Alice Bob

Alice & Bob is a quantum computing company headquartered in Paris with a presence in Boston, founded in 2020, building a universal fault-tolerant quantum computer on cat qubits — superconducting qubits that are intrinsically protected against bit-flip errors. Its commercial developer surface is Felis Cloud, a Quantum Computing as a Service (QCaaS) product that executes quantum circuits on Boson 4 cat-qubit QPUs hosted in Alice & Bob's own premises and on cloud-hosted physical and logical qubit emulators. Felis Cloud is reached through a public REST API (jobs, targets, availability and health) that accepts circuits in QIR format, and through the open-source qiskit-alice-bob-provider Qiskit provider that wraps it.

Alice Bob publishes 3 API contracts indexed on the APIs.io network: Health API, Jobs API, and Targets API. Tagged areas include Company, Quantum Computing, Quantum, Cloud Computing, and Emulation.

The Alice Bob catalog on APIs.io includes 1 Spectral governance ruleset.

Alice Bob’s developer surface includes documentation, API reference, getting-started guide, support, pricing, signup flow, changelog, and 21 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

50.1/100 developing ▬ flat Agent 26/100 agent aware Front door AI 3/6 light Heartbeat 100/100 alive saas Full breakdown ↓
scored 2026-11-06 · rubric v0.27.0 · Show this score on your site →

AccessPaid

1 published contract 2 Agent Skills

Company Quantum Computing Quantum Cloud Computing Emulation Developer Tools Compute Hardware Research Qiskit QIR

Kin Score

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

Composite quality — 50.1/100 · developing

Contract Quality 8.9 / 19

Developer Ergonomics 10.6 / 15

Access Clarity 7.9 / 15

Operational Transparency 3.3 / 10

Contract Governance 1.6 / 9

Discoverability 5.5 / 8

Regulatory Posture 2.5 / 15

Create-or-Update Ergonomics 0.0 / 10

Agent readiness — 26/100 · agent aware

Machine-Readable Contract 18 / 18

Agentic Access Contract 0 / 10

Documented Reversibility 6 / 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 5 / 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 5 / 5

Distinct Operations 3 / 3

MCP Tool Quality 6 / 6

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 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/.

Show this score on your site.

It updates itself when the score changes. Paste this where you link to your API docs:

<a href="https://apis.io/providers/alice--bob/"><img src="https://apis.io/badge/alice--bob/card.svg" alt="Alice Bob on APIs.io — Kin Score by API Evangelist"></a>

Other styles, a README pill and a shields.io endpoint are on the badge page.

Raise your score.

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
Agentic Access Contract +10 pts — agentic_access artifact present (x-agentic-access), graded by author
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

8 more unmet checks in the Agent Readiness table above.

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

Contract Quality scores 47.6 — up to +13.1 composite points
Contract Governance scores 18.2 — up to +9.8 composite points
Access Clarity scores 52.6 — up to +9.5 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/alice--bob/apis.yml: open an issue on github.com/api-evangelist/alice--bob 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
Quantum Computing (hardware, cloud and software)	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 3

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

Alice Bob Health API

The Health API from Alice Bob — 1 operation(s) for health.

Alice Bob Jobs API

The Jobs API from Alice Bob — 7 operation(s) for jobs.

Alice Bob Targets API

The Targets API from Alice Bob — 3 operation(s) for targets.

Open Collections 3

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

Felis Cloud • API Reference Health API

OPEN COLLECTION

Felis Cloud • API Reference Jobs API

OPEN COLLECTION

Felis Cloud • API Reference Targets API

OPEN COLLECTION

Agent Skills 2

Packaged agent skills for driving this provider's APIs from an AI assistant.

Run a quantum circuit on Felis Cloud

AGENT SKILL

Select and check a Felis Cloud backend

AGENT SKILL

Alice Bob API pricing

Prices published by Alice Bob, read 2026-10-28 from felis.alice-bob.com/docs/felis_cloud/about_felis_cloud/.

Plan	Price
Boson 4 QPU	1 free hour every month, then $5000/hour Includes: 1 free hour every month
Emulators	1 free hour every month, then $25/hour Includes: 1 free hour every month

Plan details, limits and sources →

Billed by: hour · FinOps profile →

Pricing Plans 1

Published pricing tiers and plan structures.

Alice Bob Plans

2 plans

PLANS

Service Levels 1

Uptime the provider promises or reports, as SLA4OAI. Read from its own pages; APIs.io runs no monitors.

Alice Bob

SLA

FinOps 1

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

Alice Bob Finops

FINOPS

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs.

