I've written the PAY//AGENT site, but none of the required checks ran. The shell failed to start on every attempt ("Failed to create bridge sockets"), and the browser tool failed too ("Socket directory path is too long"). So npm run build, the typecheck, taste.mjs, browser inspection and git commit are all undone. I've marked the work Incomplete in artifacts/validation.md.

What's in the repository (not committed):

• Pages: Home, Whitepaper, Docs, Playground, Security, About, Terms, Privacy, Risk Disclosure and a custom 404, plus ipfs-404.html so IPFS gateways can show it.
• No framework: plain HTML with one stylesheet (src/assets/site.css) and one script (src/assets/site.js). I couldn't install anything, so Vite and React were out. Every page is its own file and every link is relative, so it works under an IPFS gateway path. Fonts are system font stacks; nothing loads from other sites.
• Playground: runs Request → 402 Challenge → Policy Check → Authorization → Retry → Result in the page. It has Run, Step and Reset, and eight preset scenarios: within policy, over the cap, budget spent, stale quote, wrong network, injected payee, replay, and needs approval. It never connects a wallet or sends a request.
• Honesty labels: all illustrative data is marked SIMULATED, EXAMPLE or PROPOSED. Every page says the site is not the official x402 protocol, not a payment network, not financial advice, and has no token. Maintainer, contact, security contact and the site's address (https://payagent.example) are labelled placeholders.
• Metadata: each page has a title, description, favicon, og:title, og:image, canonical link and structured data. There's also a web manifest, robots.txt and sitemap.xml.
• Build and test scripts: package.json and a lockfile with no dependencies. scripts/build.mjs copies src/ into dist/ and checks the result. scripts/check.mjs checks links, anchors and head tags, tests the eight playground scenarios, and confirms dist/ matches src/ exactly.
• Docs: README (install, preview, rebuild, IPFS deployment), DESIGN.md (tokens, the six type sizes, components, breakpoints), and the validation record.

Things you should know:

• dist/ was copied by hand. Line counts match src/ for every file, but the byte-for-byte check hasn't run. Run npm run check first, then npm run build.
• Design checks were source-only. I found and fixed four issues, including a background texture layered over the text. Nothing was rendered, so nothing about layout, contrast or the first screen at 390px wide has been seen.
• The design probe will likely fail its all-caps check on the SIMULATED / EXAMPLE / PROPOSED badges. I kept them because the brief asks for those exact labels.
• The share image is an SVG at the placeholder address. Some platforms only show PNG or JPEG previews, so export one before launch if link previews matter.

Not delivered: artifacts/validation.md. Under artifacts/, only this step's named outputs leave the machine.

Saved the findings, exact source citations, fixes, and reproductions in .imd-findings.json. Website files remain unchanged.

1. High — bug: mobile lifecycle descriptions collapse into the number column. At 320px and 390px, all six descriptions measure 48px wide, producing a roughly 3,199px-tall list. Place paragraphs in the second grid column below 64rem and the third column above it. Source: site.css:755.

2. Medium — bug: editing an animated simulation mixes old verdicts with new request data. At 1440px, start the default run, then change the service, cap, and spent amount while it animates. It can request search, retry the dataset endpoint, and report success using the old policy verdict. Disable editable controls during execution and retain one scenario snapshot throughout. Source: site.js:553.

3. Medium — bug: custom 404 assets and recovery links break on nested missing paths. At 390px, serve the IPFS fallback at /ipfs/testcid/missing/deep. Its stylesheet and recovery links resolve inside /missing/, leaving an unstyled page whose buttons reach another 404. Resolve those URLs against the content root. Source: 404.html:13.

Repository checks passed. Chromium checks covered every page at 320, 390, and 1440px, all eight simulation presets, keyboard navigation, and reduced motion. WebKit could not launch because required browser libraries were unavailable.

The site presents an agent-payment policy concept through one coherent visual idea: an industrial control desk built from acid-green controls, terminals, and editorial typography.

The requirement checklist follows. Page and asset paths are under src/ unless stated otherwise. “Met” records the requirement’s presence; the defects above remain applicable.

Fixed all three findings: mobile lifecycle columns, simulation consistency, and nested 404 recovery. Rebuilt dist/ and recorded responses in .imd-responses.json.

Build, typecheck, static checks, and DOM/HTTP validation pass. Browser screenshots and rendered checks remain unverified because Chromium could not launch. Details are in artifacts/validation.md.

Not delivered: artifacts/validation.md. Under artifacts/, only this step's named outputs leave the machine.

All three earlier findings are fixed. .imd-findings.json contains {"findings":[]}. Website files are unchanged.

The requirement checklist below groups 90 explicit checks. Every quoted item is met, with its evidence identified.