Speko

Speko is a voice-AI gateway - "one API for the whole voice stack." It continuously benchmarks speech-to-text, LLM, and text-to-speech providers and routes every call to the best provider for your language, latency, and cost intent, with transparent server-side failover. Developers ship voice agents in minutes over one REST API (no provider keys required, or bring your own), deploying to phone numbers, web widgets, or one-shot transcribe/synthesize/ complete calls. Speko is a Y Combinator (S26) company based in San Francisco, founded by Beknazar Abdikamalov. The platform advertises SOC 2 Type II, HIPAA, and GDPR posture and ships TypeScript and Python SDKs, a browser SDK, a LiveKit adapter, and a hosted MCP server.

Speko publishes 4 API contracts indexed on the APIs.io network, including Agents API, Providers API, Telephony API, and 1 more. Tagged areas include Voice, Voice AI, Speech-to-Text, Text-to-Speech, and LLM.

The Speko catalog on APIs.io includes 1 event-driven AsyncAPI specification and 1 Spectral governance ruleset.

Speko’s developer surface includes documentation, API reference, getting-started guide, pricing, signup flow, engineering blog, support, and 18 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

59.7/100 strong ▬ flat Agent 61/100 agent native Front door AI 4/6 moderate Heartbeat 100/100 alive saas Full breakdown ↓
scored 2026-11-06 · rubric v0.27.0 · Show this score on your site →

AccessPaid

1 published contract 1 MCP Servers 3 Agent Skills

Voice Voice AI Speech-to-Text Text-to-Speech LLM Telephony API Gateway Conversational AI Developer Tools AI Infrastructure

Kin Score

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

Composite quality — 59.7/100 · strong

Contract Quality 11.4 / 19

Developer Ergonomics 9.9 / 15

Access Clarity 11.8 / 15

Operational Transparency 2.6 / 10

Contract Governance 2.9 / 9

Discoverability 5.6 / 8

Regulatory Posture 4.1 / 15

Create-or-Update Ergonomics 0.0 / 10

Agent readiness — 61/100 · agent native

Machine-Readable Contract 18 / 18

Agentic Access Contract 10 / 10

Documented Reversibility 6 / 6

MCP Server 12 / 12

Machine-Readable Auth 10 / 10

Idempotency 9 / 9

Stable Error Semantics 8 / 8

Request/Response Examples 7 / 7

Rate-Limit Signaling 0 / 7

Typed Event Surface 6 / 6

Agent Skills 5 / 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 6 / 6

Protected Resource Metadata 5 / 5

Registration Without a Human 6 / 6

Agentic Commerce Well-Known Document 0 / 5

Pagination 5 / 5

Distinct Operations 3 / 3

MCP Tool Quality 6 / 6

Regulatory Posture applies to this provider. Its tags matched the AI & Biometrics 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):

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)
Agentic Commerce Well-Known Document +5 pts — a parsing /.well-known/ucp.json or acp.json declaring a version and at least one service, OR (0.27) a live x402 payment challenge from _data/x402-adoption.json — `self` when its endpoints are on the provider's own domain, `platform` when they are on a vendor's
Dry-Run / Simulate Mode +4 pts — OpenAPI: destructive operations expose a dry_run / simulate / preview / validate_only parameter
Well-Known Catalog +4 pts — common[].type includes WellKnown, APICatalog, or api-catalog
Consent & Bot Identity +3 pts — common[].type includes AIPREF, ContentSignal, WebBotAuth, or HTTPMessageSignatures

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

Contract Quality scores 61.0 — up to +9.8 composite points
Operational Transparency scores 26.3 — up to +9.6 composite points
Contract Governance scores 31.8 — up to +8.2 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/speko/apis.yml: open an issue on github.com/api-evangelist/speko 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 4

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.

Model Context Protocol (MCP)

measured — observed by APIs.io (verified)

OAuth 2.0 Protected Resource Metadata

measured — observed by APIs.io (verified)

Dynamic Client Registration

measured — observed by APIs.io (published)

OpenAPI

measured — observed by APIs.io (published)

APIs 4

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

Speko Agents API

The Agents API from Speko — 2 operation(s) for agents.

