Azure AI Speech

Azure AI Speech is a Microsoft cloud service that provides speech recognition, text‑to‑speech, speech translation, and custom voice models. It enables developers to integrate real‑time speech capabilities into applications, supporting dozens of languages and offering SDKs, REST APIs, and container deployments for scalable, secure, and compliant solutions.

Azure AI Speech is listed with 6 APIs on the APIs.io network, including Azure AI Speech API, Swagger API, and 4 more. Tagged areas include Cloud, Artificial Intelligence, Speech, Microsoft, and Services.

The Azure AI Speech catalog on APIs.io includes 1 JSON-LD context and 1 Spectral governance ruleset.

Azure AI Speech’s developer surface includes authentication, support, pricing, changelog, engineering blog, documentation, API reference, and 20 more developer resources.

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32.9/100 thin ▼ -5.1 Agent 18/100 agent aware Full breakdown ↓
scored 2026-11-06 · rubric v0.27.0 · Show this score on your site →

6 APIs

Cloud Artificial Intelligence Speech Microsoft Services

Kin Score

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

Composite quality — 32.9/100 · thin

Contract Quality 4.9 / 19

Developer Ergonomics 8.4 / 15

Access Clarity 2.4 / 15

Operational Transparency 1.5 / 10

Contract Governance 2.0 / 9

Discoverability 5.2 / 8

Regulatory Posture 3.4 / 15

Create-or-Update Ergonomics 0.0 / 10

Agent readiness — 18/100 · agent aware

Machine-Readable Contract 18 / 18

Agentic Access Contract 0 / 10

Documented Reversibility 0 / 6

MCP Server 0 / 12

Machine-Readable Auth 10 / 10

Idempotency 0 / 9

Stable Error Semantics 0 / 8

Request/Response Examples 7 / 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 5 / 5

Distinct Operations 0 / 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/.

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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
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)
Stable Error Semantics +8 pts — OpenAPI $refs a shared error schema across 4xx/5xx responses (verified), else common[].type includes ErrorCatalog / ErrorCodes / DeclineCodes
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)

11 more unmet checks in the Agent Readiness table above.

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

Contract Quality scores 25.9 — up to +18.5 composite points
Access Clarity scores 15.8 — up to +16.8 composite points
Operational Transparency scores 15.8 — up to +10.9 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/azure-ai-speech/apis.yml: open an issue on github.com/api-evangelist/azure-ai-speech 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 →

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 6

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

Azure AI Speech API

Speech service API providing speech-to-text, text-to-speech, translation, and custom voice models.

Azure AI Speech Azure AI Speech API

The Azure AI Speech API API from Azure AI Speech — 1 operation(s) for azure ai speech api.

Azure AI Speech Swagger API

The Swagger API from Azure AI Speech — 1 operation(s) for swagger.

Azure AI Speech Todoitems API

The Todoitems API from Azure AI Speech — 4 operation(s) for todoitems.

Azure AI Speech Weatherforecast API

The Weatherforecast API from Azure AI Speech — 1 operation(s) for weatherforecast.

Azure AI Speech To Dos API

The To Dos API from Azure AI Speech — 2 operation(s) for to dos.

Semantic Vocabularies 1

JSON-LD contexts and semantic vocabularies used across these APIs.

Azure Ai Speech Context

14 classes · 5 properties

JSON-LD

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs.

Azure AI Speech API Rules

10 rules · 8 errors 1 warnings 1 info

SPECTRAL

JSON Schema 6

Standalone JSON Schema definitions for this provider's data models.

