Layercode website screenshot

Layercode

Layercode provides voice-AI agent infrastructure - low-latency voice pipelines that turn any LLM or text-based agent into a conversational voice agent for web, mobile, and phone. A REST API manages agents, sessions, and outbound calls, while a realtime WebSocket transport streams audio to the browser and a signed webhook delivers transcripts to your backend, which streams text-to-speech responses back over Server-Sent Events.

Layercode publishes 5 APIs on the APIs.io network, including Realtime Voice API, Webhooks API, Agents API, and 2 more. Tagged areas include AI, Voice, Voice Agents, Realtime, and Low Latency.

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

Layercode’s developer surface includes authentication, documentation, and 8 more developer resources.

🌐 Visit website 📡 Source on GitHub
38.7/100 thin ▼ -7.4 Agent 36/100 agent ready Full breakdown ↓
scored 2026-07-28 · rubric v0.6
AccessSelf serve
5 APIs
AIVoiceVoice AgentsRealtimeLow Latency

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-07-28 · rubric v0.6
Composite quality — 38.7/100 · thin
Contract Quality 15.7 / 25
Developer Ergonomics 3.9 / 20
Commercial Clarity 5.8 / 20
Operational Transparency 4.8 / 13
Governance 5.0 / 12
Discoverability 7.4 / 10
Agent readiness — 36/100 · agent ready
Machine-Readable Contract 18 / 18
Agentic Access Contract 10 / 10
MCP Server 0 / 12
Machine-Readable Auth 10 / 10
Idempotency 0 / 9
Stable Error Semantics 0 / 8
Request/Response Examples 0 / 7
Rate-Limit Signaling 7 / 7
Typed Event Surface 6 / 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
Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. This rating is computed from github.com/api-evangelist/layercode: open an issue to ask a question, or submit a pull request to add artifacts. Want it done for you? Prioritized profiling — $2,500 →

APIs 5

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

Layercode Realtime Voice API

Bidirectional realtime WebSocket transport that streams base64 PCM microphone audio from the browser to Layercode and streams synthesized speech, transcripts, and structured dat...

Layercode Webhooks API

HMAC-signed webhook Layercode POSTs to your backend with session and transcript events (session.start, message, data, session.update, session.end); your backend streams response...

Layercode Agents API

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

Layercode Calls API

The Calls API from Layercode — 1 operation(s) for calls.

Layercode Sessions API

The Sessions API from Layercode — 3 operation(s) for sessions.

Open Collections 1

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

Layercode REST API

OPEN COLLECTION

Pricing Plans 1

Published pricing tiers and plan structures.

Layercode Plans Pricing

1 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Layercode Rate Limits

3 limits

RATE LIMITS

FinOps 1

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

Layercode Finops

FINOPS

Event Specifications 1

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

Layercode Realtime Voice WebSocket API

AsyncAPI 2.6 description of Layercode's **realtime voice transport**, a genuine bidirectional WebSocket documented at https://docs.layercode.com/api-reference/frontend-ws-api. U...

ASYNCAPI

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs.

Layercode API Rules

5 rules · 1 errors 4 warnings

SPECTRAL

Security Posture 2

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

Layercode Authentication

http · 1 scheme

SECURITY

Layercode Domain Security

TLSv1.3 · HSTS · DNSSEC · DMARC

SECURITY

Agentic Access 1

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

Layercode Agentic Access

8 operations · 4 acting

8 operations · 4 acting

AGENTIC

Resources

Documentation 1

Reference material describing how the API behaves

Documentation
Documentation

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess
AgenticAccess

Build 1

SDKs, sample code, and the tooling you integrate with

GitHubOrganization
GitHubOrganization

Access & Security 2

Authentication, authorization, and security posture

DomainSecurity
DomainSecurity
 Authentication
Authentication

Operate 1

Status, limits, changes, and where to get help

RateLimits
RateLimits

Commercial 2

Pricing, plans, and the legal terms of use

Plans
Plans
 FinOps
FinOps

Company 2

The organization behind the API

LinkedIn
LinkedIn
 Website
Website

Source (apis.yml)

