Light

Light is an agentic accounting and financial-operations platform positioned as an alternative to traditional ERPs and fragmented finance stacks. It combines a multi-entity general ledger and consolidation engine with accounts payable, accounts receivable, spend management and corporate cards, contracts and subscription billing, purchase orders and expense reimbursement. The Light API is a REST API over HTTPS returning camelCase JSON, covering 183 operations across 28 resource groups — invoice payables and receivables, credit notes, customer credits, journal entries, ledger accounts, bank accounts and transactions, cards and card transactions, contracts, purchase orders, products, vendors, customers and users. Authentication is either an API key sent as HTTP Basic or an OAuth 2.0 access token, access is governed by the same roles as user accounts, and writes on 14 operations accept an X-Idempotency-Key header. Light also publishes a live Model Context Protocol server over its documentation and markets a Claude MCP integration against the live ledger.

Light publishes 28 API contracts indexed on the APIs.io network, including Authorization API, v1 - Accounting Documents API, v1 - Attachments API, and 25 more. Tagged areas include Accounting, Finance, ERP, Accounts Payable, and Accounts Receivable.

Light’s developer surface includes documentation, API reference, getting-started guide, support, engineering blog, signup flow, authentication, and 21 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

44.0/100 developing ▬ flat Agent 35/100 agent ready Front door AI 5/6 prominent saas Full breakdown ↓
scored 2026-10-31 · rubric v0.25.0 · Show this score on your site →

AccessSelf serve

1 published contract 1 MCP Servers 4 Agent Skills

Accounting Finance ERP Accounts Payable Accounts Receivable General Ledger Spend Management Invoicing Corporate Cards Expense Management Financial Operations Agents Company

What this lets a business do 3

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

Financial Management

BC-200

v1 - Credit Notesv1 - Customer Creditsv1 - Invoice Approvalsv1 - Invoice Payablesv1 - Invoice Receivablesv1 - Journal Entries

POST /v1/invoice-payables/{invoicePayableId}/approve POST /v1/invoice-payables POST /v1/invoice-receivables POST /v1/invoice-receivables/{invoiceReceivableId}/payments

Procurement Management

BC-500

v1 - Purchase Orders

POST /v1/purchase-orders/{purchaseOrderId}/close POST /v1/purchase-orders

Treasury Management

BC-210

v1 - Bank Accounts

Kin Score

Kin Score How this is scored →
scored 2026-10-31 · rubric v0.25.0

Composite quality — 44.0/100 · developing

Contract Quality 8.2 / 21

Developer Ergonomics 10.0 / 17

Access Clarity 8.5 / 17

Operational Transparency 2.3 / 11

Contract Governance 1.9 / 10

Discoverability 5.5 / 9

Regulatory Posture 4.0 / 15

Agent readiness — 35/100 · 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 9 / 9

Stable Error Semantics 8 / 8

Request/Response Examples 0 / 7

Rate-Limit Signaling 7 / 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 5 / 5

Distinct Operations 3 / 3

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):

A2A Agent Card +8 pts — a2a/-a2a.yml manifest, graded on conformance.grade against A2A 1.0.0
Request/Response Examples +7 pts — share of operations carrying request/response examples; else an Examples / Code Samples link
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)
Registration Without a Human +6 pts — a `registration_endpoint` in the served RFC 8414 / OIDC discovery document
Typed Event Surface +6 pts — AsyncAPI document, OR webhooks/callbacks objects in the as-published OpenAPI, OR common[].type includes Webhooks
Documented Reversibility +6 pts — a reversal operation in the contract, graded up when a window is documented too

5 more unmet checks in the Agent Readiness table above.

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

Contract Quality scores 38.7 — up to +15.3 composite points
Operational Transparency scores 21.1 — up to +10.3 composite points
Access Clarity scores 50.0 — up to +10.0 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/light/apis.yml: open an issue on github.com/api-evangelist/light 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
Procurement and B2B Buying (source-to-pay suites, spend management)	builds-on	17.2 (thin)	-	-

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.

APIs 28

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

Light Authorization API

The Authorization API from Light — 2 operation(s) for authorization.

Light v1 - Accounting Documents API

The v1 - Accounting Documents API from Light — 1 operation(s) for v1 - accounting documents.

Light v1 - Attachments API

The v1 - Attachments API from Light — 4 operation(s) for v1 - attachments.

Light v1 - Bank Accounts API

The v1 - Bank Accounts API from Light — 4 operation(s) for v1 - bank accounts.

