x402 AI Starter
Vercel Labs' reference Next.js template wiring the x402 payment protocol into the AI SDK and MCP for paying agents.
- Sato Score55
- ChainsBase
x402 AI Starter is an open-source developer tool on Base, with last code activity on 2025-12-11 (Quiet). Sato Score 55/100 (how open, active and verifiable it is, not a safety grade), as of 2026-10-21. How the score works →
See how to install x402 AI Starter →Last commit Dec 11, 2025 · ★ 72
Listed from vercel.com on 2026-07-19. Install: not attempted. Evidence →
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Watch x402 AI Starter
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Prove you control the domain and correct this page — description, links, tags, chains. A claim proves control, not verification: it never changes the Sato Score.
Claim this listing →Overview
x402 AI Starter is Vercel Labs' fullstack template demonstrating x402 — an HTTP-based accountless payment protocol — combined with the Vercel AI SDK, AI Gateway, and Coinbase CDP wallets. It shows a paying agent, a monetized remote MCP server, and paywalled APIs/pages, testable on Base Sepolia before moving to mainnet. The repository was archived (read-only) in June 2026, so treat it as a frozen reference rather than an actively updated template.
Sato Score
55/100· MediumHow open, active & verifiable — not a safety or returns grade.
- Maintenance & liveness
- 20/35
- Code transparency
- 18/20
- Interface verifiability
- 0/10
- Docs & demo
- 4/10
- Listing transparency & provenance
- 10/15
- Independent verification
- 3/10
Evidence — listed vs checked · what the words mean
Listed from vercel.com on 2026-07-19. Install: not attempted.
| Claim | Value | Evidence | Source | Checked |
|---|---|---|---|---|
| Chains supported | Base | self-reported | vercel.com | as of 2026-10-21 |
| Verification status | Unverified — not independently reviewed | self-reported | vercel.com | as of 2026-10-21 |
| Recent activity | last commit 2025-12-11 | observed | github.com/vercel-labs/x402-ai-starter | 2026-10-21 |
| Install works | documented by the project, not run by Sato Hubnot attempted: no falsifiable install+entry probe from deploy_spec | self-reported | github.com/vercel-labs/x402-ai-starter | as of 2026-09-14 |
| Website answers | answered (HTTP 200) | observed | vercel.com | 2026-10-21 |
| Daily check record | 90 of 90 daily checks since 2026-07-23 succeededa success rate of our checks, not uptime; the source is this listing's own history | observed | — | 2026-10-20 |
| Works with | AI SDK, Model Context Protocol (MCP), Coinbase Developer Platform (CDP), AI Gat…confidence 0.85 | self-reported | github.com/vercel-labs/x402-ai-starter | as of 2026-07-25 |
| Demo | https://x402-ai-starter.vercel.app/confidence 0.95 | self-reported | github.com/vercel-labs/x402-ai-starter | as of 2026-07-25 |
| Demo available | yesconfidence 0.95 | self-reported | github.com/vercel-labs/x402-ai-starter | as of 2026-07-25 |
| Sato Score | 55/100 (Medium)how open, active and verifiable — not a safety or quality grade | computed | satohub.ai | 2026-10-21 |
Self-reported rows are the project’s own words, dated when we recorded them — not a check. Only reproduced and reviewed rows carry a mark. None of these rows is a safety or quality rating.
