Do I need an API key to use the gif API?

No. countdown.gif is x402-native — there is no signup and no API key. Your client makes the call, receives a 402 with payment requirements, signs a USDC payment, and retries. Funds come from a wallet you control.

How much does the gif API cost?

$0.0060 USDC per call, charged per request. There are no monthly fees, seats, or minimums — you pay only for the calls you make.

Can I try the gif API for free first?

Yes. Add ?trial=1 (or the header X-2s-Trial: 1) to get a free real call per endpoint per hour, so you can verify the response shape before wiring payment.

Which networks and tokens are supported?

USDC on Base (via EIP-3009 transferWithAuthorization) or Solana (SPL transfer), using the open x402 payment protocol.

How do I call countdown.gif from an AI agent or MCP host?

Use @2sio/sdk (TypeScript), 2sio (Python), or the @2sio/mcp server for any MCP host — each handles the probe → sign → retry loop for you. See the code samples on this page.

countdown.gif

Animated countdown GIF from the current UTC time to endDate. Always uncached. Supports 5 templates (default, minimal, neon, retro, corporate) and full customization: colors, fonts, dimensions, padding, cell padding, labels, dividers. Animates for `seconds` frames at `fps`.

price

$0.0060 USDC per call

method

GET/api/countdown/gif

payment

x402 v2 · USDC on Base (EIP-3009) or Solana (SPL transfer)

auth

None. Sign the payment, retry with PAYMENT-SIGNATURE.

Overview

The gif API is a pay-per-call countdown endpoint built for AI agents and autonomous software. Animated countdown GIF from the current UTC time to endDate.

There is no signup and no API key. An agent (or any HTTP client) hits the endpoint, receives an x402 "402 Payment Required" challenge, signs a sub-cent USDC payment on Base or Solana, and retries — the data comes back on the paid request. That makes it a drop-in gif data source for an agent tool-use loop, an MCP host, or a backend that needs countdown data on demand without onboarding to yet another vendor portal.

Use cases

Give an AI agent live gif lookups as a tool, with no API key to provision or rotate — the agent pays per call from a wallet you fund.
Enrich records in a data pipeline with countdown data, paying only for the calls you actually make instead of a monthly seat.
Ground LLM answers in authoritative countdown data to cut hallucination, then optionally request a signed response for verifiability.
Prototype against the live gif API in minutes using the free trial call, then flip to per-call x402 payment for production with no code change.

Parameters

Name	Type	Description
`endDate`required	string	date-time
`template`	string	one of: default \| minimal \| neon \| retro \| corporate
`seconds`	integer	min 1 · max 60
`fps`	integer	min 1 · max 10
`width`	integer	min 200 · max 1600
`height`	integer	min 80 · max 800
`padding`	integer	min 0 · max 200
`cellPadding`	integer	min 0 · max 200
`digitFontSize`	integer	min 20 · max 300
`labelFontSize`	integer	min 6 · max 80
`labelPaddingY`	integer	min 0 · max 60
`digitPaddingY`	integer	min -60 · max 60
`letterSpacing`	number	min 0 · max 20
`bg`	string	max 40 chars
`fg`	string	max 40 chars
`labelColor`	string	max 40 chars
`dividerColor`	string	max 40 chars
`digitFont`	string	one of: mono \| sans
`labelFont`	string	one of: mono \| sans
`digitWeight`	string	one of: regular \| bold
`showLabels`
`showDays`
`dividerChar`	string	min 1 chars · max 3 chars
`expiredText`	string	min 1 chars · max 30 chars
`labelDays`	string	min 1 chars · max 12 chars
`labelHours`	string	min 1 chars · max 12 chars
`labelMinutes`	string	min 1 chars · max 12 chars
`labelSeconds`	string	min 1 chars · max 12 chars

Code samples

cURLbash

# 1. Probe with no auth → 402 envelope with PaymentRequirements
curl -sS 'https://2s.io/api/countdown/gif?endDate=example&template=default&seconds=1&fps=1&width=200&height=80&padding=0&cellPadding=0&digitFontSize=20&labelFontSize=6&labelPaddingY=0&digitPaddingY=-60&letterSpacing=0&bg=example&fg=example&labelColor=example&dividerColor=example&digitFont=mono&labelFont=mono&digitWeight=regular&showLabels=false&showDays=false&dividerChar=example&expiredText=example&labelDays=example&labelHours=example&labelMinutes=example&labelSeconds=example'

# 2. Sign + retry with PAYMENT-SIGNATURE:
curl -sS 'https://2s.io/api/countdown/gif?endDate=example&template=default&seconds=1&fps=1&width=200&height=80&padding=0&cellPadding=0&digitFontSize=20&labelFontSize=6&labelPaddingY=0&digitPaddingY=-60&letterSpacing=0&bg=example&fg=example&labelColor=example&dividerColor=example&digitFont=mono&labelFont=mono&digitWeight=regular&showLabels=false&showDays=false&dividerChar=example&expiredText=example&labelDays=example&labelHours=example&labelMinutes=example&labelSeconds=example' \
  -H 'PAYMENT-SIGNATURE: <base64-json-payload>'

