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HeyMilo
HeyMilo AI is an agentic recruiting platform for high-volume hiring teams — staffing agencies, corporate recruiters, BPOs, franchises, and data-annotation operations. It combines candidate sourcing from your ATS, conversational SMS and smart-form pre-screening, resume analysis, and live AI voice and video interviews (with built-in cheat detection), then scores and ranks candidates with analytics, reporting, and fully white-labeled workflows. The HeyMilo Public API (v2.0.0, base https://api.heymilo.ai) exposes programmatic control over interviewers (postings), candidate ingestion, interview data and transcripts, questions, webhooks, templates, voices, phone numbers, domains, and ATS push/resolve — authenticated with an X-API-KEY header and rate limited to 300 requests per minute. A read-only hosted MCP server at https://mcp.heymilo.ai/mcp lets any MCP client query candidates, jobs, and interviews in natural language. HeyMilo raised $6M to scale agentic recruiting and is backed by Canaan Partners.
HeyMilo publishes 18 APIs on the APIs.io network, including ATS API, Candidates API, Design Template Groups API, and 15 more. Tagged areas include Company, Recruiting, Hiring, Human Resources, and HR Tech.
The HeyMilo catalog on APIs.io includes 1 event-driven AsyncAPI specification.
HeyMilo’s developer surface includes documentation, API reference, getting-started guide, signup flow, engineering blog, support, authentication, and 25 more developer resources.
18 APIs
1 MCP Servers
Company Recruiting Hiring Human Resources HR Tech Artificial Intelligence AI Agents Interviewing Candidate Screening Voice AI Webhooks ATS Integration
On this page
Kin Score
APIs 18
MCP Servers 1
Rate Limits 1
Event Specs 1
Security Posture 3
Agentic Access 1
Resources 32
apis.yml
50 Operational Transparency
Composite quality — 58.5/100 · strong
Contract Quality
17.7 / 25
Developer Ergonomics
12.5 / 20
Commercial Clarity
10.0 / 20
Operational Transparency
6.5 / 13
Agent readiness — 55/100 · agent ready
Machine-Readable Contract
18 / 18
Agentic Access Contract
10 / 10
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
6 / 6
Agent Skills
5 / 5
Well-Known Catalog
4 / 4
Consent & Bot Identity
0 / 3
A2A Agent Card
0 / 8
Dry-Run / Simulate Mode
0 / 4
Individual APIs this provider publishes, each with its own machine-readable definition.
Scroll for all 18
Model Context Protocol servers that expose these APIs to AI agents.
Documented rate limits and quota policies.
AsyncAPI definitions for this provider's event-driven and streaming APIs.
Authentication, domain security, vulnerability disclosure, and trust-center signals.
Recommended x-agentic-access execution contracts for AI agents.
Get Started 3
Portal, sign-up, and the first successful call
Documentation 3
Reference material describing how the API behaves
Agent Surfaces 5
MCP servers, agent skills, and machine-readable catalogs
Design & Contract 7
Pagination, idempotency, versioning, errors, and events
Scroll for all 7
Build 1
SDKs, sample code, and the tooling you integrate with
Access & Security 4
Authentication, authorization, and security posture
Operate 3
Status, limits, changes, and where to get help
Commercial 2
Pricing, plans, and the legal terms of use
Company 3
The organization behind the API
Other 1
Properties that don't map to a standard resource type
Source (apis.yml)
aid: heymilo
name: HeyMilo
description: HeyMilo AI is an agentic recruiting platform for high-volume hiring teams — staffing agencies, corporate recruiters,
BPOs, franchises, and data-annotation operations. It combines candidate sourcing from your ATS, conversational SMS and smart-form
pre-screening, resume analysis, and live AI voice and video interviews (with built-in cheat detection), then scores and
ranks candidates with analytics, reporting, and fully white-labeled workflows. The HeyMilo Public API (v2.0.0, base https://api.heymilo.ai)
exposes programmatic control over interviewers (postings), candidate ingestion, interview data and transcripts, questions,
webhooks, templates, voices, phone numbers, domains, and ATS push/resolve — authenticated with an X-API-KEY header and rate
limited to 300 requests per minute. A read-only hosted MCP server at https://mcp.heymilo.ai/mcp lets any MCP client query
candidates, jobs, and interviews in natural language. HeyMilo raised $6M to scale agentic recruiting and is backed by Canaan
Partners.