GetResponse

3 properties

JSON SCHEMA

GetSwaggerV1SwaggerJsonResponse

1 properties

JSON SCHEMA

GetTodoitemsResponse

1 properties

JSON SCHEMA

GetWeatherforecastResponse

1 properties

JSON SCHEMA

PatchTodoitemsIdRequest

1 properties

JSON SCHEMA

PostTodoitemsRequest

1 properties

JSON SCHEMA

Security Posture 3

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

Azure Ai Speech Authentication

1 scheme

SECURITY

Azure Ai Speech Domain Security

TLSv1.3 · DMARC

SECURITY

Azure Ai Speech Vulnerability Disclosure

security.txt · contact published

SECURITY

Resources

Get Started 2

Portal, sign-up, and the first successful call

DeveloperPortal

DeveloperPortal

GettingStarted

GettingStarted

Documentation 2

Reference material describing how the API behaves

Documentation

Documentation

APIReference

APIReference

Agent Surfaces 2

MCP servers, agent skills, and machine-readable catalogs

WellKnown

WellKnown

LLMsTxt

LLMsTxt

Design & Contract 5

Pagination, idempotency, versioning, errors, and events

Spectral

JSONLD

Vocabulary

DataModel

Conformance

Build 3

SDKs, sample code, and the tooling you integrate with

SDKs

SDKs

Packages

Packages

GitHubOrganization

GitHubOrganization

Access & Security 5

Authentication, authorization, and security posture

SecurityTxt

SecurityTxt

Security

Security

Authentication

Authentication

VulnerabilityDisclosure

VulnerabilityDisclosure

DomainSecurity

DomainSecurity

Operate 2

Status, limits, changes, and where to get help

Support

Support

ChangeLog

ChangeLog

Commercial 2

Pricing, plans, and the legal terms of use

PrivacyPolicy

PrivacyPolicy

Pricing

Pricing

Company 2

The organization behind the API

Blog

Blog

Website

Website

Other 2

Properties that don't map to a standard resource type

Hosts

Hosts

Vendors

Vendors

Source (apis.yml)

