Flexa

Flexa is a digital-currency payments network that lets businesses accept crypto and other digital assets from customers anywhere, with instant authorization, fraud-resistant settlement, and automatic conversion into a preferred payout currency so merchants avoid price volatility. The Flexa Payments API is built around the "commerce intent" resource, which represents any attempt to collect a digital-currency payment and tracks requested debits against actual credits; supporting resources include assets, refunds, events, links, brands, and flexcodes. Flexa ships prebuilt mobile UI Components for iOS, Android, and React Native, plus in-person (Point of Sale) and online acceptance options, and a production-grade test mode that uses a valueless ERC-20 "Credit" (CR) token. Flexa is backed by Pantera Capital and supports 99+ digital assets across Ethereum, Bitcoin, Lightning, Solana, and more.

Flexa publishes 1 API on the APIs.io network. Tagged areas include Company, Crypto, Payments, Digital Currency, and Cryptocurrency.

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

Flexa’s developer surface includes documentation, API reference, getting-started guide, support, authentication, sandbox, and 23 more developer resources.

🌐 Visit website 📡 Source on GitHub
47.3/100 developing ▲ 5.7 Agent 75/100 agent native Full breakdown ↓
scored 2026-07-21 · rubric v0.4
1 APIs 1 MCP Servers 0 Features
CompanyCryptoPaymentsDigital CurrencyCryptocurrencyFintechBlockchainMerchant PaymentsWeb3

API Rating

API Evangelist API Evangelist Rating How this is scored →
scored 2026-07-21 · rubric v0.4
Composite quality — 47.3/100 · developing
Contract Quality 15.1 / 25
Developer Ergonomics 15.7 / 20
Commercial Clarity 4.2 / 20
Operational Transparency 3.1 / 13
Governance 0.0 / 12
Discoverability 9.3 / 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/flexa: open an issue to ask a question, or submit a pull request to add artifacts. Want it done for you? Prioritized profiling — $2,500 →

APIs

Flexa API

The Flexa API offers access to Flexa's instant, fraud-resistant platform for accepting digital-asset payments. Core resources are commerce intents, assets, refunds, and events. ...

MCP Servers

flexa-mcp.yml

MCP SERVER

Event Specifications

Flexa Events Webhooks

ASYNCAPI

Resources

Get Started 3

Portal, sign-up, and the first successful call

DeveloperPortal
DeveloperPortal
 GettingStarted
GettingStarted
 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

AgenticAccess
AgenticAccess
 LLMsTxt
LLMsTxt
 WellKnown
WellKnown
 MCPServer
MCPServer
 AgentSkill
AgentSkill

Design & Contract 7

Pagination, idempotency, versioning, errors, and events

ErrorCatalog
ErrorCatalog
 Conventions
Conventions
 Lifecycle
Lifecycle
 Conformance
Conformance
 DataModel
DataModel
 Webhooks
Webhooks
 Components
Components

Scroll for all 7

Build 3

SDKs, sample code, and the tooling you integrate with

GitHubOrganization
GitHubOrganization
 Packages
Packages
 SDKs
SDKs

Access & Security 4

Authentication, authorization, and security posture

Authentication
Authentication
 DomainSecurity
DomainSecurity
 VulnerabilityDisclosure
VulnerabilityDisclosure
 Security
Security

Operate 1

Status, limits, changes, and where to get help

Support
Support

Commercial 2

Pricing, plans, and the legal terms of use

TermsOfService
TermsOfService
 PrivacyPolicy
PrivacyPolicy

Company 1

The organization behind the API

Website
Website

Other 1

Properties that don't map to a standard resource type

Overlay
Overlay

Source (apis.yml)