url: https://raw.githubusercontent.com/api-evangelist/heymilo/refs/heads/main/apis.yml
accessModel:
pricing: unknown
onboarding: self-serve
trial: false
try_now: false
public: false
label: Self-serve signup
confidence: medium
source:
- authentication
generated: '2026-07-22'
method: derived
image: https://www.heymilo.ai/images/og-default.png
x-type: company
x-source: vc-portfolio
x-backed-by:
- canaan-partners
specificationVersion: '0.20'
created: '2026-07-17'
modified: '2026-07-19'
tags:
- Company
- Recruiting
- Hiring
- Human Resources
- HR Tech
- Artificial Intelligence
- AI Agents
- Interviewing
- Candidate Screening
- Voice AI
- Webhooks
- ATS Integration
maintainers:
- FN: Kin Lane
email: kin@apievangelist.com
- FN: APIs.json
email: info@apis.io
apis:
- aid: heymilo:heymilo-ats-api
name: HeyMilo ATS API
description: The ATS API from HeyMilo — 4 operation(s) for ats.
humanURL: https://docs.heymilo.ai/api-reference/public-api/documentation
baseURL: https://api.heymilo.ai
tags:
- ATS
properties:
- type: OpenAPI
url: openapi/heymilo-ats-api-openapi.yml
- type: Documentation
url: https://docs.heymilo.ai/api-reference/public-api/documentation
- type: APIReference
url: https://docs.heymilo.ai/api-reference
- type: Authentication
url: authentication/heymilo-authentication.yml
- type: Webhooks
url: asyncapi/heymilo-webhooks.yml
- type: ErrorCatalog
url: errors/heymilo-problem-types.yml
- type: Conventions
url: conventions/heymilo-conventions.yml
- type: DataModel
url: data-model/heymilo-data-model.yml
- aid: heymilo:heymilo-candidates-api
name: HeyMilo Candidates API
description: Ingest candidates into an interviewer's workflow (sync or async, single or bulk) and list candidates with their
progress.
humanURL: https://docs.heymilo.ai/api-reference/public-api/documentation
baseURL: https://api.heymilo.ai
tags:
- Candidates
properties:
- type: OpenAPI
url: openapi/heymilo-candidates-api-openapi.yml
- type: Documentation
url: https://docs.heymilo.ai/api-reference/public-api/documentation
- type: APIReference
url: https://docs.heymilo.ai/api-reference
- type: Authentication
url: authentication/heymilo-authentication.yml
- type: Webhooks
url: asyncapi/heymilo-webhooks.yml
- type: ErrorCatalog
url: errors/heymilo-problem-types.yml
- type: Conventions
url: conventions/heymilo-conventions.yml
- type: DataModel
url: data-model/heymilo-data-model.yml
- aid: heymilo:heymilo-design-template-groups-api
name: HeyMilo Design Template Groups API
description: View grouped design template configurations.
humanURL: https://docs.heymilo.ai/api-reference/public-api/documentation
baseURL: https://api.heymilo.ai
tags:
- Design Template Groups
properties:
- type: OpenAPI
url: openapi/heymilo-design-template-groups-api-openapi.yml
- type: Documentation
url: https://docs.heymilo.ai/api-reference/public-api/documentation
- type: APIReference
url: https://docs.heymilo.ai/api-reference
- type: Authentication
url: authentication/heymilo-authentication.yml
- type: Webhooks
url: asyncapi/heymilo-webhooks.yml
- type: ErrorCatalog
url: errors/heymilo-problem-types.yml
- type: Conventions
url: conventions/heymilo-conventions.yml
- type: DataModel
url: data-model/heymilo-data-model.yml
- aid: heymilo:heymilo-design-templates-api
name: HeyMilo Design Templates API
description: View design templates that control the candidate interview UI.
