Voltage

Voltage is Bitcoin and Lightning Network money infrastructure that lets financial platforms send and receive instant, permissionless payments at scale. Its Payments API (voltageapi.com/v1) exposes wallets, payments, quotes, and lines of credit for BTC and USD settlement, backed either by a Voltage-managed line of credit or your own Lightning node. Voltage also runs managed Lightning node infrastructure (LND, Core Lightning, BTCPay Server) with macaroon-based access, webhooks for real-time payment events, a Mutinynet staging sandbox, and built-in OFAC/compliance risk screening via Amboss Reflex. The platform is SOC 2 Type II and NMLS compliant.

Voltage is listed with 1 API on the APIs.io network. Tagged areas include Company, Enterprise, Bitcoin, Lightning Network, and Payments.

The Voltage catalog on APIs.io includes 2 event-driven AsyncAPI specifications.

Voltage’s developer surface includes documentation, API reference, getting-started guide, support, engineering blog, pricing, signup flow, and 31 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

53.6/100 developing ▬ flat Agent 27/100 agent aware Front door AI 1/6 silent Heartbeat 100/100 alive saas Full breakdown ↓
scored 2026-11-06 · rubric v0.27.0 · Show this score on your site →

AccessEnterprise

1 API 3 Agent Skills

Company Enterprise Bitcoin Lightning Network Payments Cryptocurrency Financial Services Wallets Infrastructure FintechNode HostingWeb3

Kin Score

Kin Score How this is scored →
scored 2026-11-06 · rubric v0.27.0

Composite quality — 53.6/100 · developing

Contract Quality 8.3 / 21

Developer Ergonomics 13.7 / 17

Access Clarity 8.9 / 17

Operational Transparency 4.9 / 11

Contract Governance 1.9 / 10

Discoverability 6.2 / 9

Regulatory Posture 4.8 / 15

Agent readiness — 27/100 · agent aware

Machine-Readable Contract 18 / 18

Agentic Access Contract 0 / 10

Documented Reversibility 0 / 6

MCP Server 0 / 12

Machine-Readable Auth 10 / 10

Idempotency 9 / 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 0 / 4

Consent & Bot Identity 0 / 3

A2A Agent Card 0 / 8

Dry-Run / Simulate Mode 0 / 4

Delegated User Identity 0 / 6

Protected Resource Metadata 0 / 5

Registration Without a Human 0 / 6

Agentic Commerce Well-Known Document 0 / 5

Pagination 5 / 5

Distinct Operations 3 / 3

MCP Tool Quality 6 / 6

Regulatory Posture applies to this provider. Its tags matched the Payments regime, so Regulatory Posture carries 15 points of the composite. If this regime is wrong for your business, say so on your provider repo — the applicability map is public and we will correct it.

Create-or-Update Ergonomics could not be measured. We hold no machine-readable contract for this provider to read, so there is nothing to measure a write surface against. Excluded rather than scored zero: never-measured and measured-empty are different facts. Publishing an OpenAPI is what makes this facet — and several others — scorable at all.

The six quality facets above are damped to 85 points between them, because the conditional facet above carries the other 15. That is why each facet's contribution is shown against a damped maximum: raising a quality facet moves the composite by 85% of its nominal weight, not 100%. The full arithmetic is at apis.io/rating/.

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Agent readiness — checks not met, largest first (exact, from this profile):

MCP Server +12 pts — deployment.mode + probe verdict on the mcp/ manifest, not the pointer; an unprobed slug falls back to authorship
Agentic Access Contract +10 pts — agentic_access artifact present (x-agentic-access), graded by author
A2A Agent Card +8 pts — a2a/-a2a.yml manifest, graded on conformance.grade against A2A 1.0.0
Rate-Limit Signaling +7 pts — OpenAPI responses document X-RateLimit-* / RateLimit headers (verified), else a rate_limits artifact or RateLimits link (documented)
Request/Response Examples +7 pts — share of operations carrying request/response examples; else an Examples / Code Samples link
Registration Without a Human +6 pts — a `registration_endpoint` in the served RFC 8414 / OIDC discovery document

7 more unmet checks in the Agent Readiness table above.

Kin Score — facets with the most composite points still available (weight × headroom):

Contract Quality scores 39.0 — up to +15.3 composite points
Contract Governance scores 18.2 — up to +9.8 composite points
Access Clarity scores 52.6 — up to +9.5 composite points

Each check links to what satisfies it. Publish the artifact, or tell us where it already lives, and the score moves on the next scoring run.

Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. Every facet and dimension name above is a link: it opens that measurement's own page — what it means, the exact checks that feed it, how the whole catalog distributes on it, and the providers at the top of it. This rating is computed from the provider profile at artifacts.apis.io/voltage/apis.yml: open an issue on github.com/api-evangelist/voltage to ask a question or point us at an artifact you publish. Submit an artifact on GitHub — free → Manage your own listing — the Influence plan, $499/mo →

APIs 1

Individual APIs this provider publishes, each with its own machine-readable definition.

Voltage Payments API

REST API for sending and receiving Bitcoin/Lightning payments. Manage wallets, create send/receive payments (BOLT11, on-chain, BIP21), lock BTC/USD exchange rates with quotes, v...

Agent Skills 3

Packaged agent skills for driving this provider's APIs from an AI assistant.

Subscribe to Voltage payment webhooks

AGENT SKILL

Receive a Lightning payment with Voltage

AGENT SKILL

Send a Lightning payment with Voltage

AGENT SKILL

Voltage API pricing

Pricing Plans 1

Published pricing tiers and plan structures.

Voltage Plans Pricing

0 plans

PLANS

Service Levels 1

Uptime the provider promises or reports, as SLA4OAI. Read from its own pages; APIs.io runs no monitors.

Voltage

SLA

FinOps 1

Cost, billing, and metering signals for API financial operations.

Voltage Finops

FINOPS

Event Specifications 2

AsyncAPI definitions for this provider's event-driven and streaming APIs.

Voltage Payments Webhooks

AsyncAPI description of the Voltage Payments webhook event surface, generated by the API Evangelist enrichment pipeline from the public webhooks documentation (https://docs.volt...

ASYNCAPI

Voltage Payments Webhooks

ASYNCAPI

Security Posture 3

Authentication, domain security, vulnerability disclosure, and trust-center signals.

Voltage Authentication

apiKey · 2 schemes

SECURITY

Voltage Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Voltage Vulnerability Disclosure

security.txt · contact published

SECURITY

Resources

Get Started 4

Portal, sign-up, and the first successful call

DeveloperPortal

GettingStarted

SignUp

Sandbox

Documentation 3

Reference material describing how the API behaves

Documentation

Documentation

APIReference

APIReference

AsyncAPI

AsyncAPI

Agent Surfaces 4

MCP servers, agent skills, and machine-readable catalogs

LLMsTxt

LLMsTxt

X-MCPServerCandidate

X-MCPServerCandidate

WellKnown

WellKnown

AgentSkill

AgentSkill

Design & Contract 7

Pagination, idempotency, versioning, errors, and events

Conventions

Idempotency

Lifecycle

Webhooks

ErrorCatalog

Conformance

DataModel

Scroll for all 7

Build 4

SDKs, sample code, and the tooling you integrate with

GitHubOrganization

CLI

Packages

SDKs

Access & Security 6

Authentication, authorization, and security posture

VulnerabilityDisclosure

VulnerabilityDisclosure

Security

DomainSecurity

Authentication

Compliance

SecurityTxt

Operate 4

Status, limits, changes, and where to get help

Support

StatusPage

ChangeLog

ChangeLog

Commercial 4

Pricing, plans, and the legal terms of use

Plans

Pricing

TermsOfService

PrivacyPolicy

Company 2

The organization behind the API

Website

Website

Blog

Blog

Source (apis.yml)

