SingleFile

SingleFile is an AI-powered entity management and corporate compliance platform for corporations, law firms, and investment organizations. It automates business entity formation, EIN filing, annual report filing, registered agent services, UCC filings, and Corporate Transparency Act (BOI/FinCEN) reporting across all 52 US jurisdictions. The SingleFile External API (v1) exposes organizations, entities, contacts, jurisdictions, documents, orders, tasks, and filing schemas over a REST/JSON interface secured with OAuth 2.0 client credentials, with webhooks for real-time order, document, entity, jurisdiction, and task events. SingleFile is SOC 2 Type II certified.

SingleFile publishes 7 APIs on the APIs.io network, including documents API, entities API, jurisdictions API, and 4 more. Tagged areas include Company, Compliance, Legal, Entity Management, and Corporate Compliance.

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

SingleFile’s developer surface includes authentication, documentation, API reference, getting-started guide, engineering blog, signup flow, support, and 23 more developer resources.

🌐 Visit website 📡 Source on GitHub
48.6/100 developing ▬ flat Agent 78/100 agent native Full breakdown ↓
scored 2026-07-27 · rubric v0.5
AccessSelf serve
7 APIs 1 MCP Servers
CompanyComplianceLegalEntity ManagementCorporate ComplianceRegistered AgentBusiness FilingsRegulatoryAPIWebhooksOAuth

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-07-27 · rubric v0.5
Composite quality — 48.6/100 · developing
Contract Quality 12.8 / 25
Developer Ergonomics 14.8 / 20
Commercial Clarity 10.0 / 20
Operational Transparency 1.0 / 13
Governance 0.0 / 12
Discoverability 10.0 / 10
Agent readiness — 78/100 · 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 7 / 7
Typed Event Surface 6 / 6
Agent Skills 5 / 5
Well-Known Catalog 0 / 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/singlefile: 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 7

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

SingleFile documents API

Formation and compliance documents

SingleFile entities API

Business entities — create, list, read, update, and their contacts, documents, jurisdictions, orders and tasks

SingleFile jurisdictions API

Entity jurisdictions and DBAs across US states

SingleFile orders API

Filing orders — create, place, update, and document-request driven order creation

SingleFile organizations API

Organizations that own entities — CRUD plus contacts, documents, entities, orders and tasks

SingleFile schemas API

JSON schemas for order payloads by entity_type, filing_type and jurisdiction

SingleFile tasks API

Compliance tasks and deadlines

Scroll for all 7

MCP Servers 1

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

singlefile-mcp.yml

MCP SERVER

Rate Limits 1

Documented rate limits and quota policies.

Singlefile Rate Limits

0 limits

RATE LIMITS

Event Specifications 1

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

SingleFile Webhooks

Webhook event surface for SingleFile. Endpoints are configured in Profile Settings > Webhook Settings; deliveries are HTTPS-only and retried with exponential backoff on 5xx.

ASYNCAPI

Security Posture 3

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

Singlefile Authentication

oauth2 · 1 scheme

SECURITY

Singlefile Domain Security

TLSv1.3 · DNSSEC · DMARC

SECURITY

Singlefile Trust Center

SOC 2 Type II

SECURITY

Scopes 1

OAuth scopes governing access to this provider's APIs.

Singlefile Scopes

2 scopes · clientCredentials

2 scopes

SCOPES

Agentic Access 1

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

Singlefile Agentic Access

50 operations · 25 acting

50 operations · 25 acting

AGENTIC

Resources

Get Started 5

Portal, sign-up, and the first successful call

DeveloperPortal
DeveloperPortal
 GettingStarted
GettingStarted
 SignUp
SignUp
 Login
Login
 Sandbox
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

AgenticAccess
AgenticAccess
 LLMsTxt
LLMsTxt
 MCPServer
MCPServer
 AgentSkill
AgentSkill

Design & Contract 6

Pagination, idempotency, versioning, errors, and events

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

Access & Security 5

Authentication, authorization, and security posture

TrustCenter
TrustCenter
 DomainSecurity
DomainSecurity
 OAuthScopes
OAuthScopes
 Authentication
Authentication
 Compliance
Compliance

