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 6 API contracts indexed on the APIs.io network, including Agents API, Auth API, Directory API, and 3 more. Tagged areas include Company, AI Agents, Agentic Payments, Identity, and Payments.

The Skyfire catalog on APIs.io includes 1 JSON-LD context and 1 Spectral governance ruleset.

Skyfire’s developer surface includes engineering blog, documentation, API reference, getting-started guide, signup flow, support, authentication, and 30 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

46.0/100 developing ▬ flat Agent 37/100 agent ready Front door AI 5/6 prominent Heartbeat 100/100 alive saas Full breakdown ↓
scored 2026-11-06 · rubric v0.27.0 · Show this score on your site →

4 published contracts 1 MCP Servers 2 Agent Skills

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

What this lets a business do 1

Business capabilities this provider's published APIs can perform, derived from its own contracts. Browse all capabilities →

Agent Infrastructure & Agentic Commerce

AE-100

AgentsDirectoryOrganizationsTokens

POST /api/v1/tokens POST /api/v1/tokens/charge POST /api/v1/tokens/introspect GET /api/v1/tokens/{tokenId}/charges

Kin Score

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

Composite quality — 46.0/100 · developing

Contract Quality 12.8 / 19

Developer Ergonomics 9.3 / 15

Access Clarity 3.2 / 15

Operational Transparency 0.3 / 10

Contract Governance 3.2 / 9

Discoverability 6.0 / 8

Regulatory Posture 3.3 / 15

Create-or-Update Ergonomics 0.0 / 10

Agent readiness — 37/100 · agent ready

Machine-Readable Contract 18 / 18

Agentic Access Contract 10 / 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 7 / 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

Delegated User Identity 0 / 6

Protected Resource Metadata 0 / 5

Registration Without a Human 0 / 6

Agentic Commerce Well-Known Document 0 / 5

Pagination 0 / 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 applies to this provider. This API accepts writes, so it carries 10 points of the composite. It is scored from the published contracts themselves: whether a caller can create-or-update in one call, whether the write accepts a key the caller already holds, and whether the response says which branch ran. Without that, every write needs a search-and-branch in front of it, and the first time that check is skipped a duplicate record is created. Scored against the observed mean rather than raw — a provider at the catalog average is unchanged by this facet, not penalised by it.

The six quality facets above are damped to 75 points between them, because the conditional facet above carries the other 25. That is why each facet's contribution is shown against a damped maximum: raising a quality facet moves the composite by 75% 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):

Idempotency +9 pts — OpenAPI mutating operations declare an idempotency key — a header, a request-body property, or a named de-duplication token whose own description says so (verified); else common[].type matches /idempoten/i (documented)
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)
Registration Without a Human +6 pts — a `registration_endpoint` in the served RFC 8414 / OIDC discovery document
Delegated User Identity +6 pts — a served discovery document listing authorization_code in grant_types_supported (served), else an oauth2 authorizationCode flow or openIdConnect declared in an OpenAPI (documented)
Typed Event Surface +6 pts — AsyncAPI document, OR webhooks/callbacks objects in the as-published OpenAPI, OR common[].type includes Webhooks

7 more unmet checks in the Agent Readiness table above.

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

Access Clarity scores 21.1 — up to +15.8 composite points
Operational Transparency scores 2.6 — up to +12.7 composite points
Contract Quality scores 68.2 — up to +8.0 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/skyfire/apis.yml: open an issue on github.com/api-evangelist/skyfire 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 →

Markets this provider is in provisional

The Kin Score Market layer reads a provider inside its market: its position, and how deep its integrations go. Depth is only comparable within a position. Provisional and unweighted: not part of the Kin Score or agent readiness.

Market	Position	Depth	Registered MCP server	Declares compatibility
Agent Skills (SKILL.md packages)	undeclared	-	-	1
Stablecoins and Tokenization (stablecoin issuers, tokenized assets)	undeclared	-	-	1
x402 Micropayments & Agentic Pay-per-Call	undeclared	-	-	1

Registered MCP server and declares compatibility are report only — not weighted. Undeclared means we found nothing we can read, so there is no number: we never infer integrations.

Standards implemented 3

Standards this provider implements or carries. De facto ones are profiled and measured by the API Commons; formal ones come from the standards directory and are linked by the provider's own tags. The evidence column says how each claim was established — not that it was made.

