Fluidstack

Fluidstack is an AI cloud platform that builds and operates high-performance, single-tenant GPU clusters for top AI labs, governments, and enterprises. Founded in 2017 out of Oxford University and now headquartered in New York City, Fluidstack manages more than 100,000 GPUs across its global network and has been selected by customers including Anthropic, Meta, Mistral, Poolside, Black Forest Labs, and Character.AI. Its core offering combines on-demand bare-metal GPU clusters (including thousands of NVIDIA H200s with InfiniBand) with managed Kubernetes and managed Slurm orchestration layers, Lighthouse observability, and human-on-call site reliability. Fluidstack exposes a global REST Management API (api.atlas.fluidstack.io/api/v1alpha1) and the fluidctl CLI for managing organizations, projects, regions, clusters, instances, members, invitations, and SSH keys. The platform is GDPR, SOC 2 Type 2, and ISO 27001 certified, and was awarded ClusterMAX Gold by SemiAnalysis.

Fluidstack publishes 7 API contracts indexed on the APIs.io network, including Clusters API, Instances API, Invitations API, and 4 more. Tagged areas include Artificial Intelligence, GPU, Cloud, Compute, and Infrastructure.

The Fluidstack catalog on APIs.io includes 1 Spectral governance ruleset.

Fluidstack’s developer surface includes authentication, developer portal, documentation, getting-started guide, engineering blog, and 15 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

27.5/100 thin ▬ flat Agent 24/100 agent aware Front door AI 3/6 light Full breakdown ↓
scored 2026-11-06 · rubric v0.27.0 · Show this score on your site →

1 published contract 14 Features

Artificial Intelligence GPU Cloud Compute Infrastructure Machine Learning Foundation Models Training Inference Kubernetes Slurm Bare Metal NVIDIAInfiniBandData Center Model Training

What this lets a business do 2

Business capabilities this provider's published APIs can perform, derived from its own contracts. Browse all capabilities →

Information Technology Management

BC-600

ClustersInstances

GET /clusters GET /instances

Cybersecurity Management

BC-620

User

POST /user/keys

Kin Score

Kin Score How this is scored →
scored 2026-11-06 · rubric v0.27.0

Composite quality — 27.5/100 · thin

Contract Quality 8.3 / 19

Developer Ergonomics 7.5 / 15

Access Clarity 0.0 / 15

Operational Transparency 0.0 / 10

Contract Governance 1.2 / 9

Discoverability 5.0 / 8

Regulatory Posture 1.6 / 15

Create-or-Update Ergonomics 0.0 / 10

Agent readiness — 24/100 · 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 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

Pagination 0 / 5

Distinct Operations 3 / 3

MCP Tool Quality 6 / 6

Regulatory Posture applies to this provider. Its tags matched the AI & Biometrics 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 applies to this provider. This API accepts writes, so it carries 10 points of the composite. It is scored from the published contracts themselves: whether a caller can create-or-update in one call, whether the write accepts a key the caller already holds, and whether the response says which branch ran. Without that, every write needs a search-and-branch in front of it, and the first time that check is skipped a duplicate record is created. Scored against the observed mean rather than raw — a provider at the catalog average is unchanged by this facet, not penalised by it.

The six quality facets above are damped to 75 points between them, because the conditional facet above carries the other 25. That is why each facet's contribution is shown against a damped maximum: raising a quality facet moves the composite by 75% of its nominal weight, not 100%. The full arithmetic is at apis.io/rating/.

