Tadeus API

Tadeus is an AI voice agent platform for workforce platforms: one agent holds real, adaptive voice conversations with every employee at scale, in their own language, and returns structured, timestamped records to the HCM, payroll, scheduling and compliance systems people already use. It works from the transcript rather than the audio and reports comprehension and engagement signals about responses rather than inferring emotion, which is the position its published EU AI Act documentation rests on. The public Integration API is a 47-operation REST surface for creating interview templates and campaigns, inviting participants individually or in bulk, creating anonymous sessions, and retrieving transcripts, structured results with per-response quality signals, and cross-session AI insights. Tadeus went generally available on 14 July 2026 and also ships a hosted, first-party MCP server so agents can commission interviews and query results as tool calls.

Tadeus API publishes 9 API contracts indexed on the APIs.io network, including Attempts API, Billing API, Campaigns API, and 6 more. Tagged areas include Voice AI, Research, Interviews, Workforce, and Human Resources.

The Tadeus API catalog on APIs.io includes 1 Spectral governance ruleset.

Tadeus API’s developer surface includes documentation, API reference, getting-started guide, support, engineering blog, pricing, signup flow, and 22 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

51.1/100 developing ▬ flat Agent 29/100 agent ready Front door AI 6/6 dominant Heartbeat 99/100 alive saas Full breakdown ↓
scored 2026-11-06 · rubric v0.27.0 · Show this score on your site →

AccessPaidFree trial

1 published contract 1 MCP Servers 3 Agent Skills

Voice AI Research Interviews Workforce Human Resources Conversational AI Employee Experience AI Agents MCP EU AI Act Compliance Employee Engagement

Kin Score

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

Composite quality — 51.1/100 · developing

Contract Quality 8.9 / 19

Developer Ergonomics 7.4 / 15

Access Clarity 13.2 / 15

Operational Transparency 0.0 / 10

Contract Governance 2.9 / 9

Discoverability 5.3 / 8

Regulatory Posture 4.4 / 15

Create-or-Update Ergonomics 0.0 / 10

Agent readiness — 29/100 · agent ready

Machine-Readable Contract 18 / 18

Agentic Access Contract 0 / 10

Documented Reversibility 0 / 6

MCP Server 12 / 12

Machine-Readable Auth 10 / 10

Idempotency 0 / 9

Stable Error Semantics 8 / 8

Request/Response Examples 0 / 7

Rate-Limit Signaling 7 / 7

Typed Event Surface 0 / 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 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):

Agentic Access Contract +10 pts — agentic_access artifact present (x-agentic-access), graded by author
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)
A2A Agent Card +8 pts — a2a/-a2a.yml manifest, graded on conformance.grade against A2A 1.0.0
Request/Response Examples +7 pts — share of operations carrying request/response examples; else an Examples / Code Samples link
Registration Without a Human +6 pts — a `registration_endpoint` in the served RFC 8414 / OIDC discovery document
Delegated User Identity +6 pts — a served discovery document listing authorization_code in grant_types_supported (served), else an oauth2 authorizationCode flow or openIdConnect declared in an OpenAPI (documented)

8 more unmet checks in the Agent Readiness table above.

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

Contract Quality scores 47.6 — up to +13.1 composite points
Operational Transparency scores 0.0 — up to +13.0 composite points
Developer Ergonomics scores 49.4 — up to +10.1 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/tadeus-api/apis.yml: open an issue on github.com/api-evangelist/tadeus-api 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 2

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)

OpenAPI

measured — observed by APIs.io (published)

APIs 9

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

Tadeus API Attempts API

The attempts API from Tadeus API — 2 operation(s) for attempts.

Tadeus API Billing API

The billing API from Tadeus API — 6 operation(s) for billing.

Tadeus API Campaigns API

The campaigns API from Tadeus API — 5 operation(s) for campaigns.

Tadeus API Insights API

The insights API from Tadeus API — 6 operation(s) for insights.

Tadeus API Organisation API

The organisation API from Tadeus API — 2 operation(s) for organisation.

Tadeus API Results API

The results API from Tadeus API — 4 operation(s) for results.

Tadeus API Sessions API

The sessions API from Tadeus API — 2 operation(s) for sessions.

