Hyperline

Hyperline is a usage-based billing and subscription platform that helps B2B SaaS companies manage their entire quote-to-cash workflow. Its REST API covers customers, a product and plan catalog, subscriptions, real-time usage and event ingestion, invoicing, payments, credit notes, and webhooks for hybrid pricing models combining subscription and metered charges.

Hyperline publishes 7 APIs on the APIs.io network, including Billable Events API, Customers API, Invoices API, and 4 more. Tagged areas include Billing, Subscription, Usage-Based, Metering, and Payments.

Hyperline’s developer surface includes authentication, documentation, engineering blog, and 8 more developer resources.

🌐 Visit website 📡 Source on GitHub

36.7/100 thin ▬ flat Agent 30/100 agent ready saas Full breakdown ↓
scored 2026-09-14 · rubric v0.22.0

AccessPaidOpenFree trial⚡ Free to try

1 APIs

Billing Subscription Usage-Based Metering Payments Invoicing FinOps

Kin Score

Kin Score How this is scored →
scored 2026-09-14 · rubric v0.22.0

Composite quality — 36.7/100 · thin

Contract Quality 9.6 / 19

Developer Ergonomics 4.8 / 15

Access Clarity 7.1 / 15

Operational Transparency 2.1 / 10

Contract Governance 0.0 / 9

Discoverability 5.1 / 8

Regulatory Posture 4.0 / 15

Create-or-Update Ergonomics 0.0 / 10

Agent readiness — 30/100 · agent ready

Machine-Readable Contract 18 / 18

Agentic Access Contract 10 / 10

Documented Reversibility 6 / 6

MCP Server 12 / 12

Machine-Readable Auth 10 / 10

Idempotency 0 / 9

Stable Error Semantics 0 / 8

Request/Response Examples 0 / 7

Rate-Limit Signaling 7 / 7

Typed Event Surface 0 / 6

Agent Skills 0 / 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

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/.

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 github.com/api-evangelist/hyperline: open an issue to ask a question, or submit a pull request to add artifacts. Submit an artifact on GitHub — free → Manage your own listing — the Influence plan, $499/mo →

APIs 7

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

Hyperline Billable Events API

The Billable Events API from Hyperline — 2 operation(s) for billable events.

Hyperline Customers API

The Customers API from Hyperline — 5 operation(s) for customers.

Hyperline Invoices API

The Invoices API from Hyperline — 6 operation(s) for invoices.

Hyperline Payments API

The Payments API from Hyperline — 2 operation(s) for payments.

Hyperline Products API

The Products API from Hyperline — 3 operation(s) for products.

Hyperline Subscriptions API

The Subscriptions API from Hyperline — 6 operation(s) for subscriptions.

Hyperline Webhooks API

The Webhooks API from Hyperline — 3 operation(s) for webhooks.

Scroll for all 7

Open Collections 9

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

API Collection

OPEN COLLECTION

Hyperline Billable Events API

OPEN COLLECTION

Hyperline Billable Events Customers API

OPEN COLLECTION

Hyperline Billable Events Invoices API

OPEN COLLECTION

Hyperline Billable Events Payments API

OPEN COLLECTION

Hyperline Billable Events Products API

OPEN COLLECTION

Hyperline Billable Events Subscriptions API

OPEN COLLECTION

Hyperline Billable Events Webhooks API

OPEN COLLECTION

Hyperline API

OPEN COLLECTION

Scroll for all 9

Pricing Plans 1

Published pricing tiers and plan structures.

Hyperline Plans Pricing

3 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Hyperline Rate Limits

2 limits

RATE LIMITS

FinOps 1

Cost, billing, and metering signals for API financial operations.