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Agent readiness — checks not met, largest first (exact, from this profile):

MCP Server +12 pts — deployment.mode + probe verdict on the mcp/ manifest, not the pointer; an unprobed slug falls back to authorship
Idempotency +9 pts — OpenAPI mutating operations declare an idempotency key — a header, a request-body property, or a named de-duplication token whose own description says so (verified); else common[].type matches /idempoten/i (documented)
A2A Agent Card +8 pts — a2a/-a2a.yml manifest, graded on conformance.grade against A2A 1.0.0
Rate-Limit Signaling +7 pts — OpenAPI responses document X-RateLimit-* / RateLimit headers (verified), else a rate_limits artifact or RateLimits link (documented)
Request/Response Examples +7 pts — share of operations carrying request/response examples; else an Examples / Code Samples link
Registration Without a Human +6 pts — a `registration_endpoint` in the served RFC 8414 / OIDC discovery document

10 more unmet checks in the Agent Readiness table above.

Kin Score — facets with the most composite points still available (weight × headroom):

Access Clarity scores 0.0 — up to +20.0 composite points
Contract Quality scores 44.2 — up to +14.0 composite points
Operational Transparency scores 0.0 — up to +13.0 composite points

Each check links to what satisfies it. Publish the artifact, or tell us where it already lives, and the score moves on the next scoring run.

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 the provider profile at artifacts.apis.io/fluidstack/apis.yml: open an issue on github.com/api-evangelist/fluidstack to ask a question or point us at an artifact you publish. Submit an artifact on GitHub — free → Manage your own listing — the Influence plan, $499/mo →

Markets this provider is in provisional

The Kin Score Market layer reads a provider inside its market: its position, and how deep its integrations go. Depth is only comparable within a position. Provisional and unweighted: not part of the Kin Score or agent readiness.

Market	Position	Depth	Registered MCP server	Declares compatibility
Network Edge (CDN, networking, peering, edge compute)	standard	17.2 (thin)	-	-

Registered MCP server and declares compatibility are report only — not weighted. Undeclared means we found nothing we can read, so there is no number: we never infer integrations.

Standards implemented 1

Standards this provider implements or carries. De facto ones are profiled and measured by the API Commons; formal ones come from the standards directory and are linked by the provider's own tags. The evidence column says how each claim was established — not that it was made.

OpenAPI

measured — observed by APIs.io (published)

APIs 7

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

Fluidstack Clusters API

The Clusters API from Fluidstack — 1 operation(s) for clusters.

Fluidstack Instances API

The Instances API from Fluidstack — 2 operation(s) for instances.

Fluidstack Invitations API

The Invitations API from Fluidstack — 2 operation(s) for invitations.

Fluidstack Members API

The Members API from Fluidstack — 2 operation(s) for members.

Fluidstack Organizations API

The Organizations API from Fluidstack — 1 operation(s) for organizations.

Fluidstack Regions API

The Regions API from Fluidstack — 1 operation(s) for regions.

Fluidstack User API

The User API from Fluidstack — 2 operation(s) for user.

Scroll for all 7

Open Collections 8

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

Management Clusters API

OPEN COLLECTION

Management Clusters Instances API

OPEN COLLECTION

Management Clusters Invitations API

OPEN COLLECTION

Management API

OPEN COLLECTION

Management Clusters Members API

OPEN COLLECTION

Management Clusters Organizations API

OPEN COLLECTION

Management Clusters Regions API

OPEN COLLECTION

Management Clusters User API

OPEN COLLECTION

Scroll for all 8

Features 14

Notable capabilities this provider offers.

On-demand single-tenant GPU clusters with isolated hardware, network, and storage

Immediate access to thousands of NVIDIA H200 GPUs with InfiniBand interconnect

Managed Kubernetes — bare-metal container orchestration with NVIDIA operators and health checks

Managed Slurm — bare-metal batch orchestration with user management and topology-aware scheduling

Lighthouse observability and monitoring for GPU clusters

Global Management API (v1alpha1) at api.atlas.fluidstack.io for clusters, instances, regions, members, invitations, and SSH keys

fluidctl command-line tool with auth, capacity, instance-types, instances, kubernetes, projects, slurm commands

Bearer token authentication with optional X-PROJECT-ID header scoping

Custom data centers — selected by Anthropic to deliver capacity in New York and Texas

Demonstrated rapid deployment — 2,500+ GPUs delivered to Poolside in 48 hours

100,000+ GPUs under management across the network

15-minute response SLA with direct engineer maintenance and audit logs

GDPR, SOC 2 Type 2, and ISO 27001 certified

ClusterMAX Gold awarded by SemiAnalysis (Nov 2025)

Scroll for all 14

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs.

