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.
Real signal across most facets with visible, nameable gaps — the contract exists but is thin, or the portal is good while governance and commercial terms are absent.
API Evangelist profiles HeyMilo the way a machine reads it — 44 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 — HeyMilo scores 51.0/100 (developing), with a separate agent-readiness read of 52/100 (agent ready). 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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</a>More shapes, themes and sizes → · Score as JSON · How badges work
How we profile HeyMilo
Each block below is one kind of artifact we hold for HeyMilo. 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 18
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.
HeyMilo ATS API
The ATS API from HeyMilo — 4 operation(s) for ats.
HeyMilo Candidates API
Ingest candidates into an interviewer's workflow (sync or async, single or bulk) and list candidates with their progress.
HeyMilo Design Template Groups API
View grouped design template configurations.
HeyMilo Design Templates API
View design templates that control the candidate interview UI.
HeyMilo Domains API
Manage custom domains for white-labelled interview URLs.
HeyMilo Email Template Groups API
View grouped email template configurations.
HeyMilo Email Templates API
View email templates configured for candidate outreach.
HeyMilo Health API
The Health API from HeyMilo — 1 operation(s) for health.
HeyMilo Interview Templates API
View interview templates, reusable agent configurations cloned from a blueprint posting (workflow, questions, criteria, agent settings).
HeyMilo Interviewers API
Create, read, update, and manage interviewers. An interviewer (posting) combines job details with an AI agent configuration and agentic workflow.
HeyMilo Interviews API
Retrieve full interview results (scorecard, transcript, resume evaluation) and manage per-interview metadata.
HeyMilo Phone Numbers API
List provisioned phone numbers for SMS and voice agents.
HeyMilo Questions API
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 ...
HeyMilo Schema Discovery API
The Schema Discovery API from HeyMilo — 2 operation(s) for schema discovery.
HeyMilo Sender Emails API
Manage sender email addresses used for candidate communications.
HeyMilo Voices API
Browse the workspace voice registry for AI interviewer voices.
HeyMilo Webhooks API
Register, list, and manage webhook endpoints that receive real-time event notifications.
HeyMilo Workspaces API
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.
Scroll within the panel for all 18 ·
Open Collections 19
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 COLLECTIONHeyMilo Public ATS API
OPEN COLLECTIONHeyMilo Public ATS Candidates API
OPEN COLLECTIONHeyMilo Public ATS Design Template Groups API
OPEN COLLECTIONHeyMilo Public ATS Design Templates API
OPEN COLLECTIONHeyMilo Public ATS Domains API
OPEN COLLECTIONHeyMilo Public ATS Email Template Groups API
OPEN COLLECTIONHeyMilo Public ATS Email Templates API
OPEN COLLECTIONHeyMilo Public ATS Health API
OPEN COLLECTIONHeyMilo Public ATS Interview Templates API
OPEN COLLECTIONHeyMilo Public ATS Interviewers API
OPEN COLLECTIONHeyMilo Public ATS Interviews API
OPEN COLLECTIONHeyMilo Public ATS Phone Numbers API
OPEN COLLECTIONHeyMilo Public ATS Questions API
OPEN COLLECTIONHeyMilo Public ATS Schema Discovery API
OPEN COLLECTIONHeyMilo Public ATS Sender Emails API
OPEN COLLECTIONHeyMilo Public ATS Voices API
OPEN COLLECTIONHeyMilo Public ATS Webhooks API
OPEN COLLECTIONHeyMilo Public ATS Workspaces API
OPEN COLLECTIONScroll within the panel for all 19 ·
MCP Servers 1
Model Context Protocol servers expose these APIs directly to AI agents. We profile them because agent-native access is the fastest-growing way this provider's capabilities actually get used.
Model Context Protocol servers that expose these APIs to AI agents.
HeyMilo MCP Server
HeyMilo hosts a read-only Model Context Protocol server that exposes the same data surfaces an authenticated user sees in app.heymilo.ai, scoped to the workspaces the identity c...
MCP SERVERRate Limits 1
Rate limits are the difference between a demo that works and a production integration that doesn't fall over. Publishing them is an operational-transparency signal — and a hard requirement for any agent that plans its own throughput.
Documented rate limits and quota policies.
Heymilo Rate Limits
RATE LIMITSEvent Specifications 1
Not every API is request/response. AsyncAPI describes the event-driven and streaming side — the webhooks and channels — so the asynchronous half of the interface is documented the same way the synchronous half is.
AsyncAPI definitions for this provider's event-driven and streaming APIs.
HeyMilo Webhooks
HeyMilo delivers real-time HTTP notifications across the candidate interview lifecycle. Register a webhook via the Public REST API (POST /api/v2/webhooks) with a destination URL...
ASYNCAPISecurity Posture 3
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 HeyMilo — 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 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 within the panel 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
← All providers · Data indexed from github.com/api-evangelist/heymilo · machine-readable index on apis.io
This is an independent, third-party profile of HeyMilo, 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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