Operate 2

Status, limits, changes, and where to get help

Support
Support
 RateLimits
RateLimits

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

Other 1

Properties that don't map to a standard resource type

Overlay
Overlay

Source (apis.yml)

apis.yml Raw ↑ 
aid: singlefile
name: SingleFile
description: SingleFile is an AI-powered entity management and corporate compliance platform for corporations, law firms,
  and investment organizations. It automates business entity formation, EIN filing, annual report filing, registered agent
  services, UCC filings, and Corporate Transparency Act (BOI/FinCEN) reporting across all 52 US jurisdictions. The SingleFile
  External API (v1) exposes organizations, entities, contacts, jurisdictions, documents, orders, tasks, and filing schemas
  over a REST/JSON interface secured with OAuth 2.0 client credentials, with webhooks for real-time order, document, entity,
  jurisdiction, and task events. SingleFile is SOC 2 Type II certified.
url: https://raw.githubusercontent.com/api-evangelist/singlefile/refs/heads/main/apis.yml
x-type: company
x-source: vc-portfolio
x-backed-by:
- foundry-group
x-tier: enriched
x-tier-reason: api-surface-enriched
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
specificationVersion: '0.20'
created: '2026-07-17'
modified: '2026-07-21'
tags:
- Company
- Compliance
- Legal
- Entity Management
- Corporate Compliance
- Registered Agent
- Business Filings
- Regulatory
- API
- Webhooks
- OAuth
apis:
- aid: singlefile:singlefile-documents-api
  name: SingleFile documents API
  description: Formation and compliance documents
  humanURL: https://docs.singlefile.ai/
  baseURL: https://api.demo.singlefile.ai/external-api/v1
  tags:
  - documents
  properties:
  - type: OpenAPI
    url: openapi/singlefile-documents-api-openapi.yml
  - type: Documentation
    url: https://docs.singlefile.ai/
  - type: APIReference
    url: https://docs.singlefile.ai/reference/
  - type: GettingStarted
    url: https://docs.singlefile.ai/docs/getting-started
- aid: singlefile:singlefile-entities-api
  name: SingleFile entities API
  description: Business entities — create, list, read, update, and their contacts, documents, jurisdictions, orders and tasks
  humanURL: https://docs.singlefile.ai/
  baseURL: https://api.demo.singlefile.ai/external-api/v1
  tags:
  - entities
  properties:
  - type: OpenAPI
    url: openapi/singlefile-entities-api-openapi.yml
  - type: Documentation
    url: https://docs.singlefile.ai/
  - type: APIReference
    url: https://docs.singlefile.ai/reference/
  - type: GettingStarted
    url: https://docs.singlefile.ai/docs/getting-started
- aid: singlefile:singlefile-jurisdictions-api
  name: SingleFile jurisdictions API
  description: Entity jurisdictions and DBAs across US states
  humanURL: https://docs.singlefile.ai/
  baseURL: https://api.demo.singlefile.ai/external-api/v1
  tags:
  - jurisdictions
  properties:
  - type: OpenAPI
    url: openapi/singlefile-jurisdictions-api-openapi.yml
  - type: Documentation
    url: https://docs.singlefile.ai/
  - type: APIReference
    url: https://docs.singlefile.ai/reference/
  - type: GettingStarted
    url: https://docs.singlefile.ai/docs/getting-started
- aid: singlefile:singlefile-orders-api
  name: SingleFile orders API
  description: Filing orders — create, place, update, and document-request driven order creation
  humanURL: https://docs.singlefile.ai/
  baseURL: https://api.demo.singlefile.ai/external-api/v1
  tags:
  - orders
  properties:
  - type: OpenAPI
    url: openapi/singlefile-orders-api-openapi.yml
  - type: Documentation
    url: https://docs.singlefile.ai/
  - type: APIReference
    url: https://docs.singlefile.ai/reference/
  - type: GettingStarted
    url: https://docs.singlefile.ai/docs/getting-started
- aid: singlefile:singlefile-organizations-api
