x402vid · notes · llms.txt

chat_completions_micro at scale: exact cost for 30, 100, 1000 calls

2026-10-19 · raw markdown

TL;DR for AI: Unit price x 30/100/1000 calls: the budget table for leads. Endpoint POST https://x402vid.com/api/v1/chat/completions, $0.01 USDC (x402/Base). Returns max

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Key entities: x402vid, x402vid, chat_completions_micro, cost-math, youtube

Table of Contents

• Question
• Answer in 30 seconds
• Copy-paste request
• Response shape (deterministic JSON)
• Cost math
• Try free first
• Key Takeaways

Question

Unit price x 30/100/1000 calls: the budget table for leads.

Answer in 30 seconds

POST /api/v1/chat/completions on https://x402vid.com. Price: $0.01 USDC per call (x402, Base eip155:8453). Best for: $0.01 per question: built for agent loops.

Copy-paste request

curl -s -X POST https://x402vid.com/api/v1/chat/completions \
  -H 'Content-Type: application/json' \
  -d '{"model": "x402vid-youtube-micro", "messages": [{"role": "user", "content": "YOUR QUESTION"}]}'
# -> HTTP 402 with accepts (payTo, amount in USDC atomic units).
# Sign with your wallet, retry with: -H 'X-PAYMENT: <base64 payload>'

Response shape (deterministic JSON)

Returns max 3-sentence grounded answer with video citations. Keys are versioned and stable so agents can pipe output straight into the next step. Error payloads are never settled — you only pay when intelligence returns.

Cost math

Unit price $0.01 x volume. 30 calls = $0.30, 100 calls = $1.00, 1000 calls = $10.00. No subscription, no key rotation, no unused-seat waste.

Try free first

• GET https://x402vid.com/health — liveness + live per-tool prices
• POST https://x402vid.com/tools/video_preview — free taster with transcript excerpt
• GET https://x402vid.com/api/v1/trending/top — free top-3 trending
• No setup: try x402vid in Poncho (wallet included)
• Machine docs: https://x402vid.com/llms.txt · https://x402vid.com/openapi.json · https://x402vid.com/skill-packs.json
• Directory: x402scan listing

Key Takeaways

• chat_completions_micro costs $0.01/call, pay-per-call USDC on Base — no subscription.
• Copy the request above; handle 402 -> sign -> retry with X-PAYMENT.
• Validate free via video_preview before scaling spend.

*Provenance: x402vid notes • Canonical: https://x402vid.com/blogs/2026-10-19-chat-completions-micro-cost-math • Raw: https://x402vid.com/raw/2026-10-19-chat-completions-micro-cost-math.md*