Willo

Willo is an asynchronous ("one-way") video interviewing and screening platform that lets teams invite candidates to record answers to pre-defined questions on any browser or device with no downloads, apps, or login required. The Willo Integration API V2 exposes the platform's UI actions as a public REST API so you can embed video interviewing into a job board, ATS, CRM, or staffing platform - managing Departments (Companies), Interviews (jobs and their questions), Participants (candidates) and their video Responses, Message Templates, Users, Webhooks, and Interview Templates. Authentication is by an integration key (API key) from the Willo Integrations page, sent in the Authorization header over HTTPS.

Willo publishes 9 API contracts indexed on the APIs.io network, including Child Organisations API, Departments API, Interview Templates API, and 6 more. Tagged areas include Video Interviewing, Recruiting, Human Resources, Applicant Tracking, and Screening.

The Willo catalog on APIs.io includes 1 Spectral governance ruleset.

Willo’s developer surface includes authentication, documentation, signup flow, support, changelog, engineering blog, and 13 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

35.9/100 thin ▬ flat Agent 19/100 agent aware Front door AI 3/6 light Heartbeat 69/100 alive saas Full breakdown ↓
scored 2026-11-13 · rubric v0.28.0 · Show this score on your site →

AccessPaid

1 published contract

Video Interviewing Recruiting Human Resources Applicant Tracking ScreeningAsync Video

What this lets a business do 2

Business capabilities this provider's published APIs can perform, derived from its own contracts. Browse all capabilities →

Human Capital Management

BC-300

Interview TemplatesInterviewsParticipants

POST /interviews/ POST /interview-templates/{key}/interviews/ GET /participants/ POST /participants/

Developer Platform & API Ecosystem Management

BC-4270

Webhooks

POST /webhooks/

Kin Score

Kin Score How this is scored →
scored 2026-11-13 · rubric v0.28.0

Composite quality — 35.9/100 · thin

Contract Quality 10.1 / 19

Developer Ergonomics 6.3 / 15

Access Clarity 2.6 / 15

Operational Transparency 3.2 / 10

Contract Governance 1.2 / 9

Discoverability 5.0 / 8

Regulatory Posture 1.6 / 15

Create-or-Update Ergonomics 0.0 / 10

Agent readiness — 19/100 · agent aware

Machine-Readable Contract 18 / 18

Agentic Access Contract 10 / 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 7 / 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 0 / 5

Distinct Operations 3 / 3

MCP Tool Quality 6 / 6

Regulatory Posture applies to this provider. Its tags matched the Employment & Payroll regime (on an ambiguous tag, where no other regime matched), 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):

MCP Server +12 pts — deployment.mode + probe verdict on the mcp/ manifest, not the pointer; an unprobed slug falls back to authorship Ask about this →
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) Ask about this →
Stable Error Semantics +8 pts — OpenAPI $refs a shared error schema across 4xx/5xx responses (verified), else common[].type includes ErrorCatalog / ErrorCodes / DeclineCodes Ask about this →
A2A Agent Card +8 pts — a2a/-a2a.yml manifest, graded on conformance.grade against A2A 1.0.0 Ask about this →
Request/Response Examples +7 pts — share of operations carrying request/response examples; else an Examples / Code Samples link Ask about this →
Registration Without a Human +6 pts — a `registration_endpoint` in the served RFC 8414 / OIDC discovery document Ask about this →

10 more unmet checks in the Agent Readiness table above.

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

Access Clarity scores 17.0 — up to +16.6 composite points Ask about this →
Developer Ergonomics scores 41.7 — up to +11.7 composite points Ask about this →
Contract Quality scores 54.0 — up to +11.5 composite points Ask about this →

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.

Not sure how this applies to your stack? Ask about any one item. Kin Lane reads every question, looks at your profile and your situation, and replies with what a fix would take — scoped to that one area, priced up front, yours whether you ship it or not. Ask a question →

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/willo/apis.yml: open an issue on github.com/api-evangelist/willo 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 1

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.

OpenAPI

measured — observed by APIs.io (published)

APIs 9

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

Willo Child Organisations API

Organisations created under a parent organisation, inheriting its properties but managed independently.

Willo Departments API

Sub-divisions of the account (shown as "Companies" in the UI), each with its own branding.

Willo Interview Templates API

Pre-built interview templates and their categories, used to create interviews quickly.

Willo Interviews API

A named set of pre-defined questions a participant answers; typically a "job" in an ATS.

Willo Message Templates API

Invite, reminder, and success email/SMS templates sent to participants.

Willo Participants API

Candidates invited to an interview - no download, login, or authentication required.