aid: voltage
name: Voltage
description: Voltage is Bitcoin and Lightning Network money infrastructure that lets financial platforms send and receive
  instant, permissionless payments at scale. Its Payments API (voltageapi.com/v1) exposes wallets, payments, quotes, and lines
  of credit for BTC and USD settlement, backed either by a Voltage-managed line of credit or your own Lightning node. Voltage
  also runs managed Lightning node infrastructure (LND, Core Lightning, BTCPay Server) with macaroon-based access, webhooks
  for real-time payment events, a Mutinynet staging sandbox, and built-in OFAC/compliance risk screening via Amboss Reflex.
  The platform is SOC 2 Type II and NMLS compliant.
deliveryModel:
  model: saas
  open_source: false
  commercial: true
  callable_host: false
  label: Hosted service · you call their endpoint
  confidence: medium
  source:
  - pricing
  generated: '2026-08-28'
  method: derived
accessModel:
  pricing: enterprise
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Enterprise
  confidence: medium
  source:
  - authentication
  - security
  - sandbox
  generated: '2026-11-06'
  method: derived
image: https://github.com/voltagecloud.png
url: https://raw.githubusercontent.com/api-evangelist/voltage/refs/heads/main/apis.yml
x-type: company
x-source: vc-portfolio
x-backed-by:
- gv
x-tier: stub
x-tier-reason: portfolio-lead
specificationVersion: '0.23'
created: '2026-07-17'
modified: '2026-07-21'
x-enrichment:
  date: '2026-07-21'
  status: enriched
  artifacts_added: 22
  pass: local-v1
tags:
- Company
- Enterprise
- Bitcoin
- Lightning Network
- Payments
- Cryptocurrency
- Financial Services
- Wallets
- Infrastructure
- Fintech
- Node Hosting
- Web3
tags_raw:
- Company
- Enterprise
- Bitcoin
- Lightning Network
- Payments
- Cryptocurrency
- Financial Services
- Wallets
- Infrastructure
- Fintech
- Node Hosting
- Web3
- Financial-Services
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
apis:
- name: Voltage Payments API
  description: REST API for sending and receiving Bitcoin/Lightning payments. Manage wallets, create send/receive payments
    (BOLT11, on-chain, BIP21), lock BTC/USD exchange rates with quotes, view lines of credit, and subscribe to webhooks for
    payment lifecycle events. Authenticated with an environment-scoped x-api-key.
  humanURL: https://docs.voltageapi.com
  baseURL: https://voltageapi.com/v1
  tags:
  - Payments
  - Bitcoin
  - Lightning Network
  - Wallets
  properties:
  - type: Documentation
    url: https://docs.voltageapi.com
  - type: APIReference
    url: https://voltageapi.com/v1/docs
  - type: GettingStarted
    url: https://docs.voltageapi.com/developer-guide
common:
- type: Plans
  url: plans/voltage-plans-pricing.yml
- type: VulnerabilityDisclosure
  url: security/voltage-vulnerability-disclosure.yml
- type: Security
  url: security/voltage-vulnerability-disclosure.yml
- type: DomainSecurity
  url: security/voltage-domain-security.yml
- type: Website
  url: https://voltage.cloud
- type: DeveloperPortal
  url: https://docs.voltageapi.com
- type: Documentation
  url: https://docs.voltageapi.com
- type: APIReference
  url: https://voltageapi.com/v1/docs
- type: GettingStarted
  url: https://docs.voltageapi.com/developer-guide
- type: Support
  url: https://voltage.cloud/support
- type: Blog
  url: https://voltage.cloud/blog
- type: Pricing
  url: https://voltage.cloud/pricing
- type: SignUp
  url: https://app.voltage.cloud
- type: TermsOfService
  url: https://voltage.cloud/terms
- type: PrivacyPolicy
  url: https://voltage.cloud/privacy
- type: GitHubOrganization
  url: https://github.com/voltagecloud
- type: StatusPage
  url: https://status.voltage.cloud
- type: ChangeLog
  url: https://docs.voltageapi.com/release-notes
- type: LLMsTxt
  url: llms/voltage-llms.txt
- type: Authentication
  url: authentication/voltage-authentication.yml
- type: Conventions
  url: conventions/voltage-conventions.yml
- type: Idempotency
  url: conventions/voltage-conventions.yml
- type: ChangeLog
  name: Voltage Payments changelog (artifact)
  url: changelog/voltage-changelog.yml
- type: Lifecycle
  url: lifecycle/voltage-lifecycle.yml
- type: Sandbox
  url: sandbox/voltage-sandbox.yml
- type: AsyncAPI
  url: asyncapi/voltage-payments-asyncapi.yml
- type: Webhooks
  url: asyncapi/voltage-payments-webhooks.yml
- type: X-MCPServerCandidate
  url: mcp/voltage-mcp.yml
  note: 'Renamed from MCPServer 2026-09-03 (roadmap#247): the manifest self-describes as status: candidate — a tool list derived
    from the published API contracts, not an existing server. The scorer already read the manifest and reported mcp_server
    correctly; the MCPServer type was crediting the artifact-type surfaces with a server that does not exist.'
- type: ErrorCatalog
  url: errors/voltage-problem-types.yml
- type: Conformance
  url: conformance/voltage-conformance.yml
- type: Compliance
  url: conformance/voltage-conformance.yml
- type: DataModel
  url: data-model/voltage-data-model.yml
- type: CLI
  url: cli/voltage-cli.yml
- type: Packages
  url: packages/voltage-packages.yml
- type: SDKs
  url: packages/voltage-packages.yml
- type: WellKnown
  url: well-known/voltage-well-known.yml
- type: SecurityTxt
  url: well-known/voltage-security.txt
- type: AgentSkill
  url: skills/_index.yml

Voltage API — frequently asked questions

Does Voltage have an API?

Yes. APIs.io lists 1 API from Voltage, including Voltage Payments API.

How do I authenticate with the Voltage API?

Voltage uses bearer-token authentication (apiKey · 2 schemes). The details are profiled on APIs.io as Voltage Authentication.

Is the Voltage API ready for AI agents?

Voltage has a Kin Score of 53.6 out of 100 (developing) and an Agent Readiness score of 26.8 (agent-aware), scored by API Evangelist on 2026-11-06.

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