Install — not run by us — no falsifiable install+entry probe from deploy_spec
Runtime: Node.js (Next.js template, pnpm) — repository archived June 2026, read-only
git clone https://github.com/vercel-labs/x402-ai-starter cd x402-ai-starter pnpm install pnpm dev pnpm dev → http://localhost:3000 (includes a remote MCP server exposing paid tools)
You supply: CDP_API_KEY_ID (Coinbase Developer Platform key), CDP_API_KEY_SECRET, CDP_WALLET_SECRET — RISK: wallet secret controlling funds, Vercel OIDC token or AI Gateway API key (for AI Gateway), NETWORK env var: base-sepolia (default testnet) or base (mainnet)
MCP invocation: remote MCP server with paid tools, served by the running Next.js app
Read from the project’s own docs as of 2026-09-14. What a deploy spec is →
Observed record — 91 daily checks since 2026-07-23
- Succeeded
- 91
- Failed
- 0
- Their error
- 0
- Unattributed
- 0
This is the share of our daily checks that succeeded — not an availability guarantee. A check can fail because the host was down, because our runner timed out, or because the network in between dropped it, and only the first of those is a fact about this project. Failures are split by what we can attribute; anything we cannot attribute is counted, not hidden. 40 of these checks predate 2026-09-01, when the probe counted a bot-block (HTTP 403) as a failure and recorded no reason for any failure. Every one of them passed, so the rate covers them too.
Last 30 days — to 2026-10-21, one point per UTC day
A gap is a day we have no attributable observation — never a zero. Thirty points is the whole shape the free layer carries; the daily rows behind it stay in the snapshot series.
Details
- Chains
- Base
- Agent types
- Reference template
- Open source
- Yes
- Works with
- AI SDK, Model Context Protocol (MCP), Coinbase Developer Platform (CDP), AI Gateway, Next.js
- Last checked
- 2026-10-21
Marketplace Signals
- ▸ Demo available
Verification status reflects evidence reviewed by Sato Hub. Self-reported claims are never presented as verified.
Where x402 AI Starter fits
Related concepts: How Agents Use Wallets, What Are Onchain Agents?
Listing History
Recorded changes to x402 AI Starter's listing — status, verification, Sato Score, and recent releases. Full history is kept in the listing record.
- Sep 26, 2026Edited: entity class, resource type
- Jul 25, 2026Auto-enriched: has demo, demo url, supported integrations
- Jul 24, 2026Sato Hub began tracking this listing
- Jul 20, 2026Edited: deploy spec
- Jul 19, 2026Listed on Sato Hub
Compared with
Appears in
Related Resources
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Model Context Protocol (MCP)
ActiveAnthropic's open standard for connecting AI systems to external tools and data sources.
Reference
QuestionsWhat people ask about this pageShowHide
Questions people ask about x402 AI Starter
- Is x402 AI Starter open source?
- Yes. x402 AI Starter is open source under the Unknown license; the repository is https://github.com/vercel-labs/x402-ai-starter. Checked as of 2026-10-21.
- Which chains does x402 AI Starter support?
- x402 AI Starter lists support for Base as of 2026-10-21.
- Is x402 AI Starter still maintained?
- The most recent code activity Sato Hub observed was on 2025-12-11 (last commit 2025-12-11), which Sato Hub labels "Quiet". Posts on X are not counted as maintenance. Activity is a recency signal, not a quality judgment.
- How do I install or run x402 AI Starter?
- Node.js (Next.js template, pnpm) — repository archived June 2026, read-only. Install: git clone https://github.com/vercel-labs/x402-ai-starter && cd x402-ai-starter && pnpm install && pnpm dev. Entry: pnpm dev → http://localhost:3000 (includes a remote MCP server exposing paid tools). This is taken from the project's own documentation and has not been reproduced by Sato Hub. It runs as an MCP server (remote MCP server with paid tools, served by the running Next.js app).
- Is x402 AI Starter verified on Sato Hub?
- No independent verification is on record for x402 AI Starter; its verification status is "Unverified" and its Sato Score is 55 of 100. Self-reported is not verified, and the score is not a safety, quality or returns grade.
Cite this pagePlain text, APA or BibTeXShowHide
Cite this page
Sato Hub. "x402 AI Starter — Sato Hub." Sato Hub, updated 2026-10-21, accessed 2026-10-21. https://satohub.ai/resources/x402-ai-starterData last refreshed 2026-10-21; this page is rebuilt daily. Citations carry the date so a reader can tell which snapshot a claim came from. Catalog data is licensed CC-BY-4.0.
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