Salsa

Salsa is embedded payroll infrastructure that lets SaaS platforms add native, multi-country (US and Canada) payroll to their products through REST and GraphQL APIs, embeddable UI components (Salsa Express), and real-time webhooks. Partner platforms provision employers and workers, run payroll, disburse worker payments, and handle tax setup and filings without leaving their own app. API access is partner-gated - Salsa issues sandbox and production Bearer API keys to approved platform partners.

Salsa publishes 8 APIs on the APIs.io network, including Companies API, Onboarding & Sessions API, Pay Schedules API, and 5 more. Tagged areas include Payroll, Embedded Finance, Payroll as a Service, Fintech, and Payments.

Salsa’s developer surface includes authentication, documentation, and 8 more developer resources.

🌐 Visit website 📡 Source on GitHub

35.1/100 thin ▬ flat Agent 31/100 agent aware Full breakdown ↓
scored 2026-08-05 · rubric v0.9.1

AccessFreemiumSelf serve⚡ Free to try

8 APIs

PayrollEmbedded FinancePayroll as a ServiceFintechPaymentsHRTaxMulti-Country

Kin Score

Kin Score How this is scored →
scored 2026-08-05 · rubric v0.9.1

Composite quality — 35.1/100 · thin

Contract Quality 14.0 / 25

Developer Ergonomics 3.9 / 20

Commercial Clarity 7.9 / 20

Operational Transparency 4.8 / 13

Governance 0.0 / 12

Discoverability 7.4 / 10

Agent readiness — 31/100 · agent aware

Machine-Readable Contract 18 / 18

Agentic Access Contract 10 / 10

MCP Server 0 / 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

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/salsa: 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 8

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

Rate Limits 1

Documented rate limits and quota policies.

Salsa Rate Limits

3 limits

RATE LIMITS

FinOps 1

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

Documentation 1

Reference material describing how the API behaves

Documentation

Documentation

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess

AgenticAccess

Build 1

SDKs, sample code, and the tooling you integrate with

GitHubOrganization

GitHubOrganization

Access & Security 2

Authentication, authorization, and security posture

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 2

The organization behind the API

LinkedIn

Website

Website

Source (apis.yml)