Willo Reference API

Read-only reference data - languages and IDV countries of employment.

Willo Users API

Authenticated team members (Owner, Admin, Standard) with access to interviews and participants.

Willo Webhooks API

Notifications posted to a third-party endpoint on new response, stage change, new comment, or new score.

Scroll for all 9

Open Collections 10

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

Willo Integration API V2 Child Organisations API

OPEN COLLECTION

Willo Integration API V2 Child Organisations Departments API

OPEN COLLECTION

Willo Integration API V2 Child Organisations Interview Templates API

OPEN COLLECTION

Willo Integration API V2 Child Organisations Interviews API

OPEN COLLECTION

Willo Integration API V2 Child Organisations Message Templates API

OPEN COLLECTION

Willo Integration API V2 Child Organisations Participants API

OPEN COLLECTION

Willo Integration API V2 Child Organisations Reference API

OPEN COLLECTION

Willo Integration API V2 Child Organisations Users API

OPEN COLLECTION

Willo Integration API V2 Child Organisations Webhooks API

OPEN COLLECTION

Willo Integration API V2

OPEN COLLECTION

Scroll for all 10

Willo API pricing

Not yet checked against Willo's own pricing page. Compiled by API Evangelist on 2026-07-10 from www.willo.video/pricing; confirm before you rely on a figure.

Plan	Price
Growth paid	$279 per subscription (Monthly) / month · $209 per subscription (Annual, per month) / month
Scale paid	$409 per subscription (Monthly) / month · $307 per subscription (Annual, per month) / month
Enterprise enterprise	—
Non-profit Program discount	—

Plan details, limits and sources →

Rate limits

Integration API Requests: not published (throttled) requests
Polling Behaviour: discouraged requests
Concurrent Requests: discouraged concurrency

Compiled by API Evangelist, not yet checked against Willo's documentation. All 4 limits →

Pricing Plans 1

Published pricing tiers and plan structures.

Willo Plans Pricing

4 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Willo Rate Limits

4 limits

RATE LIMITS

Service Levels 1

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

Willo

SLA

Compliance 1

Attestations the provider states (SOC 2, ISO 27001 and others), quoted from its own trust page. APIs.io verifies none of them.

Willo

1 quoted statement, read from Willo's own page on 2026-11-10.

COMPLIANCE

FinOps 1

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

Willo Finops

FINOPS

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs. Counts are the severity each rule declares, not results of running them.

Willo API Rules

61 rules · 57 error-severity 3 warn-severity 1 info-severity

SPECTRAL

Security Posture 3

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

Willo Authentication

apiKey · 1 scheme

SECURITY

Willo Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Willo Trust Center

SOC 2, ISO 27001, PCI DSS, HIPAA, GDPR

SECURITY

Agentic Access (API Evangelist recommendations) 1

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

Willo Agentic Access

44 operations · 25 acting

AGENTIC

Resources

Get Started 2

Portal, sign-up, and the first successful call

DeveloperPortal

DeveloperPortal

SignUp

SignUp

Documentation 1

Reference material describing how the API behaves

Documentation

Documentation

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess

AgenticAccess

Access & Security 3

Authentication, authorization, and security posture

TrustCenter

TrustCenter

DomainSecurity

DomainSecurity

Authentication

Authentication

Operate 4

Status, limits, changes, and where to get help

Support

StatusPage

ChangeLog

RateLimits

Commercial 2

Pricing, plans, and the legal terms of use

Plans

Plans

FinOps

FinOps

Company 4

The organization behind the API

BlogRSS

BlogRSS

LinkedIn

Website

Website

Blog

Blog

Other 2

Properties that don't map to a standard resource type

CapabilityMap

CapabilityMap

Attestations

Attestations

Source (apis.yml)

