Stem AI

StemAI (Stem AI SAS) is a Paris-based accelerator and early-stage investment program for founders building LLM-powered products. Its stated thesis is that large language models are already capable enough to build great products today, so the program backs product and user experience rather than research breakthroughs. Each accepted company receives a $250,000 SAFE investment, $350,000 in partner cloud credits, recurring checkpoints with AI advisors, help accessing follow-on funding, and a founder summit hosted in Paris. The program is led by Nicolas Granatino, with a board that includes Mehdi Ghissassi (AI71) and Severine Gregoire (Zebox Ventures), and advisors in residence drawn from Hugging Face, Datadog, InstaDeep, Dust, Photoroom, Helsing, Nabla, QuantHouse and Parrot. StemAI is a private company whose shares are quoted on the secondary markets (Forge, Hiive, EquityZen). It publishes no API, SDK, developer portal or machine-readable specification of any kind.

Stem AI is profiled on the APIs.io network. Tagged areas include Company, Venture Capital, Accelerator, Artificial Intelligence, and Large Language Models.

Stem AI’s developer surface includes signup flow and 3 more developer resources.

🌐 Visit website 📡 Source on GitHub

7.6/100 minimal ▬ flat Agent 0/100 human only saas Full breakdown ↓
scored 2026-09-08 · rubric v0.20.0

0 APIs

Company Venture Capital Accelerator Artificial Intelligence Large Language Models Startups France Investment

Kin Score

Kin Score How this is scored →
scored 2026-09-08 · rubric v0.20.0

Composite quality — 7.6/100 · minimal

Contract Quality 0.0 / 25

Developer Ergonomics 0.0 / 20

Access Clarity 2.6 / 20

Operational Transparency 0.0 / 13

Contract Governance 0.0 / 12

Discoverability 5.0 / 10

Agent readiness — 0/100 · human only

Machine-Readable Contract 0 / 18

Agentic Access Contract 0 / 10

Documented Reversibility 0 / 6

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

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

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.

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Security Posture 1

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

Stem Domain Security

TLSv1.3

SECURITY

Resources

Get Started 1

Portal, sign-up, and the first successful call

SignUp

SignUp

Access & Security 1

Authentication, authorization, and security posture

DomainSecurity

DomainSecurity

Company 1

The organization behind the API

Website

Website

Other 1

Properties that don't map to a standard resource type

SecondaryMarket

SecondaryMarket

Source (apis.yml)

aid: stem
name: Stem AI
description: StemAI (Stem AI SAS) is a Paris-based accelerator and early-stage investment program for founders building LLM-powered
  products. Its stated thesis is that large language models are already capable enough to build great products today, so the
  program backs product and user experience rather than research breakthroughs. Each accepted company receives a $250,000
  SAFE investment, $350,000 in partner cloud credits, recurring checkpoints with AI advisors, help accessing follow-on funding,
  and a founder summit hosted in Paris. The program is led by Nicolas Granatino, with a board that includes Mehdi Ghissassi
  (AI71) and Severine Gregoire (Zebox Ventures), and advisors in residence drawn from Hugging Face, Datadog, InstaDeep, Dust,
  Photoroom, Helsing, Nabla, QuantHouse and Parrot. StemAI is a private company whose shares are quoted on the secondary markets
  (Forge, Hiive, EquityZen). It publishes no API, SDK, developer portal or machine-readable specification of any kind.
url: https://raw.githubusercontent.com/api-evangelist/stem/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:
  - security
  generated: '2026-09-02'
  method: derived
image: https://stemai.vc/icons/icon-512x512.png
x-type: company
x-source: harvest:secondary-market
specificationVersion: '0.23'
created: '2026-08-05'
modified: '2026-08-05'
tags:
- Company
- Venture Capital
- Accelerator
- Artificial Intelligence
- Large Language Models
- Startups
- France
- Investment
apis: []
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: DomainSecurity
  url: security/stem-domain-security.yml
- type: Website
  url: https://stemai.vc/
- type: SignUp
  url: https://stemai.vc/apply
- type: SecondaryMarket
  url: https://forgeglobal.com/stem-ai_stock/
x-enrichment:
  date: '2026-08-05'
  status: minimal
  artifacts_added: 2
  pass: local-v1
x-coverage:
  state: none
  reason: not-a-software-company
  detail: StemAI is an accelerator and early-stage fund (Stem AI SAS, Paris) that writes $250k SAFEs into LLM-product founders;
    stemai.vc is a four-page Gatsby brochure site whose only interactive surface is an Airtable application form, so there
    is no product and nothing to expose as an API.
  evidence:
  - url: https://stemai.vc/
    status: 200
  - url: https://stemai.vc/openapi.json
    status: 404
  - url: https://stemai.vc/.well-known/agent-card.json
    status: 404
  - url: https://stemai.vc/llms.txt
    status: 404
  checked: '2026-08-05'

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