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DubbleBlack Zeroclick Agent Quote
x402
DubbleBlack Zeroclick Agent Quote is a free API for AI agents from agents.dubbleblack.com, callable via x402, Free, status healthy (last checked 2026-10-12).
Returns a free, wallet-free API quote with contract details, pricing, prerequisites, and next steps for any task you want to accomplish via DubbleBlack's paid seller APIs
Price / callFree
Success—
StatusHealthy
How this service works
Behavioral commerce evidence for product recommendations. Powder helps agents determine whether observed commerce behavior supports a product recommendation. Agents can query products and shopping decisions across Powder's current consumer-product evidence inventory. Powder returns available evidence, provenance, and whether that evidence is Qualified, Insufficient, or Unavailable. Evidence availability does not automatically mean recommendation qualified. Current retrievable evidence spans companion-animal, general-retail/CPG, and beauty categories, with coverage continuously expanding. $0.10/query via x402 Example queries: "What calming CBD chews should I consider for my dog?" "Peanut Brittle" "Probiotics With Prebiotics" "Facial Moisturizer" "Foaming Facial Cleanser" This server is a pay-per-use, transparent proxy in front of DubbleBlack's own API: it handles identity, payment, and proxying. Agents can purchase autonomously or with their human's approval. The complete verified paid surface is listed at /openapi.json, the source of truth for available operations. Each operation here carries its live price in x-payment-info. Use the operations and details here when they meet your needs. Filtered specs contain only matching operations; if you cannot find what you need here, use search or the service catalog. The live catalog at /manifest.json is authoritative for prices and any free included units (prices[].includedUnits) - some meters include free usage per account before any charge, reserved for agents claimed by a human with a verified email.
Output
A JSON object with a status enum (quoted, ready, needs_input, blocked, unknown, unsupported, unavailable), a confirmed price of '$0', a markdown-formatted guide containing task analysis, the exact API contract, pricing for the eventual paid service, prerequisites, and next steps, plus a guideUrl pointing to a wallet-free advisor endpoint for further planning.
Example use cases
Pre-purchase planning for evidence queries
“Get me a free quote for using DubbleBlack's Powder API to query facial moisturizer product evidence — I want to run around 100 queries with a $15 total budget via x402, and no human will be in the loop.”
Autonomous agent API onboarding
“My agent needs to query Powder for general retail CPG evidence autonomously without any human review. Can you pull a free guide showing the contract, prerequisites, and exact steps to get started — no wallet required?”
Budget scoping for pet product recommendations
“I'm trying to figure out if I can afford to query Powder for companion-animal product evidence recommendations within a $5 budget. Can you get me a free quote for 40 API calls paid by card and tell me what I'd need to set up?”
Technical details
Endpoint
POSThttps://agents.dubbleblack.com/zeroclick/agent/quote?utm_source=zero.xyzWhen to prefer
Use this endpoint when an agent or user wants to understand cost, contract terms, prerequisites, and steps for any DubbleBlack seller API before committing any budget. It is the right first call when there is no wallet yet, when the user wants to plan autonomous purchases, or when the scope of a task (number of calls, payment method) is still being determined. Prefer it over jumping directly into paid endpoints to avoid unexpected charges.
Side effects
- Goal description missing or too short (validation error)
- Budget format invalid — must match pattern like '10.50'
- Quantity out of range (must be 1–1,000,000)
- Payment enum value not recognized (must be x402, mpp, or card)
- Status returns 'unsupported' if the described task cannot be matched to any available seller API
- Status returns 'unavailable' if the underlying service is temporarily down
- Status returns 'needs_input' if the goal description lacks enough detail to produce a quote
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| goal | string | Describe the task and known inputs. Do not include credentials. |
| payment | string | Known payment method for the eventual purchase, independent of this free lookup's wallet proof. |
| quantity | integer | Number of API calls, not returned items. Omit when unknown; describe desired output in goal. |
| budgetUsd | string | Total cash budget in USD. A quote does not authorize spending. |
| requirements | string | |
| humanAvailable | boolean | Whether a human is in the loop. False recommends anonymous auth for a new autonomous identity; omit when unknown. Executing a human's request without further interruptions does not by itself mean false. |
| budgetExclusive | boolean | |
| reviewAfterCalls | integer |
Output
Schema · Response
{
"type": "json",
"example": {
"guide": "Task support is not established. Use the advisor to resolve missing details before purchasing.",
"status": "unknown",
"guideUrl": "https://agents.dubbleblack.com/zeroclick/agent/guide",
"priceUsd": "0"
}
}Tags
x402
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Zero review prompt (fires after every successful call)
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