aid: arch
name: Arch
description: >-
  Arch (Arch Labs, Inc.) is the digital administration platform for private
  markets and alternative investments. It aggregates statements, capital calls,
  tax documents, and data from hundreds of funds and sources into one secure
  portal, then uses automation and AI to extract data, summarize documents,
  surface insights, and coordinate workflows for limited partners, advisors,
  accountants, family offices, and fund service providers. The Arch Client API
  is a JSON HTTP REST API that lets customers programmatically access holdings,
  cash flows, investing/issuing entities, activities, tasks, files, and tax
  documents on the platform, authenticating with client-credential JWT bearer
  tokens. Founded in 2018, Arch is backed by Oak HC/FT, Menlo Ventures, Craft
  Ventures, Uncork Capital, Citi Ventures, and others.
url: https://raw.githubusercontent.com/api-evangelist/arch/refs/heads/main/apis.yml
x-type: company
x-source: vc-portfolio
x-backed-by:
- menlo-ventures
- uncork-capital
x-tier: profile
x-tier-reason: enriched-from-client-api
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: '2026-07-18'
image: https://archlabs.com/images/arch-logo.svg
tags:
- Company
- Private Markets
- Alternative Investments
- Fintech
- Wealth Management
- Investment Administration
- Portfolio Management
- Documents
apis:
- aid: arch:arch-accounts-api
  name: Arch Accounts API
  description: The Accounts API from Arch — 2 operation(s) for accounts.
  humanURL: https://arch.co/client-api/api-docs/
  baseURL: https://arch.co/client-api/v0
  tags:
  - Accounts
  properties:
  - type: OpenAPI
    url: openapi/arch-accounts-api-openapi.yml
  - type: Documentation
    url: https://arch.co/client-api/api-docs/
  - type: APIReference
    url: https://arch.co/client-api/api-docs/
  - type: Authentication
    url: authentication/arch-authentication.yml
  - type: RateLimits
    url: rate-limits/arch-rate-limits.yml
  - type: ErrorCatalog
    url: errors/arch-problem-types.yml
  - type: Conventions
    url: conventions/arch-conventions.yml
  - type: DataModel
    url: data-model/arch-data-model.yml
- aid: arch:arch-activities-api
  name: Arch Activities API
  description: Interact with Arch objects representing financial updates
  humanURL: https://arch.co/client-api/api-docs/
  baseURL: https://arch.co/client-api/v0
  tags:
  - Activities
  properties:
  - type: OpenAPI
    url: openapi/arch-activities-api-openapi.yml
  - type: Documentation
    url: https://arch.co/client-api/api-docs/
  - type: APIReference
    url: https://arch.co/client-api/api-docs/
  - type: Authentication
    url: authentication/arch-authentication.yml
  - type: RateLimits
    url: rate-limits/arch-rate-limits.yml
  - type: ErrorCatalog
    url: errors/arch-problem-types.yml
  - type: Conventions
    url: conventions/arch-conventions.yml
  - type: DataModel
    url: data-model/arch-data-model.yml
- aid: arch:arch-addepar-api
  name: Arch Addepar API
  description: The Addepar API from Arch — 1 operation(s) for addepar.
  humanURL: https://arch.co/client-api/api-docs/
  baseURL: https://arch.co/client-api/v0
  tags:
  - Addepar
  properties:
  - type: OpenAPI
    url: openapi/arch-addepar-api-openapi.yml
  - type: Documentation
    url: https://arch.co/client-api/api-docs/
  - type: APIReference
    url: https://arch.co/client-api/api-docs/
  - type: Authentication
    url: authentication/arch-authentication.yml
  - type: RateLimits
    url: rate-limits/arch-rate-limits.yml
  - type: ErrorCatalog
    url: errors/arch-problem-types.yml
  - type: Conventions
    url: conventions/arch-conventions.yml
  - type: DataModel
    url: data-model/arch-data-model.yml
- aid: arch:arch-authentication-api
  name: Arch Authentication API
  description: The Authentication API from Arch — 1 operation(s) for authentication.
