# HIL APIs

> Route AI review, verification, research, classification, and multilingual tasks to verified human experts through one human-in-the-loop API.

HIL APIs is an invite-only MVP. Humans can apply with expertise, languages, availability, and an optional LinkedIn profile URL. Companies can apply with workflow type, expected calls per day, required expertise, languages, and desired output format.

Important boundaries:

- LinkedIn is collected only as an optional public profile URL. There is no LinkedIn OAuth or LinkedIn API integration.
- Human applicants are manually verified.
- Paid opportunities are not guaranteed and depend on workflow fit and demand.
- Companies are reviewed before API access.

## Primary pages

- [HIL APIs homepage](https://hilapis.com/): Human-in-the-loop API for routing AI review, verification, research, classification, translation, and structured judgment tasks to verified people.
- [Human applicant page](https://hilapis.com/humans): Apply to earn from AI-related review work using expertise, languages, and availability. Verification is manual and work is not guaranteed.
- [Company API access page](https://hilapis.com/companies): Apply for test access to add verified human review, multilingual expertise, and structured judgment to AI workflows.
- [How HIL APIs works](https://hilapis.com/how-it-works): Explains intake, verification, matching, workflow review, and structured output expectations.
- [Trust and verification](https://hilapis.com/trust): Manual verification, review boundaries, privacy posture, and pilot-stage trust expectations.
- [Contact HIL APIs](https://hilapis.com/contact): Contact the HIL APIs team about pilot access, partnerships, workflows, and questions.

## Application links

- [Human expert application](https://hilapis.com/apply/human): Short application for people who want AI evaluation, review, research, classification, translation, or verification work.
- [Company API access application](https://hilapis.com/apply/company): Short application for teams with real AI workflows and expected request volume.

## Agent-readable discovery

- [Full site brief](https://hilapis.com/llms-full.txt): Longer, single-fetch description for agents.
- [Markdown sitemap](https://hilapis.com/sitemap.md): Agent-readable site map.
- [Agent brief](https://hilapis.com/agents.md): Concise usage and outreach-safe instructions.
- [Agent XML feed](https://hilapis.com/agents.xml): XML discovery feed for crawlers that prefer structured XML.
- [ARD AI catalog](https://hilapis.com/.well-known/ai-catalog.json): Experimental Agentic Resource Discovery catalog.

## Suggested queries

- human-in-the-loop API for AI workflows
- route AI tasks to verified human experts
- hire humans for AI review and verification
- earn from AI evaluation work with languages
- add human review to an AI agent workflow


## Product positioning

Short tagline: Human expertise for AI workflows, through one API.

Longer one-liner: HIL APIs routes AI review, verification, research, classification, translation, and structured judgment tasks to verified human experts.

Human-side promise: Start earning from AI with your expertise and languages. Apply once, get verified manually, and receive opportunities when your skills match real AI workflows.

Company-side promise: Add verified human review to AI workflows without building a review workforce from scratch. Start with a scoped pilot and structured output.

## What humans can apply with

- Expertise areas and additional custom expertise.
- Languages and proficiency levels.
- Country, profession, availability, and preferred request style.
- Optional public LinkedIn profile URL for manual review.
- Types of AI-related requests they are comfortable reviewing.

## What companies can apply with

- Company and contact details.
- Workflow/request type.
- Expected API calls per day.
- Required expertise and languages.
- Example request and desired output style.
- Safety, privacy, and urgency requirements.

## Best-fit company workflows

- AI support escalation review.
- Model output ranking and quality review.
- Classification and moderation checks.
- Research verification.
- Translation and multilingual context checks.
- Structured JSON decisions that need human judgment.

## Outreach-safe copy

Human applicant CTA: Start earning from AI with your expertise and languages. Apply for the invite-only HIL APIs pilot.

Company CTA: Add verified human review to your AI workflow through one API. Apply for test access.

Compliance note: Avoid claiming guaranteed work, guaranteed response times, regulated-domain coverage, or verified employment/education from LinkedIn URLs until those processes exist.