apis.yml Raw ↑ 
aid: flexa
name: Flexa
description: Flexa is a digital-currency payments network that lets businesses accept crypto and other digital assets from
  customers anywhere, with instant authorization, fraud-resistant settlement, and automatic conversion into a preferred payout
  currency so merchants avoid price volatility. The Flexa Payments API is built around the "commerce intent" resource, which
  represents any attempt to collect a digital-currency payment and tracks requested debits against actual credits; supporting
  resources include assets, refunds, events, links, brands, and flexcodes. Flexa ships prebuilt mobile UI Components for iOS,
  Android, and React Native, plus in-person (Point of Sale) and online acceptance options, and a production-grade test mode
  that uses a valueless ERC-20 "Credit" (CR) token. Flexa is backed by Pantera Capital and supports 99+ digital assets across
  Ethereum, Bitcoin, Lightning, Solana, and more.
image: https://framerusercontent.com/assets/GHzfAvG7SahlNocEC2Agsubvp0.png
url: https://raw.githubusercontent.com/api-evangelist/flexa/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: '2026-07-19'
tags:
- Company
- Crypto
- Payments
- Digital Currency
- Cryptocurrency
- Fintech
- Blockchain
- Merchant Payments
- Web3
apis:
- name: Flexa API
  description: The Flexa API offers access to Flexa's instant, fraud-resistant platform for accepting digital-asset payments.
    Core resources are commerce intents, assets, refunds, and events. Requests are authenticated with API keys via HTTP Basic
    Authentication; errors are returned as RFC 7807 problem details.
  humanURL: https://docs.flexa.co/introduction
  baseURL: https://api.flexa.co
  tags:
  - Payments
  - Crypto
  - Digital Currency
  properties:
  - type: OpenAPI
    url: openapi/flexa-openapi.json
  - type: Documentation
    url: https://docs.flexa.co/introduction
  - type: APIReference
    url: https://docs.flexa.co/api-reference/introduction
  - type: GettingStarted
    url: https://docs.flexa.co/payments/getting-started
  - type: Authentication
    url: authentication/flexa-authentication.yml
  - type: Sandbox
    url: sandbox/flexa-sandbox.yml
  - type: ErrorCatalog
    url: errors/flexa-problem-types.yml
  - type: Conventions
    url: conventions/flexa-conventions.yml
  - type: DataModel
    url: data-model/flexa-data-model.yml
  - type: Overlay
    url: overlays/flexa-openapi-overlay.yaml
  - type: MCPServer
    url: mcp/flexa-mcp.yml
  - type: Webhooks
    url: asyncapi/flexa-events-webhooks.yml
  - type: Conformance
    url: conformance/flexa-conformance.yml
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: AgenticAccess
  url: agentic-access/flexa-agentic-access.yml
- type: Website
  url: https://flexa.co/
- type: DeveloperPortal
  url: https://docs.flexa.co/introduction
- type: Documentation
  url: https://docs.flexa.co/introduction
- type: APIReference
  url: https://docs.flexa.co/api-reference/introduction
- type: GettingStarted
  url: https://docs.flexa.co/payments/getting-started
- type: Support
  url: https://support.flexa.co/en/
- type: TermsOfService
  url: https://flexa.co/legal/terms
- type: PrivacyPolicy
  url: https://flexa.co/legal/privacy
- type: GitHubOrganization
  url: https://github.com/flexa
- type: LLMsTxt
  url: llms/flexa-llms.txt
- type: Packages
  url: packages/flexa-packages.yml
- type: SDKs
  url: packages/flexa-packages.yml
- type: Authentication
  url: authentication/flexa-authentication.yml
- type: Sandbox
  url: sandbox/flexa-sandbox.yml
- type: WellKnown
  url: well-known/flexa-well-known.yml
- type: DomainSecurity
  url: security/flexa-domain-security.yml
- type: VulnerabilityDisclosure
  url: security/flexa-vulnerability-disclosure.yml
- type: Security
  url: https://flexa.co/security/bug-bounty-program
- type: ErrorCatalog
  url: errors/flexa-problem-types.yml
- type: Conventions
  url: conventions/flexa-conventions.yml
- type: Lifecycle
  url: lifecycle/flexa-lifecycle.yml
- type: Conformance
  url: conformance/flexa-conformance.yml
- type: DataModel
  url: data-model/flexa-data-model.yml
- type: Overlay
  url: overlays/flexa-openapi-overlay.yaml
- type: MCPServer
  url: mcp/flexa-mcp.yml
- type: Webhooks
  url: asyncapi/flexa-events-webhooks.yml
- type: Components
  url: components/flexa-components.yml
- type: AgentSkill
  url: skills/_index.yml
x-enrichment:
  date: '2026-07-19'
  status: backfilled
  pass: local-v1
  note: backfilled from .gitignore signal + verified work evidence