Defined.ai (DefinedCrowd)
Defined.ai (formerly DefinedCrowd) is an AI training data platform and marketplace founded in 2015 by Daniela Braga, headquartered in Seattle with offices in Lisbon, Porto, and Tokyo. It provides ready-to-use datasets across speech, text, image, video, and multimodal, plus custom data collection, annotation, machine translation, conversational AI, LLM fine-tuning, and data and model evaluation services sourced from a global community of 1.6M+ vetted contributors across 150+ markets and 500+ languages, dialects, and locales. The Defined.ai Public API (v2.0) lets enterprise customers manage projects programmatically — create Mean Opinion Score and Pronunciation Validation projects, upload input units, configure supported languages, track project status and errors, manage jobs, retrieve deliverables, and subscribe to notifications. Data provenance and compliance are backed by ISO 27001, ISO 27701, ISO 42001, GDPR, and HIPAA.
Limited machine-readable signal and partial portal coverage — documentation a human can read, but little a machine or agent can consume without scraping.
API Evangelist profiles Defined.ai (DefinedCrowd) the way a machine reads it — 20 machine-readable artifacts across 1 API, pulled from the provider's own public surface and indexed so a developer, an analyst, or an AI agent can evaluate it against every other provider on the network.
Every provider in the network is reduced to the same set of machine-readable artifacts — OpenAPI contracts, event specifications, GraphQL schemas, runnable collections, pricing and rate-limit signals, security posture, OAuth scopes, and the agent surfaces (MCP servers and skills) that let software drive the API on its own. We profile them because the interface is the part of a company you can actually inspect: it is a truer signal of what a provider does than any marketing page. From those artifacts we compute the Kin Score — Defined.ai (DefinedCrowd) scores 37.8/100 (thin), with a separate agent-readiness read of 25/100 (agent aware). The full breakdown is below, followed by every artifact we hold — each card links through to its machine-readable definition on apis.io.
Kin Score
This is the API Evangelist rating — a single, repeatable read computed from the artifacts on this page. Green fill is points earned; the red track is points possible, so every bar shows earned-versus-possible at a glance. Every facet and dimension name is a link: it opens that measurement's page on APIs.io, where the rating runs across the whole catalog — the exact checks that feed it, how every profiled provider distributes on it, and who is at the top of it.
Kin Score
How this is scored →scored 2026-09-08 · rubric v0.20.0
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How we profile Defined.ai (DefinedCrowd)
Each block below is one kind of artifact we hold for Defined.ai (DefinedCrowd). For each we say what it is and why it earns a place in the profile, then list every one we've indexed — capped at two rows, scroll within the panel for the rest.
APIs 8
Each API is captured as its own OpenAPI definition — every operation, parameter, and response. This is the single most useful machine-readable description of what an API does, and it's what lets us score, lint, mock, and generate against it without asking the provider for anything.
Individual APIs this provider publishes, each with its own machine-readable definition.
Defined.ai (DefinedCrowd) Deliverables API
The result file is created after the project is completed and is referred to as deliverables. The file contains contributor metadata for completed input units.
Defined.ai (DefinedCrowd) Input Units API
Each input unit is a single component of work done by the contributors. There are several types of units – audio, text, and image. In a given project, all units should have the ...
Defined.ai (DefinedCrowd) Jobs API
Jobs are how your data (input units) connects the project with our contributors. Each job has data, instructions, and customizable parameters, which then convert inputs to outpu...
Defined.ai (DefinedCrowd) Mean Opinion Score API
Aggregate ratings on the "intelligibility" and "naturalness" of utterances.
Defined.ai (DefinedCrowd) Project Management API
Informally, projects can be viewed as configurable packages that process sets of Input Units. The project’s template determines how the Input Units are processed. Projects can b...
Defined.ai (DefinedCrowd) Pronunciation Validation API
Confirm audio meets pronunciation standards.
Defined.ai (DefinedCrowd) Subscriptions API
Subscribe to automatic notifications for specific email addresses. Email notifications are sent for events that happen during the life cycle of the project. By using thi...
Defined.ai (DefinedCrowd) Supported Languages API
Several of the Workflow Templates offer the ability to set a language / country code. These configurations instruct Defined.ai to use our human intelligence Contributors that sp...
Scroll within the panel for all 8 ·
Open Collections 9
Open, tool-agnostic collections carry the same runnable value as Postman without locking you to one client — the portable, forkable form of the same exercise.
Open, tool-agnostic API collections (OpenAPI-derived and Bruno).
API Collection
OPEN COLLECTIONDefined.ai Deliverables API
OPEN COLLECTIONDefined.ai Deliverables Input Units API
OPEN COLLECTIONDefined.ai Deliverables Jobs API
OPEN COLLECTIONDefined.ai Deliverables Mean Opinion Score API
OPEN COLLECTIONDefined.ai Deliverables Project Management API
OPEN COLLECTIONDefined.ai Deliverables Pronunciation Validation API
OPEN COLLECTIONDefined.ai Deliverables Subscriptions API
OPEN COLLECTIONDefined.ai Deliverables Supported Languages API
OPEN COLLECTIONScroll within the panel for all 9 ·
Security Posture 2
Authentication, domain security, vulnerability disclosure, and trust-center signals — the evidence that a provider takes security seriously enough to document it. We profile it because you can't govern what you can't see.
Authentication, domain security, vulnerability disclosure, and trust-center signals.
Agentic Access 1
An x-agentic-access contract marks which operations are safe for an agent to run on its own and which need a human in the loop. It is the difference between an API an agent can use and one it can use safely.
Recommended x-agentic-access execution contracts for AI agents.
Resources
Every other property we hold for Defined.ai (DefinedCrowd) — documentation, portals, status pages, policies, and corporate surface — grouped by the job it does, following the integrator's arc from getting started to running in production.
Get Started 2
Portal, sign-up, and the first successful call
Documentation 1
Reference material describing how the API behaves
Agent Surfaces 4
MCP servers, agent skills, and machine-readable catalogs
Design & Contract 5
Pagination, idempotency, versioning, errors, and events
Access & Security 3
Authentication, authorization, and security posture
Operate 1
Status, limits, changes, and where to get help
Commercial 2
Pricing, plans, and the legal terms of use
Company 2
The organization behind the API
Other 1
Properties that don't map to a standard resource type
← All providers · Data indexed from github.com/api-evangelist/definedcrowd · machine-readable index on apis.io
This is an independent, third-party profile of Defined.ai (DefinedCrowd), published by API Evangelist. We do not operate, host, resell, or support these APIs, and we are not affiliated with or endorsed by the company unless stated above. Everything here is built from publicly available information — the company's own site, developer portal, documentation, public repositories, and the specifications it publishes for public use. Nothing is obtained by breaching a system, defeating an access control, or using credentials.
The Kin Score and Agent Readiness rating are independently calculated assessments of a company's public API artifacts, scored against a published rubric. They are not certifications, endorsements, security assessments, or audits.
Corrections, re-scores, and removal are free — no partnership or purchase required, and you do not need to justify the request. A removed company is recorded as unrated, never scored zero for having asked. Acknowledgement within one business day; removal within two.
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