  humanURL: https://arch.co/client-api/api-docs/
  baseURL: https://arch.co/client-api/v0
  tags:
  - Authentication
  properties:
  - type: OpenAPI
    url: openapi/arch-authentication-api-openapi.yml
  - type: Documentation
    url: https://arch.co/client-api/api-docs/
  - type: APIReference
    url: https://arch.co/client-api/api-docs/
  - type: Authentication
    url: authentication/arch-authentication.yml
  - type: RateLimits
    url: rate-limits/arch-rate-limits.yml
  - type: ErrorCatalog
    url: errors/arch-problem-types.yml
  - type: Conventions
    url: conventions/arch-conventions.yml
  - type: DataModel
    url: data-model/arch-data-model.yml
- aid: arch:arch-cash-flows-api
  name: Arch Cash Flows API
  description: Read and write data relating to money inflow / outflow
  humanURL: https://arch.co/client-api/api-docs/
  baseURL: https://arch.co/client-api/v0
  tags:
  - Cash Flows
  properties:
  - type: OpenAPI
    url: openapi/arch-cash-flows-api-openapi.yml
  - type: Documentation
    url: https://arch.co/client-api/api-docs/
  - type: APIReference
    url: https://arch.co/client-api/api-docs/
  - type: Authentication
    url: authentication/arch-authentication.yml
  - type: RateLimits
    url: rate-limits/arch-rate-limits.yml
  - type: ErrorCatalog
    url: errors/arch-problem-types.yml
  - type: Conventions
    url: conventions/arch-conventions.yml
  - type: DataModel
    url: data-model/arch-data-model.yml
- aid: arch:arch-firms-api
  name: Arch Firms API
  description: Reference info about firms.
  humanURL: https://arch.co/client-api/api-docs/
  baseURL: https://arch.co/client-api/v0
  tags:
  - Firms
  properties:
  - type: OpenAPI
    url: openapi/arch-firms-api-openapi.yml
  - type: Documentation
    url: https://arch.co/client-api/api-docs/
  - type: APIReference
    url: https://arch.co/client-api/api-docs/
  - type: Authentication
    url: authentication/arch-authentication.yml
  - type: RateLimits
    url: rate-limits/arch-rate-limits.yml
  - type: ErrorCatalog
    url: errors/arch-problem-types.yml
  - type: Conventions
    url: conventions/arch-conventions.yml
  - type: DataModel
    url: data-model/arch-data-model.yml
- aid: arch:arch-holdings-api
  name: Arch Holdings API
  description: Read holding data and push new investments.
  humanURL: https://arch.co/client-api/api-docs/
  baseURL: https://arch.co/client-api/v0
  tags:
  - Holdings
  properties:
  - type: OpenAPI
    url: openapi/arch-holdings-api-openapi.yml
  - type: Documentation
    url: https://arch.co/client-api/api-docs/
  - type: APIReference
    url: https://arch.co/client-api/api-docs/
  - type: Authentication
    url: authentication/arch-authentication.yml
  - type: RateLimits
    url: rate-limits/arch-rate-limits.yml
  - type: ErrorCatalog
    url: errors/arch-problem-types.yml
  - type: Conventions
    url: conventions/arch-conventions.yml
  - type: DataModel
    url: data-model/arch-data-model.yml
- aid: arch:arch-investing-entities-api
  name: Arch Investing Entities API
  description: Read from and create new investing entities
  humanURL: https://arch.co/client-api/api-docs/
  baseURL: https://arch.co/client-api/v0
  tags:
  - Investing Entities
  properties:
  - type: OpenAPI
    url: openapi/arch-investing-entities-api-openapi.yml
  - type: Documentation
    url: https://arch.co/client-api/api-docs/
  - type: APIReference
    url: https://arch.co/client-api/api-docs/
  - type: Authentication
    url: authentication/arch-authentication.yml
  - type: RateLimits
