For AI agents · x402

APIs your AI agents can pay for per call

No API key. Call a route, get HTTP 402, and pay that call in USDC on Solana or Base. The next request with a valid payment returns the result.

See the endpoints Try it OpenAPI llms.txt

Networks: USDC on Solana and Base
From: $0.005 per call
Challenge: HTTP 402 until paid

Paid endpoints

Every price is USDC. The 402 response quotes the exact atomic amount for that call. Solana and Base are both accepted.

Paid API prices in USDC on Solana and Base
Method	Path	Price	Atomic units	Network
GET	/api/guides/search	$0.005	5000	USDC on Solana / Base
POST	/api/automate-wealth/playbook	$0.25	250000	USDC on Solana / Base
POST	/api/instagram/reel-script	$0.10	100000	USDC on Solana / Base
POST	/api/video/caption	$0.08 / started minute	80000	USDC on Solana / Base
POST	/api/video/ffmpeg	$0.02–$0.05	20000–50000	USDC on Solana / Base

GET

/api/guides/search

Search IT and DevOps guide snippets and return a storefront buy link. Chapter markdown is not sold here.

$0.005

5000 atomic

USDC on Solana / Base

Example request · Query

q=linux

Example response

{
  "query": "linux",
  "results": [
    {
      "slug": "linux-ultimate-guide-cheat-sheet-edition",
      "collection": "it-ebooks",
      "title": "Linux Ultimate Guide",
      "snippet": "Command cheatsheets and worked examples.",
      "priceUsd": 22,
      "buyUrl": "https://superuzerai.com/category/it-ebooks/linux-ultimate-guide-cheat-sheet-edition"
    }
  ]
}

curl

curl -i "https://superuzerai.com/api/guides/search?q=linux"

POST

/api/automate-wealth/playbook

A 6-hour launch playbook as JSON. Optional niche and audience.

$0.25

250000 atomic

USDC on Solana / Base

Example request · JSON body

{
  "niche": "DevOps cheat sheets",
  "audience": "freelance developers"
}

Example response

{
  "product": "Automate Passive Income",
  "niche": "DevOps cheat sheets",
  "audience": "freelance developers",
  "horizonHours": 6,
  "steps": [
    { "hour": 1, "name": "Pick one offer", "actions": ["Name a single offer."] }
  ],
  "offer": {
    "title": "Automate Income with digital products using AI",
    "priceUsd": 49,
    "buyUrl": "https://superuzerai.com/category/passive-income/automate-income-with-digital-products-using-ai"
  },
  "note": "Outline only. The full guide is sold separately."
}

curl

curl -i https://superuzerai.com/api/automate-wealth/playbook -H 'content-type: application/json' -d '{"niche":"DevOps cheat sheets","audience":"freelance developers"}'

POST

/api/instagram/reel-script

Hook, script lines, caption, and hashtags. This call does not render or upload video.

$0.10

100000 atomic

USDC on Solana / Base

Example request · JSON body

{
  "topic": "Linux file permissions",
  "angle": "practical"
}

Example response

{
  "hook": "Linux file permissions: the practical version, in under 25 seconds.",
  "script": ["Open on the result."],
  "caption": "Linux file permissions. A practical Reel outline.",
  "hashtags": ["#linux", "#reels"],
  "durationSeconds": 25,
  "note": "Script only. Video is not rendered."
}

curl

curl -i https://superuzerai.com/api/instagram/reel-script -H 'content-type: application/json' -d '{"topic":"Linux file permissions","angle":"practical"}'

POST

/api/video/caption

Download a public video up to 60 seconds and 50 MB, transcribe it locally, and burn word-level captions. The maximum charge is $0.08. Payment returns HTTP 202; poll the status URL for the MP4 and SRT.

$0.08 / started minute

80000 atomic

USDC on Solana / Base

Example request · JSON body

{
  "url": "https://example.com/clip.mp4",
  "language": "en",
  "style": "karaoke"
}

Example response

{
  "status": "queued",
  "jobId": "abc12345abc12345abc12345abc12345",
  "statusUrl": "https://superuzerai.com/api/video/jobs/abc12345abc12345abc12345abc12345",
  "queuePosition": 1,
  "estimatedWaitSeconds": 90,
  "durationSeconds": 60,
  "chargedUsd": "0.08",
  "note": "HTTP 202. Poll statusUrl. outputs.mp4Url and outputs.srtUrl appear when status is done."
}

curl

curl -i https://superuzerai.com/api/video/caption -H 'content-type: application/json' -d '{"url":"https://example.com/clip.mp4","language":"en","style":"karaoke"}'

POST

/api/video/ffmpeg

One local ffmpeg operation on a clip up to 60 seconds and 50 MB. Thumbnail is $0.02 (20000). Trim, 9:16 reframe, and add or replace audio are $0.03 (30000). Concat of 2 to 5 clips is $0.05 (50000). Payment returns HTTP 202; poll the status URL.

