Wdh

Call any of seven paid-per-call CLI utilities on WDH.sh — big-file transfer (≤5 GB), URL shortening, Chart.js rendering, hosted markdown pages, QR codes, paid feature requests, paid support tickets — settled in USDC on Base mainnet via x402 with no signup or API key. Use when the user wants any of these utilities and has an EVM wallet, or mentions x402, USDC, micropayment, pay-per-call, or any of the wdh.sh hostnames (files.wdh.sh, short.wdh.sh, charts.wdh.sh, md.wdh.sh, qr.wdh.sh, feedback.wdh.sh, support.wdh.sh). Costs $0.001–$5.00 USDC per call depending on tool.

WDH.sh

A family of seven small, paid-per-call HTTP services for agents and humans. One CLI wraps every endpoint and signs payments automatically using the agent's wallet — no signups, no API keys, no subscriptions. Every call is settled in USDC on Base mainnet via the x402 protocol.

Prerequisites

• An EVM wallet with USDC on Base mainnet (eip155:8453). $1 of USDC covers thousands of calls except for feedback ($1) and support ($5).
• Private key exported as WDH_WALLET_PRIVATE_KEY (a hex string starting with 0x).
• Node.js 20+ (the CLI ships as @wdhsh/cli on npm and runs anywhere Node runs).

The buyer never submits an on-chain transaction directly. The Coinbase x402 facilitator handles settlement and pays gas. See https://x402.org for protocol detail.

Services Overview

Tool	Cost (USDC)	Purpose
files	$0.001 – $0.10 (size-tiered)	Big-file transfer to a public expiring URL (≤5 GB, ≤7 days)
short	$0.001	URL shortener — links never expire by default
charts	$0.005	Chart rendering proxy (Chart.js payload → PNG)
md	$0.002	Publish a markdown file as a hosted HTML page (≤30 days)
qr	$0.001	QR code image (PNG or SVG)
feedback	$1.00	Paid feature request — opens a Linear issue on the WDH team's tracker
support	$5.00	Paid support ticket — opens a high-priority Linear issue

Install

The CLI is published as @wdhsh/cli on npm. Use it via bunx or npx for zero-install, or install globally:

bunx @wdhsh/cli --help        # zero-install, one-shot
npm i -g @wdhsh/cli && wdh --help

export WDH_WALLET_PRIVATE_KEY=0x...

Once the env var is set, every command pays automatically. Without it the CLI refuses to run.

Commands

files upload — Big-file transfer

Multipart upload to files.wdh.sh. Returns a public download URL.

bunx @wdhsh/cli files upload ./report.pdf --expires 7d
bunx @wdhsh/cli files upload ./build.tar.gz                   # 24h default TTL

Flag	Required	Default	Description
<path>	yes	—	Path to the file to upload (up to 5 GB)
--expires <ttl>	no	24h	TTL like 30m, 24h, 7d. Max 7 days

Size-tiered pricing: $0.001 (≤10 MB), $0.005 (≤100 MB), $0.02 (≤500 MB), $0.05 (≤2 GB), $0.10 (≤5 GB).

short create — URL shortener

Returns a short https://short.wdh.sh/<slug> URL. Links never expire by default — safe for business cards, printed materials, anywhere a permanent redirect target is wanted.

bunx @wdhsh/cli short create https://example.com/very/long/path
bunx @wdhsh/cli short create https://example.com --slug launch
bunx @wdhsh/cli short create https://example.com --expires 30d

Flag	Required	Default	Description
<url>	yes	—	URL to shorten (http or https only)
--slug <s>	no	auto-generated	Custom slug. Matches ^[A-Za-z0-9_-]{3,32}$
--expires <ttl>	no	never	TTL like 24h, 30d. Omit and the link persists indefinitely

charts plot — Chart.js rendering

Proxies a Chart.js payload to the chartsplat renderer. Writes raw PNG bytes to stdout (or to --out if provided).

bunx @wdhsh/cli charts plot \
  --type bar \
  --data '{"labels":["Q1","Q2","Q3","Q4"],"datasets":[{"label":"Revenue","data":[50,75,60,90]}]}' \
  > chart.png

Flag	Required	Default	Description
--type <kind>	yes	—	Chart.js chart type (bar, line, pie, doughnut, radar, etc.)
--data <json>	yes	—	Chart.js JSON payload as a string (parsed and forwarded as the request body)

See chartsplat docs for the full schema and supported chart types.

md publish — Hosted markdown pages

Publishes a local markdown file as a styled HTML page on md.wdh.sh. Returns the public URL.

