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

34.1/100 thin ▬ flat Agent 20/100 agent aware Full breakdown ↓
scored 2026-08-25 · rubric v0.14.0

AccessFreemiumSelf serve⚡ Free to try

8 APIs

Payroll Embedded FinancePayroll as a ServiceFintech Payments HR TaxMulti-Country

Kin Score

Kin Score How this is scored →
scored 2026-08-25 · rubric v0.14.0

Composite quality — 34.1/100 · thin

Contract Quality 11.1 / 21

Developer Ergonomics 2.8 / 17

Access Clarity 6.7 / 17

Operational Transparency 3.8 / 11

Contract Governance 0.0 / 10

Discoverability 6.3 / 9

Regulatory Posture 2.8 / 15

Agent readiness — 20/100 · agent aware

Machine-Readable Contract 18 / 18

Agentic Access Contract 10 / 10

Documented Reversibility 0 / 6

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

Delegated User Identity 0 / 6

Protected Resource Metadata 0 / 5

Registration Without a Human 0 / 6

Agentic Commerce Surface 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.

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/.

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.

Open Collections 10

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

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: '0.23'
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:
  - Webhook
  tags_raw:
  - 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

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