Tadeus API Templates API

The templates API from Tadeus API — 2 operation(s) for templates.

Tadeus API Transcripts API

The transcripts API from Tadeus API — 2 operation(s) for transcripts.

Scroll for all 9

Open Collections 1

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

Integration API

OPEN COLLECTION

MCP Servers 1

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

Tadeus MCP

Tadeus publishes a first-party, hosted, remote MCP server that lets any MCP-compatible agent (Claude and others) commission real voice interview campaigns with people, monitor t...

MCP SERVER

Agent Skills 3

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

tadeus-api-run-anonymous-pulse

AGENT SKILL

tadeus-api-run-interview-campaign

AGENT SKILL

tadeus-api-synthesize-campaign-insights

AGENT SKILL

Tadeus API pricing

Prices published by Tadeus API, read 2026-10-28 from tadeus.net/#pricing.

Plan	Price
STARTER	£10/ month Includes: Includes ~90 minutes of processing and priority queuing. Unlimited agents, Priority analysis queue,
GROWTH	£50/ month Includes: ~600 minutes + advanced analytics and full API access. Everything in Starter, Full API Access, Dedic
ENTERPRISE	Ask us/ month Includes: Everything in Growth; SSO, SAML & EU data residency; DPA, SLA & security review; Volume minutes & se

Plan details, limits and sources →

Billed by: subscription · FinOps profile →

Pricing Plans 2

Published pricing tiers and plan structures.

Tadeus Api Plans Pricing

3 plans

PLANS

Tadeus Api Price Estimates

0 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Tadeus Api Rate Limits

0 limits

RATE LIMITS

Service Levels 1

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

Tadeus API

SLA

FinOps 1

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

Tadeus Api Finops

FINOPS

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs.

Tadeus API API Rules

43 rules · 41 errors 1 warnings 1 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.

Tadeus Api Integration Overlay

9 actions · documentation · tadeus-api-integration-openapi.json

GENERATED

Security Posture 4

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

Tadeus Api Authentication

apiKey · 2 schemes

SECURITY

Tadeus Api Domain Security

TLSv1.3 · DMARC

SECURITY

Tadeus Api Vulnerability Disclosure

Hackerone

SECURITY

Tadeus Api Trust Center

count, audited, claimed, note

SECURITY

Resources

Get Started 3

Portal, sign-up, and the first successful call

GettingStarted

GettingStarted

SignUp

SignUp

Login

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

LLMsTxt

LLMsTxt

AgentSkill

AgentSkill

Design & Contract 5

Pagination, idempotency, versioning, errors, and events

Conventions

ErrorCatalog

Lifecycle

DataModel

Conformance

Build 1

SDKs, sample code, and the tooling you integrate with

ToolCrosswalk

ToolCrosswalk

Access & Security 4

Authentication, authorization, and security posture

Authentication

Compliance

TrustCenter

DomainSecurity

Operate 2

Status, limits, changes, and where to get help

RateLimits

RateLimits

Support

Support

Commercial 4

Pricing, plans, and the legal terms of use

Pricing

TermsOfService

PrivacyPolicy

Plans

Company 4

The organization behind the API

Website

Website

Blog

Blog

BlogRSS

BlogRSS

LinkedIn

Other 1

Properties that don't map to a standard resource type

Overlay

Overlay

Source (apis.yml)