aid: azure-ai-speech
name: Azure AI Speech
description: Azure AI Speech is a Microsoft cloud service that provides speech recognition, text‑to‑speech, speech translation,
  and custom voice models. It enables developers to integrate real‑time speech capabilities into applications, supporting
  dozens of languages and offering SDKs, REST APIs, and container deployments for scalable, secure, and compliant solutions.
url: https://raw.githubusercontent.com/api-evangelist/azure-ai-speech/refs/heads/main/apis.yml
x-type: company
x-source: harvest:tag-qc
x-tier: profiled
x-tier-reason: enrichment pass 2026-10-13 (modular-v1; was harvest)
x-coverage:
  state: unreadable
  reason: js-rendered-docs
  detail: The API documentation returns HTML pages and no machine‑readable OpenAPI spec.
  evidence:
  - url: https://speech.microsoft.com/azure-ai-speech/openapi.json
    status: 200
  checked: '2026-10-13'
accessModel:
  pricing: unknown
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Unknown
  confidence: low
  probe_state: unreadable
  source:
  - authentication
  - security
  generated: '2026-11-06'
  method: derived
image: https://azure.microsoft.com/svgs/logo.svg
specificationVersion: '0.20'
created: '2026-10-13'
modified: '2026-10-13'
tags:
- Cloud
- Artificial Intelligence
- Speech
- Microsoft
- Services
tags_raw:
- Cloud
- AI
- Speech
- Microsoft
- Service
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: SecurityTxt
  url: well-known/azure-ai-speech-www-security.txt
- type: WellKnown
  url: well-known/azure-ai-speech-well-known.yml
- type: Spectral
  url: rules/azure-ai-speech-rules.yml
- type: JSONLD
  url: json-ld/azure-ai-speech-context.jsonld
- type: Vocabulary
  url: vocabulary/azure-ai-speech-vocabulary.yml
- type: DataModel
  url: data-model/azure-ai-speech-data-model.yml
- type: Security
  url: https://www.microsoft.com/en-us/msrc/bounty-safe-harbor
- type: Authentication
  url: authentication/azure-ai-speech-authentication.yml
- type: Conformance
  url: conformance/azure-ai-speech-conformance.yml
- type: LLMsTxt
  url: llms/azure-ai-speech-llms.txt
- type: Hosts
  url: hosts/azure-ai-speech-hosts.yml
- type: Vendors
  url: vendors/azure-ai-speech-vendors.yml
- type: SDKs
  url: packages/azure-ai-speech-packages.yml
- type: Packages
  url: packages/azure-ai-speech-packages.yml
- type: Support
  url: https://support.microsoft.com/en-us
- type: PrivacyPolicy
  url: https://www.microsoft.com/privacy?icid=DSM_Footer_Company_Privacy
- type: Pricing
  url: https://azure.microsoft.com/en-us/pricing/
- type: GitHubOrganization
  url: https://github.com/community
- type: DeveloperPortal
  url: https://developer.microsoft.com/
- type: ChangeLog
  url: https://developer.microsoft.com/en-us/changelog
- type: Blog
  url: https://azure.microsoft.com/en-us/blog/
- type: VulnerabilityDisclosure
  url: security/azure-ai-speech-vulnerability-disclosure.yml
- type: DomainSecurity
  url: security/azure-ai-speech-domain-security.yml
- type: Website
  url: https://azure.microsoft.com/en-us/products/ai-foundry/tools/speech
- type: Documentation
  url: https://learn.microsoft.com/en-us/azure/ai-services/speech-service/
- type: APIReference
  url: https://learn.microsoft.com/en-us/azure/ai-services/speech-service/
- type: GettingStarted
  url: https://learn.microsoft.com/en-us/azure/ai-services/speech-service/get-started-speech-to-text
apis:
- name: Azure AI Speech API
  description: Speech service API providing speech-to-text, text-to-speech, translation, and custom voice models.
  humanURL: https://learn.microsoft.com/en-us/azure/ai-services/speech-service/
  baseURL: null
  aid: azure-ai-speech:azure-ai-speech-api
  properties:
  - type: OpenAPI
    url: openapi/_ae-authored/azure-ai-speech-openapi-generated.yml
    x-provenance: generated
- aid: azure-ai-speech:azure-ai-speech-azure-ai-speech-api-api
  name: Azure AI Speech Azure AI Speech API
  description: The Azure AI Speech API API from Azure AI Speech — 1 operation(s) for azure ai speech api.
  humanURL: https://learn.microsoft.com/en-us/azure/ai-services/speech-service/
  tags:
  - Azure AI Speech API
  properties:
  - type: OpenAPI
    url: openapi/azure-ai-speech-azure-ai-speech-api-api-openapi.yml
  - type: JSONSchema
    url: json-schema/azure-ai-speech-get-swagger-v1-swagger-json-response-schema.json
  - type: JSONSchema
    url: json-schema/azure-ai-speech-patch-todoitems-id-request-schema.json
  - type: JSONSchema
    url: json-schema/azure-ai-speech-get-weatherforecast-response-schema.json
  - type: JSONSchema
    url: json-schema/azure-ai-speech-get-response-schema.json
  - type: JSONSchema
    url: json-schema/azure-ai-speech-get-todoitems-response-schema.json
  - type: JSONSchema
    url: json-schema/azure-ai-speech-post-todoitems-request-schema.json