# Or use the canonical runner (handles probe → sign → retry):
#   EVM_PRIVATE_KEY=0x... node --env-file=.env.local \
#     --experimental-strip-types scripts/x402-pay.ts \
#     'https://2s.io/api/countdown/gif?endDate=example&template=default&seconds=1&fps=1&width=200&height=80&padding=0&cellPadding=0&digitFontSize=20&labelFontSize=6&labelPaddingY=0&digitPaddingY=-60&letterSpacing=0&bg=example&fg=example&labelColor=example&dividerColor=example&digitFont=mono&labelFont=mono&digitWeight=regular&showLabels=false&showDays=false&dividerChar=example&expiredText=example&labelDays=example&labelHours=example&labelMinutes=example&labelSeconds=example'

TypeScript / Node — @2sio/sdktypescript

import { TwoS } from '@2sio/sdk'

const client = new TwoS({
  privateKey: process.env.EVM_PRIVATE_KEY as `0x${string}`,
})

const result = await client.countdown.gif({
  "endDate": "example",
  "template": "default",
  "seconds": 1,
  "fps": 1,
  "width": 200,
  "height": 80,
  "padding": 0,
  "cellPadding": 0,
  "digitFontSize": 20,
  "labelFontSize": 6,
  "labelPaddingY": 0,
  "digitPaddingY": -60,
  "letterSpacing": 0,
  "bg": "example",
  "fg": "example",
  "labelColor": "example",
  "dividerColor": "example",
  "digitFont": "mono",
  "labelFont": "mono",
  "digitWeight": "regular",
  "showLabels": false,
  "showDays": false,
  "dividerChar": "example",
  "expiredText": "example",
  "labelDays": "example",
  "labelHours": "example",
  "labelMinutes": "example",
  "labelSeconds": "example"
})

console.log('endpoint:', result.endpoint)
console.log('cost:', result.costUsd, 'USDC')
console.log('tx:', result.settlement?.txHash)
console.log('data:', result.data)

Python — 2siopython

import os
from twosio import TwoS

client = TwoS(private_key=os.environ["EVM_PRIVATE_KEY"])

result = client.countdown.gif(endDate="example", template="default", seconds=1, fps=1, width=200, height=80, padding=0, cellPadding=0, digitFontSize=20, labelFontSize=6, labelPaddingY=0, digitPaddingY=-60, letterSpacing=0, bg="example", fg="example", labelColor="example", dividerColor="example", digitFont="mono", labelFont="mono", digitWeight="regular", showLabels=False, showDays=False, dividerChar="example", expiredText="example", labelDays="example", labelHours="example", labelMinutes="example", labelSeconds="example")

print("endpoint:", result.endpoint)
print("cost:", result.cost_usd, "USDC")
print("tx:", (result.settlement or {}).get("tx_hash"))
print("data:", result.data)

MCP — Claude Desktop / AgentKit / any MCP hostjson

// 1. Add @2sio/mcp to your MCP host config (Claude Desktop example below).
//    EVM_PRIVATE_KEY funds x402 payments per call.

// claude_desktop_config.json
{
  "mcpServers": {
    "2sio": {
      "command": "npx",
      "args": ["-y", "@2sio/mcp"],
      "env": { "EVM_PRIVATE_KEY": "0x..." }
    }
  }
}

// 2. Once the server is running, agents call this tool via standard MCP:

{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/call",
  "params": {
    "name": "countdown.gif",
    "arguments": {
      "endDate": "example",
      "template": "default",
      "seconds": 1,
      "fps": 1,
      "width": 200,
      "height": 80,
      "padding": 0,
      "cellPadding": 0,
      "digitFontSize": 20,
      "labelFontSize": 6,
      "labelPaddingY": 0,
      "digitPaddingY": -60,
      "letterSpacing": 0,
      "bg": "example",
      "fg": "example",
      "labelColor": "example",
      "dividerColor": "example",
      "digitFont": "mono",
      "labelFont": "mono",
      "digitWeight": "regular",
      "showLabels": false,
      "showDays": false,
      "dividerChar": "example",
      "expiredText": "example",
      "labelDays": "example",
      "labelHours": "example",
      "labelMinutes": "example",
      "labelSeconds": "example"
    }
  }
}

FAQ

Do I need an API key to use the gif API?: No. countdown.gif is x402-native — there is no signup and no API key. Your client makes the call, receives a 402 with payment requirements, signs a USDC payment, and retries. Funds come from a wallet you control.
How much does the gif API cost?: $0.0060 USDC per call, charged per request. There are no monthly fees, seats, or minimums — you pay only for the calls you make.
Can I try the gif API for free first?: Yes. Add ?trial=1 (or the header X-2s-Trial: 1) to get a free real call per endpoint per hour, so you can verify the response shape before wiring payment.
Which networks and tokens are supported?: USDC on Base (via EIP-3009 transferWithAuthorization) or Solana (SPL transfer), using the open x402 payment protocol.
How do I call countdown.gif from an AI agent or MCP host?: Use @2sio/sdk (TypeScript), 2sio (Python), or the @2sio/mcp server for any MCP host — each handles the probe → sign → retry loop for you. See the code samples on this page.

Discovery

/api/directory — full catalog of every endpoint
/openapi.json — OpenAPI 3.1 spec (per-op x-payment-info, x402Payment security)
/.well-known/x402 — machine-readable service descriptor for x402-aware crawlers
/.well-known/mcp/server-card.json — MCP SEP-1649 server card
/llms.txt — plain-text manifest for LLM ingestion

Related: gif api · countdown gif api · gif api for ai agents · x402 countdown api · gif api no api key · pay per call gif api · countdown api