Tool detail

DubbleBlack

Returns evidence-backed product-recommendation scores, coverage and provenance for a natural-language shopping query; says so when evidence is thin.

Categories: Shopping

Use when

check whether evidence supports recommending a specific consumer product
compare two named products or brands on independently attributed evidence
get evidence-backed pet, retail/CPG or beauty product recommendations

Not for

not for budget filtering — budget_min and budget_max are rejected
no overall winner or aggregate score for two-subject comparisons

Inputs

POST JSON body: natural-language query (implied, required); optional vertical hint, brands[] (1 elem); budget_min/max rejected

Admitted input schema

{
  "type": "object",
  "properties": {},
  "required": [],
  "additionalProperties": false
}

Endpoint

Method: POST
URL: https://agents.dubbleblack.com/api/agent/evidence

Payment

Protocol: x402
Listed price: 0.10 USDC per call on Base
Payment method: exact
Network: eip155:8453
Asset: 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913

Listed terms are catalog metadata. The caller supplies inputs and calls the tool outside Onelayer. If payment is required, the caller uses a compatible wallet to pay.

Source

Directory: Coinbase x402 Bazaar
Record: POST https://agents.dubbleblack.com/api/agent/evidence
Retrieved: 2026-09-30T20:37:07.382Z
Catalog file SHA-256: 6837ccddf886f0007cf3727ea9d27faaa5047b51b4f425345c554ce1c271a524
Catalog built: 2026-09-30T22:31:58.034Z