Alice Bob API Rules

44 rules · 39 errors 4 warnings 1 info

SPECTRAL

OpenAPI Overlays 1

Overlays applied on top of this provider's contracts. Each card says who wrote it: a document the provider publishes, or one API Evangelist derived or generated.

Alice Bob Felis Cloud Overlay

20 actions · documentation · alice--bob-felis-cloud-openapi.json

GENERATED

Security Posture 2

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

Alice Bob Authentication

1 scheme

SECURITY

Alice Bob Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Resources

Get Started 5

Portal, sign-up, and the first successful call

DeveloperPortal

DeveloperPortal

GettingStarted

GettingStarted

SignUp

SignUp

Login

Sandbox

Sandbox

Documentation 2

Reference material describing how the API behaves

Documentation

Documentation

APIReference

APIReference

Agent Surfaces 3

MCP servers, agent skills, and machine-readable catalogs

X-MCPServerCandidate

X-MCPServerCandidate

LLMsTxt

LLMsTxt

AgentSkill

AgentSkill

Design & Contract 5

Pagination, idempotency, versioning, errors, and events

Conventions

Lifecycle

Conformance

ErrorCatalog

DataModel

Build 3

SDKs, sample code, and the tooling you integrate with

GitHubOrganization

GitHubOrganization

Packages

Packages

SDKs

SDKs

Access & Security 2

Authentication, authorization, and security posture

DomainSecurity

DomainSecurity

Authentication

Authentication

Operate 3

Status, limits, changes, and where to get help

Support

Support

StatusPage

StatusPage

ChangeLog

ChangeLog

Commercial 2

Pricing, plans, and the legal terms of use

Pricing

Pricing

Plans

Plans

Company 1

The organization behind the API

Website

Website

Other 2

Properties that don't map to a standard resource type

Overlay

Overlay

SecondaryMarketListing

SecondaryMarketListing

Source (apis.yml)