Hyperline Finops

FINOPS

Security Posture 3

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

Hyperline Authentication

http · 1 scheme

SECURITY

Hyperline Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Hyperline Trust Center

ISO 27001, GDPR

SECURITY

Agentic Access 1

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

Hyperline Agentic Access

42 operations · 27 acting

AGENTIC

Resources

Documentation 1

Reference material describing how the API behaves

Documentation

Documentation

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess

AgenticAccess

Access & Security 3

Authentication, authorization, and security posture

TrustCenter

TrustCenter

DomainSecurity

DomainSecurity

Authentication

Authentication

Operate 1

Status, limits, changes, and where to get help

RateLimits

RateLimits

Commercial 2

Pricing, plans, and the legal terms of use

Plans

Plans

FinOps

FinOps

Company 3

The organization behind the API

LinkedIn

Website

Website

Blog

Blog

Source (apis.yml)

aid: hyperline
url: https://raw.githubusercontent.com/api-evangelist/hyperline/refs/heads/main/apis.yml
name: Hyperline
kind: company
description: Hyperline is a usage-based billing and subscription platform that helps B2B SaaS companies manage their entire
  quote-to-cash workflow. Its REST API covers customers, a product and plan catalog, subscriptions, real-time usage and event
  ingestion, invoicing, payments, credit notes, and webhooks for hybrid pricing models combining subscription and metered
  charges.
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: paid
  onboarding: open
  trial: true
  try_now: true
  public: true
  label: Paid (free trial) · Open access
  confidence: high
  source:
  - plans
  - authentication
  generated: '2026-07-22'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/hyperline.png
tags:
- Billing
- Subscription
- Usage-Based
- Metering
- Payments
- Invoicing
- FinOps
tags_raw:
- Billing
- Subscriptions
- Usage-Based
- Metering
- Payments
- Invoicing
- FinOps
created: '2026-06-20'
modified: '2026-06-20'
specificationVersion: '0.23'
apis:
- aid: hyperline:hyperline-billable-events-api
  name: Hyperline Billable Events API
  description: The Billable Events API from Hyperline — 2 operation(s) for billable events.
  humanURL: https://docs.hyperline.co/api-reference/endpoints/customers
  baseURL: https://api.hyperline.co/v1
  tags:
  - Billable Events
  properties:
  - type: OpenAPI
    url: openapi/hyperline-billable-events-api-openapi.yml
  - type: Documentation
    url: https://docs.hyperline.co/api-reference/docs/getting-started
  - type: APIReference
    url: https://docs.hyperline.co/api-reference/endpoints/customers
  - type: PostmanCollection
    url: collections/hyperline.postman_collection.json
  - type: Documentation
    url: https://docs.hyperline.co/api-reference/endpoints/products
  - type: APIReference
    url: https://docs.hyperline.co/api-reference/endpoints/products
  - type: Documentation
    url: https://docs.hyperline.co/api-reference/endpoints/subscriptions
  - type: APIReference
    url: https://docs.hyperline.co/api-reference/endpoints/subscriptions
  - type: Documentation
    url: https://docs.hyperline.co/api-reference/endpoints/billable-events
  - type: APIReference
    url: https://docs.hyperline.co/api-reference/endpoints/billable-events
  - type: Documentation
    url: https://docs.hyperline.co/api-reference/endpoints/invoices
  - type: APIReference
    url: https://docs.hyperline.co/api-reference/endpoints/invoices
  - type: Documentation
    url: https://docs.hyperline.co/api-reference/endpoints/payments
  - type: APIReference
    url: https://docs.hyperline.co/api-reference/endpoints/payments
  - type: Documentation
    url: https://docs.hyperline.co/api-reference/endpoints/webhooks
  - type: APIReference