Speko Providers API

The Providers API from Speko — 1 operation(s) for providers.

Speko Telephony API

The Telephony API from Speko — 22 operation(s) for telephony.

Speko Voice API

The Voice API from Speko — 8 operation(s) for voice.

Open Collections 4

Open, tool-agnostic API collections (OpenAPI-derived and Bruno).

Speko Agents API

OPEN COLLECTION

Speko Agents Providers API

OPEN COLLECTION

Speko Agents Telephony API

OPEN COLLECTION

Speko Agents Voice API

OPEN COLLECTION

MCP Servers 1

Model Context Protocol servers that expose these APIs to AI agents.

Speko MCP Server

Remote MCP server at mcp.speko.ai over HTTP.

MCP SERVER

Agent Skills 3

Packaged agent skills for driving this provider's APIs from an AI assistant.

Create a voice agent and start a browser session

AGENT SKILL

Transcribe, complete, and synthesize with automatic provider routing

AGENT SKILL

Place an outbound phone call and pull the call report

AGENT SKILL

Speko API pricing

Prices published by Speko, read 2026-10-07 from speko.ai/pricing.

Plan	Price
Router	+5% on the provider's rate Includes: Speech-to-text, LLM, TTS: The provider's published rate; Measured selection and pre-response failove
Speko infra	$0.09 per minute Includes: Speech-to-text, LLM, TTS included; Measured selection and pre-response failover; Public preview; Ema
Enterprise	Custom locked for the term Includes: Included STT/LLM/TTS; plus deployment reviews; access by contract; dedicated support; SLA in the con
Signup credit	$10 in signup credit applies to every account.

Plan details, limits and sources →

Billed by: cent on provider rate · FinOps profile →

Pricing Plans 1

Published pricing tiers and plan structures.

Speko Plans Pricing

4 plans

PLANS

Service Levels 1

Uptime the provider promises or reports, as SLA4OAI. Read from its own pages; APIs.io runs no monitors.

Speko

SLA

FinOps 1

Cost, billing, and metering signals for API financial operations.

Speko Finops

FINOPS

Event Specifications 1

AsyncAPI definitions for this provider's event-driven and streaming APIs.

Speko Webhooks

ASYNCAPI

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs.

Speko API Rules

60 rules · 48 errors 10 warnings 2 info

SPECTRAL

OpenAPI Overlays 1

Overlays applied on top of this provider's contracts. Each card says who wrote it: a document the provider publishes, or one API Evangelist derived or generated.

Speko Openapi Overlay

3 actions · update · speko-openapi-original.json

DERIVED

Security Posture 2

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

Speko Authentication

http · 1 scheme

SECURITY

Speko Domain Security

TLSv1.3

SECURITY

Agentic Access 1

Recommended x-agentic-access execution contracts for AI agents.

Speko Agentic Access

40 operations · 22 acting · 1 human-in-the-loop

40 operations · 22 acting

AGENTIC

Resources

Get Started 3

Portal, sign-up, and the first successful call

DeveloperPortal

DeveloperPortal

GettingStarted

GettingStarted

SignUp

SignUp

Documentation 2

Reference material describing how the API behaves

Documentation

Documentation

APIReference

APIReference

Agent Surfaces 3

MCP servers, agent skills, and machine-readable catalogs

MCPServer

MCPServer

AgentSkill

AgentSkill

AgenticAccess

AgenticAccess

Design & Contract 2

Pagination, idempotency, versioning, errors, and events

Lifecycle

Lifecycle

Conformance

Conformance

Build 3

SDKs, sample code, and the tooling you integrate with

GitHubOrganization

GitHubOrganization

Packages

Packages

SDKs

SDKs

Access & Security 3

Authentication, authorization, and security posture

Compliance

Compliance

Authentication

Authentication

DomainSecurity

DomainSecurity

Operate 2

Status, limits, changes, and where to get help

StatusPage

StatusPage

Support

Support

Commercial 4

Pricing, plans, and the legal terms of use

Plans

Pricing

TermsOfService

PrivacyPolicy

Company 2

The organization behind the API

Website

Website

Blog

Blog

Other 1

Properties that don't map to a standard resource type

Overlay

Overlay

Source (apis.yml)

