Headnote

Headnote is a legal payments and accounts-receivable platform built specifically for law firms. Founded in 2016 by attorney Sarah Schaaf, it lets firms accept trust-compliant credit card and eCheck (ACH) payments via shareable payment links and a hosted client payment portal, then automates collections, AR tracking, and client NPS/satisfaction reporting. Headnote is designed to be 100% compliant with IOLTA rules, the ABA Model Rules of Professional Conduct, and lawyer trust/operating account requirements across all 50 states, and integrates with existing billing and practice-management software by attaching a Headnote payment link to invoices. Card and bank data are tokenized with Stripe and Plaid and the platform runs on AWS with PCI-compliant, encrypted-at-rest-and-in-transit infrastructure. Headnote was acquired by ASG LegalTech (an Alpine Investors platform, alongside PracticePanther, Bill4Time, and MerusCase) in 2020. It was surfaced in the API Evangelist network as a portfolio company of Uncork Capital. Headnote does not publish a public developer API, OpenAPI, or developer portal; this profile is an identity record.

Headnote is profiled on the APIs.io network. Tagged areas include Company, Legal, LegalTech, Payments, and Accounts Receivable.

Headnote’s developer surface includes pricing, engineering blog, support, and 7 more developer resources.

🌐 Visit website 📡 Source on GitHub

19.8/100 emerging ▬ flat Agent 0/100 human only Full breakdown ↓
scored 2026-07-27 · rubric v0.5

0 APIs

CompanyLegalLegalTechPaymentsAccounts ReceivableLaw FirmseCheckACHCredit Card PaymentsTrust AccountingIOLTACompliance

Kin Score

Kin Score How this is scored →
scored 2026-07-27 · rubric v0.5

Composite quality — 19.8/100 · emerging

Contract Quality 0.0 / 25

Developer Ergonomics 1.3 / 20

Commercial Clarity 7.9 / 20

Operational Transparency 0.0 / 13

Governance 0.0 / 12

Discoverability 6.8 / 10

Agent readiness — 0/100 · human only

Machine-Readable Contract 0 / 18

Agentic Access Contract 0 / 15

MCP Server 0 / 12

Machine-Readable Auth 0 / 10

Idempotency 0 / 9

Stable Error Semantics 0 / 8

Request/Response Examples 0 / 7

Rate-Limit Signaling 0 / 7

Typed Event Surface 0 / 6

Agent Skills 0 / 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/headnote: open an issue to ask a question, or submit a pull request to add artifacts. Want it done for you? Prioritized profiling — $2,500 →

Access & Security 2

Authentication, authorization, and security posture

DomainSecurity

DomainSecurity

Compliance

Compliance

Operate 2

Status, limits, changes, and where to get help

Support

Support

HelpCenter

HelpCenter

Commercial 3

Pricing, plans, and the legal terms of use

Pricing

Pricing

TermsOfService

TermsOfService

PrivacyPolicy

PrivacyPolicy

Company 3

The organization behind the API

Website

Website

About

About

Blog

Blog

Source (apis.yml)

aid: headnote
name: Headnote
description: Headnote is a legal payments and accounts-receivable platform built specifically for law firms. Founded in 2016
  by attorney Sarah Schaaf, it lets firms accept trust-compliant credit card and eCheck (ACH) payments via shareable payment
  links and a hosted client payment portal, then automates collections, AR tracking, and client NPS/satisfaction reporting.
  Headnote is designed to be 100% compliant with IOLTA rules, the ABA Model Rules of Professional Conduct, and lawyer trust/operating
  account requirements across all 50 states, and integrates with existing billing and practice-management software by attaching
  a Headnote payment link to invoices. Card and bank data are tokenized with Stripe and Plaid and the platform runs on AWS
  with PCI-compliant, encrypted-at-rest-and-in-transit infrastructure. Headnote was acquired by ASG LegalTech (an Alpine Investors
  platform, alongside PracticePanther, Bill4Time, and MerusCase) in 2020. It was surfaced in the API Evangelist network as
  a portfolio company of Uncork Capital. Headnote does not publish a public developer API, OpenAPI, or developer portal; this
  profile is an identity record.
url: https://raw.githubusercontent.com/api-evangelist/headnote/refs/heads/main/apis.yml
accessModel:
  pricing: unknown
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Unknown
  confidence: low
  source: []
  generated: '2026-07-22'
  method: derived
image: https://headnote.com/assets/images/logo-without-tagline.svg
x-type: company
x-source: vc-portfolio
x-backed-by:
- uncork-capital
x-tier: stub
x-tier-reason: portfolio-lead
specificationVersion: '0.20'
created: '2026-07-17'
modified: '2026-07-19'
tags:
- Company
- Legal
- LegalTech
- Payments
- Accounts Receivable
- Law Firms
- eCheck
- ACH
- Credit Card Payments
- Trust Accounting
- IOLTA
- Compliance
apis: []
common:
- type: DomainSecurity
  url: security/headnote-domain-security.yml
- type: Website
  url: https://headnote.com/
- type: About
  url: https://headnote.com/about/
- type: Pricing
  url: https://headnote.com/pricing/
- type: Blog
  url: https://blog.headnote.com/
- type: Support
  url: https://headnote.com/contact/
- type: HelpCenter
  url: https://headnote.com/faq/
- type: TermsOfService
  url: https://headnote.com/terms/
- type: PrivacyPolicy
  url: https://headnote.com/privacy/
- type: Compliance
  url: https://headnote.com/security-and-compliance/
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
x-enrichment:
  date: '2026-07-19'
  status: backfilled
  pass: local-v1
  note: backfilled from .gitignore signal + verified work evidence