humanURL: https://docs.heymilo.ai/api-reference/public-api/documentation
baseURL: https://api.heymilo.ai
tags:
- Design Templates
properties:
- type: OpenAPI
url: openapi/heymilo-design-templates-api-openapi.yml
- type: Documentation
url: https://docs.heymilo.ai/api-reference/public-api/documentation
- type: APIReference
url: https://docs.heymilo.ai/api-reference
- type: Authentication
url: authentication/heymilo-authentication.yml
- type: Webhooks
url: asyncapi/heymilo-webhooks.yml
- type: ErrorCatalog
url: errors/heymilo-problem-types.yml
- type: Conventions
url: conventions/heymilo-conventions.yml
- type: DataModel
url: data-model/heymilo-data-model.yml
- aid: heymilo:heymilo-domains-api
name: HeyMilo Domains API
description: Manage custom domains for white-labelled interview URLs.
humanURL: https://docs.heymilo.ai/api-reference/public-api/documentation
baseURL: https://api.heymilo.ai
tags:
- Domains
properties:
- type: OpenAPI
url: openapi/heymilo-domains-api-openapi.yml
- type: Documentation
url: https://docs.heymilo.ai/api-reference/public-api/documentation
- type: APIReference
url: https://docs.heymilo.ai/api-reference
- type: Authentication
url: authentication/heymilo-authentication.yml
- type: Webhooks
url: asyncapi/heymilo-webhooks.yml
- type: ErrorCatalog
url: errors/heymilo-problem-types.yml
- type: Conventions
url: conventions/heymilo-conventions.yml
- type: DataModel
url: data-model/heymilo-data-model.yml
- aid: heymilo:heymilo-email-template-groups-api
name: HeyMilo Email Template Groups API
description: View grouped email template configurations.
humanURL: https://docs.heymilo.ai/api-reference/public-api/documentation
baseURL: https://api.heymilo.ai
tags:
- Email Template Groups
properties:
- type: OpenAPI
url: openapi/heymilo-email-template-groups-api-openapi.yml
- type: Documentation
url: https://docs.heymilo.ai/api-reference/public-api/documentation
- type: APIReference
url: https://docs.heymilo.ai/api-reference
- type: Authentication
url: authentication/heymilo-authentication.yml
- type: Webhooks
url: asyncapi/heymilo-webhooks.yml
- type: ErrorCatalog
url: errors/heymilo-problem-types.yml
- type: Conventions
url: conventions/heymilo-conventions.yml
- type: DataModel
url: data-model/heymilo-data-model.yml
- aid: heymilo:heymilo-email-templates-api
name: HeyMilo Email Templates API
description: View email templates configured for candidate outreach.
humanURL: https://docs.heymilo.ai/api-reference/public-api/documentation
baseURL: https://api.heymilo.ai
tags:
- Email Templates
properties:
- type: OpenAPI
url: openapi/heymilo-email-templates-api-openapi.yml
- type: Documentation
url: https://docs.heymilo.ai/api-reference/public-api/documentation
- type: APIReference
url: https://docs.heymilo.ai/api-reference
- type: Authentication
url: authentication/heymilo-authentication.yml
- type: Webhooks
url: asyncapi/heymilo-webhooks.yml
- type: ErrorCatalog
url: errors/heymilo-problem-types.yml
- type: Conventions
url: conventions/heymilo-conventions.yml
- type: DataModel
url: data-model/heymilo-data-model.yml
- aid: heymilo:heymilo-health-api
name: HeyMilo Health API
description: The Health API from HeyMilo — 1 operation(s) for health.
