Halesis

Halesis is a company surfaced via the API Evangelist harvest backlog (source: new-submission) and added to the network as a stub for full-pipeline profiling.

Halesis is listed with 1 API on the APIs.io network. Tagged areas include Language Model Platform, Developers, AI Integration, and Chat Completions.

Halesis’ developer surface includes pricing, engineering blog, documentation, and 10 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

15.2/100 emerging ▼ -6.3 Agent 3/100 human only Full breakdown ↓
scored 2026-11-06 · rubric v0.27.0 · Show this score on your site →

AccessPaid

1 API

Language Model PlatformDevelopers AI Integration Chat Completions

Kin Score

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

Composite quality — 15.2/100 · emerging

Contract Quality 0.0 / 21

Developer Ergonomics 1.0 / 17

Access Clarity 8.1 / 17

Operational Transparency 1.2 / 11

Contract Governance 0.0 / 10

Discoverability 3.3 / 9

Regulatory Posture 1.5 / 15

Agent readiness — 3/100 · human only

Machine-Readable Contract 0 / 18

Agentic Access Contract 0 / 10

Documented Reversibility 0 / 6

MCP Server 0 / 12

Machine-Readable Auth 0 / 10

Idempotency 0 / 9

Stable Error Semantics 0 / 8

Request/Response Examples 0 / 7

Rate-Limit Signaling 0 / 7

Typed Event Surface 0 / 6

Agent Skills 0 / 5

Well-Known Catalog 4 / 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 5 / 5

Distinct Operations 3 / 3

MCP Tool Quality 6 / 6

Regulatory Posture applies to this provider. Its tags matched the Horizontal (data, software, accessibility, platform) regime, 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 could not be measured. We hold no machine-readable contract for this provider to read, so there is nothing to measure a write surface against. Excluded rather than scored zero: never-measured and measured-empty are different facts. Publishing an OpenAPI is what makes this facet — and several others — scorable at all.

The six quality facets above are damped to 85 points between them, because the conditional facet above carries the other 15. That is why each facet's contribution is shown against a damped maximum: raising a quality facet moves the composite by 85% of its nominal weight, not 100%. The full arithmetic is at apis.io/rating/.

Show this score on your site.

It updates itself when the score changes. Paste this where you link to your API docs:

<a href="https://apis.io/providers/halesis/"><img src="https://apis.io/badge/halesis/card.svg" alt="Halesis on APIs.io — Kin Score by API Evangelist"></a>

Other styles, a README pill and a shields.io endpoint are on the badge page.

Raise your score.

Agent readiness — checks not met, largest first (exact, from this profile):

Machine-Readable Contract +18 pts — api_specs includes an OpenAPI document
MCP Server +12 pts — deployment.mode + probe verdict on the mcp/ manifest, not the pointer; an unprobed slug falls back to authorship
Agentic Access Contract +10 pts — agentic_access artifact present (x-agentic-access), graded by author
Machine-Readable Auth +10 pts — a served openid-configuration/oauth-authorization-server carrying `issuer` (served), else the securitySchemes class in the provider OpenAPIs — bound (mutualTLS, DPoP, Signature) > negotiable (oauth2 authorizationCode/clientCredentials, openIdConnect) > bearer (http bearer, apiKey)
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)
Stable Error Semantics +8 pts — OpenAPI $refs a shared error schema across 4xx/5xx responses (verified), else common[].type includes ErrorCatalog / ErrorCodes / DeclineCodes

12 more unmet checks in the Agent Readiness table above.

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

Contract Quality scores 0.0 — up to +25.0 composite points
Developer Ergonomics scores 6.0 — up to +18.8 composite points
Contract Governance scores 0.0 — up to +12.0 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/halesis/apis.yml: open an issue on github.com/api-evangelist/halesis 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 →

APIs 1

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

Halesis API

Halesis provides an efficient language model platform for developers, offering chat completions and integration tools.

Halesis API pricing

Prices published by Halesis. A free plan or tier is listed.

Plan	Price
Basic	Free
Team	$19/ mo
Enterprise	Contact sales

Plan details, limits and sources →

Pricing Plans 1

Published pricing tiers and plan structures.

Halesis Plans Pricing

3 plans

PLANS

Service Levels 1

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

Halesis

SLA

Security Posture 1

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

Halesis Domain Security

TLSv1.3 · DNSSEC · DMARC

SECURITY

Resources

Documentation 1

Reference material describing how the API behaves

Documentation

Documentation

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

WellKnown

WellKnown

Build 1

SDKs, sample code, and the tooling you integrate with

GitHubOrganization

GitHubOrganization

Access & Security 1

Authentication, authorization, and security posture

DomainSecurity

DomainSecurity

Operate 1

Status, limits, changes, and where to get help

StatusPage

StatusPage

Commercial 4

Pricing, plans, and the legal terms of use

Plans

TermsOfService

PrivacyPolicy

Pricing

Company 2

The organization behind the API

Blog

Blog

Website

Website

Other 2

Properties that don't map to a standard resource type

Hosts

Hosts

Vendors

Vendors

Source (apis.yml)

