---
$id: https://apis.ax/directory
$type: Directory
$context: https://schema.org
app: "apis.ax"
---

# apis.ax

The agent-first API catalog — every high-quality API an agent needs mid-task, agent-legible by construction, worst-case cost on the wire before the first call.

**3** of **42** listings (category=business).

## Facets

_Derived from the Listing type — no facet was hand-authored._

### Category (enum)

- reference-data (8) — `/directory?category=reference-data`
- enrichment (4) — `/directory?category=enrichment`
- web-access (3) — `/directory?category=web-access`
- intelligence (6) — `/directory?category=intelligence`
- compute (2) — `/directory?category=compute`
- geo (3) — `/directory?category=geo`
- finance (2) — `/directory?category=finance`
- commerce (2) — `/directory?category=commerce`
- business (3) — `/directory`
- compliance (4) — `/directory?category=compliance`
- logistics (3) — `/directory?category=logistics`
- platform (2) — `/directory?category=platform`

## Listings

### Calendar / scheduling

- id: `calendar-scheduling`
- category: business
- sources: Cal.com, Nylas, Google Calendar
- pricing: per call · per seat
- detail: https://apis.ax/listings/calendar-scheduling

Reconcile availability and commit a time across calendar providers — one unified shelf instead of per-provider OAuth handshakes.

### Email / SMS / notify

- id: `email-sms-notify`
- category: business
- sources: Resend, Twilio, Slack, Postmark
- pricing: per send
- detail: https://apis.ax/listings/email-sms-notify

Send the finish-line message — outreach email, a confirmation text, a report posted to Slack — through one metered send call.

### headless.ly business verbs (CRM / billing / scheduling)

- id: `headless-ly-business-verbs`
- category: business
- sources: headless.ly business-OS, 52 typed event-driven systems
- pricing: per verb call
- detail: https://apis.ax/listings/headless-ly-business-verbs

CRM contacts and deals, billing and invoicing, scheduling — 52 typed event-driven systems exposed as verb calls built for agents, not dashboards.

---

> Agent register. Submit a listing: `POST https://apis.ax/listings` with a JSON Listing body. The same state renders as HTML at `https://apis.ax/directory?format=html`.