bunx @wdhsh/cli md publish ./notes.md
bunx @wdhsh/cli md publish ./post.md --title "Launch notes"
bunx @wdhsh/cli md publish ./scratch.md --expires 24h

Flag	Required	Default	Description
<file>	yes	—	Path to a local markdown file (max 1 MB)
--title <t>	no	Shared markdown	Page title for the rendered HTML
--expires <ttl>	no	7d	TTL like 24h, 7d, 30d. Max 30 days

Renderer is markdown-it with HTML escaped and javascript: / data: / vbscript: / file: links dropped.

qr generate — QR code images

Renders a QR code as a PNG (default) or SVG.

bunx @wdhsh/cli qr generate "https://wdh.sh" --out wdh.png
bunx @wdhsh/cli qr generate "wifi:T:WPA;S:...;P:..." --size 1024 > wifi.png
bunx @wdhsh/cli qr generate "ping" --format svg > ping.svg

Flag	Required	Default	Description
<data>	yes	—	Text or URL to encode (max 2048 chars)
--size <px>	no	512	Output size in pixels. Clamped to 64–2048
--format <png|svg>	no	png	Output format
--out <file>	no	stdout	Write the image to a file path instead

feedback — Paid feature requests

Files a $1.00 paid feature request as a Linear issue on the WDH team's tracker. Returns the issue URL.

bunx @wdhsh/cli feedback "Add Solana support" --body "We'd use this for..."
echo "long-form body here" | bunx @wdhsh/cli feedback "Title goes here"
bunx @wdhsh/cli feedback "Bug in qr" --body "..." --contact [e-mail]

Flag	Required	Default	Description
<title>	yes	—	Issue title (max 200 chars)
--body <text>	no	from stdin	Issue body (max 10 000 chars). Omit to read from stdin
--contact <email>	no	—	Optional reply-to address

support — Paid support tickets

Files a $5.00 paid support ticket as a high-priority Linear issue. Severity maps to Linear priority. --contact is required so the team can follow up.

bunx @wdhsh/cli support "Files endpoint 500s" \
  --contact [e-mail] \
  --body "every /init returns 500 since 14:00 UTC" \
  --severity high

cat incident.md | bunx @wdhsh/cli support "x402 settlement timing out" \
  --contact [e-mail] --severity critical

Flag	Required	Default	Description
<title>	yes	—	Ticket title (prefixed with [support], max 200 chars)
--contact <email>	yes	—	Reply-to email
--body <text>	no	from stdin	Ticket body (max 10 000 chars). Omit to read from stdin
--severity <lvl>	no	medium	low | medium | high | critical → Linear priority 4|3|2|1

Output Handling

• Most commands print a single line to stdout: the resulting URL (files, short, md, feedback, support) or the path that was written (qr --out <file>).
• qr (without --out) and charts write raw image bytes to stdout — always pipe to a file: > chart.png.

Tips

• Wallet hygiene. Use a throwaway Base wallet for the agent — load it with the budget you're willing to spend and revoke by deleting the key.
• Idempotency for feedback / support. Those endpoints accept an Idempotency-Key header server-side (24h cache). The CLI doesn't surface that flag yet — re-running a command will file a duplicate Linear issue and charge again.
• Short links are permanent by default. Omitting --expires on short create means the redirect persists indefinitely — fine for business cards, printed QR targets, social bios. Add --expires only if you want it to lapse.
• Files are temporary. files upload defaults to a 24-hour TTL. Pass --expires 7d for the maximum.
• Charts payload. The --data JSON is a full Chart.js config (or just the inner data object — chartsplat accepts both). For OHLC / candlestick charts pass { x, o, h, l, c } points.

Error Handling

Error	Cause	Fix
WDH_WALLET_PRIVATE_KEY env var is required	Env var unset	export WDH_WALLET_PRIVATE_KEY=0x...
402 retry fails / insufficient funds	Wallet has no USDC on Base	Top up; even $1 covers thousands of small calls
failed: 413 on files upload	File >5 GB	Split the upload; 5 GB is the per-call max
failed: 400 on md publish	Markdown >1 MB	Trim or split the document
invalid duration	Bad --expires value	Use formats like 30m, 24h, 7d
failed: 503 on short create --slug	8 slug collisions in a row	Pick a different slug or let it auto-generate

Related

• CLI on npm: @wdhsh/cli
• Per-service web docs: wdh.sh/docs
• The x402 protocol: x402.org
• The standalone chartsplat-x402 skill (uses chartsplat directly without WDH's proxy markup): chartsplat-x402 on ClawHub.