- aid: azure-ai-speech:azure-ai-speech-swagger-api
  name: Azure AI Speech Swagger API
  description: The Swagger API from Azure AI Speech — 1 operation(s) for swagger.
  humanURL: https://learn.microsoft.com/en-us/azure/ai-services/speech-service/
  tags:
  - Swagger
  properties:
  - type: OpenAPI
    url: openapi/azure-ai-speech-swagger-api-openapi.yml
  - type: JSONSchema
    url: json-schema/azure-ai-speech-get-swagger-v1-swagger-json-response-schema.json
  - type: JSONSchema
    url: json-schema/azure-ai-speech-patch-todoitems-id-request-schema.json
  - type: JSONSchema
    url: json-schema/azure-ai-speech-get-weatherforecast-response-schema.json
  - type: JSONSchema
    url: json-schema/azure-ai-speech-get-response-schema.json
  - type: JSONSchema
    url: json-schema/azure-ai-speech-get-todoitems-response-schema.json
  - type: JSONSchema
    url: json-schema/azure-ai-speech-post-todoitems-request-schema.json
- aid: azure-ai-speech:azure-ai-speech-todoitems-api
  name: Azure AI Speech Todoitems API
  description: The Todoitems API from Azure AI Speech — 4 operation(s) for todoitems.
  humanURL: https://learn.microsoft.com/en-us/azure/ai-services/speech-service/
  tags:
  - Todoitems
  properties:
  - type: OpenAPI
    url: openapi/azure-ai-speech-todoitems-api-openapi.yml
  - type: JSONSchema
    url: json-schema/azure-ai-speech-get-swagger-v1-swagger-json-response-schema.json
  - type: JSONSchema
    url: json-schema/azure-ai-speech-patch-todoitems-id-request-schema.json
  - type: JSONSchema
    url: json-schema/azure-ai-speech-get-weatherforecast-response-schema.json
  - type: JSONSchema
    url: json-schema/azure-ai-speech-get-response-schema.json
  - type: JSONSchema
    url: json-schema/azure-ai-speech-get-todoitems-response-schema.json
  - type: JSONSchema
    url: json-schema/azure-ai-speech-post-todoitems-request-schema.json
- aid: azure-ai-speech:azure-ai-speech-weatherforecast-api
  name: Azure AI Speech Weatherforecast API
  description: The Weatherforecast API from Azure AI Speech — 1 operation(s) for weatherforecast.
  humanURL: https://learn.microsoft.com/en-us/azure/ai-services/speech-service/
  tags:
  - Weatherforecast
  properties:
  - type: OpenAPI
    url: openapi/azure-ai-speech-weatherforecast-api-openapi.yml
  - type: JSONSchema
    url: json-schema/azure-ai-speech-get-swagger-v1-swagger-json-response-schema.json
  - type: JSONSchema
    url: json-schema/azure-ai-speech-patch-todoitems-id-request-schema.json
  - type: JSONSchema
    url: json-schema/azure-ai-speech-get-weatherforecast-response-schema.json
  - type: JSONSchema
    url: json-schema/azure-ai-speech-get-response-schema.json
  - type: JSONSchema
    url: json-schema/azure-ai-speech-get-todoitems-response-schema.json
  - type: JSONSchema
    url: json-schema/azure-ai-speech-post-todoitems-request-schema.json
- aid: azure-ai-speech:azure-ai-speech-to-dos-api
  name: Azure AI Speech To Dos API
  description: The To Dos API from Azure AI Speech — 2 operation(s) for to dos.
  humanURL: https://learn.microsoft.com/en-us/azure/ai-services/speech-service/
  tags:
  - To-Dos
  tags_raw:
  - To Dos
  properties:
  - type: OpenAPI
    url: openapi/azure-ai-speech-to-dos-api-openapi.yml
  - type: JSONSchema
    url: json-schema/azure-ai-speech-get-swagger-v1-swagger-json-response-schema.json
  - type: JSONSchema
    url: json-schema/azure-ai-speech-patch-todoitems-id-request-schema.json
  - type: JSONSchema
    url: json-schema/azure-ai-speech-get-weatherforecast-response-schema.json
  - type: JSONSchema
    url: json-schema/azure-ai-speech-get-response-schema.json
  - type: JSONSchema
    url: json-schema/azure-ai-speech-get-todoitems-response-schema.json
  - type: JSONSchema
    url: json-schema/azure-ai-speech-post-todoitems-request-schema.json
x-enrichment:
  date: '2026-10-13'
  status: enriched
  artifacts_added: 23
  pass: modular-v1
  engine: identity=local,contract=local,surfaces=local,docs=local,regulatory=local

Azure AI Speech API — frequently asked questions

Does Azure AI Speech have an API?

Yes. APIs.io lists 6 APIs from Azure AI Speech, including Azure AI Speech API, Azure AI Speech Azure AI Speech API and Azure AI Speech Swagger API, and 3 more.

Is there an OpenAPI specification for the Azure AI Speech API?

Yes. APIs.io indexes 6 OpenAPI specifications for Azure AI Speech, each linked for download from this page.

How do I authenticate with the Azure AI Speech API?

Azure AI Speech uses bearer-token authentication (1 scheme). The details are profiled on APIs.io as Azure Ai Speech Authentication.

Is the Azure AI Speech API ready for AI agents?

Azure AI Speech has a Kin Score of 32.9 out of 100 (thin) and an Agent Readiness score of 17.6 (agent-aware), scored by API Evangelist on 2026-11-06.

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