Fluidstack API Rules

54 rules · 52 errors 1 warnings 1 info

SPECTRAL

Security Posture 2

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

Fluidstack Authentication

http · 1 scheme

SECURITY

Fluidstack Domain Security

TLSv1.3 · HSTS · DNSSEC · DMARC

SECURITY

Agentic Access 1

Recommended x-agentic-access execution contracts for AI agents.

Fluidstack Agentic Access

14 operations · 6 acting

AGENTIC

Resources

Get Started 2

Portal, sign-up, and the first successful call

Portal

Portal

GettingStarted

GettingStarted

Documentation 6

Reference material describing how the API behaves

Documentation

Documentation

Documentation

Documentation

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

SDKs

SDKs

Access & Security 2

Authentication, authorization, and security posture

DomainSecurity

DomainSecurity

Authentication

Authentication

Operate 1

Status, limits, changes, and where to get help

Contact

Contact

Company 6

The organization behind the API

Website

About

Blog

Careers

LinkedIn

Twitter

Twitter

Other 1

Properties that don't map to a standard resource type

CapabilityMap

CapabilityMap

Source (apis.yml)

aid: fluidstack
name: Fluidstack
description: Fluidstack is an AI cloud platform that builds and operates high-performance, single-tenant GPU clusters for
  top AI labs, governments, and enterprises. Founded in 2017 out of Oxford University and now headquartered in New York City,
  Fluidstack manages more than 100,000 GPUs across its global network and has been selected by customers including Anthropic,
  Meta, Mistral, Poolside, Black Forest Labs, and Character.AI. Its core offering combines on-demand bare-metal GPU clusters
  (including thousands of NVIDIA H200s with InfiniBand) with managed Kubernetes and managed Slurm orchestration layers, Lighthouse
  observability, and human-on-call site reliability. Fluidstack exposes a global REST Management API (api.atlas.fluidstack.io/api/v1alpha1)
  and the fluidctl CLI for managing organizations, projects, regions, clusters, instances, members, invitations, and SSH keys.
  The platform is GDPR, SOC 2 Type 2, and ISO 27001 certified, and was awarded ClusterMAX Gold by SemiAnalysis.
type: Index
deliveryModel:
  model: unknown
  open_source: false
  commercial: false
  callable_host: true
  label: Delivery model not determined — needs a product licence on record
  confidence: low
  source:
  - openapi
  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: '2026-11-06'
  method: derived
position: Producing
access: 3rd-Party
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/fluidstack.png
x-docs-platform: docusaurus
x-docs-platform-confidence: medium
x-docs-platform-checked: 2026-10-03
tags:
- Artificial Intelligence
- GPU
- Cloud
- Compute
- Infrastructure
- Machine Learning
- Foundation Models
- Training
- Inference
- Kubernetes
- Slurm
- Bare Metal
- NVIDIA
- InfiniBand
- Data Center
- Model Training
tags_raw:
- AI
- Artificial Intelligence
- GPU
- Cloud
- Compute
- Infrastructure
- Machine Learning
- Foundation Models
- Training
- Inference
- Kubernetes
- Slurm
- Bare Metal
- NVIDIA
- InfiniBand
- Data Centers
- Machine-Learning
- Data-Center
- Model Training
url: https://raw.githubusercontent.com/api-evangelist/fluidstack/refs/heads/main/apis.yml
created: '2026-05-25'
modified: '2026-05-25'
specificationVersion: '0.23'
apis:
- aid: fluidstack:fluidstack-clusters-api
  name: Fluidstack Clusters API
  description: The Clusters API from Fluidstack — 1 operation(s) for clusters.
