Onboarding
- Fintech
- Crypto-as-a-Service
- On-Ramp
- Off-Ramp
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
apis:
- name: Coinme Crypto-as-a-Service API
  description: 'Partner API for embedding crypto: KYC onboarding, quotes, buy/sell transactions, wallets and sends, cash on/off-ramp
    order templates, balances, transaction history and limits, and webhooks.'
  humanURL: https://docs.coinme.com/
  baseURL: https://caas.coinme.com/services
  properties:
  - type: OpenAPI
    url: openapi/coinme-caas-openapi.json
  - type: Documentation
    url: https://docs.coinme.com/
  - type: APIReference
    url: https://docs.coinme.com/reference/initiate-authorize
  - type: GettingStarted
    url: https://docs.coinme.com/docs/getting-started
  - type: Overlay
    url: overlays/coinme-caas-overlay.yaml
  - type: Webhooks
    url: asyncapi/coinme-webhooks.yml
  - type: Arazzo
    name: Onboard a customer and buy crypto
    url: arazzo/coinme-onboard-and-buy.yml
common:
- type: Website
  url: https://coinme.com/
- type: DeveloperPortal
  url: https://docs.coinme.com/
- type: Documentation
  url: https://docs.coinme.com/
- type: APIReference
  url: https://docs.coinme.com/reference/initiate-authorize
- type: GettingStarted
  url: https://docs.coinme.com/docs/getting-started
- type: Blog
  url: https://coinme.com/blog/
- type: Support
  url: https://help.coinme.com/
- type: Pricing
  url: https://help.coinme.com/en/articles/10707822-coinme-pricing-fees
- type: SignUp
  url: https://account.coinme.com/login
- type: Login
  url: https://auth.coinme.com/oauth/account/login
- type: TermsOfService
  url: https://help.coinme.com/en/articles/9039676-terms-of-service
- type: PrivacyPolicy
  url: https://help.coinme.com/en/articles/9039704-privacy-policy
- type: StatusPage
  url: https://status.coinme.com/
- type: Authentication
  url: authentication/coinme-authentication.yml
- type: OAuthScopes
  url: scopes/coinme-scopes.yml
- type: Conventions
  url: conventions/coinme-conventions.yml
- type: ErrorCatalog
  url: errors/coinme-problem-types.yml
- type: Lifecycle
  url: lifecycle/coinme-lifecycle.yml
- type: Webhooks
  url: asyncapi/coinme-webhooks.yml
- type: Packages
  url: packages/coinme-packages.yml
- type: SDKs
  url: packages/coinme-packages.yml
- type: Components
  url: components/coinme-components.yml
- type: DataModel
  url: data-model/coinme-data-model.yml
- type: Sandbox
  url: sandbox/coinme-sandbox.yml
- type: Conformance
  url: conformance/coinme-conformance.yml
- type: Compliance
  url: https://help.coinme.com/en/articles/9039706-licensing
- type: WellKnown
  url: well-known/coinme-well-known.yml
- type: MCPServer
  url: mcp/coinme-mcp.yml
- type: AgentSkill
  url: skills/_index.yml
- type: AgenticAccess
  url: agentic-access/coinme-agentic-access.yml
- type: DomainSecurity
  url: security/coinme-domain-security.yml
- type: LLMsTxt
  url: llms/coinme-llms.txt
x-enrichment:
  date: '2026-07-19'
  status: backfilled
  pass: local-v1
  note: backfilled from .gitignore signal + verified work evidence

Coinme

API Rating

APIs

Coinme Crypto-as-a-Service API

MCP Servers

coinme-mcp.yml

Arazzo Workflows

_Index

Coinme — onboard a customer and buy crypto

Event Specifications

Coinme Webhooks

Resources