Cobalt Speech

Cobalt Speech provides speech‑to‑text, text‑to‑speech, and voice‑biometrics APIs that enable developers to add real‑time transcription, synthetic speech, and speaker verification to applications. Their platform offers high accuracy, low latency, and supports multiple languages and audio formats, targeting enterprises, contact‑center solutions, and accessibility tools.

Cobalt Speech is listed with 2 APIs on the APIs.io network. Tagged areas include Company, Speech, AI, Transcription, and Voice.

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

Cobalt Speech’s developer surface includes authentication, support, getting-started guide, documentation, engineering blog, and 16 more developer resources.

🌐 Visit website📡 Profile data on GitHub
26.9/100 thin Agent 20/100 agent aware Full breakdown ↓
scored 2026-10-31 · rubric v0.25.0 · Show this score on your site →
2 APIs
CompanySpeechAITranscriptionVoice

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-10-31 · rubric v0.25.0
Composite quality — 26.9/100 · thin
Contract Quality 4.0 / 21
Developer Ergonomics 6.9 / 17
Access Clarity 3.6 / 17
Operational Transparency 0.0 / 11
Contract Governance 2.2 / 10
Discoverability 5.2 / 9
Regulatory Posture 3.4 / 15
Agent readiness — 20/100 · agent aware
Machine-Readable Contract 18 / 18
Agentic Access Contract 0 / 10
Documented Reversibility 0 / 6
MCP Server 12 / 12
Machine-Readable Auth 10 / 10
Idempotency 0 / 9
Stable Error Semantics 0 / 8
Request/Response Examples 0 / 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 3 / 3
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 could not be measured. We hold no machine-readable contract for this provider to read, so there is nothing to measure a write surface against. Excluded rather than scored zero: never-measured and measured-empty are different facts. Publishing an OpenAPI is what makes this facet — and several others — scorable at all.
The six quality facets above are damped to 85 points between them, because the conditional facet above carries the other 15. That is why each facet's contribution is shown against a damped maximum: raising a quality facet moves the composite by 85% of its nominal weight, not 100%. The full arithmetic is at apis.io/rating/.
Show this score on your site. Kin Score badge preview for Cobalt Speech It updates itself when the score changes. Paste this where you link to your API docs: 
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Agent readiness — checks not met, largest first (exact, from this profile):
  • 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
  • Stable Error Semantics +8 pts — OpenAPI $refs a shared error schema across 4xx/5xx responses (verified), else common[].type includes ErrorCatalog / ErrorCodes / DeclineCodes
  • 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
10 more unmet checks in the Agent Readiness table above.
Kin Score — facets with the most composite points still available (weight × headroom):
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/cobalt-speech/apis.yml: open an issue on github.com/api-evangelist/cobalt-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 →

APIs 2

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

Cobalt Speech API

Speech-to-text, text-to-speech, and voice biometrics APIs as documented.

Cobalt Speech API

Cobalt Speech API as documented publicly: 4 operations. Contract generated from the documentation by API Evangelist (2026-10-27); not the provider's own document.

Semantic Vocabularies 1

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

Cobalt Speech Context

2 classes · 9 properties

JSON-LD

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs.

Cobalt Speech API Rules

11 rules · 9 errors 1 warnings 1 info

SPECTRAL

JSON Schema 2

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

GetApiCaptV1ListModelsResponse

7 properties

JSON SCHEMA

PostApiCaptV1EvaluateRequest

2 properties

JSON SCHEMA

Security Posture 2

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

Cobalt Speech Authentication

1 scheme

SECURITY

Cobalt Speech Domain Security

TLSv1.3 · HSTS

SECURITY

Resources

Get Started 1

Portal, sign-up, and the first successful call

GettingStarted
GettingStarted

Documentation 1

Reference material describing how the API behaves

Documentation
Documentation

Design & Contract 5

Pagination, idempotency, versioning, errors, and events

Spectral
Spectral
 JSONLD
JSONLD
 Vocabulary
Vocabulary
 DataModel
DataModel
 Conformance
Conformance

Access & Security 2

Authentication, authorization, and security posture

Authentication
Authentication
 DomainSecurity
DomainSecurity

Operate 1

Status, limits, changes, and where to get help

Support
Support

Commercial 2

Pricing, plans, and the legal terms of use

TermsOfService
TermsOfService
 PrivacyPolicy
PrivacyPolicy

Company 4

The organization behind the API

Newsroom
Newsroom
 Website
Website
 Blog
Blog
 Website
Website

Other 5

Properties that don't map to a standard resource type

Protobuf
Protobuf
 Protobuf
Protobuf
 Hosts
Hosts
 Vendors
Vendors
 Leadership
Leadership