  humanURL: https://docs.fluidstack.io/api-reference/management-api
  baseURL: https://api.atlas.fluidstack.io/api/v1alpha1
  tags:
  - Cluster
  tags_raw:
  - Clusters
  properties:
  - type: OpenAPI
    url: openapi/fluidstack-clusters-api-openapi.yml
  - type: Documentation
    url: https://docs.fluidstack.io/api-reference/management-api
- aid: fluidstack:fluidstack-instances-api
  name: Fluidstack Instances API
  description: The Instances API from Fluidstack — 2 operation(s) for instances.
  humanURL: https://docs.fluidstack.io/api-reference/management-api
  baseURL: https://api.atlas.fluidstack.io/api/v1alpha1
  tags:
  - Instances
  properties:
  - type: OpenAPI
    url: openapi/fluidstack-instances-api-openapi.yml
  - type: Documentation
    url: https://docs.fluidstack.io/api-reference/management-api
- aid: fluidstack:fluidstack-invitations-api
  name: Fluidstack Invitations API
  description: The Invitations API from Fluidstack — 2 operation(s) for invitations.
  humanURL: https://docs.fluidstack.io/api-reference/management-api
  baseURL: https://api.atlas.fluidstack.io/api/v1alpha1
  tags:
  - Invitations
  properties:
  - type: OpenAPI
    url: openapi/fluidstack-invitations-api-openapi.yml
  - type: Documentation
    url: https://docs.fluidstack.io/api-reference/management-api
- aid: fluidstack:fluidstack-members-api
  name: Fluidstack Members API
  description: The Members API from Fluidstack — 2 operation(s) for members.
  humanURL: https://docs.fluidstack.io/api-reference/management-api
  baseURL: https://api.atlas.fluidstack.io/api/v1alpha1
  tags:
  - Members
  properties:
  - type: OpenAPI
    url: openapi/fluidstack-members-api-openapi.yml
  - type: Documentation
    url: https://docs.fluidstack.io/api-reference/management-api
- aid: fluidstack:fluidstack-organizations-api
  name: Fluidstack Organizations API
  description: The Organizations API from Fluidstack — 1 operation(s) for organizations.
  humanURL: https://docs.fluidstack.io/api-reference/management-api
  baseURL: https://api.atlas.fluidstack.io/api/v1alpha1
  tags:
  - Organization
  tags_raw:
  - Organizations
  properties:
  - type: OpenAPI
    url: openapi/fluidstack-organizations-api-openapi.yml
  - type: Documentation
    url: https://docs.fluidstack.io/api-reference/management-api
- aid: fluidstack:fluidstack-regions-api
  name: Fluidstack Regions API
  description: The Regions API from Fluidstack — 1 operation(s) for regions.
  humanURL: https://docs.fluidstack.io/api-reference/management-api
  baseURL: https://api.atlas.fluidstack.io/api/v1alpha1
  tags:
  - Regions
  properties:
  - type: OpenAPI
    url: openapi/fluidstack-regions-api-openapi.yml
  - type: Documentation
    url: https://docs.fluidstack.io/api-reference/management-api
- aid: fluidstack:fluidstack-user-api
  name: Fluidstack User API
  description: The User API from Fluidstack — 2 operation(s) for user.
  humanURL: https://docs.fluidstack.io/api-reference/management-api
  baseURL: https://api.atlas.fluidstack.io/api/v1alpha1
  tags:
  - User
  properties:
  - type: OpenAPI
    url: openapi/fluidstack-user-api-openapi.yml
  - type: Documentation
    url: https://docs.fluidstack.io/api-reference/management-api
common:
- type: CapabilityMap
  url: capabilities/fluidstack-capability-edges.yml
  name: Fluidstack Business Capability Map
- type: AgenticAccess
  url: agentic-access/fluidstack-agentic-access.yml
- type: DomainSecurity
  url: security/fluidstack-domain-security.yml
