Sema4 Ai

Sema4.ai is an enterprise AI agent company building a platform that lets organizations design, run, and manage AI agents that combine actions, intelligence, and enterprise context to transform knowledge work. Its developer surface centers on AI Actions — Python functions exposed to agents via the open-source Sema4.ai Action Server, which serves both an OpenAPI-compatible REST API and a Model Context Protocol (MCP) server. The platform adds a versioned REST API (v2) for driving agents, conversations, Work Items, data connections, MCP servers, and audits programmatically, plus Enterprise and Snowflake-native Team editions. Founded by the team behind Robocorp, Sema4.ai is backed by Mayfield.

Sema4 Ai publishes 1 API on the APIs.io network. Tagged areas include Company, Artificial Intelligence, AI Agents, Automation, and MCP.

Sema4 Ai’s developer surface includes documentation, API reference, getting-started guide, engineering blog, pricing, signup flow, support, and 22 more developer resources.

🌐 Visit website 📡 Source on GitHub

35.8/100 thin ▬ flat Agent 5/100 agent aware Front door AI 6/6 dominant saas Full breakdown ↓
scored 2026-09-25 · rubric v0.23.0

1 APIs 1 MCP Servers

Company Artificial Intelligence AI Agents Automation MCP Enterprise AI Actions Python Developer Tools

Kin Score

Kin Score How this is scored →
scored 2026-09-25 · rubric v0.23.0

Composite quality — 35.8/100 · thin

Contract Quality 0.0 / 21

Developer Ergonomics 12.1 / 17

Access Clarity 7.6 / 17

Operational Transparency 3.2 / 11

Contract Governance 0.5 / 10

Discoverability 5.5 / 9

Regulatory Posture 4.2 / 15

Agent readiness — 5/100 · agent aware

Machine-Readable Contract 0 / 18

Agentic Access Contract 0 / 10

Documented Reversibility 0 / 6

MCP Server 0 / 12

Machine-Readable Auth 10 / 10

Idempotency 0 / 9

Stable Error Semantics 8 / 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

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 Horizontal (data, software, accessibility, platform) 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/.

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/sema4-ai: 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 1

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

Sema4.ai REST API

The v2 REST API drives the Sema4.ai platform programmatically — list and talk to agents, stream responses, queue and manage Work Items, read data connections, manage MCP servers...

MCP Servers 1

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

Sema4 Ai MCP Server

MCP SERVER

Security Posture 3

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

Sema4 Ai Authentication

http/openIdConnect · 3 schemes

SECURITY

Sema4 Ai Domain Security

TLSv1.3 · HSTS · DNSSEC · DMARC

SECURITY

Sema4 Ai Vulnerability Disclosure

security.txt · contact published

SECURITY

Resources

Get Started 3

Portal, sign-up, and the first successful call

DeveloperPortal

DeveloperPortal

GettingStarted

GettingStarted

SignUp

SignUp

Documentation 2

Reference material describing how the API behaves

Documentation

Documentation

APIReference

APIReference

Agent Surfaces 3

MCP servers, agent skills, and machine-readable catalogs

MCPServer

MCPServer

LLMsTxt

LLMsTxt

WellKnown

WellKnown

Design & Contract 5

Pagination, idempotency, versioning, errors, and events

Conventions

ErrorCatalog

Lifecycle

DataModel

Conformance

Build 4

SDKs, sample code, and the tooling you integrate with

GitHubOrganization

Packages

SDKs

CLI

Access & Security 5

Authentication, authorization, and security posture

SecurityTxt

SecurityTxt

Authentication

Authentication

DomainSecurity

DomainSecurity

VulnerabilityDisclosure

VulnerabilityDisclosure

Security

Security

Operate 2

Status, limits, changes, and where to get help

Support

Support

ChangeLog

ChangeLog

Commercial 3

Pricing, plans, and the legal terms of use

Pricing

Pricing

TermsOfService

TermsOfService

PrivacyPolicy

PrivacyPolicy

Company 2

The organization behind the API

Website

Website

Blog

Blog

Source (apis.yml)