Light v1 - Card Balance Accounts API

The v1 - Card Balance Accounts API from Light — 4 operation(s) for v1 - card balance accounts.

Light v1 - Card Customers API

The v1 - Card Customers API from Light — 1 operation(s) for v1 - card customers.

Light v1 - Card Transactions API

The v1 - Card Transactions API from Light — 9 operation(s) for v1 - card transactions.

Light v1 - Cards API

The v1 - Cards API from Light — 4 operation(s) for v1 - cards.

Light v1 - Companies API

The v1 - Companies API from Light — 1 operation(s) for v1 - companies.

Light v1 - Contracts API

The v1 - Contracts API from Light — 10 operation(s) for v1 - contracts.

Light v1 - Credit Notes API

The v1 - Credit Notes API from Light — 10 operation(s) for v1 - credit notes.

Light v1 - Custom Properties API

The v1 - Custom Properties API from Light — 4 operation(s) for v1 - custom properties.

Light v1 - Customer Credits API

The v1 - Customer Credits API from Light — 12 operation(s) for v1 - customer credits.

Light v1 - Customers API

The v1 - Customers API from Light — 4 operation(s) for v1 - customers.

Light v1 - Entities API

The v1 - Entities API from Light — 1 operation(s) for v1 - entities.

Light v1 - Exchange API

The v1 - Exchange API from Light — 2 operation(s) for v1 - exchange.

Light v1 - Expenses API

The v1 - Expenses API from Light — 8 operation(s) for v1 - expenses.

Light v1 - Invoice Approvals API

The v1 - Invoice Approvals API from Light — 1 operation(s) for v1 - invoice approvals.

Light v1 - Invoice Payables API

The v1 - Invoice Payables API from Light — 17 operation(s) for v1 - invoice payables.

Light v1 - Invoice Receivables API

The v1 - Invoice Receivables API from Light — 11 operation(s) for v1 - invoice receivables.

Light v1 - Journal Entries API

The v1 - Journal Entries API from Light — 3 operation(s) for v1 - journal entries.

Light v1 - Ledger accounts API

The v1 - Ledger accounts API from Light — 1 operation(s) for v1 - ledger accounts.

Light v1 - Ledger Transactions API

The v1 - Ledger Transactions API from Light — 1 operation(s) for v1 - ledger transactions.

Light v1 - Products API

The v1 - Products API from Light — 3 operation(s) for v1 - products.

Light v1 - Purchase Orders API

The v1 - Purchase Orders API from Light — 9 operation(s) for v1 - purchase orders.

Light v1 - User Comments API

The v1 - User Comments API from Light — 2 operation(s) for v1 - user comments.

Light v1 - Users API

The v1 - Users API from Light — 5 operation(s) for v1 - users.

Light v1 - Vendors API

The v1 - Vendors API from Light — 2 operation(s) for v1 - vendors.

Scroll for all 28

Open Collections 28

Open, tool-agnostic API collections (OpenAPI-derived and Bruno).

Light Authorization API

OPEN COLLECTION

Light Authorization v1 - Accounting Documents API

OPEN COLLECTION

Light Authorization v1 - Attachments API

OPEN COLLECTION

Light Authorization v1 - Bank Accounts API

OPEN COLLECTION

Light Authorization v1 - Card Balance Accounts API

OPEN COLLECTION

Light Authorization v1 - Card Customers API

OPEN COLLECTION

Light Authorization v1 - Card Transactions API

OPEN COLLECTION

Light Authorization v1 - Cards API

OPEN COLLECTION

Light Authorization v1 - Companies API

OPEN COLLECTION

Light Authorization v1 - Contracts API

OPEN COLLECTION

Light Authorization v1 - Credit Notes API

OPEN COLLECTION

Light Authorization v1 - Custom Properties API

OPEN COLLECTION

Light Authorization v1 - Customer Credits API

OPEN COLLECTION

Light Authorization v1 - Customers API

OPEN COLLECTION

Light Authorization v1 - Entities API

OPEN COLLECTION

Light Authorization v1 - Exchange API

OPEN COLLECTION

Light Authorization v1 - Expenses API

OPEN COLLECTION

Light Authorization v1 - Invoice Approvals API

OPEN COLLECTION

Light Authorization v1 - Invoice Payables API

OPEN COLLECTION

Light Authorization v1 - Invoice Receivables API

OPEN COLLECTION

Light Authorization v1 - Journal Entries API

OPEN COLLECTION

Light Authorization v1 - Ledger accounts API

OPEN COLLECTION

Light Authorization v1 - Ledger Transactions API

OPEN COLLECTION

Light Authorization v1 - Products API

OPEN COLLECTION

Light Authorization v1 - Purchase Orders API

OPEN COLLECTION

Light Authorization v1 - User Comments API

OPEN COLLECTION

Light Authorization v1 - Users API

OPEN COLLECTION

Light Authorization v1 - Vendors API

OPEN COLLECTION

Scroll for all 28

MCP Servers 1

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

Light API documentation

Remote MCP server at docs.light.inc over HTTP; 3 tools listed.