Source (apis.yml)

apis.yml Raw ↑ 
aid: cobalt-speech
name: Cobalt Speech
description: Cobalt Speech provides speech‑to‑text, text‑to‑speech, and voice‑biometrics APIs that enable developers to add
  real‑time transcription, synthetic speech, and speaker verification to applications. Their platform offers high accuracy,
  low latency, and supports multiple languages and audio formats, targeting enterprises, contact‑center solutions, and accessibility
  tools.
url: https://raw.githubusercontent.com/api-evangelist/cobalt-speech/refs/heads/main/apis.yml
x-type: company
x-source: harvest:new-submission
x-tier: profiled
x-tier-reason: enrichment pass 2026-10-27 (modular-v1; was harvest)
specificationVersion: '0.20'
created: '2026-10-27'
modified: '2026-10-27'
tags:
- Company
- Speech
- AI
- Transcription
- Voice
image: https://cobaltspeech.com/__l5e/assets-v1/cobalt-wordmark.png
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: Spectral
  url: rules/cobalt-speech-rules.yml
- type: JSONLD
  url: json-ld/cobalt-speech-context.jsonld
- type: Vocabulary
  url: vocabulary/cobalt-speech-vocabulary.yml
- type: DataModel
  url: data-model/cobalt-speech-data-model.yml
- type: Authentication
  url: authentication/cobalt-speech-authentication.yml
- type: Conformance
  url: conformance/cobalt-speech-conformance.yml
- type: Protobuf
  url: grpc/voicegen_v1.proto
- type: Protobuf
  url: grpc/transcribe_v5.proto
- type: Hosts
  url: hosts/cobalt-speech-hosts.yml
- type: Vendors
  url: vendors/cobalt-speech-vendors.yml
- type: Support
  url: https://cobaltspeech.com/support
- type: Newsroom
  url: https://cobaltspeech.com/news
- type: Leadership
  url: https://cobaltspeech.com/leadership
- type: GettingStarted
  url: https://docs.cobaltspeech.com/docs/asr/transcribe/client_quickstart/
- type: Documentation
  url: https://docs.cobaltspeech.com/
- type: Website
  url: https://cobaltspeech.com/
- type: Blog
  url: https://cobaltspeech.com/blog
- type: TermsOfService
  url: https://cobaltspeech.com/terms
- type: PrivacyPolicy
  url: https://cobaltspeech.com/privacy
- type: DomainSecurity
  url: security/cobalt-speech-domain-security.yml
- type: Website
  url: https://cobaltspeech.com/
apis:
- name: Cobalt Speech API
  description: Speech-to-text, text-to-speech, and voice biometrics APIs as documented.
  humanURL: https://docs.cobaltspeech.com
  aid: cobalt-speech:cobalt-speech-api-2
- aid: cobalt-speech:cobalt-speech-api
  name: Cobalt Speech API
  description: 'Cobalt Speech API as documented publicly: 4 operations. Contract generated from the documentation by API Evangelist
    (2026-10-27);

    not the provider''s own document.'
  humanURL: https://docs.cobaltspeech.com/docs/speech_assessment/capt/get_started
  properties:
  - type: OpenAPI
    url: openapi/_ae-authored/cobalt-speech-openapi-generated.yml
    x-provenance: generated
  - type: JSONSchema
    url: json-schema/cobalt-speech-get-api-capt-v1-list-models-response-schema.json
  - type: JSONSchema
    url: json-schema/cobalt-speech-post-api-capt-v1-evaluate-request-schema.json
x-submission-probe: 200 2026-10-26
x-enrichment:
  date: '2026-10-27'
  status: enriched
  artifacts_added: 20
  pass: modular-v1
  engine: identity=local,contract=local,surfaces=local,docs=local,regulatory=local

Cobalt Speech API — frequently asked questions

Does Cobalt Speech have an API?

Yes. APIs.io lists 2 APIs from Cobalt Speech, including Cobalt Speech API and Cobalt Speech API.

Is there an OpenAPI specification for the Cobalt Speech API?

Yes. APIs.io indexes 1 OpenAPI specification for Cobalt Speech, each linked for download from this page.

How do I authenticate with the Cobalt Speech API?

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

Is the Cobalt Speech API ready for AI agents?

Cobalt Speech has a Kin Score of 26.9 out of 100 (thin) and an Agent Readiness score of 20.3 (agent-aware), scored by API Evangelist on 2026-10-31.

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