    url: https://docs.hyperline.co/api-reference/endpoints/webhooks
- aid: hyperline:hyperline-customers-api
  name: Hyperline Customers API
  description: The Customers API from Hyperline — 5 operation(s) for customers.
  humanURL: https://docs.hyperline.co/api-reference/endpoints/customers
  baseURL: https://api.hyperline.co/v1
  tags:
  - Customers
  properties:
  - type: OpenAPI
    url: openapi/hyperline-customers-api-openapi.yml
  - type: Documentation
    url: https://docs.hyperline.co/api-reference/docs/getting-started
  - type: APIReference
    url: https://docs.hyperline.co/api-reference/endpoints/customers
  - type: PostmanCollection
    url: collections/hyperline.postman_collection.json
  - type: Documentation
    url: https://docs.hyperline.co/api-reference/endpoints/products
  - type: APIReference
    url: https://docs.hyperline.co/api-reference/endpoints/products
  - type: Documentation
    url: https://docs.hyperline.co/api-reference/endpoints/subscriptions
  - type: APIReference
    url: https://docs.hyperline.co/api-reference/endpoints/subscriptions
  - type: Documentation
    url: https://docs.hyperline.co/api-reference/endpoints/billable-events
  - type: APIReference
    url: https://docs.hyperline.co/api-reference/endpoints/billable-events
  - type: Documentation
    url: https://docs.hyperline.co/api-reference/endpoints/invoices
  - type: APIReference
    url: https://docs.hyperline.co/api-reference/endpoints/invoices
  - type: Documentation
    url: https://docs.hyperline.co/api-reference/endpoints/payments
  - type: APIReference
    url: https://docs.hyperline.co/api-reference/endpoints/payments
  - type: Documentation
    url: https://docs.hyperline.co/api-reference/endpoints/webhooks
  - type: APIReference
    url: https://docs.hyperline.co/api-reference/endpoints/webhooks
- aid: hyperline:hyperline-invoices-api
  name: Hyperline Invoices API
  description: The Invoices API from Hyperline — 6 operation(s) for invoices.
  humanURL: https://docs.hyperline.co/api-reference/endpoints/customers
  baseURL: https://api.hyperline.co/v1
  tags:
  - Invoices
  properties:
  - type: OpenAPI
    url: openapi/hyperline-invoices-api-openapi.yml
  - type: Documentation
    url: https://docs.hyperline.co/api-reference/docs/getting-started
  - type: APIReference
    url: https://docs.hyperline.co/api-reference/endpoints/customers
  - type: PostmanCollection
    url: collections/hyperline.postman_collection.json
  - type: Documentation
    url: https://docs.hyperline.co/api-reference/endpoints/products
  - type: APIReference
    url: https://docs.hyperline.co/api-reference/endpoints/products
  - type: Documentation
    url: https://docs.hyperline.co/api-reference/endpoints/subscriptions
  - type: APIReference
    url: https://docs.hyperline.co/api-reference/endpoints/subscriptions
  - type: Documentation
    url: https://docs.hyperline.co/api-reference/endpoints/billable-events
  - type: APIReference
    url: https://docs.hyperline.co/api-reference/endpoints/billable-events
  - type: Documentation
    url: https://docs.hyperline.co/api-reference/endpoints/invoices
  - type: APIReference
    url: https://docs.hyperline.co/api-reference/endpoints/invoices
  - type: Documentation
    url: https://docs.hyperline.co/api-reference/endpoints/payments
  - type: APIReference
    url: https://docs.hyperline.co/api-reference/endpoints/payments
  - type: Documentation
    url: https://docs.hyperline.co/api-reference/endpoints/webhooks
  - type: APIReference
    url: https://docs.hyperline.co/api-reference/endpoints/webhooks
- aid: hyperline:hyperline-payments-api
  name: Hyperline Payments API
  description: The Payments API from Hyperline — 2 operation(s) for payments.
  humanURL: https://docs.hyperline.co/api-reference/endpoints/customers
  baseURL: https://api.hyperline.co/v1