    url: rate-limits/arch-rate-limits.yml
  - type: ErrorCatalog
    url: errors/arch-problem-types.yml
  - type: Conventions
    url: conventions/arch-conventions.yml
  - type: DataModel
    url: data-model/arch-data-model.yml
- aid: arch:arch-issuing-entities-api
  name: Arch Issuing Entities API
  description: Read from and create new issuing entities
  humanURL: https://arch.co/client-api/api-docs/
  baseURL: https://arch.co/client-api/v0
  tags:
  - Issuing Entities
  properties:
  - type: OpenAPI
    url: openapi/arch-issuing-entities-api-openapi.yml
  - type: Documentation
    url: https://arch.co/client-api/api-docs/
  - type: APIReference
    url: https://arch.co/client-api/api-docs/
  - type: Authentication
    url: authentication/arch-authentication.yml
  - type: RateLimits
    url: rate-limits/arch-rate-limits.yml
  - type: ErrorCatalog
    url: errors/arch-problem-types.yml
  - type: Conventions
    url: conventions/arch-conventions.yml
  - type: DataModel
    url: data-model/arch-data-model.yml
- aid: arch:arch-lookthroughs-api
  name: Arch Lookthroughs API
  description: Fetch data relating to the underling investments made by your own investments
  humanURL: https://arch.co/client-api/api-docs/
  baseURL: https://arch.co/client-api/v0
  tags:
  - Lookthroughs
  properties:
  - type: OpenAPI
    url: openapi/arch-lookthroughs-api-openapi.yml
  - type: Documentation
    url: https://arch.co/client-api/api-docs/
  - type: APIReference
    url: https://arch.co/client-api/api-docs/
  - type: Authentication
    url: authentication/arch-authentication.yml
  - type: RateLimits
    url: rate-limits/arch-rate-limits.yml
  - type: ErrorCatalog
    url: errors/arch-problem-types.yml
  - type: Conventions
    url: conventions/arch-conventions.yml
  - type: DataModel
    url: data-model/arch-data-model.yml
- aid: arch:arch-offerings-api
  name: Arch Offerings API
  description: Get data on individual investment offering opportunities offered by your holdings
  humanURL: https://arch.co/client-api/api-docs/
  baseURL: https://arch.co/client-api/v0
  tags:
  - Offerings
  properties:
  - type: OpenAPI
    url: openapi/arch-offerings-api-openapi.yml
  - type: Documentation
    url: https://arch.co/client-api/api-docs/
  - type: APIReference
    url: https://arch.co/client-api/api-docs/
  - type: Authentication
    url: authentication/arch-authentication.yml
  - type: RateLimits
    url: rate-limits/arch-rate-limits.yml
  - type: ErrorCatalog
    url: errors/arch-problem-types.yml
  - type: Conventions
    url: conventions/arch-conventions.yml
  - type: DataModel
    url: data-model/arch-data-model.yml
- aid: arch:arch-tasks-api
  name: Arch Tasks API
  description: The Tasks API from Arch — 6 operation(s) for tasks.
  humanURL: https://arch.co/client-api/api-docs/
  baseURL: https://arch.co/client-api/v0
  tags:
  - Tasks
  properties:
  - type: OpenAPI
    url: openapi/arch-tasks-api-openapi.yml
  - type: Documentation
    url: https://arch.co/client-api/api-docs/
  - type: APIReference
    url: https://arch.co/client-api/api-docs/
  - type: Authentication
    url: authentication/arch-authentication.yml
  - type: RateLimits
    url: rate-limits/arch-rate-limits.yml
  - type: ErrorCatalog
    url: errors/arch-problem-types.yml
  - type: Conventions
    url: conventions/arch-conventions.yml
  - type: DataModel
    url: data-model/arch-data-model.yml
- aid: arch:arch-tax-documents-api
  name: Arch Tax Documents API
  description: The Tax Documents API from Arch — 4 operation(s) for tax documents.