$0.02–$0.05

20000–50000 atomic

USDC on Solana / Base

Example request · JSON body

{
  "op": "thumbnail",
  "url": "https://example.com/clip.mp4",
  "atSeconds": 1
}

Other operations:
{ "op": "trim", "url": "https://example.com/clip.mp4", "startSeconds": 0, "endSeconds": 10 }
{ "op": "reframe", "url": "https://example.com/clip.mp4" }
{ "op": "audio", "url": "https://example.com/clip.mp4", "audioUrl": "https://example.com/voice.mp3", "mode": "replace" }
{ "op": "concat", "urls": ["https://example.com/a.mp4", "https://example.com/b.mp4"] }

Example response

{
  "status": "queued",
  "jobId": "def45678def45678def45678def45678",
  "statusUrl": "https://superuzerai.com/api/video/jobs/def45678def45678def45678def45678",
  "queuePosition": 1,
  "estimatedWaitSeconds": 90,
  "durationSeconds": 12.5,
  "chargedUsd": "0.02",
  "note": "HTTP 202. Poll statusUrl. outputs.imageUrl appears when status is done."
}

curl

curl -i https://superuzerai.com/api/video/ffmpeg -H 'content-type: application/json' -d '{"op":"thumbnail","url":"https://example.com/clip.mp4","atSeconds":1}'

An empty or invalid unpaid call still returns HTTP 402. GET /api/health is free and returns status and uptime. A paid video call returns HTTP 202. Poll the free GET /api/video/jobs/{id} URL until the file URL is present. A full video queue returns HTTP 503 and Retry-After before payment.

Try it

Connect Phantom for Solana, or Phantom or MetaMask for Base. Each call is signed in the browser with the x402 client and capped at that route's price. There is no Coinbase account and no thirdweb account.

Wallets: Phantom · MetaMask

How x402 payment works

The client pays the resource itself. There is no checkout page and no account.

01
Call the route
Send the request with no payment header. The examples on this page are enough for the first call.
02
Read the 402
An unpaid call returns HTTP 402. The PAYMENT-REQUIRED header lists two exact USDC accepts: Solana and Base. Each accept has the atomic amount, the USDC asset, and the pay-to address. $0.01 is 10000 atomic units.
03
Pay and retry
Pay on one network, then repeat the same request with PAYMENT-SIGNATURE (x402 v2) or X-PAYMENT (legacy). A header that fails verification or settlement is still unpaid.
04
Use the 200
After settlement a text call returns 200. A video call returns 202 with jobId, statusUrl, queuePosition, and estimatedWaitSeconds. Poll GET /api/video/jobs/{id} for free until status is done and outputs contains the file URL. A full queue returns 503 and Retry-After before payment.

Networks

Pay USDC on Solana mainnet (solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp) or USDC on Base (eip155:8453). Both are listed in the 402 accepts array and in /openapi.json. AgentCash discovery pays those two networks. Solana devnet and Base Sepolia are only for a local 402 check. When MPP is enabled, Tempo payments settle to the Base address, not the Solana wallet.

Discovery

Humans and agents can start at /agents, /llms.txt, or /openapi.json.

OpenAPI
Machine-readable paths, bodies, and x402 prices. AgentCash reads this document.
/openapi.json
llms.txt
Plain-text brief for agents: prices, atomic units, and both networks.
/llms.txt
AgentCash
Wallets that pay Solana mainnet and Base. Merchants register with the discovery check.
https://agentcash.dev
x402scan
Public index of x402 resources. List this API after it is deployed on mainnet.
https://www.x402scan.com

After the API is deployed with mainnet pay-to addresses, register it yourself with npx @agentcash/discovery check, then list it on x402scan and AgentCash. Seller docs for the payment protocol are at Coinbase x402. Questions: support@superuzerai.com.

APIs your AI agents can pay for per call

Paid endpoints

Example request · Query

Example response

curl

Example request · JSON body

Example response

curl

Example request · JSON body

Example response

curl

Example request · JSON body

Example response

curl

Example request · JSON body

Example response

curl

Try it

How x402 payment works

Call the route

Read the 402

Pay and retry

Use the 200

Networks

Discovery

OpenAPI

llms.txt

AgentCash

x402scan