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: self-service
  trial: true
  try_now: false
  public: true
  label: Public
  confidence: high
  source:
  - https://tadeus.net/#pricing
  - https://app.tadeus.net/signup
  - https://app.tadeus.net/api/integration/v1/swagger/?format=openapi
  generated: '2026-08-11'
  method: searched
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/tadeus-api.png
name: Tadeus API
description: 'Tadeus is an AI voice agent platform for workforce platforms: one agent holds real, adaptive voice conversations
  with every employee at scale, in their own language, and returns structured, timestamped records to the HCM, payroll, scheduling
  and compliance systems people already use. It works from the transcript rather than the audio and reports comprehension
  and engagement signals about responses rather than inferring emotion, which is the position its published EU AI Act documentation
  rests on. The public Integration API is a 47-operation REST surface for creating interview templates and campaigns, inviting
  participants individually or in bulk, creating anonymous sessions, and retrieving transcripts, structured results with per-response
  quality signals, and cross-session AI insights. Tadeus went generally available on 14 July 2026 and also ships a hosted,
  first-party MCP server so agents can commission interviews and query results as tool calls.'
url: https://raw.githubusercontent.com/api-evangelist/tadeus-api/refs/heads/main/apis.yml
created: '2026-07-06'
modified: '2026-08-11'
specificationVersion: '0.23'
tags:
- Voice AI
- Research
- Interviews
- Workforce
- Human Resources
- Conversational AI
- Employee Experience
- AI Agents
- MCP
- EU AI Act
- Compliance
- Employee Engagement
tags_raw:
- Voice AI
- Research
- Interviews
- Workforce
- HR Tech
- Conversational AI
- Employee Experience
- AI Agents
- MCP
- EU AI Act
- Compliance
- Employee Engagement
apis:
- aid: tadeus-api:tadeus-api-attempts-api
  name: Tadeus API Attempts API
  description: The attempts API from Tadeus API — 2 operation(s) for attempts.
  humanURL: https://app.tadeus.net/api-examples
  baseURL: https://app.tadeus.net/api/integration/v1
  tags:
  - Attempts
  tags_raw:
  - attempts
  properties:
  - type: OpenAPI
    url: openapi/tadeus-api-attempts-api-openapi.yml
  - type: Documentation
    url: https://app.tadeus.net/api-examples
  - type: Documentation
    url: https://app.tadeus.net/api/integration/v1/swagger/
- aid: tadeus-api:tadeus-api-billing-api
  name: Tadeus API Billing API
  description: The billing API from Tadeus API — 6 operation(s) for billing.
  humanURL: https://app.tadeus.net/api-examples
  baseURL: https://app.tadeus.net/api/integration/v1
  tags:
  - Billing
  tags_raw:
  - billing
  properties:
  - type: OpenAPI
    url: openapi/tadeus-api-billing-api-openapi.yml
  - type: Documentation
    url: https://app.tadeus.net/api-examples
  - type: Documentation
    url: https://app.tadeus.net/api/integration/v1/swagger/
- aid: tadeus-api:tadeus-api-campaigns-api
  name: Tadeus API Campaigns API
  description: The campaigns API from Tadeus API — 5 operation(s) for campaigns.
  humanURL: https://app.tadeus.net/api-examples
  baseURL: https://app.tadeus.net/api/integration/v1
  tags:
  - Campaigns
  tags_raw:
  - campaigns
  properties:
  - type: OpenAPI
    url: openapi/tadeus-api-campaigns-api-openapi.yml
  - type: Documentation
    url: https://app.tadeus.net/api-examples
  - type: Documentation
    url: https://app.tadeus.net/api/integration/v1/swagger/
- aid: tadeus-api:tadeus-api-insights-api
  name: Tadeus API Insights API
  description: The insights API from Tadeus API — 6 operation(s) for insights.
  humanURL: https://app.tadeus.net/api-examples
  baseURL: https://app.tadeus.net/api/integration/v1
  tags:
  - Insights
  tags_raw:
  - insights
  properties:
  - type: OpenAPI
    url: openapi/tadeus-api-insights-api-openapi.yml
  - type: Documentation
    url: https://app.tadeus.net/api-examples
  - type: Documentation
    url: https://app.tadeus.net/api/integration/v1/swagger/
