x402 is an HTTP payment protocol. An unpaid request returns HTTP 402 with a payment offer; sign one offer and retry the same request with proof of payment.

Do I need an account?

No account or API key is needed for these x402 calls.

Base or Solana, paid in USDC. This page focuses on Base.

MiniMax M2.7 Highspeed: pay per request with x402

Call MiniMax M2.7 Highspeed with no account or API key. Pay per request in USDC on Base via x402.

Pay per request

Send a request to ask.singitai.app, get HTTP 402 with the exact price, pay in USDC on Base, get the answer. No signup, no monthly plan.

Provider: MiniMax · Context window: 204,800 tokens

Price

No per-token price is listed for this model. A request costs the minimum request price below.

Price = what the provider charges for the answer + 30% markup + a settlement fee per request ($0.001 on Base, $0.002 on Solana).

Per request, reference request

One short message, max_tokens 800 (30 characters), 12 input tokens. upto settles actual usage, so a real answer normally costs less; exact is flat, with no refund.

Network	upto ceiling (USD)	exact flat price (USD)
Base	$0.0015	$0.0015
Solana	$0.002	$0.002

Prices as of 2026-10-30 10:03:34 UTC (snapshot of ask.singitai.app/v1/models and /pricing.json). Live: /v1/models and /pricing.json. Live values are authoritative and the 402 response states the exact price.

Call it with x402

curl -i https://ask.singitai.app/v1/chat/completions \
  -H 'Content-Type: application/json' \
  -d '{"model":"minimax-m2.7-highspeed","max_tokens":200,"messages":[{"role":"user","content":"Hello"}]}'

The unpaid POST returns HTTP 402 and a PAYMENT-REQUIRED header: base64 JSON, x402 v2. Sign one offer (upto first, then exact; Base then Solana) and retry the same request with the PAYMENT-SIGNATURE header. HTTP 200 returns choices[0].message.content and billing.totalAtomic.

Follow the first paid call walkthrough, developer guide and llms.txt.

For a free try, use the separate model free/deepseek-v4.1-flash: 20 answers a day, no wallet. This is a different model from the one on this page.

Use it from an agent

MCP: https://app.singitai.app/mcp. Free tools without a key: list_models, get_price, list_price_symbols.

The elizaOS plugin @singitai/plugin-singit has a paid-chat action that pays on Base. Its per-call and per-day caps are held in the plugin's memory: in-process, reset on restart, not on-chain, not enforced by SingIt's servers. It does not use AgentAllowance.

Give your agent a budget

Agent spending limits for USDC on Base · How to limit what an AI agent can spend · x402 payments with a budget for AI agents

Related models

All model pages

FAQ

What is x402?: x402 is an HTTP payment protocol. An unpaid request returns HTTP 402 with a payment offer; sign one offer and retry the same request with proof of payment.
Do I need an account?: No account or API key is needed for these x402 calls.
Which network? Base?: Base or Solana, paid in USDC. This page focuses on Base.