  name: SingleFile organizations API
  description: Organizations that own entities — CRUD plus contacts, documents, entities, orders and tasks
  humanURL: https://docs.singlefile.ai/
  baseURL: https://api.demo.singlefile.ai/external-api/v1
  tags:
  - organizations
  properties:
  - type: OpenAPI
    url: openapi/singlefile-organizations-api-openapi.yml
  - type: Documentation
    url: https://docs.singlefile.ai/
  - type: APIReference
    url: https://docs.singlefile.ai/reference/
  - type: GettingStarted
    url: https://docs.singlefile.ai/docs/getting-started
- aid: singlefile:singlefile-schemas-api
  name: SingleFile schemas API
  description: JSON schemas for order payloads by entity_type, filing_type and jurisdiction
  humanURL: https://docs.singlefile.ai/
  baseURL: https://api.demo.singlefile.ai/external-api/v1
  tags:
  - schemas
  properties:
  - type: OpenAPI
    url: openapi/singlefile-schemas-api-openapi.yml
  - type: Documentation
    url: https://docs.singlefile.ai/
  - type: APIReference
    url: https://docs.singlefile.ai/reference/
  - type: GettingStarted
    url: https://docs.singlefile.ai/docs/getting-started
- aid: singlefile:singlefile-tasks-api
  name: SingleFile tasks API
  description: Compliance tasks and deadlines
  humanURL: https://docs.singlefile.ai/
  baseURL: https://api.demo.singlefile.ai/external-api/v1
  tags:
  - tasks
  properties:
  - type: OpenAPI
    url: openapi/singlefile-tasks-api-openapi.yml
  - type: Documentation
    url: https://docs.singlefile.ai/
  - type: APIReference
    url: https://docs.singlefile.ai/reference/
  - type: GettingStarted
    url: https://docs.singlefile.ai/docs/getting-started
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: TrustCenter
  url: security/singlefile-trust-center.yml
- type: DomainSecurity
  url: security/singlefile-domain-security.yml
- type: AgenticAccess
  url: agentic-access/singlefile-agentic-access.yml
- type: OAuthScopes
  url: scopes/singlefile-scopes.yml
- type: Authentication
  url: authentication/singlefile-authentication.yml
- type: Website
  url: https://www.singlefile.ai
- type: DeveloperPortal
  url: https://docs.singlefile.ai/
- type: Documentation
  url: https://docs.singlefile.ai/
- type: APIReference
  url: https://docs.singlefile.ai/reference/
- type: GettingStarted
  url: https://docs.singlefile.ai/docs/getting-started
- type: Blog
  url: https://www.singlefile.ai/blog/
- type: SignUp
  url: https://www.singlefile.ai/get-started/
- type: Login
  url: https://app.singlefile.ai/
- type: TermsOfService
  url: https://www.singlefile.ai/terms-of-service/
- type: PrivacyPolicy
  url: https://www.singlefile.ai/privacy-policy/
- type: Support
  url: https://www.singlefile.ai/faqs/
- type: LLMsTxt
  url: llms/singlefile-llms.txt
- type: MCPServer
  url: mcp/singlefile-mcp.yml
- type: Overlay
  url: overlays/singlefile-openapi-overlay.yaml
- type: Conformance
  url: conformance/singlefile-conformance.yml
- type: Compliance
  url: https://www.singlefile.ai/
- type: ErrorCatalog
  url: errors/singlefile-error-codes.yml
- type: Lifecycle
  url: lifecycle/singlefile-lifecycle.yml
- type: Sandbox
  url: sandbox/singlefile-sandbox.yml
- type: Conventions
  url: conventions/singlefile-conventions.yml
- type: DataModel
  url: data-model/singlefile-data-model.yml
- type: RateLimits
  url: rate-limits/singlefile-rate-limits.yml
- type: AsyncAPI
  url: asyncapi/singlefile-webhooks-asyncapi.yml
- type: Webhooks
  url: asyncapi/singlefile-webhooks-asyncapi.yml
- type: AgentSkill
  url: skills/_index.yml
image: https://www.singlefile.ai/favicon.ico
rate_limits:
- name: user
  limit_count: 1000
  window: hour
- name: burst
  limit_count: 60
  window: minute
- name: anonymous
  limit_count: 100
  window: unspecified
x-enrichment:
  date: '2026-07-21'
  status: enriched
  artifacts_added: 22
  pass: local-v1