  humanURL: https://arch.co/client-api/api-docs/
  baseURL: https://arch.co/client-api/v0
  tags:
  - Tax Documents
  properties:
  - type: OpenAPI
    url: openapi/arch-tax-documents-api-openapi.yml
  - type: Documentation
    url: https://arch.co/client-api/api-docs/
  - type: APIReference
    url: https://arch.co/client-api/api-docs/
  - type: Authentication
    url: authentication/arch-authentication.yml
  - type: RateLimits
    url: rate-limits/arch-rate-limits.yml
  - type: ErrorCatalog
    url: errors/arch-problem-types.yml
  - type: Conventions
    url: conventions/arch-conventions.yml
  - type: DataModel
    url: data-model/arch-data-model.yml
- aid: arch:arch-user-roles-api
  name: Arch User Roles API
  description: The User Roles API from Arch — 1 operation(s) for user roles.
  humanURL: https://arch.co/client-api/api-docs/
  baseURL: https://arch.co/client-api/v0
  tags:
  - User Roles
  properties:
  - type: OpenAPI
    url: openapi/arch-user-roles-api-openapi.yml
  - type: Documentation
    url: https://arch.co/client-api/api-docs/
  - type: APIReference
    url: https://arch.co/client-api/api-docs/
  - type: Authentication
    url: authentication/arch-authentication.yml
  - type: RateLimits
    url: rate-limits/arch-rate-limits.yml
  - type: ErrorCatalog
    url: errors/arch-problem-types.yml
  - type: Conventions
    url: conventions/arch-conventions.yml
  - type: DataModel
    url: data-model/arch-data-model.yml
- aid: arch:arch-users-api
  name: Arch Users API
  description: The Users API from Arch — 2 operation(s) for users.
  humanURL: https://arch.co/client-api/api-docs/
  baseURL: https://arch.co/client-api/v0
  tags:
  - Users
  properties:
  - type: OpenAPI
    url: openapi/arch-users-api-openapi.yml
  - type: Documentation
    url: https://arch.co/client-api/api-docs/
  - type: APIReference
    url: https://arch.co/client-api/api-docs/
  - type: Authentication
    url: authentication/arch-authentication.yml
  - type: RateLimits
    url: rate-limits/arch-rate-limits.yml
  - type: ErrorCatalog
    url: errors/arch-problem-types.yml
  - type: Conventions
    url: conventions/arch-conventions.yml
  - type: DataModel
    url: data-model/arch-data-model.yml
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: DomainSecurity
  url: security/arch-domain-security.yml
- type: AgenticAccess
  url: agentic-access/arch-agentic-access.yml
- type: Authentication
  url: authentication/arch-authentication.yml
- type: Lifecycle
  url: lifecycle/arch-lifecycle.yml
- type: Conformance
  url: conformance/arch-conformance.yml
- type: MCPServer
  url: mcp/arch-mcp.yml
- type: LLMsTxt
  url: llms/arch-llms.txt
- type: Overlay
  url: overlays/arch-client-api-overlay.yaml
- type: AgentSkill
  url: skills/_index.yml
- type: TrustCenter
  url: security/arch-trust-center.yml
- type: Website
  url: https://archlabs.com
- type: DeveloperPortal
  url: https://arch.co/client-api/api-docs/
- type: Documentation
  url: https://arch.co/client-api/api-docs/
- type: APIReference
  url: https://arch.co/client-api/api-docs/
- type: GettingStarted
  url: https://arch.co/client-api/api-docs/
- type: Support
  url: https://archlabs.com/contact.html
- type: SignUp
  url: https://archlabs.com/portal
- type: Login
  url: https://archlabs.com/portal/home
- type: TermsOfService
  url: https://arch.co/legal.html
- type: PrivacyPolicy
  url: https://arch.co/legal.html#privacy-policy
- type: Compliance
  url: https://arch.co/legal.html#gdpr-compliance-policy
- type: StatusPage
  url: https://arch-group.gitlab.io/status-page/
x-enrichment:
  date: '2026-07-19'
  status: backfilled
  pass: local-v1
  note: backfilled from .gitignore signal + verified work evidence