aid: speko
name: Speko
description: Speko is a voice-AI gateway - "one API for the whole voice stack." It continuously benchmarks speech-to-text,
  LLM, and text-to-speech providers and routes every call to the best provider for your language, latency, and cost intent,
  with transparent server-side failover. Developers ship voice agents in minutes over one REST API (no provider keys required,
  or bring your own), deploying to phone numbers, web widgets, or one-shot transcribe/synthesize/ complete calls. Speko is
  a Y Combinator (S26) company based in San Francisco, founded by Beknazar Abdikamalov. The platform advertises SOC 2 Type
  II, HIPAA, and GDPR posture and ships TypeScript and Python SDKs, a browser SDK, a LiveKit adapter, and a hosted MCP server.
deliveryModel:
  model: saas
  open_source: false
  commercial: true
  callable_host: true
  label: Hosted service · you call their endpoint
  confidence: high
  source:
  - openapi
  - pricing
  generated: '2026-08-28'
  method: derived
accessModel:
  pricing: paid
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Paid
  confidence: medium
  source:
  - plans
  - authentication
  - security
  generated: '2026-11-06'
  method: derived
image: https://speko.ai/favicon.ico
url: https://raw.githubusercontent.com/api-evangelist/speko/refs/heads/main/apis.yml
x-type: company
x-source: vc-portfolio
x-backed-by:
- y-combinator
specificationVersion: '0.23'
created: '2026-07-17'
modified: '2026-09-16'
tags:
- Voice
- Voice AI
- Speech-to-Text
- Text-to-Speech
- LLM
- Telephony
- API Gateway
- Conversational AI
- Developer Tools
- AI Infrastructure
tags_raw:
- Voice
- Voice AI
- Speech to Text
- Text to Speech
- LLM
- Telephony
- API Gateway
- Conversational AI
- Developer Tools
- AI Infrastructure
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
apis:
- aid: speko:speko-agents-api
  name: Speko Agents API
  description: The Agents API from Speko — 2 operation(s) for agents.
  humanURL: https://docs.speko.dev/api-reference/introduction
  baseURL: https://api.speko.dev
  tags:
  - Agents
  properties:
  - type: OpenAPI
    url: openapi/speko-agents-api-openapi.yml
  - type: Authentication
    url: authentication/speko-authentication.yml
  - type: ErrorCatalog
    url: errors/speko-problem-types.yml
  - type: Conventions
    url: conventions/speko-conventions.yml
  - type: Idempotency
    url: conventions/speko-conventions.yml
  - type: DataModel
    url: data-model/speko-data-model.yml
  - type: Webhooks
    url: asyncapi/speko-webhooks.yml
- aid: speko:speko-providers-api
  name: Speko Providers API
  description: The Providers API from Speko — 1 operation(s) for providers.
  humanURL: https://docs.speko.dev/api-reference/introduction
  baseURL: https://api.speko.dev
  tags:
  - Providers
  properties:
  - type: OpenAPI
    url: openapi/speko-providers-api-openapi.yml
  - type: Authentication
    url: authentication/speko-authentication.yml
  - type: ErrorCatalog
    url: errors/speko-problem-types.yml
  - type: Conventions
    url: conventions/speko-conventions.yml
  - type: Idempotency
    url: conventions/speko-conventions.yml
  - type: DataModel
    url: data-model/speko-data-model.yml
  - type: Webhooks
    url: asyncapi/speko-webhooks.yml
- aid: speko:speko-telephony-api
  name: Speko Telephony API
  description: The Telephony API from Speko — 22 operation(s) for telephony.
  humanURL: https://docs.speko.dev/api-reference/introduction
  baseURL: https://api.speko.dev
  tags:
  - Telephony
  properties:
  - type: OpenAPI
    url: openapi/speko-telephony-api-openapi.yml
  - type: Authentication
    url: authentication/speko-authentication.yml
  - type: ErrorCatalog
    url: errors/speko-problem-types.yml
  - type: Conventions
    url: conventions/speko-conventions.yml
  - type: Idempotency
    url: conventions/speko-conventions.yml
  - type: DataModel
    url: data-model/speko-data-model.yml
  - type: Webhooks
    url: asyncapi/speko-webhooks.yml
- aid: speko:speko-voice-api
  name: Speko Voice API
  description: The Voice API from Speko — 8 operation(s) for voice.
  humanURL: https://docs.speko.dev/api-reference/introduction
  baseURL: https://api.speko.dev
  tags:
  - Voice
  properties:
  - type: OpenAPI
    url: openapi/speko-voice-api-openapi.yml
  - type: Authentication
    url: authentication/speko-authentication.yml
  - type: ErrorCatalog
    url: errors/speko-problem-types.yml
  - type: Conventions
    url: conventions/speko-conventions.yml
  - type: Idempotency
    url: conventions/speko-conventions.yml
  - type: DataModel
    url: data-model/speko-data-model.yml
  - type: Webhooks
    url: asyncapi/speko-webhooks.yml
common:
- type: Plans
  url: plans/speko-plans-pricing.yml
- type: Website
  url: https://speko.dev
- type: Overlay
  url: overlays/speko-openapi-overlay.yaml
- type: DeveloperPortal
  url: https://docs.speko.dev
- type: Documentation
  url: https://docs.speko.dev
- type: APIReference
  url: https://docs.speko.dev/api-reference/introduction
- type: GettingStarted
  url: https://docs.speko.dev/quickstart
- type: Pricing
  url: https://speko.ai/pricing
- type: SignUp
  url: https://platform.speko.dev/sign-in
- type: TermsOfService
  url: https://speko.ai/terms-of-service
- type: PrivacyPolicy
  url: https://speko.ai/privacy-policy
- type: Blog
  url: https://speko.ai/blog
- type: GitHubOrganization
  url: https://github.com/SpekoAI
- type: StatusPage
  url: https://status.speko.ai
- type: Support
  url: mailto:founders@speko.ai
- type: MCPServer
  url: mcp/speko-mcp.yml
- type: Packages
  url: packages/speko-packages.yml
- type: SDKs
  url: packages/speko-packages.yml
- type: AgentSkill
  url: skills/_index.yml
- type: Lifecycle
  url: lifecycle/speko-lifecycle.yml
- type: Conformance
  url: conformance/speko-conformance.yml
- type: Compliance
  url: https://speko.ai/
- type: Authentication
  url: authentication/speko-authentication.yml
- type: AgenticAccess
  url: agentic-access/speko-agentic-access.yml
- type: DomainSecurity
  url: security/speko-domain-security.yml
x-enrichment:
  date: '2026-07-21'
  status: enriched
  artifacts_added: 17
  pass: local-v1