MCP SERVER

Agent Skills 4

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

Record and pay a vendor bill in Light

AGENT SKILL

Invoice a customer and collect cash in Light

AGENT SKILL

Post journal entries and reconcile the ledger in Light

AGENT SKILL

Manage cards, card spend and expense reimbursement in Light

AGENT SKILL

Rate Limits 1

Documented rate limits and quota policies.

Light Rate Limits

2 limits

RATE LIMITS

OpenAPI Overlays 1

Overlays applied on top of this provider's contracts. Each card says who wrote it: a document the provider publishes, or one API Evangelist derived or generated.

Light Openapi Overlay

5 actions · servers · light-openapi-original.json

DERIVED

Security Posture 3

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

Light Authentication

apiKey/http/oauth2 · 3 schemes

SECURITY

Light Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Light Trust Center

SOC 2 Type II, SOC 1 Type II, SOX / Sarbanes-Oxley compliance

SECURITY

Agentic Access 1

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

Light Agentic Access

183 operations · 120 acting · 5 human-in-the-loop

183 operations · 120 acting

AGENTIC

Resources

Get Started 4

Portal, sign-up, and the first successful call

DeveloperPortal

DeveloperPortal

GettingStarted

GettingStarted

SignUp

SignUp

Login

Documentation 2

Reference material describing how the API behaves

Documentation

Documentation

APIReference

APIReference

Agent Surfaces 4

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess

MCPServer

LLMsTxt

AgentSkill

Design & Contract 6

Pagination, idempotency, versioning, errors, and events

Conventions

Idempotency

ErrorCatalog

Lifecycle

Conformance

DataModel

Access & Security 4

Authentication, authorization, and security posture

Compliance

TrustCenter

DomainSecurity

Authentication

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 2

Properties that don't map to a standard resource type

CapabilityMap

CapabilityMap

Overlay

Overlay

Source (apis.yml)

