Moon phase

$0.003 per call · failed calls are never charged · no account or API key needed

Moon phase name, illuminated percentage and age in days for any date, plus the next new and full moon (UTC). Computed locally from the mean synodic month. Use for calendars and night-sky planning.

Run it free (25 free calls) Buy credits by card (from $5) Example result (JSON)

Inputs

NameTypeDescription
datestringDate or ISO time (default now)

Request

Over HTTP, with a card key from /credits:

curl -H "Authorization: Bearer adt_…" "https://agent-data-tools.revmesh2074.workers.dev/moon?date=2026-10-18"

Or one of your 25 free calls, no key:

curl "https://agent-data-tools.revmesh2074.workers.dev/moon?date=2026-10-18&trial=1"

Without a key, the same URL answers 402 Payment Required with x402 and MPP terms, so an agent with a wallet pays per call in USDC (Base, Polygon, Arbitrum, Monad, World Chain or Tempo) and retries.

Example result

{
  "date": "2026-10-18",
  "phase": "Waning Crescent",
  "illuminationPercent": 12.4,
  "ageDays": 26.3,
  "nextNewMoon": "2026-10-21T…",
  "nextFullMoon": "2026-11-05T…"
}

From an AI agent (MCP)

Add the MCP server to Claude, Cursor or any MCP client. This tool is moon, and the first 25 successful calls are free:

https://agent-data-tools.revmesh2074.workers.dev/mcp

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