Skyfire

Skyfire is the open identity and payments layer for AI agents. It lets AI agents securely create accounts, verify a real-world identity (Know Your Agent, KYA), and autonomously pay for digital services using token-based authentication and stablecoin settlement. Developers use Skyfire to monetize APIs, tools, MCP servers, and content directly to agents. The platform issues three signed, interoperable KYAPay token types — kya (identity), pay (payment), and kya-pay (combined) — that buyer agents present to seller services over a simple REST API and a hosted MCP server. Sellers validate and charge tokens, discover services, and manage seller-service lifecycles, while enterprises manage users and agents through admin APIs. Skyfire is backed by DCVC, Lightspeed Venture Partners, and Trinity Ventures.

Skyfire publishes 1 API on the APIs.io network. Tagged areas include Company, AI Agents, Agent Payments, Identity, and Payments.

Skyfire’s developer surface includes documentation, API reference, getting-started guide, engineering blog, signup flow, support, authentication, and 20 more developer resources.

🌐 Visit website 📡 Source on GitHub

27.2/100 thin ▬ flat Agent 27/100 agent aware Full breakdown ↓
scored 2026-08-20 · rubric v0.12.0

AccessSelf serve

1 APIs 1 MCP Servers

Company AI Agents Agent Payments Identity Payments Authentication Stablecoins MCP Agentic CommerceKnow Your Agent

Kin Score

Kin Score How this is scored →
scored 2026-08-20 · rubric v0.12.0

Composite quality — 27.2/100 · thin

Contract Quality 0.0 / 21

Developer Ergonomics 10.1 / 17

Access Clarity 3.6 / 17

Operational Transparency 0.3 / 11

Contract Governance 1.9 / 10

Discoverability 6.5 / 9

Regulatory Posture 5.9 / 15

Agent readiness — 27/100 · agent aware

Machine-Readable Contract 0 / 18

Agentic Access Contract 0 / 10

Documented Reversibility 0 / 6

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 0 / 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

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.

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/.

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/skyfire: 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 1

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

Skyfire API

REST API for AI-agent identity and payments. Buyer agents create kya, pay, and kya-pay tokens; seller agents introspect and charge tokens and manage seller services; enterprises...

MCP Servers 1

Model Context Protocol servers that expose these APIs to AI agents.

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 4

MCP servers, agent skills, and machine-readable catalogs

MCPServer

LLMsTxt

WellKnown

AgentSkill

Design & Contract 6

Pagination, idempotency, versioning, errors, and events

ErrorCatalog

Conformance

Lifecycle

Conventions

Components

DataModel

Build 3

SDKs, sample code, and the tooling you integrate with

GitHubOrganization

GitHubOrganization

Packages

Packages

SDKs

SDKs

Access & Security 2

Authentication, authorization, and security posture

Authentication

Authentication

DomainSecurity

DomainSecurity

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 2

The organization behind the API

Website

Website

Blog

Blog

Source (apis.yml)

aid: skyfire
accessModel:
  pricing: unknown
  onboarding: self-serve
  trial: false
  try_now: false
  public: false
  label: Self-serve signup
  confidence: medium
  source:
  - authentication
  generated: '2026-07-22'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/skyfire.png
name: Skyfire
description: Skyfire is the open identity and payments layer for AI agents. It lets AI agents securely create accounts, verify
  a real-world identity (Know Your Agent, KYA), and autonomously pay for digital services using token-based authentication
  and stablecoin settlement. Developers use Skyfire to monetize APIs, tools, MCP servers, and content directly to agents.
  The platform issues three signed, interoperable KYAPay token types — kya (identity), pay (payment), and kya-pay (combined)
  — that buyer agents present to seller services over a simple REST API and a hosted MCP server. Sellers validate and charge
  tokens, discover services, and manage seller-service lifecycles, while enterprises manage users and agents through admin
  APIs. Skyfire is backed by DCVC, Lightspeed Venture Partners, and Trinity Ventures.
url: https://raw.githubusercontent.com/api-evangelist/skyfire/refs/heads/main/apis.yml
x-type: company
x-source: vc-portfolio
x-backed-by:
- dcvc
- lightspeed-venture-partners
- trinity-ventures
x-tier: stub
x-tier-reason: portfolio-lead
specificationVersion: '0.23'
created: '2026-07-17'
modified: '2026-07-21'
tags:
- Company
- AI Agents
- Agent Payments
- Identity
- Payments
- Authentication
- Stablecoins
- MCP
- Agentic Commerce
- Know Your Agent
tags_raw:
- Company
- AI Agents
- Agent Payments
- Identity
- Payments
- Authentication
- Stablecoin
- MCP
- Agentic Commerce
- Know Your Agent
apis:
- name: Skyfire API
  description: REST API for AI-agent identity and payments. Buyer agents create kya, pay, and kya-pay tokens; seller agents
    introspect and charge tokens and manage seller services; enterprises manage users. Authenticated with a single skyfire-api-key
    header (role-specific keys).
  humanURL: https://docs.skyfire.xyz/reference/skyfire-apis
  baseURL: https://api.skyfire.xyz
  tags:
  - Agent Payments
  - Identity
  - Tokens
  properties:
  - type: Documentation
    url: https://docs.skyfire.xyz/docs/developer-documentation
  - type: APIReference
    url: https://docs.skyfire.xyz/reference/skyfire-apis
  - type: Authentication
    url: authentication/skyfire-authentication.yml
  - type: MCPServer
    url: mcp/skyfire-mcp.yml
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: Website
  url: https://skyfire.xyz
- type: DeveloperPortal
  url: https://docs.skyfire.xyz
- type: Documentation
  url: https://docs.skyfire.xyz/docs/developer-documentation
- type: APIReference
  url: https://docs.skyfire.xyz/reference/skyfire-apis
- type: GettingStarted
  url: https://docs.skyfire.xyz/docs/quickstart
- type: Blog
  url: https://skyfire.xyz/blog
- type: SignUp
  url: https://app.skyfire.xyz
- type: Login
  url: https://app.skyfire.xyz
- type: Support
  url: mailto:support@skyfire.xyz
- type: TermsOfService
  url: https://skyfire.xyz/terms
- type: PrivacyPolicy
  url: https://skyfire.xyz/privacy
- type: GitHubOrganization
  url: https://github.com/skyfire-xyz
- type: Authentication
  url: authentication/skyfire-authentication.yml
- type: MCPServer
  url: mcp/skyfire-mcp.yml
- type: LLMsTxt
  url: llms/skyfire-llms.txt
- type: Packages
  url: packages/skyfire-packages.yml
- type: SDKs
  url: packages/skyfire-packages.yml
- type: WellKnown
  url: well-known/skyfire-well-known.yml
- type: ErrorCatalog
  url: errors/skyfire-error-codes.yml
- type: Conformance
  url: conformance/skyfire-conformance.yml
- type: Lifecycle
  url: lifecycle/skyfire-lifecycle.yml
- type: Conventions
  url: conventions/skyfire-conventions.yml
- type: Sandbox
  url: sandbox/skyfire-sandbox.yml
- type: Components
  url: components/skyfire-components.yml
- type: DataModel
  url: data-model/skyfire-data-model.yml
- type: DomainSecurity
  url: security/skyfire-domain-security.yml
- type: AgentSkill
  url: skills/skyfire-skyfire.md
x-enrichment:
  date: '2026-07-21'
  status: enriched
  artifacts_added: 17
  pass: local-v1