aid: halesis
name: Halesis
accessModel:
  pricing: paid
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Paid
  confidence: low
  probe_state: unreadable
  source:
  - plans
  - security
  generated: '2026-11-06'
  method: derived
image: https://cdn.halesis.com/website-files/summary_large_image.jpg
description: 'Halesis is a company surfaced via the API Evangelist harvest backlog (source: new-submission) and added to the
  network as a stub for full-pipeline profiling.'
url: https://raw.githubusercontent.com/api-evangelist/halesis/refs/heads/main/apis.yml
x-type: company
x-source: harvest:new-submission
x-tier: profiled
x-tier-reason: enrichment pass 2026-10-12 (modular-v1; was harvest)
specificationVersion: '0.20'
created: '2026-10-12'
modified: '2026-10-12'
tags:
- Language Model Platform
- Developers
- AI Integration
- Chat Completions
tags_raw:
- Language Model Platform
- API
- Developers
- AI Integration
- Chat Completion
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: Plans
  url: plans/halesis-plans-pricing.yml
- type: WellKnown
  url: well-known/halesis-well-known.yml
- type: Hosts
  url: hosts/halesis-hosts.yml
- type: Vendors
  url: vendors/halesis-vendors.yml
- type: TermsOfService
  url: https://halesis.com/legal/terms
- type: StatusPage
  url: https://status.halesis.com/
- type: PrivacyPolicy
  url: https://halesis.com/legal/privacy
- type: Pricing
  url: https://halesis.com/pricing
- type: Blog
  url: https://halesis.com/blog
- type: GitHubOrganization
  url: https://github.com/halesis
- type: DomainSecurity
  url: security/halesis-domain-security.yml
- type: Website
  url: https://halesis.com
- type: Documentation
  url: https://app.halesis.com/api-docs
apis:
- name: Halesis API
  description: Halesis provides an efficient language model platform for developers, offering chat completions and integration
    tools.
  humanURL: https://app.halesis.com/api-docs
  aid: halesis:halesis-api
x-submission-notes: efficient language model platform
x-submission-probe: root 200, api-docs 200 (Next.js SPA, no spec link), api.halesis.com/v1/models 401 (live, auth), soft-404
  ok
x-coverage:
  state: unreadable
  reason: js-rendered-docs
  detail: API documentation is a Next.js SPA that returns HTML shells without a machine‑readable OpenAPI spec.
  evidence:
  - url: https://app.halesis.com/api-docs
    status: 200
  checked: '2026-10-12'
x-submitted-by: min@halesis.com (apis.io/add, 2026-10-11)
x-enrichment:
  date: '2026-10-12'
  status: enriched
  artifacts_added: 7
  pass: modular-v1
  engine: identity=local,contract=local,surfaces=local,docs=local,regulatory=local

Halesis API — frequently asked questions

Does Halesis have an API?

Yes. APIs.io lists 1 API from Halesis, including Halesis API.

How much does the Halesis API cost?

Halesis publishes its prices; its Team plan is $19/ mo as of 2026-10-12. APIs.io lists 3 pricing plans for Halesis, with each plan's price, limits and inclusions under Pricing on this page.

Is the Halesis API ready for AI agents?

Halesis has a Kin Score of 15.2 out of 100 (emerging) and an Agent Readiness score of 2.9 (human-only), scored by API Evangelist on 2026-11-06.

Work with this as data

Every provider here is available over the APIs.io API and to AI agents over MCP.

MCP server

One button, every client — Claude, Cursor, VS Code and the rest.

https://apis.io/mcp

Tools for providers

9 MCP tools reach this

find_providersBrowse and filter every provider in the catalog.
get_provider_artifactsEvery artifact this provider publishes, grouped by type.
get_provider_operationsEvery operation across all of their OpenAPIs — one call instead of parsing every spec.
get_provider_toolsEvery MCP tool they ship, with the operation each wraps.
get_provider_evidenceHow each part of their score was established. Free — the basis for a claim should not sit behind it.
get_provider_ratingPRO — composite, band, trend and facet scores.
apis_io_searchSTART HERE — APIs, providers and tags for one query, each with its total.
resolveTurn a domain, URL or GitHub org into the provider it belongs to.
find_cohortsEvery scored population of providers in the catalog.

All 92 tools →

Call it yourself

curl for this page

This provider

curl "https://apis.io/api/v1/providers/halesis"

All providers

curl "https://apis.io/api/v1/providers?limit=25"

Every operation they expose

curl "https://apis.io/api/v1/providers/halesis/operations?limit=25"

How their score was established

curl "https://apis.io/api/v1/providers/halesis/evidence"

Calls without X-API-Key need no key. Calls with it need a paid plan — get a key.

Get an API key

Free tier, no form to fill in. Signing in shares your email address with us — we store it to create your key and to recognise you if you sign in with another provider. See our Privacy Policy and Terms.

GitHub Google LinkedIn

A second provider on the same verified email joins the account you already have.