  tags:
  - Payments
  properties:
  - type: OpenAPI
    url: openapi/hyperline-payments-api-openapi.yml
  - type: Documentation
    url: https://docs.hyperline.co/api-reference/docs/getting-started
  - type: APIReference
    url: https://docs.hyperline.co/api-reference/endpoints/customers
  - type: PostmanCollection
    url: collections/hyperline.postman_collection.json
  - type: Documentation
    url: https://docs.hyperline.co/api-reference/endpoints/products
  - type: APIReference
    url: https://docs.hyperline.co/api-reference/endpoints/products
  - type: Documentation
    url: https://docs.hyperline.co/api-reference/endpoints/subscriptions
  - type: APIReference
    url: https://docs.hyperline.co/api-reference/endpoints/subscriptions
  - type: Documentation
    url: https://docs.hyperline.co/api-reference/endpoints/billable-events
  - type: APIReference
    url: https://docs.hyperline.co/api-reference/endpoints/billable-events
  - type: Documentation
    url: https://docs.hyperline.co/api-reference/endpoints/invoices
  - type: APIReference
    url: https://docs.hyperline.co/api-reference/endpoints/invoices
  - type: Documentation
    url: https://docs.hyperline.co/api-reference/endpoints/payments
  - type: APIReference
    url: https://docs.hyperline.co/api-reference/endpoints/payments
  - type: Documentation
    url: https://docs.hyperline.co/api-reference/endpoints/webhooks
  - type: APIReference
    url: https://docs.hyperline.co/api-reference/endpoints/webhooks
- aid: hyperline:hyperline-products-api
  name: Hyperline Products API
  description: The Products API from Hyperline — 3 operation(s) for products.
  humanURL: https://docs.hyperline.co/api-reference/endpoints/customers
  baseURL: https://api.hyperline.co/v1
  tags:
  - Product
  tags_raw:
  - Products
  properties:
  - type: OpenAPI
    url: openapi/hyperline-products-api-openapi.yml
  - type: Documentation
    url: https://docs.hyperline.co/api-reference/docs/getting-started
  - type: APIReference
    url: https://docs.hyperline.co/api-reference/endpoints/customers
  - type: PostmanCollection
    url: collections/hyperline.postman_collection.json
  - type: Documentation
    url: https://docs.hyperline.co/api-reference/endpoints/products
  - type: APIReference
    url: https://docs.hyperline.co/api-reference/endpoints/products
  - type: Documentation
    url: https://docs.hyperline.co/api-reference/endpoints/subscriptions
  - type: APIReference
    url: https://docs.hyperline.co/api-reference/endpoints/subscriptions
  - type: Documentation
    url: https://docs.hyperline.co/api-reference/endpoints/billable-events
  - type: APIReference
    url: https://docs.hyperline.co/api-reference/endpoints/billable-events
  - type: Documentation
    url: https://docs.hyperline.co/api-reference/endpoints/invoices
  - type: APIReference
    url: https://docs.hyperline.co/api-reference/endpoints/invoices
  - type: Documentation
    url: https://docs.hyperline.co/api-reference/endpoints/payments
  - type: APIReference
    url: https://docs.hyperline.co/api-reference/endpoints/payments
  - type: Documentation
    url: https://docs.hyperline.co/api-reference/endpoints/webhooks
  - type: APIReference
    url: https://docs.hyperline.co/api-reference/endpoints/webhooks
- aid: hyperline:hyperline-subscriptions-api
  name: Hyperline Subscriptions API
  description: The Subscriptions API from Hyperline — 6 operation(s) for subscriptions.
  humanURL: https://docs.hyperline.co/api-reference/endpoints/customers
  baseURL: https://api.hyperline.co/v1
  tags:
  - Subscription
  tags_raw:
  - Subscriptions
  properties:
  - type: OpenAPI
    url: openapi/hyperline-subscriptions-api-openapi.yml
  - type: Documentation
    url: https://docs.hyperline.co/api-reference/docs/getting-started
  - type: APIReference