aid: light
name: Light
description: Light is an agentic accounting and financial-operations platform positioned as an alternative to traditional
  ERPs and fragmented finance stacks. It combines a multi-entity general ledger and consolidation engine with accounts payable,
  accounts receivable, spend management and corporate cards, contracts and subscription billing, purchase orders and expense
  reimbursement. The Light API is a REST API over HTTPS returning camelCase JSON, covering 183 operations across 28 resource
  groups — invoice payables and receivables, credit notes, customer credits, journal entries, ledger accounts, bank accounts
  and transactions, cards and card transactions, contracts, purchase orders, products, vendors, customers and users. Authentication
  is either an API key sent as HTTP Basic or an OAuth 2.0 access token, access is governed by the same roles as user accounts,
  and writes on 14 operations accept an X-Idempotency-Key header. Light also publishes a live Model Context Protocol server
  over its documentation and markets a Claude MCP integration against the live ledger.
deliveryModel:
  model: saas
  open_source: false
  commercial: true
  callable_host: true
  label: Hosted service · you call their endpoint
  confidence: high
  source:
  - openapi
  - pricing
  generated: '2026-08-28'
  method: derived
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://light.inc/assets/images/og-home.jpg
url: https://raw.githubusercontent.com/api-evangelist/light/refs/heads/main/apis.yml
x-type: company
x-source: vc-portfolio
x-backed-by:
- balderton-capital
- seedcamp
x-tier: enriched
x-tier-reason: real-openapi-and-docs
specificationVersion: '0.23'
created: '2026-07-17'
modified: '2026-07-19'
tags:
- Accounting
- Finance
- ERP
- Accounts Payable
- Accounts Receivable
- General Ledger
- Spend Management
- Invoicing
- Corporate Cards
- Expense Management
- Financial Operations
- Agents
- Company
apis:
- aid: light:light-authorization-api
  name: Light Authorization API
  description: The Authorization API from Light — 2 operation(s) for authorization.
  humanURL: https://docs.light.inc/getting-started/introduction
  baseURL: https://api.light.inc
  tags:
  - Authorization
  properties:
  - type: OpenAPI
    url: openapi/light-authorization-api-openapi.yml
  - type: Documentation
    url: https://docs.light.inc/getting-started/introduction
  - type: Authentication
    url: https://docs.light.inc/getting-started/authentication
  - type: RateLimits
    url: https://docs.light.inc/getting-started/rate-limits
- aid: light:light-v1-accounting-documents-api
  name: Light v1 - Accounting Documents API
  description: The v1 - Accounting Documents API from Light — 1 operation(s) for v1 - accounting documents.
  humanURL: https://docs.light.inc/getting-started/introduction
  baseURL: https://api.light.inc
  tags:
  - v1 - Accounting Documents
  properties:
  - type: OpenAPI
    url: openapi/light-v1-accounting-documents-api-openapi.yml
  - type: Documentation
    url: https://docs.light.inc/getting-started/introduction
  - type: Authentication
    url: https://docs.light.inc/getting-started/authentication
  - type: RateLimits
    url: https://docs.light.inc/getting-started/rate-limits
- aid: light:light-v1-attachments-api
  name: Light v1 - Attachments API
  description: The v1 - Attachments API from Light — 4 operation(s) for v1 - attachments.
  humanURL: https://docs.light.inc/getting-started/introduction
  baseURL: https://api.light.inc
  tags:
  - v1 - Attachments
  properties:
  - type: OpenAPI
    url: openapi/light-v1-attachments-api-openapi.yml
  - type: Documentation
    url: https://docs.light.inc/getting-started/introduction
  - type: Authentication
    url: https://docs.light.inc/getting-started/authentication
  - type: RateLimits
    url: https://docs.light.inc/getting-started/rate-limits
- aid: light:light-v1-bank-accounts-api
  name: Light v1 - Bank Accounts API
  description: The v1 - Bank Accounts API from Light — 4 operation(s) for v1 - bank accounts.
  humanURL: https://docs.light.inc/getting-started/introduction
  baseURL: https://api.light.inc
  tags:
  - v1 - Bank Accounts
  properties:
  - type: OpenAPI
    url: openapi/light-v1-bank-accounts-api-openapi.yml
  - type: Documentation
    url: https://docs.light.inc/getting-started/introduction
  - type: Authentication
    url: https://docs.light.inc/getting-started/authentication
  - type: RateLimits
    url: https://docs.light.inc/getting-started/rate-limits
- aid: light:light-v1-card-balance-accounts-api
  name: Light v1 - Card Balance Accounts API
  description: The v1 - Card Balance Accounts API from Light — 4 operation(s) for v1 - card balance accounts.
  humanURL: https://docs.light.inc/getting-started/introduction
  baseURL: https://api.light.inc
  tags:
  - v1 - Card Balance Accounts
  properties:
  - type: OpenAPI
    url: openapi/light-v1-card-balance-accounts-api-openapi.yml
  - type: Documentation
    url: https://docs.light.inc/getting-started/introduction
  - type: Authentication
    url: https://docs.light.inc/getting-started/authentication
  - type: RateLimits
    url: https://docs.light.inc/getting-started/rate-limits
- aid: light:light-v1-card-customers-api
  name: Light v1 - Card Customers API
  description: The v1 - Card Customers API from Light — 1 operation(s) for v1 - card customers.
  humanURL: https://docs.light.inc/getting-started/introduction
