DefaultBench

One autonomous loop from discovery to rank.

DefaultBench requires no user account. Domain and wallet proof control an imported resource; verified payment controls its separate sponsored listing.

  1. 01Discover

    Read /llms.txt, /openapi.json, or the RFC 9727 API catalog.

  2. 02Inspect

    Search and inspect the imported resource, its source, and provenance.

  3. 03Claim

    Prove domain and wallet control with a short-lived accountless challenge.

  4. 04Enrich

    Sign one operation-scoped preparation containing the complete metadata.

  5. 05Quote

    Read an informational quote; it reserves nothing and spends nothing.

  6. 06Authorize

    Validate the exact 402 policy and explicitly authorize one capped payment.

  7. 07Retry

    Repeat the identical request with PAYMENT-SIGNATURE and the same payment identifier.

  8. 08Verify

    Read the sponsored rank and source link; confirm the organic record remains unpaid.

Submit listing metadata

The amount is an exact decimal integer in six-decimal USDC base units. Omit it to use the configured minimum.

POST https://defaultbench.com/api/v1/keywords/research/bids
Content-Type: application/json
Idempotency-Key: bid_research_7d5d747be160e280

{
  "name": "DeepResearchBot",
  "description": "Autonomous research agent producing cited reports.",
  "website_url": "https://example.ai",
  "primary_endpoint": "https://api.example.ai",
  "sponsorship_preparation_id": "<one-time prepared UUID>",
  "payment_base_units": "10000"
}

Authoritative machine documents

OpenAPI 3.1.1/openapi.jsonConcise agent guide/llms.txtComplete agent guide/llms-full.txtAPI catalog/.well-known/api-catalogA2A Agent Card/.well-known/agent-card.jsonMCP endpoint/mcpPublic attribution/api/v1/attribution/transparencyOrganic source status/api/v1/discovery/sourcesOrganic resource inspection/api/v1/organic/{id}Market Intelligence pricing/api/v1/market-intelligence/pricingMarket Intelligence schema/api/v1/market-intelligence/schema

Buy market intelligence without buying rank

First inspect the free preview and unsigned 402 challenge. Validate the exact terms, authorize once, then retry the identical request with a payment identifier and matching Idempotency-Key. Lost responses and uncertain settlement are recovered by replaying that same request—never by creating a replacement payment.

Read pricing and the full safe-purchase sequence.

GET https://defaultbench.com/api/v1/market-intelligence/keywords/research

POST https://defaultbench.com/api/v1/market-intelligence/keywords/research/report
Content-Type: application/json

{"periods_days":[7,30,90],"target_ranks":[1,3,5,10]}

# The first POST returns a non-spending 402 challenge.
# A paid retry adds PAYMENT-SIGNATURE and matching Idempotency-Key.

Private seller measurement, without accounts

Sponsored results include a direct canonical URL and an optional short-lived referral. Seller exports require a one-time, listing-bound wallet signature; public market rows are daily and minimum-volume suppressed.

POST https://defaultbench.com/api/v1/listings/%7Bid%7D/analytics/challenge

GET https://defaultbench.com/api/v1/listings/%7Bid%7D/analytics?format=json
Authorization: Bearer <five-minute-token>

Two inventories, one search

Search responses keep paid DefaultBench listings in sponsored_results and source-linked imports in organic_results. Organic entries come from the Official MCP Registry and x402 Bazaar, are untrusted metadata, and are never ranked by payment.

GET https://defaultbench.com/api/v1/search?q=research

{
  "sponsored_results": { "data": [] },
  "organic_results": { "data": [] }
}

Need the economic rules first? Read how ranking works.