    url: https://docs.hyperline.co/api-reference/endpoints/customers
  - type: PostmanCollection
    url: collections/hyperline.postman_collection.json
  - type: Documentation
    url: https://docs.hyperline.co/api-reference/endpoints/products
  - type: APIReference
    url: https://docs.hyperline.co/api-reference/endpoints/products
  - type: Documentation
    url: https://docs.hyperline.co/api-reference/endpoints/subscriptions
  - type: APIReference
    url: https://docs.hyperline.co/api-reference/endpoints/subscriptions
  - type: Documentation
    url: https://docs.hyperline.co/api-reference/endpoints/billable-events
  - type: APIReference
    url: https://docs.hyperline.co/api-reference/endpoints/billable-events
  - type: Documentation
    url: https://docs.hyperline.co/api-reference/endpoints/invoices
  - type: APIReference
    url: https://docs.hyperline.co/api-reference/endpoints/invoices
  - type: Documentation
    url: https://docs.hyperline.co/api-reference/endpoints/payments
  - type: APIReference
    url: https://docs.hyperline.co/api-reference/endpoints/payments
  - type: Documentation
    url: https://docs.hyperline.co/api-reference/endpoints/webhooks
  - type: APIReference
    url: https://docs.hyperline.co/api-reference/endpoints/webhooks
- aid: hyperline:hyperline-webhooks-api
  name: Hyperline Webhooks API
  description: The Webhooks API from Hyperline — 3 operation(s) for webhooks.
  humanURL: https://docs.hyperline.co/api-reference/endpoints/customers
  baseURL: https://api.hyperline.co/v1
  tags:
  - Webhook
  tags_raw:
  - Webhooks
  properties:
  - type: OpenAPI
    url: openapi/hyperline-webhooks-api-openapi.yml
  - type: Documentation
    url: https://docs.hyperline.co/api-reference/docs/getting-started
  - type: APIReference
    url: https://docs.hyperline.co/api-reference/endpoints/customers
  - type: PostmanCollection
    url: collections/hyperline.postman_collection.json
  - type: Documentation
    url: https://docs.hyperline.co/api-reference/endpoints/products
  - type: APIReference
    url: https://docs.hyperline.co/api-reference/endpoints/products
  - type: Documentation
    url: https://docs.hyperline.co/api-reference/endpoints/subscriptions
  - type: APIReference
    url: https://docs.hyperline.co/api-reference/endpoints/subscriptions
  - type: Documentation
    url: https://docs.hyperline.co/api-reference/endpoints/billable-events
  - type: APIReference
    url: https://docs.hyperline.co/api-reference/endpoints/billable-events
  - type: Documentation
    url: https://docs.hyperline.co/api-reference/endpoints/invoices
  - type: APIReference
    url: https://docs.hyperline.co/api-reference/endpoints/invoices
  - type: Documentation
    url: https://docs.hyperline.co/api-reference/endpoints/payments
  - type: APIReference
    url: https://docs.hyperline.co/api-reference/endpoints/payments
  - type: Documentation
    url: https://docs.hyperline.co/api-reference/endpoints/webhooks
  - type: APIReference
    url: https://docs.hyperline.co/api-reference/endpoints/webhooks
common:
- type: AgenticAccess
  url: agentic-access/hyperline-agentic-access.yml
- type: TrustCenter
  url: security/hyperline-trust-center.yml
- type: DomainSecurity
  url: security/hyperline-domain-security.yml
- type: Authentication
  url: authentication/hyperline-authentication.yml
- type: LinkedIn
  url: https://www.linkedin.com/company/hyperline
- type: Website
  url: https://www.hyperline.co
- type: Documentation
  url: https://docs.hyperline.co
- type: Plans
  url: plans/hyperline-plans-pricing.yml
- type: RateLimits
  url: rate-limits/hyperline-rate-limits.yml
- type: FinOps
  url: finops/hyperline-finops.yml
- url: https://hyperline.co/resources/blog
  type: Blog
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com

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