aid: alice--bob
name: Alice Bob
description: Alice & Bob is a quantum computing company headquartered in Paris with a presence in Boston, founded in 2020,
  building a universal fault-tolerant quantum computer on cat qubits — superconducting qubits that are intrinsically protected
  against bit-flip errors. Its commercial developer surface is Felis Cloud, a Quantum Computing as a Service (QCaaS) product
  that executes quantum circuits on Boson 4 cat-qubit QPUs hosted in Alice & Bob's own premises and on cloud-hosted physical
  and logical qubit emulators. Felis Cloud is reached through a public REST API (jobs, targets, availability and health) that
  accepts circuits in QIR format, and through the open-source qiskit-alice-bob-provider Qiskit provider that wraps it.
deliveryModel:
  model: saas
  open_source: false
  commercial: true
  callable_host: false
  label: Hosted service · you call their endpoint
  confidence: medium
  source:
  - openapi
  - pricing
  generated: '2026-08-28'
  method: derived
accessModel:
  pricing: paid
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Paid
  confidence: high
  source:
  - plans
  - authentication
  - security
  - sandbox
  generated: '2026-11-06'
  method: derived
image: https://avatars.githubusercontent.com/u/72556371?v=4
url: https://raw.githubusercontent.com/api-evangelist/alice--bob/refs/heads/main/apis.yml
x-type: company
x-source: harvest:secondary-market
x-tier: profiled
x-tier-reason: enrichment-pipeline
specificationVersion: '0.23'
created: '2026-08-06'
modified: '2026-08-06'
tags:
- Company
- Quantum Computing
- Quantum
- Cloud Computing
- Emulation
- Developer Tools
- Compute
- Hardware
- Research
- Qiskit
- QIR
apis:
- aid: alice--bob:alice--bob-health-api
  name: Alice Bob Health API
  description: The Health API from Alice Bob — 1 operation(s) for health.
  humanURL: https://felis.alice-bob.com/docs/reference/the_api/
  baseURL: https://api-gcp.alice-bob.com/v1
  tags:
  - Health
  properties:
  - type: OpenAPI
    url: openapi/alice--bob-health-api-openapi.yml
  - type: Documentation
    url: https://felis.alice-bob.com/docs/
  - type: APIReference
    url: https://api-gcp.alice-bob.com/reference
- aid: alice--bob:alice--bob-jobs-api
  name: Alice Bob Jobs API
  description: The Jobs API from Alice Bob — 7 operation(s) for jobs.
  humanURL: https://felis.alice-bob.com/docs/reference/the_api/
  baseURL: https://api-gcp.alice-bob.com/v1
  tags:
  - Job
  tags_raw:
  - Jobs
  properties:
  - type: OpenAPI
    url: openapi/alice--bob-jobs-api-openapi.yml
  - type: Documentation
    url: https://felis.alice-bob.com/docs/
  - type: APIReference
    url: https://api-gcp.alice-bob.com/reference
- aid: alice--bob:alice--bob-targets-api
  name: Alice Bob Targets API
  description: The Targets API from Alice Bob — 3 operation(s) for targets.
  humanURL: https://felis.alice-bob.com/docs/reference/the_api/
  baseURL: https://api-gcp.alice-bob.com/v1
  tags:
  - Targets
  properties:
  - type: OpenAPI
    url: openapi/alice--bob-targets-api-openapi.yml
  - type: Documentation
    url: https://felis.alice-bob.com/docs/
  - type: APIReference
    url: https://api-gcp.alice-bob.com/reference
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: X-MCPServerCandidate
  url: mcp/alice--bob-mcp.yml
  note: 'Renamed from MCPServer 2026-09-03 (roadmap#247): the manifest self-describes as status: candidate — a tool list derived
    from the published API contracts, not an existing server. The scorer already read the manifest and reported mcp_server
    correctly; the MCPServer type was crediting the artifact-type surfaces with a server that does not exist.'
- type: Overlay
  url: overlays/alice--bob-felis-cloud-overlay.yaml
- type: DomainSecurity
  url: security/alice--bob-domain-security.yml
- type: Website
  url: https://alice-bob.com/
- type: SecondaryMarketListing
  url: https://www.hiive.com/securities/alice--bob-stock
- type: DeveloperPortal
  url: https://api-gcp.alice-bob.com/console/
- type: Documentation
  url: https://felis.alice-bob.com/docs/
- type: APIReference
  url: https://api-gcp.alice-bob.com/reference
- type: GettingStarted
  url: https://felis.alice-bob.com/docs/getting_started/install_the_qiskit_provider/
- type: Support
  url: https://felis.alice-bob.com/docs/contact_us/
- type: GitHubOrganization
  url: https://github.com/Alice-Bob-SW
- type: Pricing
  url: https://felis.alice-bob.com/docs/felis_cloud/about_felis_cloud/
- type: SignUp
  url: https://console.cloud.google.com/marketplace/product/cloud-prod-0/felis-cloud
- type: Login
  url: https://api-gcp.alice-bob.com/console/
- type: StatusPage
  url: https://api-gcp.alice-bob.com/console/status
- type: ChangeLog
  url: changelog/alice--bob-changelog.yml
- type: Packages
  url: packages/alice--bob-packages.yml
- type: SDKs
  url: packages/alice--bob-packages.yml
- type: Sandbox
  url: sandbox/alice--bob-sandbox.yml
- type: Plans
  url: plans/alice--bob-plans.yml
- type: LLMsTxt
  url: llms/alice--bob-llms.txt
- type: Authentication
  url: authentication/alice--bob-authentication.yml
- type: Conventions
  url: conventions/alice--bob-conventions.yml
- type: Lifecycle
  url: lifecycle/alice--bob-lifecycle.yml
- type: Conformance
  url: conformance/alice--bob-conformance.yml
- type: ErrorCatalog
  url: errors/alice--bob-problem-types.yml
- type: DataModel
  url: data-model/alice--bob-data-model.yml
- type: AgentSkill
  url: skills/_index.yml
x-enrichment:
  date: '2026-08-06'
  status: enriched
  artifacts_added: 19
  pass: local-v1

Alice Bob API — frequently asked questions

Does Alice Bob have an API?

Yes. APIs.io lists 3 APIs from Alice Bob, including Alice Bob Health API, Alice Bob Jobs API and Alice Bob Targets API.

Is there an OpenAPI specification for the Alice Bob API?

Yes. APIs.io indexes 3 OpenAPI specifications for Alice Bob, each linked for download from this page.

How do I authenticate with the Alice Bob API?

Alice Bob uses bearer-token authentication (1 scheme). The details are profiled on APIs.io as Alice Bob Authentication.

How much does the Alice Bob API cost?

Alice Bob publishes its prices; its Boson 4 QPU plan is 1 free hour every month, then $5000/hour as of 2026-10-28. APIs.io lists 2 pricing plans for Alice Bob, with each plan's price, limits and inclusions under Pricing on this page.

Is the Alice Bob API ready for AI agents?

Alice Bob has a Kin Score of 50.1 out of 100 (developing) and an Agent Readiness score of 26.3 (agent-aware), scored by API Evangelist on 2026-11-06.

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/alice--bob"

All providers

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

Every operation they expose

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

How their score was established

curl "https://apis.io/api/v1/providers/alice--bob/evidence"

Calls without X-API-Key need no key. Calls with it need a paid plan — get a key.

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.