aid: willo
url: https://raw.githubusercontent.com/api-evangelist/willo/refs/heads/main/apis.yml
name: Willo
kind: company
description: Willo is an asynchronous ("one-way") video interviewing and screening platform that lets teams invite candidates
  to record answers to pre-defined questions on any browser or device with no downloads, apps, or login required. The Willo
  Integration API V2 exposes the platform's UI actions as a public REST API so you can embed video interviewing into a job
  board, ATS, CRM, or staffing platform - managing Departments (Companies), Interviews (jobs and their questions), Participants
  (candidates) and their video Responses, Message Templates, Users, Webhooks, and Interview Templates. Authentication is by
  an integration key (API key) from the Willo Integrations page, sent in the Authorization header over HTTPS.
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: '2026-11-13'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/willo.png
tags:
- Video Interviewing
- Recruiting
- Human Resources
- Applicant Tracking
- Screening
- Async Video
tags_raw:
- Video Interviewing
- Recruitment
- HR Tech
- ATS
- Screening
- Async Video
created: '2026-07-10'
modified: '2026-10-06'
specificationVersion: '0.23'
apis:
- aid: willo:willo-child-organisations-api
  name: Willo Child Organisations API
  description: Organisations created under a parent organisation, inheriting its properties but managed independently.
  humanURL: https://documenter.getpostman.com/view/7798010/VUjSEiSn
  baseURL: https://api.willotalent.com/api/integrations/v2
  tags:
  - Child Organisations
  properties:
  - type: OpenAPI
    url: openapi/willo-child-organisations-api-openapi.yml
  - type: Documentation
    url: https://www.willo.video/api
  - type: APIReference
    url: https://documenter.getpostman.com/view/7798010/VUjSEiSn
  - type: PostmanCollection
    url: collections/willo.postman_collection.json
  - type: OpenCollection
    url: collections/willo.opencollection.json
- aid: willo:willo-departments-api
  name: Willo Departments API
  description: Sub-divisions of the account (shown as "Companies" in the UI), each with its own branding.
  humanURL: https://documenter.getpostman.com/view/7798010/VUjSEiSn
  baseURL: https://api.willotalent.com/api/integrations/v2
  tags:
  - Departments
  properties:
  - type: OpenAPI
    url: openapi/willo-departments-api-openapi.yml
  - type: Documentation
    url: https://www.willo.video/api
  - type: APIReference
    url: https://documenter.getpostman.com/view/7798010/VUjSEiSn
  - type: PostmanCollection
    url: collections/willo.postman_collection.json
  - type: OpenCollection
    url: collections/willo.opencollection.json
- aid: willo:willo-interview-templates-api
  name: Willo Interview Templates API
  description: Pre-built interview templates and their categories, used to create interviews quickly.
  humanURL: https://documenter.getpostman.com/view/7798010/VUjSEiSn
  baseURL: https://api.willotalent.com/api/integrations/v2
  tags:
  - Interview Templates
  properties:
  - type: OpenAPI
    url: openapi/willo-interview-templates-api-openapi.yml
  - type: Documentation
    url: https://www.willo.video/api
  - type: APIReference
    url: https://documenter.getpostman.com/view/7798010/VUjSEiSn
  - type: PostmanCollection
    url: collections/willo.postman_collection.json
  - type: OpenCollection
    url: collections/willo.opencollection.json
- aid: willo:willo-interviews-api
  name: Willo Interviews API
  description: A named set of pre-defined questions a participant answers; typically a "job" in an ATS.
  humanURL: https://documenter.getpostman.com/view/7798010/VUjSEiSn
  baseURL: https://api.willotalent.com/api/integrations/v2
  tags:
  - Interviews
  properties:
  - type: OpenAPI
    url: openapi/willo-interviews-api-openapi.yml
  - type: Documentation
    url: https://www.willo.video/api
  - type: APIReference
    url: https://documenter.getpostman.com/view/7798010/VUjSEiSn
  - type: PostmanCollection
    url: collections/willo.postman_collection.json
  - type: OpenCollection
    url: collections/willo.opencollection.json
- aid: willo:willo-message-templates-api
  name: Willo Message Templates API
  description: Invite, reminder, and success email/SMS templates sent to participants.
  humanURL: https://documenter.getpostman.com/view/7798010/VUjSEiSn
  baseURL: https://api.willotalent.com/api/integrations/v2
  tags:
  - Message Templates
  properties:
  - type: OpenAPI
    url: openapi/willo-message-templates-api-openapi.yml
  - type: Documentation
    url: https://www.willo.video/api
  - type: APIReference
    url: https://documenter.getpostman.com/view/7798010/VUjSEiSn
  - type: PostmanCollection
    url: collections/willo.postman_collection.json
  - type: OpenCollection
    url: collections/willo.opencollection.json
- aid: willo:willo-participants-api
  name: Willo Participants API