- aid: tadeus-api:tadeus-api-organisation-api
  name: Tadeus API Organisation API
  description: The organisation API from Tadeus API — 2 operation(s) for organisation.
  humanURL: https://app.tadeus.net/api-examples
  baseURL: https://app.tadeus.net/api/integration/v1
  tags:
  - Organisation
  tags_raw:
  - organisation
  properties:
  - type: OpenAPI
    url: openapi/tadeus-api-organisation-api-openapi.yml
  - type: Documentation
    url: https://app.tadeus.net/api-examples
  - type: Documentation
    url: https://app.tadeus.net/api/integration/v1/swagger/
- aid: tadeus-api:tadeus-api-results-api
  name: Tadeus API Results API
  description: The results API from Tadeus API — 4 operation(s) for results.
  humanURL: https://app.tadeus.net/api-examples
  baseURL: https://app.tadeus.net/api/integration/v1
  tags:
  - Results
  tags_raw:
  - results
  properties:
  - type: OpenAPI
    url: openapi/tadeus-api-results-api-openapi.yml
  - type: Documentation
    url: https://app.tadeus.net/api-examples
  - type: Documentation
    url: https://app.tadeus.net/api/integration/v1/swagger/
- aid: tadeus-api:tadeus-api-sessions-api
  name: Tadeus API Sessions API
  description: The sessions API from Tadeus API — 2 operation(s) for sessions.
  humanURL: https://app.tadeus.net/api-examples
  baseURL: https://app.tadeus.net/api/integration/v1
  tags:
  - Sessions
  tags_raw:
  - sessions
  properties:
  - type: OpenAPI
    url: openapi/tadeus-api-sessions-api-openapi.yml
  - type: Documentation
    url: https://app.tadeus.net/api-examples
  - type: Documentation
    url: https://app.tadeus.net/api/integration/v1/swagger/
- aid: tadeus-api:tadeus-api-templates-api
  name: Tadeus API Templates API
  description: The templates API from Tadeus API — 2 operation(s) for templates.
  humanURL: https://app.tadeus.net/api-examples
  baseURL: https://app.tadeus.net/api/integration/v1
  tags:
  - Templates
  tags_raw:
  - templates
  properties:
  - type: OpenAPI
    url: openapi/tadeus-api-templates-api-openapi.yml
  - type: Documentation
    url: https://app.tadeus.net/api-examples
  - type: Documentation
    url: https://app.tadeus.net/api/integration/v1/swagger/
- aid: tadeus-api:tadeus-api-transcripts-api
  name: Tadeus API Transcripts API
  description: The transcripts API from Tadeus API — 2 operation(s) for transcripts.
  humanURL: https://app.tadeus.net/api-examples
  baseURL: https://app.tadeus.net/api/integration/v1
  tags:
  - Transcripts
  tags_raw:
  - transcripts
  properties:
  - type: OpenAPI
    url: openapi/tadeus-api-transcripts-api-openapi.yml
  - type: Documentation
    url: https://app.tadeus.net/api-examples
  - type: Documentation
    url: https://app.tadeus.net/api/integration/v1/swagger/
maintainers:
- FN: Tadeus
  url: mailto:contact@tadeus.net
generated:
  by: apis.io/add
  model: claude-opus-4-8
  confidence: 95
  at: '2026-07-06T14:27:09.314Z'
common:
- type: RateLimits
  url: rate-limits/tadeus-api-rate-limits.yml
- type: Overlay
  url: overlays/tadeus-api-integration-overlay.yaml
- type: Website
  url: https://tadeus.net/
- type: Documentation
  url: https://app.tadeus.net/api/integration/v1/swagger/
- type: APIReference
  url: https://app.tadeus.net/api/integration/v1/swagger/
- type: GettingStarted
  url: https://tadeus.net/api-examples
- type: Support
  url: https://tadeus.net/contact
- type: Blog
  url: https://tadeus.net/blog
- type: BlogRSS
  url: https://tadeus.net/rss.xml
- type: Pricing
  url: https://tadeus.net/#pricing
- type: SignUp
  url: https://app.tadeus.net/signup
- type: Login
  url: https://app.tadeus.net/login/
- type: TermsOfService
  url: https://tadeus.net/terms
- type: PrivacyPolicy
  url: https://tadeus.net/privacy
- type: LinkedIn
  url: https://www.linkedin.com/company/tadeus-ai/
- type: MCPServer
  url: mcp/tadeus-api-mcp.yml
- type: ToolCrosswalk
  url: mcp/tadeus-api-tool-crosswalk.yml
- type: LLMsTxt
  url: llms/tadeus-api-llms.txt
- type: AgentSkill
  url: skills/_index.yml
- type: Authentication
  url: authentication/tadeus-api-authentication.yml
- type: Conventions
  url: conventions/tadeus-api-conventions.yml