aid: sema4-ai
name: Sema4 Ai
description: Sema4.ai is an enterprise AI agent company building a platform that lets organizations design, run, and manage
  AI agents that combine actions, intelligence, and enterprise context to transform knowledge work. Its developer surface
  centers on AI Actions — Python functions exposed to agents via the open-source Sema4.ai Action Server, which serves both
  an OpenAPI-compatible REST API and a Model Context Protocol (MCP) server. The platform adds a versioned REST API (v2) for
  driving agents, conversations, Work Items, data connections, MCP servers, and audits programmatically, plus Enterprise and
  Snowflake-native Team editions. Founded by the team behind Robocorp, Sema4.ai is backed by Mayfield.
url: https://raw.githubusercontent.com/api-evangelist/sema4-ai/refs/heads/main/apis.yml
deliveryModel:
  model: saas
  open_source: false
  commercial: true
  callable_host: false
  label: Hosted service · you call their endpoint
  confidence: medium
  source:
  - pricing
  generated: '2026-08-28'
  method: derived
accessModel:
  pricing: unknown
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Unknown
  confidence: low
  source:
  - authentication
  - security
  generated: '2026-09-03'
  method: derived
image: https://sema4.ai/favicon.svg
x-type: company
x-source: vc-portfolio
x-backed-by:
- mayfield
x-tier: stub
x-tier-reason: portfolio-lead
specificationVersion: '0.23'
created: '2026-07-17'
modified: '2026-07-21'
tags:
- Company
- Artificial Intelligence
- AI Agents
- Automation
- MCP
- Enterprise AI
- Actions
- Python
- Developer Tools
apis:
- name: Sema4.ai REST API
  description: The v2 REST API drives the Sema4.ai platform programmatically — list and talk to agents, stream responses,
    queue and manage Work Items, read data connections, manage MCP servers, and read audits. Each deployment serves its own
    OpenAPI spec at GET /api/v2. Authenticated with a bearer API key.
  humanURL: https://sema4.ai/docs/v2/api
  properties:
  - type: APIReference
    url: https://sema4.ai/docs/v2/api
  - type: Authentication
    url: authentication/sema4-ai-authentication.yml
  - type: Conventions
    url: conventions/sema4-ai-conventions.yml
  - type: ErrorCatalog
    url: errors/sema4-ai-problem-types.yml
  - type: DataModel
    url: data-model/sema4-ai-data-model.yml
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: Website
  url: https://sema4.ai
- type: DeveloperPortal
  url: https://sema4.ai/docs
- type: Documentation
  url: https://sema4.ai/docs
- type: APIReference
  url: https://sema4.ai/docs/v2/api
- type: GettingStarted
  url: https://sema4.ai/docs
- type: Blog
  url: https://sema4.ai/blog/
- type: Pricing
  url: https://sema4.ai/pricing/
- type: SignUp
  url: https://sema4.ai/try-team-edition/
- type: TermsOfService
  url: https://sema4.ai/terms-and-conditions/
- type: PrivacyPolicy
  url: https://sema4.ai/privacy-policy/
- type: Support
  url: https://sema4.ai/contact-us/
- type: GitHubOrganization
  url: https://github.com/Sema4AI
- type: Packages
  url: packages/sema4-ai-packages.yml
- type: SDKs
  url: packages/sema4-ai-packages.yml
- type: CLI
  url: cli/sema4-ai-cli.yml
- type: MCPServer
  url: mcp/sema4-ai-mcp.yml
- type: LLMsTxt
  url: llms/sema4-ai-llms.txt
- type: WellKnown
  url: well-known/sema4-ai-well-known.yml
- type: SecurityTxt
  url: well-known/sema4-ai-security.txt
- type: Authentication
  url: authentication/sema4-ai-authentication.yml
- type: Conventions
  url: conventions/sema4-ai-conventions.yml
- type: ErrorCatalog
  url: errors/sema4-ai-problem-types.yml
- type: Lifecycle
  url: lifecycle/sema4-ai-lifecycle.yml
- type: ChangeLog
  url: changelog/sema4-ai-changelog.yml
- type: DataModel
  url: data-model/sema4-ai-data-model.yml
- type: Conformance
  url: conformance/sema4-ai-conformance.yml
- type: DomainSecurity
  url: security/sema4-ai-domain-security.yml
- type: VulnerabilityDisclosure
  url: security/sema4-ai-vulnerability-disclosure.yml
- type: Security
  url: https://sema4.ai/.well-known/responsible-disclosure-policy.html
x-enrichment:
  date: '2026-07-21'
  status: enriched
  artifacts_added: 15
  pass: local-v1

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/sema4-ai"

All providers

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

Every operation they expose

curl "https://apis.io/api/v1/providers/sema4-ai/operations?limit=25"

How their score was established

curl "https://apis.io/api/v1/providers/sema4-ai/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.