humanURL: https://docs.heymilo.ai/api-reference/public-api/documentation
baseURL: https://api.heymilo.ai
tags:
- Health
properties:
- type: OpenAPI
url: openapi/heymilo-health-api-openapi.yml
- type: Documentation
url: https://docs.heymilo.ai/api-reference/public-api/documentation
- type: APIReference
url: https://docs.heymilo.ai/api-reference
- type: Authentication
url: authentication/heymilo-authentication.yml
- type: Webhooks
url: asyncapi/heymilo-webhooks.yml
- type: ErrorCatalog
url: errors/heymilo-problem-types.yml
- type: Conventions
url: conventions/heymilo-conventions.yml
- type: DataModel
url: data-model/heymilo-data-model.yml
- aid: heymilo:heymilo-interview-templates-api
name: HeyMilo Interview Templates API
description: View interview templates, reusable agent configurations cloned from a blueprint posting (workflow, questions,
criteria, agent settings).
humanURL: https://docs.heymilo.ai/api-reference/public-api/documentation
baseURL: https://api.heymilo.ai
tags:
- Interview Templates
properties:
- type: OpenAPI
url: openapi/heymilo-interview-templates-api-openapi.yml
- type: Documentation
url: https://docs.heymilo.ai/api-reference/public-api/documentation
- type: APIReference
url: https://docs.heymilo.ai/api-reference
- type: Authentication
url: authentication/heymilo-authentication.yml
- type: Webhooks
url: asyncapi/heymilo-webhooks.yml
- type: ErrorCatalog
url: errors/heymilo-problem-types.yml
- type: Conventions
url: conventions/heymilo-conventions.yml
- type: DataModel
url: data-model/heymilo-data-model.yml
- aid: heymilo:heymilo-interviewers-api
name: HeyMilo Interviewers API
description: Create, read, update, and manage interviewers. An interviewer (posting) combines job details with an AI agent
configuration and agentic workflow.
humanURL: https://docs.heymilo.ai/api-reference/public-api/documentation
baseURL: https://api.heymilo.ai
tags:
- Interviewers
properties:
- type: OpenAPI
url: openapi/heymilo-interviewers-api-openapi.yml
- type: Documentation
url: https://docs.heymilo.ai/api-reference/public-api/documentation
- type: APIReference
url: https://docs.heymilo.ai/api-reference
- type: Authentication
url: authentication/heymilo-authentication.yml
- type: Webhooks
url: asyncapi/heymilo-webhooks.yml
- type: ErrorCatalog
url: errors/heymilo-problem-types.yml
- type: Conventions
url: conventions/heymilo-conventions.yml
- type: DataModel
url: data-model/heymilo-data-model.yml
- aid: heymilo:heymilo-interviews-api
name: HeyMilo Interviews API
description: Retrieve full interview results (scorecard, transcript, resume evaluation) and manage per-interview metadata.
humanURL: https://docs.heymilo.ai/api-reference/public-api/documentation
baseURL: https://api.heymilo.ai
tags:
- Interviews
properties:
- type: OpenAPI
url: openapi/heymilo-interviews-api-openapi.yml
- type: Documentation
url: https://docs.heymilo.ai/api-reference/public-api/documentation
- type: APIReference
url: https://docs.heymilo.ai/api-reference
- type: Authentication
url: authentication/heymilo-authentication.yml
- type: Webhooks
url: asyncapi/heymilo-webhooks.yml
- type: ErrorCatalog
url: errors/heymilo-problem-types.yml
- type: Conventions
url: conventions/heymilo-conventions.yml
- type: DataModel
url: data-model/heymilo-data-model.yml
- aid: heymilo:heymilo-phone-numbers-api
name: HeyMilo Phone Numbers API
description: List provisioned phone numbers for SMS and voice agents.
humanURL: https://docs.heymilo.ai/api-reference/public-api/documentation
baseURL: https://api.heymilo.ai
tags:
- Phone Numbers
properties:
- type: OpenAPI
url: openapi/heymilo-phone-numbers-api-openapi.yml
- type: Documentation
url: https://docs.heymilo.ai/api-reference/public-api/documentation
- type: APIReference
url: https://docs.heymilo.ai/api-reference
- type: Authentication
url: authentication/heymilo-authentication.yml
- type: Webhooks
url: asyncapi/heymilo-webhooks.yml
- type: ErrorCatalog
url: errors/heymilo-problem-types.yml
- type: Conventions
url: conventions/heymilo-conventions.yml
- type: DataModel
url: data-model/heymilo-data-model.yml
- aid: heymilo:heymilo-questions-api
name: HeyMilo Questions API
description: 'Create, read, update, delete, and reorder questions and criteria for an interviewer''s workflow. Covers all
modalities: voice, sms, form, resume_eligibility, resume_scoring, and voice_tags.'