  description: Candidates invited to an interview - no download, login, or authentication required.
  humanURL: https://documenter.getpostman.com/view/7798010/VUjSEiSn
  baseURL: https://api.willotalent.com/api/integrations/v2
  tags:
  - Participants
  properties:
  - type: OpenAPI
    url: openapi/willo-participants-api-openapi.yml
  - type: Documentation
    url: https://www.willo.video/api
  - type: APIReference
    url: https://documenter.getpostman.com/view/7798010/VUjSEiSn
  - type: PostmanCollection
    url: collections/willo.postman_collection.json
  - type: OpenCollection
    url: collections/willo.opencollection.json
- aid: willo:willo-reference-api
  name: Willo Reference API
  description: Read-only reference data - languages and IDV countries of employment.
  humanURL: https://documenter.getpostman.com/view/7798010/VUjSEiSn
  baseURL: https://api.willotalent.com/api/integrations/v2
  tags:
  - Reference
  properties:
  - type: OpenAPI
    url: openapi/willo-reference-api-openapi.yml
  - type: Documentation
    url: https://www.willo.video/api
  - type: APIReference
    url: https://documenter.getpostman.com/view/7798010/VUjSEiSn
  - type: PostmanCollection
    url: collections/willo.postman_collection.json
  - type: OpenCollection
    url: collections/willo.opencollection.json
- aid: willo:willo-users-api
  name: Willo Users API
  description: Authenticated team members (Owner, Admin, Standard) with access to interviews and participants.
  humanURL: https://documenter.getpostman.com/view/7798010/VUjSEiSn
  baseURL: https://api.willotalent.com/api/integrations/v2
  tags:
  - User
  tags_raw:
  - Users
  properties:
  - type: OpenAPI
    url: openapi/willo-users-api-openapi.yml
  - type: Documentation
    url: https://www.willo.video/api
  - type: APIReference
    url: https://documenter.getpostman.com/view/7798010/VUjSEiSn
  - type: PostmanCollection
    url: collections/willo.postman_collection.json
  - type: OpenCollection
    url: collections/willo.opencollection.json
- aid: willo:willo-webhooks-api
  name: Willo Webhooks API
  description: Notifications posted to a third-party endpoint on new response, stage change, new comment, or new score.
  humanURL: https://documenter.getpostman.com/view/7798010/VUjSEiSn
  baseURL: https://api.willotalent.com/api/integrations/v2
  tags:
  - Webhook
  tags_raw:
  - Webhooks
  properties:
  - type: OpenAPI
    url: openapi/willo-webhooks-api-openapi.yml
  - type: Documentation
    url: https://www.willo.video/api
  - type: APIReference
    url: https://documenter.getpostman.com/view/7798010/VUjSEiSn
  - type: PostmanCollection
    url: collections/willo.postman_collection.json
  - type: OpenCollection
    url: collections/willo.opencollection.json
common:
- url: https://www.willo.video/blog/rss.xml
  type: BlogRSS
- type: CapabilityMap
  url: capabilities/willo-capability-edges.yml
  name: Willo Business Capability Map
- type: AgenticAccess
  url: agentic-access/willo-agentic-access.yml
- type: TrustCenter
  url: security/willo-trust-center.yml
- type: DomainSecurity
  url: security/willo-domain-security.yml
- type: Authentication
  url: authentication/willo-authentication.yml
- type: LinkedIn
  url: https://www.linkedin.com/company/willovideo
- type: Website
  url: https://www.willo.video/
- type: Documentation
  url: https://documenter.getpostman.com/view/7798010/VUjSEiSn
- type: DeveloperPortal
  url: https://developers.willo.video/
- type: SignUp
  url: https://app.willotalent.com/integrations
- type: Support
  url: https://support.willo.video/
- type: StatusPage
  url: https://status.willo.video/
- type: ChangeLog
  url: https://feedback.willo.video/changelog
- type: Plans
  url: plans/willo-plans-pricing.yml
- type: RateLimits
  url: rate-limits/willo-rate-limits.yml
- type: FinOps
  url: finops/willo-finops.yml
- type: Blog
  url: https://www.willo.video/blog
- type: Attestations
  url: compliance/willo-compliance.yml
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com

Willo API — frequently asked questions

Does Willo have an API?

Yes. APIs.io lists 9 APIs from Willo, including Willo Child Organisations API, Willo Departments API and Willo Interview Templates API, and 6 more.

Is there an OpenAPI specification for the Willo API?

Yes. APIs.io indexes 9 OpenAPI specifications for Willo, each linked for download from this page.

How do I authenticate with the Willo API?

Willo uses bearer-token authentication (apiKey · 1 scheme). The details are profiled on APIs.io as Willo Authentication.

How much does the Willo API cost?

APIs.io lists 4 pricing plans for Willo, with each plan's price, limits and inclusions under Pricing on this page.

Is the Willo API ready for AI agents?

Willo has a Kin Score of 35.9 out of 100 (thin) and an Agent Readiness score of 19.0 (agent-aware), scored by API Evangelist on 2026-11-13.

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