  baseURL: https://api.light.inc
  tags:
  - v1 - Card Customers
  properties:
  - type: OpenAPI
    url: openapi/light-v1-card-customers-api-openapi.yml
  - type: Documentation
    url: https://docs.light.inc/getting-started/introduction
  - type: Authentication
    url: https://docs.light.inc/getting-started/authentication
  - type: RateLimits
    url: https://docs.light.inc/getting-started/rate-limits
- aid: light:light-v1-card-transactions-api
  name: Light v1 - Card Transactions API
  description: The v1 - Card Transactions API from Light — 9 operation(s) for v1 - card transactions.
  humanURL: https://docs.light.inc/getting-started/introduction
  baseURL: https://api.light.inc
  tags:
  - v1 - Card Transactions
  properties:
  - type: OpenAPI
    url: openapi/light-v1-card-transactions-api-openapi.yml
  - type: Documentation
    url: https://docs.light.inc/getting-started/introduction
  - type: Authentication
    url: https://docs.light.inc/getting-started/authentication
  - type: RateLimits
    url: https://docs.light.inc/getting-started/rate-limits
- aid: light:light-v1-cards-api
  name: Light v1 - Cards API
  description: The v1 - Cards API from Light — 4 operation(s) for v1 - cards.
  humanURL: https://docs.light.inc/getting-started/introduction
  baseURL: https://api.light.inc
  tags:
  - v1 - Cards
  properties:
  - type: OpenAPI
    url: openapi/light-v1-cards-api-openapi.yml
  - type: Documentation
    url: https://docs.light.inc/getting-started/introduction
  - type: Authentication
    url: https://docs.light.inc/getting-started/authentication
  - type: RateLimits
    url: https://docs.light.inc/getting-started/rate-limits
- aid: light:light-v1-companies-api
  name: Light v1 - Companies API
  description: The v1 - Companies API from Light — 1 operation(s) for v1 - companies.
  humanURL: https://docs.light.inc/getting-started/introduction
  baseURL: https://api.light.inc
  tags:
  - v1 - Companies
  properties:
  - type: OpenAPI
    url: openapi/light-v1-companies-api-openapi.yml
  - type: Documentation
    url: https://docs.light.inc/getting-started/introduction
  - type: Authentication
    url: https://docs.light.inc/getting-started/authentication
  - type: RateLimits
    url: https://docs.light.inc/getting-started/rate-limits
- aid: light:light-v1-contracts-api
  name: Light v1 - Contracts API
  description: The v1 - Contracts API from Light — 10 operation(s) for v1 - contracts.
  humanURL: https://docs.light.inc/getting-started/introduction
  baseURL: https://api.light.inc
  tags:
  - v1 - Contracts
  properties:
  - type: OpenAPI
    url: openapi/light-v1-contracts-api-openapi.yml
  - type: Documentation
    url: https://docs.light.inc/getting-started/introduction
  - type: Authentication
    url: https://docs.light.inc/getting-started/authentication
  - type: RateLimits
    url: https://docs.light.inc/getting-started/rate-limits
- aid: light:light-v1-credit-notes-api
  name: Light v1 - Credit Notes API
  description: The v1 - Credit Notes API from Light — 10 operation(s) for v1 - credit notes.
  humanURL: https://docs.light.inc/getting-started/introduction
  baseURL: https://api.light.inc
  tags:
  - v1 - Credit Notes
  properties:
  - type: OpenAPI
    url: openapi/light-v1-credit-notes-api-openapi.yml
  - type: Documentation
    url: https://docs.light.inc/getting-started/introduction
  - type: Authentication
    url: https://docs.light.inc/getting-started/authentication
  - type: RateLimits
    url: https://docs.light.inc/getting-started/rate-limits
- aid: light:light-v1-custom-properties-api
  name: Light v1 - Custom Properties API
  description: The v1 - Custom Properties API from Light — 4 operation(s) for v1 - custom properties.
  humanURL: https://docs.light.inc/getting-started/introduction
  baseURL: https://api.light.inc
  tags:
  - v1 - Custom Properties
  properties:
  - type: OpenAPI
    url: openapi/light-v1-custom-properties-api-openapi.yml
  - type: Documentation
    url: https://docs.light.inc/getting-started/introduction
  - type: Authentication
    url: https://docs.light.inc/getting-started/authentication
  - type: RateLimits
    url: https://docs.light.inc/getting-started/rate-limits
- aid: light:light-v1-customer-credits-api
  name: Light v1 - Customer Credits API
  description: The v1 - Customer Credits API from Light — 12 operation(s) for v1 - customer credits.
  humanURL: https://docs.light.inc/getting-started/introduction
  baseURL: https://api.light.inc
  tags:
  - v1 - Customer Credits
  properties:
  - type: OpenAPI
    url: openapi/light-v1-customer-credits-api-openapi.yml
  - type: Documentation
    url: https://docs.light.inc/getting-started/introduction
  - type: Authentication
    url: https://docs.light.inc/getting-started/authentication
  - type: RateLimits
    url: https://docs.light.inc/getting-started/rate-limits
- aid: light:light-v1-customers-api
  name: Light v1 - Customers API
  description: The v1 - Customers API from Light — 4 operation(s) for v1 - customers.
  humanURL: https://docs.light.inc/getting-started/introduction
  baseURL: https://api.light.inc
  tags:
  - v1 - Customers
  properties:
  - type: OpenAPI
    url: openapi/light-v1-customers-api-openapi.yml
  - type: Documentation
    url: https://docs.light.inc/getting-started/introduction
  - type: Authentication
    url: https://docs.light.inc/getting-started/authentication
  - type: RateLimits