humanURL: https://docs.heymilo.ai/api-reference/public-api/documentation
baseURL: https://api.heymilo.ai
tags:
- Questions
properties:
- type: OpenAPI
url: openapi/heymilo-questions-api-openapi.yml
- type: Documentation
url: https://docs.heymilo.ai/api-reference/public-api/documentation
- type: APIReference
url: https://docs.heymilo.ai/api-reference
- type: Authentication
url: authentication/heymilo-authentication.yml
- type: Webhooks
url: asyncapi/heymilo-webhooks.yml
- type: ErrorCatalog
url: errors/heymilo-problem-types.yml
- type: Conventions
url: conventions/heymilo-conventions.yml
- type: DataModel
url: data-model/heymilo-data-model.yml
- aid: heymilo:heymilo-schema-discovery-api
name: HeyMilo Schema Discovery API
description: The Schema Discovery API from HeyMilo — 2 operation(s) for schema discovery.
humanURL: https://docs.heymilo.ai/api-reference/public-api/documentation
baseURL: https://api.heymilo.ai
tags:
- Schema Discovery
properties:
- type: OpenAPI
url: openapi/heymilo-schema-discovery-api-openapi.yml
- type: Documentation
url: https://docs.heymilo.ai/api-reference/public-api/documentation
- type: APIReference
url: https://docs.heymilo.ai/api-reference
- type: Authentication
url: authentication/heymilo-authentication.yml
- type: Webhooks
url: asyncapi/heymilo-webhooks.yml
- type: ErrorCatalog
url: errors/heymilo-problem-types.yml
- type: Conventions
url: conventions/heymilo-conventions.yml
- type: DataModel
url: data-model/heymilo-data-model.yml
- aid: heymilo:heymilo-sender-emails-api
name: HeyMilo Sender Emails API
description: Manage sender email addresses used for candidate communications.
humanURL: https://docs.heymilo.ai/api-reference/public-api/documentation
baseURL: https://api.heymilo.ai
tags:
- Sender Emails
properties:
- type: OpenAPI
url: openapi/heymilo-sender-emails-api-openapi.yml
- type: Documentation
url: https://docs.heymilo.ai/api-reference/public-api/documentation
- type: APIReference
url: https://docs.heymilo.ai/api-reference
- type: Authentication
url: authentication/heymilo-authentication.yml
- type: Webhooks
url: asyncapi/heymilo-webhooks.yml
- type: ErrorCatalog
url: errors/heymilo-problem-types.yml
- type: Conventions
url: conventions/heymilo-conventions.yml
- type: DataModel
url: data-model/heymilo-data-model.yml
- aid: heymilo:heymilo-voices-api
name: HeyMilo Voices API
description: Browse the workspace voice registry for AI interviewer voices.
humanURL: https://docs.heymilo.ai/api-reference/public-api/documentation
baseURL: https://api.heymilo.ai
tags:
- Voices
properties:
- type: OpenAPI
url: openapi/heymilo-voices-api-openapi.yml
- type: Documentation
url: https://docs.heymilo.ai/api-reference/public-api/documentation
- type: APIReference
url: https://docs.heymilo.ai/api-reference
- type: Authentication
url: authentication/heymilo-authentication.yml
- type: Webhooks
url: asyncapi/heymilo-webhooks.yml
- type: ErrorCatalog
url: errors/heymilo-problem-types.yml
- type: Conventions
url: conventions/heymilo-conventions.yml
- type: DataModel
url: data-model/heymilo-data-model.yml
- aid: heymilo:heymilo-webhooks-api
name: HeyMilo Webhooks API
description: Register, list, and manage webhook endpoints that receive real-time event notifications.
