Wit.AI

Wit.ai is a natural language processing (NLP) platform from Meta that lets developers build applications and devices you can talk or text to. It turns spoken or written user input into structured, machine-readable data — extracting intents, entities, and traits — and provides speech recognition (speech-to-text), dictation, and speech synthesis (text-to-speech). Developers train an app with example utterances, then call the Wit HTTP API with a Bearer server access token to parse messages, transcribe audio, and manage an app's entities, intents, traits, and utterances. Wit.ai is free to use and ships official client SDKs for Node.js, Python, Ruby, Go, iOS, Unity, and Unreal. It was founded in 2013, backed by a16z, and acquired by Facebook (now Meta) in 2015.

Wit.AI publishes 1 API on the APIs.io network. Tagged areas include Company, Natural Language Processing, NLP, Speech Recognition, and Speech-to-Text.

Wit.AI’s developer surface includes documentation, API reference, getting-started guide, signup flow, authentication, and 12 more developer resources.

🌐 Visit website 📡 Source on GitHub

23.6/100 emerging ▬ flat Agent 3/100 human only saas Full breakdown ↓
scored 2026-09-08 · rubric v0.20.0

1 APIs

Company Natural Language Processing NLP Speech Recognition Speech-to-Text Text-to-Speech Intents Entities Voice Conversational AI Machine-Learning Meta

Kin Score

Kin Score How this is scored →
scored 2026-09-08 · rubric v0.20.0

Composite quality — 23.6/100 · emerging

Contract Quality 0.0 / 25

Developer Ergonomics 11.4 / 20

Access Clarity 4.2 / 20

Operational Transparency 0.3 / 13

Contract Governance 0.0 / 12

Discoverability 7.6 / 10

Agent readiness — 3/100 · human only

Machine-Readable Contract 0 / 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 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

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.

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 github.com/api-evangelist/witai: open an issue to ask a question, or submit a pull request to add artifacts. Submit an artifact on GitHub — free → Manage your own listing — the Influence plan, $499/mo →

APIs 1

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

Wit.ai HTTP API

The Wit.ai HTTP API extracts structured meaning (intents, entities, traits) from text and audio, transcribes speech (speech / dictation), synthesizes speech (text-to-speech), an...

Security Posture 2

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

Witai Authentication

http · 1 scheme

SECURITY

Witai Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

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 2

MCP servers, agent skills, and machine-readable catalogs

X-MCPServerCandidate

X-MCPServerCandidate

LLMsTxt

LLMsTxt

Design & Contract 2

Pagination, idempotency, versioning, errors, and events

Conventions

Conventions

Lifecycle

Lifecycle

Build 3

SDKs, sample code, and the tooling you integrate with

GitHubOrganization

GitHubOrganization

Packages

Packages

SDKs

SDKs

Access & Security 2

Authentication, authorization, and security posture

Authentication

Authentication

DomainSecurity

DomainSecurity

Commercial 2

Pricing, plans, and the legal terms of use

TermsOfService

TermsOfService

PrivacyPolicy

PrivacyPolicy

Company 1

The organization behind the API

Website

Website

Source (apis.yml)