    url: https://docs.light.inc/getting-started/rate-limits
- aid: light:light-v1-entities-api
  name: Light v1 - Entities API
  description: The v1 - Entities API from Light — 1 operation(s) for v1 - entities.
  humanURL: https://docs.light.inc/getting-started/introduction
  baseURL: https://api.light.inc
  tags:
  - v1 - Entities
  properties:
  - type: OpenAPI
    url: openapi/light-v1-entities-api-openapi.yml
  - type: Documentation
    url: https://docs.light.inc/getting-started/introduction
  - type: Authentication
    url: https://docs.light.inc/getting-started/authentication
  - type: RateLimits
    url: https://docs.light.inc/getting-started/rate-limits
- aid: light:light-v1-exchange-api
  name: Light v1 - Exchange API
  description: The v1 - Exchange API from Light — 2 operation(s) for v1 - exchange.
  humanURL: https://docs.light.inc/getting-started/introduction
  baseURL: https://api.light.inc
  tags:
  - v1 - Exchange
  properties:
  - type: OpenAPI
    url: openapi/light-v1-exchange-api-openapi.yml
  - type: Documentation
    url: https://docs.light.inc/getting-started/introduction
  - type: Authentication
    url: https://docs.light.inc/getting-started/authentication
  - type: RateLimits
    url: https://docs.light.inc/getting-started/rate-limits
- aid: light:light-v1-expenses-api
  name: Light v1 - Expenses API
  description: The v1 - Expenses API from Light — 8 operation(s) for v1 - expenses.
  humanURL: https://docs.light.inc/getting-started/introduction
  baseURL: https://api.light.inc
  tags:
  - v1 - Expenses
  properties:
  - type: OpenAPI
    url: openapi/light-v1-expenses-api-openapi.yml
  - type: Documentation
    url: https://docs.light.inc/getting-started/introduction
  - type: Authentication
    url: https://docs.light.inc/getting-started/authentication
  - type: RateLimits
    url: https://docs.light.inc/getting-started/rate-limits
- aid: light:light-v1-invoice-approvals-api
  name: Light v1 - Invoice Approvals API
  description: The v1 - Invoice Approvals API from Light — 1 operation(s) for v1 - invoice approvals.
  humanURL: https://docs.light.inc/getting-started/introduction
  baseURL: https://api.light.inc
  tags:
  - v1 - Invoice Approvals
  properties:
  - type: OpenAPI
    url: openapi/light-v1-invoice-approvals-api-openapi.yml
  - type: Documentation
    url: https://docs.light.inc/getting-started/introduction
  - type: Authentication
    url: https://docs.light.inc/getting-started/authentication
  - type: RateLimits
    url: https://docs.light.inc/getting-started/rate-limits
- aid: light:light-v1-invoice-payables-api
  name: Light v1 - Invoice Payables API
  description: The v1 - Invoice Payables API from Light — 17 operation(s) for v1 - invoice payables.
  humanURL: https://docs.light.inc/getting-started/introduction
  baseURL: https://api.light.inc
  tags:
  - v1 - Invoice Payables
  properties:
  - type: OpenAPI
    url: openapi/light-v1-invoice-payables-api-openapi.yml
  - type: Documentation
    url: https://docs.light.inc/getting-started/introduction
  - type: Authentication
    url: https://docs.light.inc/getting-started/authentication
  - type: RateLimits
    url: https://docs.light.inc/getting-started/rate-limits
- aid: light:light-v1-invoice-receivables-api
  name: Light v1 - Invoice Receivables API
  description: The v1 - Invoice Receivables API from Light — 11 operation(s) for v1 - invoice receivables.
  humanURL: https://docs.light.inc/getting-started/introduction
  baseURL: https://api.light.inc
  tags:
  - v1 - Invoice Receivables
  properties:
  - type: OpenAPI
    url: openapi/light-v1-invoice-receivables-api-openapi.yml
  - type: Documentation
    url: https://docs.light.inc/getting-started/introduction
  - type: Authentication
    url: https://docs.light.inc/getting-started/authentication
  - type: RateLimits
    url: https://docs.light.inc/getting-started/rate-limits
- aid: light:light-v1-journal-entries-api
  name: Light v1 - Journal Entries API
  description: The v1 - Journal Entries API from Light — 3 operation(s) for v1 - journal entries.
  humanURL: https://docs.light.inc/getting-started/introduction
  baseURL: https://api.light.inc
  tags:
  - v1 - Journal Entries
  properties:
  - type: OpenAPI
    url: openapi/light-v1-journal-entries-api-openapi.yml
  - type: Documentation
    url: https://docs.light.inc/getting-started/introduction
  - type: Authentication
    url: https://docs.light.inc/getting-started/authentication
  - type: RateLimits
    url: https://docs.light.inc/getting-started/rate-limits
- aid: light:light-v1-ledger-accounts-api
  name: Light v1 - Ledger accounts API
  description: The v1 - Ledger accounts API from Light — 1 operation(s) for v1 - ledger accounts.
  humanURL: https://docs.light.inc/getting-started/introduction
  baseURL: https://api.light.inc
  tags:
  - v1 - Ledger accounts
  properties:
  - type: OpenAPI
    url: openapi/light-v1-ledger-accounts-api-openapi.yml
  - type: Documentation
    url: https://docs.light.inc/getting-started/introduction
  - type: Authentication
    url: https://docs.light.inc/getting-started/authentication
  - type: RateLimits
    url: https://docs.light.inc/getting-started/rate-limits
- aid: light:light-v1-ledger-transactions-api
  name: Light v1 - Ledger Transactions API
  description: The v1 - Ledger Transactions API from Light — 1 operation(s) for v1 - ledger transactions.
  humanURL: https://docs.light.inc/getting-started/introduction
