# Quandela

**Canonical:** https://apis.io/providers/quandela/  
**Website:** https://www.quandela.com  
**APIs profiled:** 2

Quandela is a Paris-region (Massy, France) photonic quantum computing company building modular, scalable, energy-efficient quantum systems driven by deterministic single-photon sources. Its hardware lineup includes Ascella (its first cloud-accessible system), Belenos (a 12-qubit second-generation machine), Canopus, and Mosaiq (its flagship prototyping platform), alongside Prometheus single-photon sources and the Entropy quantum random number generator. Quandela develops Perceval, the open-source Python framework for programming photonic quantum computers, distributed on PyPI as perceval-quandela with the perceval-interop bridges to Qiskit, QuTiP, cQASM and myQLM and the exqalibur native optimisation kernel. It operates Quandela Cloud, which — contrary to an earlier reading of this profile — DOES publish a real, anonymously readable REST contract: OpenAPI 3.0.3 at https://api.cloud.quandela.com/openapi.json, version v2.8.0-rc4, with 55 paths, 59 operations and 54 component schemas, plus a Quantum Toolbox sub-specification at /qt-openapi.json. The surface covers Perceval job submission (submit-then-poll, with the circuit carried as an SDK-serialised opaque payload), a self-service Cloud Job Token lifecycle with a per-platform credit ledger, five typed Quantum Toolbox primitives (Chemistry VQE, Custom VQE, CVaR VQE, Graph DSI, Graph Isomorphism) each with a paired cost estimator, and the Entropy QRNG, whose draws return CHSH and min-entropy certification. Authentication is a single declared bearer scheme covering two distinct credentials — an account token from account.quandela.com and a Cloud Job Token minted over the API. Quandela also runs a Quantum Acceleration Program for enterprise pilots in cybersecurity, pharma, chemistry, logistics, finance, energy and aerospace, and publishes a 2024-2030 roadmap to fault-tolerant quantum computing.

## Kin Score — 52.1 / 100 (developing)

Scored 2026-08-20 under rubric 0.12.0. Trend: flat (+0.0 from 52.1).

| Facet | Score |
|---|---|
| Discoverability | 87.0 |
| Contract Quality | 57.3 |
| Governance | 16.7 |
| Contract Governance | 16.7 |
| Operational Transparency | 71.1 |
| Developer Ergonomics | 61.3 |
| Commercial Clarity | 27.6 |
| Access Clarity | 27.6 |

## Agent readiness — 42.4 (agent-ready)

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

## Access

Public API, undisclosed pricing — onboarding: unknown, pricing: unknown, trial: yes (confidence: medium).

## APIs (2)

- **Quandela Cloud API** — The core Quandela Cloud REST surface — Perceval job submission, status/result polling, cancel and rerun, plus the full Cloud Job Token lifecycle (create, list, read, update, rev...
- **Quandela Quantum Toolbox API** — Quandela's pre-built quantum primitives, published as a separate specification at https://api.cloud.quandela.com/qt-openapi.json. Five fully typed algorithms — Chemistry VQE, Cu...

## Agentic access (1)

- **Quandela Agentic Access** — 59 operations · 31 acting · 3 human-in-the-loop

## Security (2)

- **Quandela Authentication** — http · 1 scheme
- **Quandela Domain Security** — TLSv1.3 · DMARC

## Plans (1)

- **Quandela Plans Pricing**

## Tags

Quantum Computing, Photonic Quantum, Photonics, Single Photon Sources, Quantum Hardware, Quantum Cloud, QPU, Perceval, Python SDK, Quantum Random Number Generation, Quantum Simulation, Variational Quantum Algorithms, Quantum Chemistry, Graph Algorithms, Job Orchestration, Open-Source, France

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