Speko API — frequently asked questions

Does Speko have an API?

Yes. APIs.io lists 4 APIs from Speko, including Speko Agents API, Speko Providers API and Speko Telephony API, and 1 more.

Is there an OpenAPI specification for the Speko API?

Yes. APIs.io indexes 4 OpenAPI specifications for Speko, each linked for download from this page.

How do I authenticate with the Speko API?

Speko documents its authentication (http · 1 scheme). The details are profiled on APIs.io as Speko Authentication.

How much does the Speko API cost?

Speko publishes its prices; its Router plan is +5% on the provider's rate as of 2026-10-07. APIs.io lists 4 pricing plans for Speko, with each plan's price, limits and inclusions under Pricing on this page.

Does Speko have an MCP server?

Yes. APIs.io lists 1 MCP server for Speko: Remote MCP server at mcp.speko.ai over HTTP.

Is the Speko API ready for AI agents?

Speko has a Kin Score of 59.7 out of 100 (strong) and an Agent Readiness score of 61.0 (agent-native), scored by API Evangelist on 2026-11-06.

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get_provider_toolsEvery MCP tool they ship, with the operation each wraps.
get_provider_evidenceHow each part of their score was established. Free — the basis for a claim should not sit behind it.
get_provider_ratingPRO — composite, band, trend and facet scores.
apis_io_searchSTART HERE — APIs, providers and tags for one query, each with its total.
resolveTurn a domain, URL or GitHub org into the provider it belongs to.
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Every operation they expose

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