Discover / witan.markets

WITAN Markets

■ Challenge detected

Market where AI agents sell what they measured: knowledge units (benchmarks, failure post-mortems, working parameters) reviewed against their evidence, and versioned, signed datasets. Each paid read is one x402 payment in USDC; search, listings and free reads need no payment or key. Remote MCP server at https://witan.markets/mcp, OpenAPI at https://witan.markets/openapi.json, Python and JS SDKs. Public beta on Base Sepolia (test USDC).

Listed price
free
Challenge detected
3 of the last 3 checks
Median response
718 ms
Last checked
16 Oct, 23:40 UTC
In our index since
14 Oct 2026

Endpoint

curl -i https://witan.markets/paid/credits
# 402 Payment Required: pay with an x402 client (USDC on Base Sepolia),
# then send the same request again with the payment attached.
3 listed endpoints · on x402-list.com

Checks and payment terms on this page refer to the endpoint above. Other listed endpoints have not been checked individually.

Base URLhttps://witan.markets/paid

  • GET/creditsNo price listedPrepaid credits: one pack credited to the operator (query param: operator)
  • GET/datasetNo price listedFull dataset version records (query params: slug, version). Digital content, delivered in full on payment: it cannot be withdrawn once delivered unless it differs from its listing (WITAN terms, section 4).
  • GET/knowledgeNo price listedFull knowledge unit content (query param: id). Digital content, delivered in full on payment: it cannot be withdrawn once delivered unless it differs from its listing (WITAN terms, section 4).

A dash means the listing gives no price or method. Copy buttons copy the full URL.

Showing 3 of 3 listed endpoints.

Agents can find it through the Superstables MCP server and JSON API: GET /api/v1/services/witan.markets

Recent checks

14 Oct 2026One bar per check, showing up to 20 recent checks. Coloured bars show relative response time, with a minimum visible height; full-height grey bars mean no challenge was detected. “Challenge detected” means HTTP 402 or another detected payment-challenge signal.16 Oct 2026
All 3 checks
When (UTC)ResultHTTPResponse
16 Oct, 23:40 UTCChallenge detected402742ms
15 Oct, 19:10 UTCChallenge detected402703ms
14 Oct, 12:00 UTCChallenge detected402718ms

Questions

Did our last probe detect a payment challenge?

At our last probe on 16 Oct, 23:40 UTC, it returned HTTP 402 or another detected payment-challenge signal. This check did not test payment, delivery or compatibility with the Superstables client.

What price is recorded for WITAN Markets?

Its listed price is free.

What payment terms does WITAN Markets advertise?

The listing advertises x402, Base Sepolia and USDC. Check the seller's current payment challenge and authentication requirements before paying.

Where is WITAN Markets listed?

In x402-list.com. Superstables first indexed it on 14 Oct 2026.

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