# Nuance

**Canonical:** https://apis.io/providers/nuance/  
**Website:** https://www.nuance.com  
**APIs profiled:** 5

Nuance Communications (NASDAQ: NUAN) is a conversational-AI and speech-recognition pioneer, acquired by Microsoft in 2022. Its self-service developer platform, Nuance Mix, provides tooling and runtime services for building conversational applications: Automatic Speech Recognition (ASRaaS), Natural Language Understanding (NLUaaS), Dialog management (DLGaaS), Text-to-Speech (TTSaaS) and grammar-based recognition (NRaaS) — all exposed as gRPC/protobuf runtime services secured with OAuth 2.0 client-credentials. Design-time tooling (Mix.nlu, Mix.dialog) and a first-party CLI (@nuance-mix/mix-cli) round out the platform. Nuance also ships Dragon speech solutions, including Dragon Medical SpeechKit for healthcare voice capture.

## Kin Score — 23.6 / 100 (emerging)

Scored 2026-08-17 under rubric 0.11.0. Trend: flat (+0.0 from 23.6).

| Facet | Score |
|---|---|
| Discoverability | 81.5 |
| Contract Quality | 0.0 |
| Governance | 3.1 |
| Operational Transparency | 5.3 |
| Developer Ergonomics | 60.9 |
| Commercial Clarity | 13.2 |

Regulatory layer — **Health**: 21.3 (matched via tags).

## Agent readiness — 11.7 (agent-aware)

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

## Access

Self-serve signup — onboarding: self-serve, pricing: unknown, trial: no (confidence: medium).

## APIs (5)

- **Nuance Mix ASRaaS gRPC API** — Automatic Speech Recognition as a Service — convert speech to text in real time over a gRPC streaming API (Recognizer service), with wordsets, training and ForgetMe operations. ...
- **Nuance Mix NLUaaS gRPC API** — Natural Language Understanding as a Service — interpret user input against NLU models built in Mix.nlu, over a gRPC Runtime service.
- **Nuance Mix DLGaaS gRPC API** — Dialog as a Service — execute conversational dialog flows authored in Mix.dialog over a gRPC Dialog service.
- **Nuance Mix TTSaaS gRPC API** — Text-to-Speech as a Service — turn text into synthesized speech (including neural voices) over a gRPC Synthesizer service.
- **Nuance Mix NRaaS gRPC API** — Grammar-based recognition as a Service — grammar-driven speech recognition over a gRPC runtime service.

## MCP servers (1)

- **nuance-mcp.yml**

## Security (2)

- **Nuance Authentication** — oauth2 · 1 scheme
- **Nuance Domain Security** — TLSv1.2 · HSTS · DMARC

## Tags

Company, Speech Recognition, Conversational AI, Natural Language Understanding, Text to Speech, Speech Synthesis, Voice, Dialog, gRPC, Healthcare AI

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