  baseURL: https://api.light.inc
  tags:
  - v1 - Ledger Transactions
  properties:
  - type: OpenAPI
    url: openapi/light-v1-ledger-transactions-api-openapi.yml
  - type: Documentation
    url: https://docs.light.inc/getting-started/introduction
  - type: Authentication
    url: https://docs.light.inc/getting-started/authentication
  - type: RateLimits
    url: https://docs.light.inc/getting-started/rate-limits
- aid: light:light-v1-products-api
  name: Light v1 - Products API
  description: The v1 - Products API from Light — 3 operation(s) for v1 - products.
  humanURL: https://docs.light.inc/getting-started/introduction
  baseURL: https://api.light.inc
  tags:
  - v1 - Products
  properties:
  - type: OpenAPI
    url: openapi/light-v1-products-api-openapi.yml
  - type: Documentation
    url: https://docs.light.inc/getting-started/introduction
  - type: Authentication
    url: https://docs.light.inc/getting-started/authentication
  - type: RateLimits
    url: https://docs.light.inc/getting-started/rate-limits
- aid: light:light-v1-purchase-orders-api
  name: Light v1 - Purchase Orders API
  description: The v1 - Purchase Orders API from Light — 9 operation(s) for v1 - purchase orders.
  humanURL: https://docs.light.inc/getting-started/introduction
  baseURL: https://api.light.inc
  tags:
  - v1 - Purchase Orders
  properties:
  - type: OpenAPI
    url: openapi/light-v1-purchase-orders-api-openapi.yml
  - type: Documentation
    url: https://docs.light.inc/getting-started/introduction
  - type: Authentication
    url: https://docs.light.inc/getting-started/authentication
  - type: RateLimits
    url: https://docs.light.inc/getting-started/rate-limits
- aid: light:light-v1-user-comments-api
  name: Light v1 - User Comments API
  description: The v1 - User Comments API from Light — 2 operation(s) for v1 - user comments.
  humanURL: https://docs.light.inc/getting-started/introduction
  baseURL: https://api.light.inc
  tags:
  - v1 - User Comments
  properties:
  - type: OpenAPI
    url: openapi/light-v1-user-comments-api-openapi.yml
  - type: Documentation
    url: https://docs.light.inc/getting-started/introduction
  - type: Authentication
    url: https://docs.light.inc/getting-started/authentication
  - type: RateLimits
    url: https://docs.light.inc/getting-started/rate-limits
- aid: light:light-v1-users-api
  name: Light v1 - Users API
  description: The v1 - Users API from Light — 5 operation(s) for v1 - users.
  humanURL: https://docs.light.inc/getting-started/introduction
  baseURL: https://api.light.inc
  tags:
  - v1 - Users
  properties:
  - type: OpenAPI
    url: openapi/light-v1-users-api-openapi.yml
  - type: Documentation
    url: https://docs.light.inc/getting-started/introduction
  - type: Authentication
    url: https://docs.light.inc/getting-started/authentication
  - type: RateLimits
    url: https://docs.light.inc/getting-started/rate-limits
- aid: light:light-v1-vendors-api
  name: Light v1 - Vendors API
  description: The v1 - Vendors API from Light — 2 operation(s) for v1 - vendors.
  humanURL: https://docs.light.inc/getting-started/introduction
  baseURL: https://api.light.inc
  tags:
  - v1 - Vendors
  properties:
  - type: OpenAPI
    url: openapi/light-v1-vendors-api-openapi.yml
  - type: Documentation
    url: https://docs.light.inc/getting-started/introduction
  - type: Authentication
    url: https://docs.light.inc/getting-started/authentication
  - type: RateLimits
    url: https://docs.light.inc/getting-started/rate-limits
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: CapabilityMap
  url: capabilities/light-capability-edges.yml
  name: Light Business Capability Map
- type: Overlay
  url: overlays/light-openapi-overlay.yaml
- type: AgenticAccess
  url: agentic-access/light-agentic-access.yml
- type: Website
  url: https://light.inc/
- type: DeveloperPortal
  url: https://docs.light.inc/getting-started/introduction
- type: Documentation
  url: https://docs.light.inc/getting-started/introduction
- type: APIReference
  url: https://docs.light.inc/api-reference/customers/001-overview
- type: GettingStarted
  url: https://docs.light.inc/getting-started/introduction
- type: Support
  url: https://light.inc/help
- type: Blog
  url: https://light.inc/blog
- type: SignUp
  url: https://light.inc/book-a-demo
- type: Login
  url: https://app.light.inc/
- type: TermsOfService
  url: https://light.inc/terms
- type: PrivacyPolicy
  url: https://light.inc/privacy
- type: Compliance
  url: https://light.inc/soc-2
- type: TrustCenter
  url: security/light-trust-center.yml
- type: DomainSecurity
  url: security/light-domain-security.yml
- type: Authentication
  url: authentication/light-authentication.yml
- type: Conventions
  url: conventions/light-conventions.yml
- type: Idempotency
  url: conventions/light-conventions.yml
- type: ErrorCatalog
  url: errors/light-problem-types.yml
- type: RateLimits
  url: rate-limits/light-rate-limits.yml
- type: Lifecycle
  url: lifecycle/light-lifecycle.yml
- type: Conformance
  url: conformance/light-conformance.yml
- type: DataModel
  url: data-model/light-data-model.yml
- type: MCPServer
  url: mcp/light-mcp.yml
- type: LLMsTxt
  url: llms/light-llms.txt
- type: AgentSkill
  url: skills/_index.yml
x-enrichment:
  date: '2026-07-19'
  status: backfilled
  pass: local-v1
  note: backfilled from .gitignore signal + verified work evidence