- type: ErrorCatalog
  url: errors/tadeus-api-problem-types.yml
- type: Lifecycle
  url: lifecycle/tadeus-api-lifecycle.yml
- type: DataModel
  url: data-model/tadeus-api-data-model.yml
- type: Plans
  url: plans/tadeus-api-plans-pricing.yml
- type: Conformance
  url: conformance/tadeus-api-conformance.yml
- type: Compliance
  url: conformance/tadeus-api-conformance.yml
- type: TrustCenter
  url: security/tadeus-api-trust-center.yml
- type: DomainSecurity
  url: security/tadeus-api-domain-security.yml
x-absences:
  note: Recorded, evidenced absences. Each was probed on 2026-08-11 and each is deliberately NOT given a common[] pointer,
    so nothing here is credited to Tadeus as a published surface.
  surfaces:
  - surface: WellKnown / SecurityTxt
    file: well-known/tadeus-api-well-known.yml
    finding: Every /.well-known/ path on every Tadeus host returns 403 from the edge. No security.txt, no OIDC/OAuth metadata,
      no api-catalog, no ai-plugin.
  - surface: AgentCard
    finding: /.well-known/agent-card.json and /.well-known/agent.json return 403 on tadeus.net, www.tadeus.net and app.tadeus.net.
      No card exists; none was authored.
  - surface: Security (vulnerability disclosure)
    file: security/tadeus-api-vulnerability-disclosure.yml
    finding: No disclosure policy, no security contact, no bug bounty, no security.txt, no /security page (404).
  - surface: SDKs / Packages
    file: packages/tadeus-api-packages.yml
    finding: No first-party client library on npm or PyPI and no GitHub organisation. The official examples use third-party
      `requests` plus cURL.
  - surface: RateLimits
    file: rate-limits/tadeus-api-rate-limits.yml
    finding: No limits documented and no RateLimit-*/Retry-After headers observed. limit_count is 0.
  - surface: StatusPage
    finding: status.tadeus.net does not resolve; https://tadeus.net/status returns 404.
  - surface: Deprecation
    finding: No deprecation or versioning policy published; no Sunset/Deprecation headers.
  - surface: ChangeLog
    finding: https://tadeus.net/changelog returns 404. The company blog carries the GA announcement but is not an API changelog.
  - surface: Webhooks / AsyncAPI
    finding: Webhooks are marketed ("POST /v1/webhooks write back on events" on the homepage, "Webhooks-ready" on the docs)
      but no endpoint, event catalog, payload schema, signing scheme or retry policy is published anywhere, and no webhook
      path exists in the spec.
  - surface: OAuthScopes
    finding: Key-pair auth only; no OAuth 2.0, no scopes. Artifact correctly skipped.
  - surface: Sandbox / CLI / Components / Postman / GitHubOrganization / Roadmap
    finding: None published.
x-enrichment:
  date: '2026-08-11'
  status: enriched
  artifacts_added: 24
  pass: local-v1
x-coverage:
  state: covered

Tadeus API — frequently asked questions

Does Tadeus API have an API?

Yes. APIs.io lists 9 APIs from Tadeus API, including Tadeus API Attempts API, Tadeus API Billing API and Tadeus API Campaigns API, and 6 more.

Is there an OpenAPI specification for the Tadeus API?

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

How do I authenticate with the Tadeus API?

Tadeus API uses bearer-token authentication (apiKey · 2 schemes). The details are profiled on APIs.io as Tadeus Api Authentication.

How much does the Tadeus API cost?

Tadeus API publishes its prices; its STARTER plan is £10/ month as of 2026-10-28. APIs.io lists 3 pricing plans for Tadeus API, with each plan's price, limits and inclusions under Pricing on this page.

Does Tadeus API have an MCP server?

Yes. APIs.io lists 1 MCP server for Tadeus API: Tadeus publishes a first-party, hosted, remote MCP server that lets any MCP-compatible agent (Claude and others) commission real voice interview campaigns with people, monitor them, search the resulti

Is the Tadeus API ready for AI agents?

Tadeus API has a Kin Score of 51.1 out of 100 (developing) and an Agent Readiness score of 28.7 (agent-ready), scored by API Evangelist on 2026-11-06.

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