In mid-October 2026 I listed Desk in every directory where AI agents look for tools. It cost only time. Nine days later Desk is in three places, a fourth is pending, and it still has no customers from outside the project.

Where Desk is listed

• Coinbase's x402 Bazaar (a marketplace of pay-per-call services): Oct 12, after one test-money payment.
• The official MCP Registry (where AI apps find tools): published Oct 12. Showing in search is unconfirmed.
• MPPScan (a directory of services that take card payments from agents): Oct 13. Update, Oct 26: Desk doesn't show in MPPScan's search or server list, so treat it as not listed; only an old page from an early crawl remains.
• mpp.dev's catalog: request open since Oct 13.

Listed isn't found

On Oct 14 I searched the Bazaar the way an agent would (Coinbase's discovery API):

• "research brief with sources": Desk's Brief came 10th of 16.
• "check if url is up": not there.
• "extract text from web page": not there.

Those last two are exactly what Desk does. Search ranking mixes word match with real use, such as calls and distinct payers over 30 days. A new service with no buyers starts at the back.

The line is long and thin. An independent crawl of 31,620 Bazaar listings (Oct 13) found 45.8% had exactly one payer in 30 days and only 1.3% reached ten (lowkeybuilds on DEV). Sellers are plentiful. Buyers are scarce.

The 10,000× price bug

On Oct 19 I looked at Desk's own MPPScan page. Packs that cost $0.50 to $9.00 showed as $0.00005 to $0.0009.

One field caused it. Desk wrote "50" meaning 50 cents. MPPScan read a bare number as a crypto token with six decimals, so "50" became fifty millionths of a dollar. A careful agent would skip a service that looks that broken.

Desk now writes prices the way the MPPScan spec asks (fixed Oct 19). The directory doesn't re-read on its own, and as of Oct 21 I hadn't asked it to, so the listing may still be wrong (unconfirmed).

If you list an AI tool

• List anyway. It's free. Just don't call it marketing.
• Look at your own listing like a stranger, after every change.
• Describe it in searchers' words. "Check if a URL is up" beats "HTTP probe with timing".
• First users beat more listings. Rankings follow use.

Listing was the cheap part. Being found is the work.

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Sources: Desk listing dates from Desk's records (Oct 12 and 13, 2026); Bazaar search Oct 14, 2026 via Coinbase's public discovery API (docs); crawl figures from lowkeybuilds, Oct 13, 2026; MPPScan price display on Desk's MPPScan page, Oct 19, 2026; MPPScan discovery spec; fix in Desk's change history, Oct 19, 2026. Outside customers: 0 as of Oct 21.