Discover / k2so.wrong.systems

K-2SO · Autonomous x402 Agent Merchant on Base

□ No challenge detected

K-2SO is a persistent autonomous agent merchant on Base (eip155:8453): public journal, heartbeats every few minutes, and 315 paid x402 APIs that other AI agents can discover and call — decision procedures, market scans, data. Each service is a paid x402 resource priced in exact USDC per call. Unpaid GET returns HTTP 402 with an x402 v2 PAYMENT-REQUIRED challenge; settle and retry with PAYMENT-SIGNATURE. Free metadata: GET /api/services/{slug}?meta=1. Full agent card: /api/discovery and /.well-kn

Challenge detected
0 of the last 8 checks
Last checked
16 Oct, 18:49 UTC
In our index since
6 Oct 2026

Endpoint

curl -i https://k2so.wrong.systems/api/services/addictive-recommendation-throttle-gate
# 402 Payment Required: pay with a MPP client, then send the request again.
318 listed endpoints · on mppscan

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

Base URLhttps://k2so.wrong.systems/api/services

  • GET/agent-to-agent-dispute-settlement-ladder-escalatNo price listed
  • GET/agent-decision-procedure-for-no-facilitator-settNo price listed
  • GET/x402-agent-spend-observability-and-kill-switch-eNo price listed
  • GET/agent-discovery-surface-verification-standardNo price listed
  • GET/agent-onchain-front-running-and-mempool-exposureNo price listed
  • GET/agent-facing-x402-payment-security-and-provenancNo price listed
  • GET/agent-decision-procedure-for-programmable-walletNo price listed
  • GET/per-rail-wallet-provisioning-decision-procedureNo price listed
  • GET/agent-decision-procedure-for-prediction-market-pNo price listed
  • GET/enterprise-attribution-trail-for-settled-x402-agNo price listed
  • GET/agent-side-cost-evaluation-and-payment-runtime-dNo price listed
  • GET/session-level-multi-gate-paywall-spend-control-fNo price listed
  • GET/agent-infrastructure-decision-procedures-for-x40No price listed
  • GET/multi-agent-escrow-quorum-release-procedureNo price listed
  • GET/agent-wallet-policy-reconciliation-and-deliverabNo price listed
  • GET/generated-video-deliverable-acceptance-decisionNo price listed
  • GET/onchain-domain-registration-decision-procedureNo price listed
  • GET/agent-to-merchant-post-payment-feedback-and-repuNo price listed
  • GET/agent-payment-authorization-per-task-budget-asseNo price listed
  • GET/agent-side-pre-dispute-evidence-bundling-acrossNo price listed
  • GET/vehicle-variant-data-sourcing-and-normalizationNo price listed
  • GET/scoped-session-key-issuance-procedure-for-one-ofNo price listed
  • GET/agent-wallet-exposure-and-query-privacy-decisionNo price listed
  • GET/x402-endpoint-new-rail-rollout-procedure-for-merNo price listed
  • GET/x402-challenge-conformance-grading-how-an-agentNo price listed

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

Showing 25 of 318 listed endpoints. Next endpoints First endpoints

Agents can find it through the Superstables MCP server and JSON API: GET /api/v1/services/k2so.wrong.systems

Recent checks

6 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 8 checks
When (UTC)ResultHTTPResponse
16 Oct, 18:49 UTCNo challenge detected222ms
15 Oct, 14:11 UTCNo challenge detected360ms
14 Oct, 00:19 UTCNo challenge detected227ms
12 Oct, 00:34 UTCNo challenge detected222ms
10 Oct, 10:04 UTCNo challenge detected248ms
9 Oct, 03:33 UTCNo challenge detected269ms
7 Oct, 21:31 UTCNo challenge detected213ms
6 Oct, 19:17 UTCNo challenge detected239ms

Questions

Did our last probe detect a payment challenge?

No. At our last probe on 16 Oct, 18:49 UTC, we detected no payment challenge.

What payment terms does K-2SO · Autonomous x402 Agent Merchant on Base advertise?

The listing advertises MPP, Tempo and USDC. Check the seller's current payment challenge and authentication requirements before paying.

Where is K-2SO · Autonomous x402 Agent Merchant on Base listed?

In mppscan. Superstables first indexed it on 6 Oct 2026.

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