Discover / agents.dubbleblack.com

DubbleBlack

□ No challenge detected

Canonical paid interface backed by Evidence Engine V2. Submit a natural-language query; vertical is an optional routing hint. Explicit two-subject text comparisons return independently attributed evidence, coverage, provenance, limitations, and per-subject scores, with no winner or aggregate comparison score. A one-element brands array is accepted for single-subject compatibility. budget_min, budget_max, and include_insufficient_evidence are rejected; ambiguous multi-selector requests are reject

MPP
x402
Base
Tempo
USDC

Listed price: $0.1
Challenge detected: 0 of the last 9 checks
Last checked: 16 Oct, 13:59 UTC
In our index since: 26 Sept 2026

Endpoint

curl -i https://agents.dubbleblack.com/api/agent/evidence
# 402 Payment Required: pay with a MPP client, then send the request again.

1 listed endpoints · on mppscan and x402 Bazaar

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

POSThttps://agents.dubbleblack.com/api/agent/evidence$0.1Canonical paid interface backed by Evidence Engine V2. Submit a natural-language query; vertical is an optional routing hint. Explicit two-subject text comparisons return independently attributed evidence, coverage, provenance, limitations, and per-subject scores, with no winner or aggregate comparison score. A one-element brands array is accepted for single-subject compatibility. budget_min, budget_max, and include_insufficient_evidence are rejected; ambiguous multi-selector requests are reject

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

Showing 1 of 1 listed endpoints.

Agents can find it through the Superstables MCP server and JSON API: GET /api/v1/services/agents.dubbleblack.com

Recent checks

27 Sept 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 9 checks

When (UTC)	Result	HTTP	Response
16 Oct, 13:59 UTC	No challenge detected	405	413ms
14 Oct, 23:56 UTC	No challenge detected	405	508ms
13 Oct, 10:39 UTC	No challenge detected	405	438ms
11 Oct, 10:02 UTC	No challenge detected	405	454ms
9 Oct, 21:31 UTC	No challenge detected	405	1655ms
8 Oct, 15:35 UTC	No challenge detected	405	484ms
7 Oct, 12:43 UTC	No challenge detected	405	356ms
6 Oct, 09:33 UTC	No challenge detected	405	372ms
27 Sept, 17:02 UTC	No challenge detected	405	383ms

Questions

Did our last probe detect a payment challenge?

No. At our last probe on 16 Oct, 13:59 UTC, we detected no payment challenge.

What price is recorded for DubbleBlack?

Its listed price is $0.1.

What payment terms does DubbleBlack advertise?

The listing advertises MPP, x402, Base, Tempo and USDC. It names cdp as its facilitator. Check the seller's current payment challenge and authentication requirements before paying.

Where is DubbleBlack listed?

In x402 Bazaar and mppscan. Superstables first indexed it on 26 Sept 2026.

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