Model Context Protocol (MCP)

measured — observed by APIs.io (verified)

Agent Skills

measured — observed by APIs.io (published)

OpenAPI

measured — observed by APIs.io (published)

APIs 6

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...

Skyfire Agents API

The Agents API from Skyfire — 6 operation(s) for agents.

Skyfire Auth API

The Auth API from Skyfire — 1 operation(s) for auth.

Skyfire Directory API

The Directory API from Skyfire — 5 operation(s) for directory.

Skyfire Organizations API

The Organizations API from Skyfire — 10 operation(s) for organizations.

Skyfire Tokens API

The Tokens API from Skyfire — 4 operation(s) for tokens.

MCP Servers 1

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

Skyfire MCP Server

Remote MCP server at mcp.skyfire.xyz over HTTP.

MCP SERVER

Agent Skills 2

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

skyfire

AGENT SKILL

skyfire

AGENT SKILL

Semantic Vocabularies 1

JSON-LD contexts and semantic vocabularies used across these APIs.

Skyfire Context

3 classes · 27 properties

JSON-LD

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs.

Skyfire API Rules

13 rules · 10 errors 1 warnings 2 info

SPECTRAL

JSON Schema 3

Standalone JSON Schema definitions for this provider's data models.

DirectoryService

17 properties

JSON SCHEMA

OrganizationUser

8 properties

JSON SCHEMA

SellerService

21 properties

JSON SCHEMA

Security Posture 2

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

Skyfire Authentication

apiKey · 2 schemes

SECURITY

Skyfire Domain Security

TLSv1.3 · HSTS · DNSSEC · DMARC

SECURITY

Agentic Access 1

Recommended x-agentic-access execution contracts for AI agents.

Skyfire Agentic Access

31 operations · 17 acting

AGENTIC

Resources

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

AgenticAccess

MCPServer

LLMsTxt

WellKnown

AgentSkill

Design & Contract 10

Pagination, idempotency, versioning, errors, and events

Spectral

JSONLD

Vocabulary

ErrorCatalog

ErrorCatalog

Conformance

Lifecycle

Conventions

Components

DataModel

Scroll for all 10

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 4

The organization behind the API

Blog

BlogRSS

Website

Blog

Other 3

Properties that don't map to a standard resource type

CapabilityMap

CapabilityMap

Hosts

Hosts

Vendors

Vendors

Source (apis.yml)