aid: salsa
url: https://raw.githubusercontent.com/api-evangelist/salsa/refs/heads/main/apis.yml
name: Salsa
kind: company
description: Salsa is embedded payroll infrastructure that lets SaaS platforms add native, multi-country (US and Canada) payroll
  to their products through REST and GraphQL APIs, embeddable UI components (Salsa Express), and real-time webhooks. Partner
  platforms provision employers and workers, run payroll, disburse worker payments, and handle tax setup and filings without
  leaving their own app. API access is partner-gated - Salsa issues sandbox and production Bearer API keys to approved platform
  partners.
accessModel:
  pricing: freemium
  onboarding: self-serve
  trial: false
  try_now: true
  public: false
  label: Freemium · Self-serve signup
  confidence: high
  source:
  - plans
  - authentication
  generated: '2026-07-22'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/salsa.png
tags:
- Payroll
- Embedded Finance
- Payroll as a Service
- Fintech
- Payments
- HR
- Tax
- Multi-Country
created: '2026-07-01'
modified: '2026-07-01'
specificationVersion: '0.19'
apis:
- aid: salsa:salsa-companies-api
  name: Salsa Companies API
  description: Employer (company) entities and configuration.
  humanURL: https://docs.salsa.dev/reference
  baseURL: https://api.salsa.dev/api/rest/v1
  tags:
  - Companies
  properties:
  - type: OpenAPI
    url: openapi/salsa-companies-api-openapi.yml
  - type: Documentation
    url: https://docs.salsa.dev/docs/building-with-salsa
  - type: APIReference
    url: https://docs.salsa.dev/reference
  - type: PostmanCollection
    url: collections/salsa.postman_collection.json
  - type: OpenCollection
    url: collections/salsa.opencollection.json
  - type: Documentation
    url: https://docs.salsa.dev/docs/payroll-run-via-api
  - type: Documentation
    url: https://docs.salsa.dev/docs/express-embedded-ui
- aid: salsa:salsa-onboarding-sessions-api
  name: Salsa Onboarding & Sessions API
  description: User tokens, hosted onboarding, and mock onboarding.
  humanURL: https://docs.salsa.dev/reference
  baseURL: https://api.salsa.dev/api/rest/v1
  tags:
  - Onboarding & Sessions
  properties:
  - type: OpenAPI
    url: openapi/salsa-onboarding-sessions-api-openapi.yml
  - type: Documentation
    url: https://docs.salsa.dev/docs/building-with-salsa
  - type: APIReference
    url: https://docs.salsa.dev/reference
  - type: PostmanCollection
    url: collections/salsa.postman_collection.json
  - type: OpenCollection
    url: collections/salsa.opencollection.json
  - type: Documentation
    url: https://docs.salsa.dev/docs/payroll-run-via-api
  - type: Documentation
    url: https://docs.salsa.dev/docs/express-embedded-ui
- aid: salsa:salsa-pay-schedules-api
  name: Salsa Pay Schedules API
  description: Worker pay groups and work weeks.
  humanURL: https://docs.salsa.dev/reference
  baseURL: https://api.salsa.dev/api/rest/v1
  tags:
  - Pay Schedules
  properties:
  - type: OpenAPI
    url: openapi/salsa-pay-schedules-api-openapi.yml
  - type: Documentation
    url: https://docs.salsa.dev/docs/building-with-salsa
  - type: APIReference
    url: https://docs.salsa.dev/reference
  - type: PostmanCollection
    url: collections/salsa.postman_collection.json
  - type: OpenCollection
    url: collections/salsa.opencollection.json
  - type: Documentation
    url: https://docs.salsa.dev/docs/payroll-run-via-api
  - type: Documentation
    url: https://docs.salsa.dev/docs/express-embedded-ui
- aid: salsa:salsa-payments-api
  name: Salsa Payments API
  description: Individual worker payments and disbursements.
  humanURL: https://docs.salsa.dev/reference
  baseURL: https://api.salsa.dev/api/rest/v1
  tags:
  - Payments
  properties:
  - type: OpenAPI
    url: openapi/salsa-payments-api-openapi.yml
  - type: Documentation
    url: https://docs.salsa.dev/docs/building-with-salsa
  - type: APIReference
    url: https://docs.salsa.dev/reference
  - type: PostmanCollection
    url: collections/salsa.postman_collection.json
  - type: OpenCollection
    url: collections/salsa.opencollection.json
  - type: Documentation
    url: https://docs.salsa.dev/docs/payroll-run-via-api
  - type: Documentation
    url: https://docs.salsa.dev/docs/express-embedded-ui
- aid: salsa:salsa-payrolls-api
  name: Salsa Payrolls API
  description: Payroll runs and reports.
  humanURL: https://docs.salsa.dev/reference
  baseURL: https://api.salsa.dev/api/rest/v1
  tags:
  - Payrolls
  properties:
  - type: OpenAPI
    url: openapi/salsa-payrolls-api-openapi.yml
  - type: Documentation
    url: https://docs.salsa.dev/docs/building-with-salsa
  - type: APIReference
    url: https://docs.salsa.dev/reference
  - type: PostmanCollection
    url: collections/salsa.postman_collection.json
  - type: OpenCollection
    url: collections/salsa.opencollection.json
  - type: Documentation
    url: https://docs.salsa.dev/docs/payroll-run-via-api
  - type: Documentation
    url: https://docs.salsa.dev/docs/express-embedded-ui
- aid: salsa:salsa-tax-api
  name: Salsa Tax API
  description: Employer and worker tax setup.
  humanURL: https://docs.salsa.dev/reference
  baseURL: https://api.salsa.dev/api/rest/v1
  tags:
  - Tax
  properties:
  - type: OpenAPI
    url: openapi/salsa-tax-api-openapi.yml
  - type: Documentation
    url: https://docs.salsa.dev/docs/building-with-salsa
  - type: APIReference
    url: https://docs.salsa.dev/reference
  - type: PostmanCollection
    url: collections/salsa.postman_collection.json
  - type: OpenCollection
    url: collections/salsa.opencollection.json
  - type: Documentation
    url: https://docs.salsa.dev/docs/payroll-run-via-api
  - type: Documentation
    url: https://docs.salsa.dev/docs/express-embedded-ui
- aid: salsa:salsa-webhooks-api
  name: Salsa Webhooks API
  description: Webhook endpoint management.
  humanURL: https://docs.salsa.dev/reference
  baseURL: https://api.salsa.dev/api/rest/v1
  tags:
  - Webhooks
  properties:
  - type: OpenAPI
    url: openapi/salsa-webhooks-api-openapi.yml
  - type: Documentation
    url: https://docs.salsa.dev/docs/building-with-salsa
  - type: APIReference
    url: https://docs.salsa.dev/reference
  - type: PostmanCollection
    url: collections/salsa.postman_collection.json
  - type: OpenCollection
    url: collections/salsa.opencollection.json
  - type: Documentation
    url: https://docs.salsa.dev/docs/payroll-run-via-api
  - type: Documentation
    url: https://docs.salsa.dev/docs/express-embedded-ui
- aid: salsa:salsa-workers-api
  name: Salsa Workers API
  description: Employees and contractors.
  humanURL: https://docs.salsa.dev/reference
  baseURL: https://api.salsa.dev/api/rest/v1
  tags:
  - Workers
  properties:
  - type: OpenAPI
    url: openapi/salsa-workers-api-openapi.yml
  - type: Documentation
    url: https://docs.salsa.dev/docs/building-with-salsa
  - type: APIReference
    url: https://docs.salsa.dev/reference
  - type: PostmanCollection
    url: collections/salsa.postman_collection.json
  - type: OpenCollection
    url: collections/salsa.opencollection.json
  - type: Documentation
    url: https://docs.salsa.dev/docs/payroll-run-via-api
  - type: Documentation
    url: https://docs.salsa.dev/docs/express-embedded-ui
common:
- type: AgenticAccess
  url: agentic-access/salsa-agentic-access.yml
- type: DomainSecurity
  url: security/salsa-domain-security.yml
- type: Authentication
  url: authentication/salsa-authentication.yml
- type: GitHubOrganization
  url: https://github.com/salsa-payroll
- type: LinkedIn
  url: https://www.linkedin.com/company/salsa-dev
- type: Website
  url: https://www.salsa.dev/
- type: Documentation
  url: https://docs.salsa.dev/
- type: Plans
  url: plans/salsa-plans-pricing.yml
- type: RateLimits
  url: rate-limits/salsa-rate-limits.yml
- type: FinOps
  url: finops/salsa-finops.yml
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com

Salsa

Kin Score

APIs 8

Salsa Companies API

Salsa Onboarding & Sessions API

Salsa Pay Schedules API

Salsa Payments API

Salsa Payrolls API

Salsa Tax API

Salsa Webhooks API

Salsa Workers API

Open Collections 1

Salsa Payroll API

Pricing Plans 1

Salsa Plans Pricing

Rate Limits 1

Salsa Rate Limits

FinOps 1

Salsa Finops

Security Posture 2

Salsa Authentication

Salsa Domain Security

Agentic Access 1

Salsa Agentic Access

Resources