humanURL: https://docs.heymilo.ai/api-reference/public-api/documentation
baseURL: https://api.heymilo.ai
tags:
- Webhooks
properties:
- type: OpenAPI
url: openapi/heymilo-webhooks-api-openapi.yml
- type: Documentation
url: https://docs.heymilo.ai/api-reference/public-api/documentation
- type: APIReference
url: https://docs.heymilo.ai/api-reference
- type: Authentication
url: authentication/heymilo-authentication.yml
- type: Webhooks
url: asyncapi/heymilo-webhooks.yml
- type: ErrorCatalog
url: errors/heymilo-problem-types.yml
- type: Conventions
url: conventions/heymilo-conventions.yml
- type: DataModel
url: data-model/heymilo-data-model.yml
- aid: heymilo:heymilo-workspaces-api
name: HeyMilo Workspaces API
description: List the workspaces accessible to the authenticated caller. API-key callers receive a single entry; OAuth callers
receive every workspace they are a member of.
humanURL: https://docs.heymilo.ai/api-reference/public-api/documentation
baseURL: https://api.heymilo.ai
tags:
- Workspaces
properties:
- type: OpenAPI
url: openapi/heymilo-workspaces-api-openapi.yml
- type: Documentation
url: https://docs.heymilo.ai/api-reference/public-api/documentation
- type: APIReference
url: https://docs.heymilo.ai/api-reference
- type: Authentication
url: authentication/heymilo-authentication.yml
- type: Webhooks
url: asyncapi/heymilo-webhooks.yml
- type: ErrorCatalog
url: errors/heymilo-problem-types.yml
- type: Conventions
url: conventions/heymilo-conventions.yml
- type: DataModel
url: data-model/heymilo-data-model.yml
common:
- type: AgenticAccess
url: agentic-access/heymilo-agentic-access.yml
- type: DomainSecurity
url: security/heymilo-domain-security.yml
- type: DeveloperPortal
url: https://docs.heymilo.ai
- type: Documentation
url: https://docs.heymilo.ai/documentation/get-started/landing
- type: APIReference
url: https://docs.heymilo.ai/api-reference
- type: GettingStarted
url: https://docs.heymilo.ai/documentation/get-started/what-is-heymilo
- type: Website
url: https://www.heymilo.ai
- type: SignUp
url: https://www.heymilo.ai/book-a-demo
- type: Blog
url: https://www.heymilo.ai/blog
- type: Support
url: https://docs.heymilo.ai
- type: GitHubOrganization
url: https://github.com/heymilo
- type: TermsOfService
url: https://www.heymilo.ai/terms-of-service
- type: PrivacyPolicy
url: https://www.heymilo.ai/privacy-policy
- type: StatusPage
url: https://status.heymilo.ai
- type: TrustCenter
url: https://trust.heymilo.ai
- type: Compliance
url: https://trust.warden-ai.com/heymilo
- type: LinkedIn
url: https://www.linkedin.com/company/heymilo/
- type: Integrations
url: https://www.heymilo.ai/integrations
- type: MCPServer
url: mcp/heymilo-mcp.yml
- type: LLMsTxt
url: llms/heymilo-llms.txt
- type: WellKnown
url: well-known/heymilo-well-known.yml
- type: Authentication
url: authentication/heymilo-authentication.yml
- type: Conventions
url: conventions/heymilo-conventions.yml
- type: RateLimits
url: rate-limits/heymilo-rate-limits.yml
- type: ErrorCatalog
url: errors/heymilo-problem-types.yml
- type: Lifecycle
url: lifecycle/heymilo-lifecycle.yml
- type: Conformance
url: conformance/heymilo-conformance.yml
- type: Webhooks
url: asyncapi/heymilo-webhooks.yml
- type: AsyncAPI
url: asyncapi/heymilo-webhooks.yml
- type: DataModel
url: data-model/heymilo-data-model.yml
- type: Components
url: components/heymilo-components.yml
- type: AgentSkill
url: skills/_index.yml
- type: Overlay
url: overlays/heymilo-openapi-overlay.yaml
x-enrichment:
date: '2026-07-19'
status: backfilled
pass: local-v1
note: backfilled from .gitignore signal + verified work evidence