- type: Authentication
  url: authentication/fluidstack-authentication.yml
- type: Website
  url: https://www.fluidstack.io
- type: Portal
  url: https://docs.fluidstack.io
- type: Documentation
  url: https://docs.fluidstack.io/getting-started/overview
- type: GettingStarted
  url: https://docs.fluidstack.io/getting-started/overview
- type: Documentation
  url: https://docs.fluidstack.io/projects/overview
- type: Documentation
  url: https://docs.fluidstack.io/kubernetes/overview
- type: Documentation
  url: https://docs.fluidstack.io/slurm/overview
- type: Documentation
  url: https://docs.fluidstack.io/lighthouse/overview
- type: Documentation
  url: https://docs.fluidstack.io/api-reference/management-api
- type: SDKs
  url: https://docs.fluidstack.io/cli-reference/fluidctl
  name: fluidctl CLI
- type: About
  url: https://www.fluidstack.io/about-us/about
- type: Blog
  url: https://www.fluidstack.io/about-us/blog
- type: Careers
  url: https://www.fluidstack.io/about-us/careers
- type: Contact
  url: https://www.fluidstack.io/contact
- type: LinkedIn
  url: https://www.linkedin.com/company/fluidstack
- type: Twitter
  url: https://twitter.com/fluidstackio
- type: Features
  data:
  - On-demand single-tenant GPU clusters with isolated hardware, network, and storage
  - Immediate access to thousands of NVIDIA H200 GPUs with InfiniBand interconnect
  - Managed Kubernetes — bare-metal container orchestration with NVIDIA operators and health checks
  - Managed Slurm — bare-metal batch orchestration with user management and topology-aware scheduling
  - Lighthouse observability and monitoring for GPU clusters
  - Global Management API (v1alpha1) at api.atlas.fluidstack.io for clusters, instances, regions, members, invitations, and
    SSH keys
  - fluidctl command-line tool with auth, capacity, instance-types, instances, kubernetes, projects, slurm commands
  - Bearer token authentication with optional X-PROJECT-ID header scoping
  - Custom data centers — selected by Anthropic to deliver capacity in New York and Texas
  - Demonstrated rapid deployment — 2,500+ GPUs delivered to Poolside in 48 hours
  - 100,000+ GPUs under management across the network
  - 15-minute response SLA with direct engineer maintenance and audit logs
  - GDPR, SOC 2 Type 2, and ISO 27001 certified
  - ClusterMAX Gold awarded by SemiAnalysis (Nov 2025)
  sources:
  - https://www.fluidstack.io
  - https://docs.fluidstack.io
  - https://docs.fluidstack.io/api-reference/management-api
  - https://docs.fluidstack.io/cli-reference/fluidctl
  - https://www.fluidstack.io/about-us/blog
maintainers:
- FN: Kin Lane
  email: info@apievangelist.com
  X: apievangelist
  url: https://apievangelist.com

Fluidstack API — frequently asked questions

Does Fluidstack have an API?

Yes. APIs.io lists 7 APIs from Fluidstack, including Fluidstack Clusters API, Fluidstack Instances API and Fluidstack Invitations API, and 4 more.

Is there an OpenAPI specification for the Fluidstack API?

Yes. APIs.io indexes 7 OpenAPI specifications for Fluidstack, each linked for download from this page.

How do I authenticate with the Fluidstack API?

Fluidstack uses bearer-token authentication (http · 1 scheme). The details are profiled on APIs.io as Fluidstack Authentication.

Is the Fluidstack API ready for AI agents?

Fluidstack has a Kin Score of 27.5 out of 100 (thin) and an Agent Readiness score of 23.8 (agent-aware), scored by API Evangelist on 2026-11-06.

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