aid: skyfire
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: unknown
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Unknown
  confidence: low
  source:
  - authentication
  - security
  - sandbox
  generated: '2026-11-06'
  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: '2026-10-06'
x-docs-platform: readme
x-docs-platform-confidence: high
x-docs-platform-checked: 2026-10-04
tags:
- Company
- AI Agents
- Agentic 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
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: CapabilityMap
  url: capabilities/skyfire-capability-edges.yml
  name: Skyfire Business Capability Map
- type: AgenticAccess
  url: agentic-access/skyfire-agentic-access.yml
- type: Spectral
  url: rules/skyfire-rules.yml
- type: JSONLD
  url: json-ld/skyfire-context.jsonld
- type: Vocabulary
  url: vocabulary/skyfire-vocabulary.yml
- type: ErrorCatalog
  url: errors/skyfire-problem-types.yml
- type: Hosts
  url: hosts/skyfire-hosts.yml
- type: Vendors
  url: vendors/skyfire-vendors.yml
- url: https://skyfire.xyz/blog/
  type: Blog
- url: https://skyfire.xyz/blog/feed/
  type: BlogRSS
- 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
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:
  - Agentic Payments
  - Identity
  - Tokens
  tags_raw:
  - 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
  aid: skyfire:skyfire-api
- aid: skyfire:skyfire-agents-api
  name: Skyfire Agents API
  description: The Agents API from Skyfire — 6 operation(s) for agents.
  humanURL: https://docs.skyfire.xyz/reference/skyfire-apis
  baseURL: https://api.skyfire.xyz
  tags:
  - Agents
  properties:
  - type: OpenAPI
    url: openapi/skyfire-agents-api-openapi.yml
  - type: JSONSchema
    url: json-schema/skyfire-seller-service-schema.json
  - type: JSONSchema
    url: json-schema/skyfire-organization-user-schema.json
  - type: JSONSchema
    url: json-schema/skyfire-directory-service-schema.json
- aid: skyfire:skyfire-auth-api
  name: Skyfire Auth API
  description: The Auth API from Skyfire — 1 operation(s) for auth.
  humanURL: https://docs.skyfire.xyz/reference/skyfire-apis
  baseURL: https://api.skyfire.xyz
  tags:
  - Authentication
  tags_raw:
  - Auth
  properties:
  - type: OpenAPI
    url: openapi/skyfire-auth-api-openapi.yml
  - type: JSONSchema
    url: json-schema/skyfire-seller-service-schema.json
  - type: JSONSchema
    url: json-schema/skyfire-organization-user-schema.json
  - type: JSONSchema
    url: json-schema/skyfire-directory-service-schema.json
- aid: skyfire:skyfire-directory-api
  name: Skyfire Directory API
  description: The Directory API from Skyfire — 5 operation(s) for directory.
  humanURL: https://docs.skyfire.xyz/reference/skyfire-apis
  baseURL: https://api.skyfire.xyz
  tags:
  - Directory
  properties:
  - type: OpenAPI
    url: openapi/skyfire-directory-api-openapi.yml
  - type: JSONSchema
    url: json-schema/skyfire-seller-service-schema.json
  - type: JSONSchema
    url: json-schema/skyfire-organization-user-schema.json
  - type: JSONSchema
    url: json-schema/skyfire-directory-service-schema.json
- aid: skyfire:skyfire-organizations-api
  name: Skyfire Organizations API
  description: The Organizations API from Skyfire — 10 operation(s) for organizations.
  humanURL: https://docs.skyfire.xyz/reference/skyfire-apis
  baseURL: https://api.skyfire.xyz
  tags:
  - Organization
  tags_raw:
  - Organizations
  properties:
  - type: OpenAPI
    url: openapi/skyfire-organizations-api-openapi.yml
  - type: JSONSchema
    url: json-schema/skyfire-seller-service-schema.json
  - type: JSONSchema
    url: json-schema/skyfire-organization-user-schema.json
  - type: JSONSchema
    url: json-schema/skyfire-directory-service-schema.json
- aid: skyfire:skyfire-tokens-api
  name: Skyfire Tokens API
  description: The Tokens API from Skyfire — 4 operation(s) for tokens.
  humanURL: https://docs.skyfire.xyz/reference/skyfire-apis
  baseURL: https://api.skyfire.xyz
  tags:
  - Tokens
  properties:
  - type: OpenAPI
    url: openapi/skyfire-tokens-api-openapi.yml
  - type: JSONSchema
    url: json-schema/skyfire-seller-service-schema.json
  - type: JSONSchema
    url: json-schema/skyfire-organization-user-schema.json
  - type: JSONSchema
    url: json-schema/skyfire-directory-service-schema.json
x-enrichment:
  date: '2026-07-21'
  status: enriched
  artifacts_added: 17
  pass: local-v1
x-readme-harvest:
  date: '2026-10-14'
  ops: 31
  tool: harvest-readme-openapi.py
  portal: https://docs.skyfire.xyz

Skyfire API — frequently asked questions

Does Skyfire have an API?

Yes. APIs.io lists 6 APIs from Skyfire, including Skyfire API, Skyfire Agents API and Skyfire Auth API, and 3 more.

Is there an OpenAPI specification for the Skyfire API?

Yes. APIs.io indexes 5 OpenAPI specifications for Skyfire, each linked for download from this page.

How do I authenticate with the Skyfire API?

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

Does Skyfire have an MCP server?

Yes. APIs.io lists 1 MCP server for Skyfire: Remote MCP server at mcp.skyfire.xyz over HTTP.

Is the Skyfire API ready for AI agents?

Skyfire has a Kin Score of 46.0 out of 100 (developing) and an Agent Readiness score of 37.4 (agent-ready), scored by API Evangelist on 2026-11-06.

Work with this as data

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get_provider_artifactsEvery artifact this provider publishes, grouped by type.
get_provider_operationsEvery operation across all of their OpenAPIs — one call instead of parsing every spec.
get_provider_toolsEvery MCP tool they ship, with the operation each wraps.
get_provider_evidenceHow each part of their score was established. Free — the basis for a claim should not sit behind it.
get_provider_ratingPRO — composite, band, trend and facet scores.
apis_io_searchSTART HERE — APIs, providers and tags for one query, each with its total.
resolveTurn a domain, URL or GitHub org into the provider it belongs to.
find_cohortsEvery scored population of providers in the catalog.

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