# Alice Bob

**Canonical:** https://apis.io/providers/alice--bob/  
**Website:** https://alice-bob.com/  
**APIs profiled:** 3

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.

## Kin Score — 51.4 / 100 (developing)

Scored 2026-08-12 under rubric 0.11.0. Trend: flat (+0.0 from 51.4).

| Facet | Score |
|---|---|
| Discoverability | 81.5 |
| Contract Quality | 50.7 |
| Governance | 11.5 |
| Operational Transparency | 36.8 |
| Developer Ergonomics | 66.8 |
| Commercial Clarity | 55.3 |

## Agent readiness — 36.3 (agent-ready)

| Dimension | Value |
|---|---|
| Spec Presence | yes |
| Agentic Access | no |
| MCP Server | derived |
| Auth Clarity | yes |
| Idempotency | no |
| Error Semantics | verified |
| OpenAPI Examples | no |
| Rate Limit Signal | no |
| Event Surface Described | no |
| Agent Skills | derived |
| Well Known Catalog | no |
| Consent Identity | no |
| Agent Card | no |
| Dry Run Mode | no |

## APIs (3)

- **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.

## MCP servers (1)

- **alice--bob-mcp.yml**

## Security (2)

- **Alice  Bob Authentication** — 1 scheme
- **Alice  Bob Domain Security** — TLSv1.3 · HSTS · DMARC

## Plans (1)

- **Alice  Bob Plans**

## Tags

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

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Profiled by [API Evangelist](https://apievangelist.com) and published on [APIs.io](https://apis.io/providers/alice--bob/). Scores are computed from the provider's own public artifacts under a published rubric.