aid: witai
name: Wit.AI
description: Wit.ai is a natural language processing (NLP) platform from Meta that lets developers build applications and
  devices you can talk or text to. It turns spoken or written user input into structured, machine-readable data — extracting
  intents, entities, and traits — and provides speech recognition (speech-to-text), dictation, and speech synthesis (text-to-speech).
  Developers train an app with example utterances, then call the Wit HTTP API with a Bearer server access token to parse messages,
  transcribe audio, and manage an app's entities, intents, traits, and utterances. Wit.ai is free to use and ships official
  client SDKs for Node.js, Python, Ruby, Go, iOS, Unity, and Unreal. It was founded in 2013, backed by a16z, and acquired
  by Facebook (now Meta) in 2015.
deliveryModel:
  model: saas
  open_source: false
  commercial: true
  callable_host: false
  label: Hosted service · you call their endpoint
  confidence: medium
  source:
  - pricing
  generated: '2026-08-28'
  method: derived
accessModel:
  pricing: unknown
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Unknown
  confidence: low
  source:
  - authentication
  - security
  generated: '2026-09-03'
  method: derived
image: https://avatars.githubusercontent.com/u/4723433?v=4
url: https://raw.githubusercontent.com/api-evangelist/witai/refs/heads/main/apis.yml
x-type: company
x-source: vc-portfolio
x-backed-by:
- a16z
x-tier: stub
x-tier-reason: portfolio-lead
specificationVersion: '0.23'
created: '2026-07-17'
modified: '2026-07-21'
tags:
- Company
- Natural Language Processing
- NLP
- Speech Recognition
- Speech-to-Text
- Text-to-Speech
- Intents
- Entities
- Voice
- Conversational AI
- Machine-Learning
- Meta
tags_raw:
- Company
- Natural Language Processing
- NLP
- Speech Recognition
- Speech to Text
- Text to Speech
- Intents
- Entities
- Voice
- Conversational AI
- Machine Learning
- Meta
apis:
- name: Wit.ai HTTP API
  description: 'The Wit.ai HTTP API extracts structured meaning (intents, entities, traits) from text and audio, transcribes
    speech (speech / dictation), synthesizes speech (text-to-speech), and manages an app''s NLP model (entities, intents,
    traits, utterances, apps, export/import). Authenticated with a Bearer server access token and versioned by date (current:
    20240304).'
  humanURL: https://wit.ai/docs/http/latest
  baseURL: https://api.wit.ai
  tags:
  - Natural Language Processing
  - Speech
  - NLP
  properties:
  - type: APIReference
    url: https://wit.ai/docs/http/latest
  - type: Authentication
    url: authentication/witai-authentication.yml
  - type: Conventions
    url: conventions/witai-conventions.yml
  - type: Lifecycle
    url: lifecycle/witai-lifecycle.yml
  - type: X-MCPServerCandidate
    url: mcp/witai-mcp.yml
    note: 'Renamed from MCPServer 2026-09-03 (roadmap#247): the manifest self-describes as status: candidate — a tool list
      derived from the published API contracts, not an existing server. The scorer already read the manifest and reported
      mcp_server correctly; the MCPServer type was crediting the artifact-type surfaces with a server that does not exist.'
common:
- type: Website
  url: https://www.wit.ai/
- type: DeveloperPortal
  url: https://wit.ai
- type: Documentation
  url: https://wit.ai/docs
- type: APIReference
  url: https://wit.ai/docs/http/latest
- type: GettingStarted
  url: https://wit.ai/docs/quickstart
- type: GitHubOrganization
  url: https://github.com/wit-ai
- type: SignUp
  url: https://wit.ai/apps
- type: TermsOfService
  url: https://opensource.facebook.com/legal/terms
- type: PrivacyPolicy
  url: https://opensource.facebook.com/legal/privacy
- type: Packages
  url: packages/witai-packages.yml
- type: SDKs
  url: packages/witai-packages.yml
- type: Authentication
  url: authentication/witai-authentication.yml
- type: Conventions
  url: conventions/witai-conventions.yml
- type: Lifecycle
  url: lifecycle/witai-lifecycle.yml
- type: DomainSecurity
  url: security/witai-domain-security.yml
- type: X-MCPServerCandidate
  url: mcp/witai-mcp.yml
  note: 'Renamed from MCPServer 2026-09-03 (roadmap#247): the manifest self-describes as status: candidate — a tool list derived
    from the published API contracts, not an existing server. The scorer already read the manifest and reported mcp_server
    correctly; the MCPServer type was crediting the artifact-type surfaces with a server that does not exist.'
- type: LLMsTxt
  url: llms/witai-llms.txt
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
x-enrichment:
  date: '2026-07-21'
  status: enriched
  artifacts_added: 7
  pass: local-v1

Work with this as data

Every provider here is available over the APIs.io API and to AI agents over MCP.

MCP server

One button, every client — Claude, Cursor, VS Code and the rest.

https://apis.io/mcp

Tools for providers

9 MCP tools reach this

find_providersBrowse and filter every provider in the catalog.
get_provider_artifactsEvery artifact this provider publishes, grouped by type.
get_provider_operationsEvery operation across all of their OpenAPIs — one call instead of parsing every spec.
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.
find_cohortsEvery scored population of providers in the catalog.

All 92 tools →

Call it yourself

curl for this page

This provider

curl "https://apis.io/api/v1/providers/witai"

All providers

curl "https://apis.io/api/v1/providers?limit=25"

Every operation they expose

curl "https://apis.io/api/v1/providers/witai/operations?limit=25"

How their score was established

curl "https://apis.io/api/v1/providers/witai/evidence"

Discovery needs no key. Ratings and market analysis are Pro.

Get an API key

Free tier, no form to fill in. Signing in shares your email address with us — we store it to create your key and to recognise you if you sign in with another provider. See our Privacy Policy and Terms.

GitHub Google LinkedIn

A second provider on the same verified email joins the account you already have.