Light API — frequently asked questions

Does Light have an API?

Yes. APIs.io lists 28 APIs from Light, including Light Authorization API, Light v1 - Accounting Documents API and Light v1 - Attachments API, and 25 more.

Is there an OpenAPI specification for the Light API?

Yes. APIs.io indexes 28 OpenAPI specifications for Light, each linked for download from this page.

How do I authenticate with the Light API?

Light uses bearer-token authentication (apiKey/http/oauth2 · 3 schemes). The details are profiled on APIs.io as Light Authentication.

Does Light have an MCP server?

Yes. APIs.io lists 1 MCP server for Light: Remote MCP server at docs.light.inc over HTTP; 3 tools listed.

Is the Light API ready for AI agents?

Light has a Kin Score of 44.0 out of 100 (developing) and an Agent Readiness score of 34.9 (agent-ready), scored by API Evangelist on 2026-10-31.

Work with this as data

Every provider here is available over the APIs.io API and to AI agents over MCP.

MCP server

One button, every client — Claude, Cursor, VS Code and the rest.

https://apis.io/mcp

Tools for providers

9 MCP tools reach this

find_providersBrowse and filter every provider in the catalog.
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.

All 92 tools →

Call it yourself

curl for this page

This provider

curl "https://apis.io/api/v1/providers/light"

All providers

curl "https://apis.io/api/v1/providers?limit=25"

Every operation they expose

curl "https://apis.io/api/v1/providers/light/operations?limit=25"

How their score was established

curl "https://apis.io/api/v1/providers/light/evidence"

Discovery needs no key. Ratings and market analysis are Pro.

Get an API key

Free tier, no form to fill in. Signing in shares your email address with us — we store it to create your key and to recognise you if you sign in with another provider. See our Privacy Policy and Terms.

GitHub Google LinkedIn

A second provider on the same verified email joins the account you already have.