apis.yml Raw ↑ 
aid: layercode
url: https://raw.githubusercontent.com/api-evangelist/layercode/refs/heads/main/apis.yml
name: Layercode
kind: company
description: Layercode provides voice-AI agent infrastructure - low-latency voice pipelines that turn any LLM or text-based
  agent into a conversational voice agent for web, mobile, and phone. A REST API manages agents, sessions, and outbound calls,
  while a realtime WebSocket transport streams audio to the browser and a signed webhook delivers transcripts to your backend,
  which streams text-to-speech responses back over Server-Sent Events.
accessModel:
  pricing: unknown
  onboarding: self-serve
  trial: false
  try_now: false
  public: false
  label: Self-serve signup
  confidence: high
  source:
  - plans
  - authentication
  generated: '2026-07-22'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/layercode.png
tags:
- AI
- Voice
- Voice Agents
- Realtime
- Low Latency
created: '2026-06-21'
modified: '2026-06-21'
specificationVersion: '0.19'
apis:
- aid: layercode:layercode-realtime-voice-api
  name: Layercode Realtime Voice API
  tags:
  - Realtime
  - WebSocket
  - Voice
  - Audio
  image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
  humanURL: https://docs.layercode.com/api-reference/frontend-ws-api
  baseURL: wss://api.layercode.com/v1/agents/web/websocket
  properties:
  - url: https://docs.layercode.com/api-reference/frontend-ws-api
    type: Documentation
  - url: https://docs.layercode.com/api-reference/frontend-ws-api
    type: APIReference
  - url: asyncapi/layercode-asyncapi.yml
    type: AsyncAPI
  description: Bidirectional realtime WebSocket transport that streams base64 PCM microphone audio from the browser to Layercode
    and streams synthesized speech, transcripts, and structured data back, authorized with a short-lived client_session_key.
- aid: layercode:layercode-webhooks-api
  name: Layercode Webhooks API
  tags:
  - Webhooks
  - SSE
  - Events
  image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
  humanURL: https://docs.layercode.com/api-reference/webhook-sse-api
  baseURL: https://docs.layercode.com/api-reference/webhook-sse-api
  properties:
  - url: https://docs.layercode.com/api-reference/webhook-sse-api
    type: Documentation
  - url: https://docs.layercode.com/api-reference/webhook-sse-api
    type: APIReference
  - url: asyncapi/layercode-asyncapi.yml
    type: AsyncAPI
  description: HMAC-signed webhook Layercode POSTs to your backend with session and transcript events (session.start, message,
    data, session.update, session.end); your backend streams response.tts / response.data / response.end events back as Server-Sent
    Events that drive the agent's speech.
- aid: layercode:layercode-agents-api
  name: Layercode Agents API
  description: The Agents API from Layercode — 2 operation(s) for agents.
  humanURL: https://docs.layercode.com/api-reference/rest-api
  baseURL: https://api.layercode.com/v1
  tags:
  - Agents
  properties:
  - type: OpenAPI
    url: openapi/layercode-agents-api-openapi.yml
  - type: Documentation
    url: https://docs.layercode.com/api-reference/rest-api
  - type: APIReference
    url: https://docs.layercode.com/api-reference/rest-api
  - type: PostmanCollection
    url: collections/layercode.postman_collection.json
  - type: OpenCollection
    url: collections/layercode.opencollection.json
- aid: layercode:layercode-calls-api
  name: Layercode Calls API
  description: The Calls API from Layercode — 1 operation(s) for calls.
  humanURL: https://docs.layercode.com/api-reference/rest-api
  baseURL: https://api.layercode.com/v1
  tags:
  - Calls
  properties:
  - type: OpenAPI
    url: openapi/layercode-calls-api-openapi.yml
  - type: Documentation
    url: https://docs.layercode.com/api-reference/rest-api
  - type: APIReference
    url: https://docs.layercode.com/api-reference/rest-api
  - type: PostmanCollection
    url: collections/layercode.postman_collection.json
  - type: OpenCollection
    url: collections/layercode.opencollection.json
- aid: layercode:layercode-sessions-api
  name: Layercode Sessions API
  description: The Sessions API from Layercode — 3 operation(s) for sessions.
  humanURL: https://docs.layercode.com/api-reference/rest-api
  baseURL: https://api.layercode.com/v1
  tags:
  - Sessions
  properties:
  - type: OpenAPI
    url: openapi/layercode-sessions-api-openapi.yml
  - type: Documentation
    url: https://docs.layercode.com/api-reference/rest-api
  - type: APIReference
    url: https://docs.layercode.com/api-reference/rest-api
  - type: PostmanCollection
    url: collections/layercode.postman_collection.json
  - type: OpenCollection
    url: collections/layercode.opencollection.json
common:
- type: AgenticAccess
  url: agentic-access/layercode-agentic-access.yml
- type: DomainSecurity
  url: security/layercode-domain-security.yml
- type: Authentication
  url: authentication/layercode-authentication.yml
- type: GitHubOrganization
  url: https://github.com/layercodedev
- type: LinkedIn
  url: https://www.linkedin.com/company/layercode
- type: Website
  url: https://layercode.com
- type: Documentation
  url: https://docs.layercode.com
- type: Plans
  url: plans/layercode-plans-pricing.yml
- type: RateLimits
  url: rate-limits/layercode-rate-limits.yml
- type: FinOps
  url: finops/layercode-finops.yml
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com