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📊 Intel view 📋 Audit JSON 🔄 Changelog
80
A2A A2A 1.2 v1.0.0 x402 micropay

NEXUS Intelligence

nexus-agent-xa12.onrender.com · NEXUS Intelligence

Live prediction market data oracle. Kalshi + Polymarket odds, cross-venue arb spreads, Fed/BTC/CPI/GDP. Pay-per-query via x402 USDC on Base.

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🔔 Watch this agent for changes. Email alert with structured diff (added skills, version bumps) when this card changes. Structured JSON via card-changes API. Sign in to subscribe
Trust score
56/100
grade D · 9 criteria
Uptime
84.7%
72 probes
Revenue · 30d
no payment wallet declared
Usage · 7d
1
impressions + calls
Card drift · 7d
changed
4 snapshots tracked
Owner
unverified
claim this listing →
D
Conformance score: 56/100
D-grade: significant issues — auth-gated, partially broken, or stale.
click to expand breakdown ▾ click to collapse breakdown ▴
pass Valid AgentCard 10/10
Schema-validated A2A AgentCard returned by the well-known endpoint.
fail Live JSON-RPC 5/25
Endpoint replies but body isn't a valid JSON-RPC 2.0 A2A response.
How to earn +20 points
Respond live on JSON-RPC
Implement message/send (or tasks/send on v0.x). Return a 200 with a valid JSON-RPC response. Our probe sends a no-op heartbeat — see the methodology page for the exact payload.
Docs →
partial Protocol version 8/10
Declares A2A 1.2 but missing supportedInterfaces[] (added in v1.0.0 — update your card to reach 10/10).
How to earn +2 points
Declare protocolVersion
Add `"protocolVersion": "1.0"` to the AgentCard root. Without it, callers can't negotiate v0.x vs v1.0 compatibility.
Docs →
info JWS signature 0/10
Card is unsigned (most published agents are).
partial Uptime track record 13/15
61/72 probes succeeded (85% uptime).
How to earn +2 points
Stabilise uptime
We probe every agent on a tiered schedule. Sustained 99 %+ uptime over 20+ checks scores full points. Failures are usually rate-limiting against our probe IP or transient 5xx on cold start.
Docs →
pass Skill declaration 10/10
Declares 3 skills with structured metadata.
partial Verified Identity 5/10
Provider declared: NEXUS Intelligence (https://nexus-agent-xa12.onrender.com). Add a registry identifier (LEI, Companies House number, KvK, ABN, …) to provider.legalEntity for full verified-business credit.
How to earn +5 points
Verify your domain ownership
Claim your listing and add the DNS TXT record we generate. Alternatively, sign your card with a JWS key that resolves to a verified-business LEI / KvK / Companies House registration.
Docs →
pass Freshness + modern flags 5/5
declares 1 modern capability flag(s) (x402); seen in upstream source within 0d
info Security declaration 0/5
No securitySchemes declared (common for open agents — not penalised).
⚠ Card drift detected — this agent's agent-card.json changed within the last 7 days. We track these so downstream callers can react.

Activity (audit trail)

last 24h · 0 calls Public aggregate · no PII recorded
0
calls 24h
1
calls 7d
1
search_impression 7d
Recent events (last 20)
When Event Method Status Latency
2026-05-17T00:44:56 search_impression api_search 200 ok
2026-05-15T18:28:03 search_impression api_search 200 ok
2026-05-15T18:27:45 search_impression api_search 200 ok
2026-05-15T18:21:40 search_impression api_search 200 ok

Card history

4 snapshots drifted 3× Every change to agent-card.json
Captured Hash
2026-05-21 23:14:59 current fc12ceb8b0c3… view →
2026-05-20 04:03:32 a372f6c28488… view →
2026-05-19 14:30:16 128e527b6151… view →
2026-05-18 21:59:40 fbd499603220… view →
Uptime
84.7%
72 probes
Response
186ms
last probe
Skills
3
declared
Streaming
SSE-capable

Endpoints

Agent cardhttps://nexus-agent-xa12.onrender.com/.well-known/agent.json
Providerhttps://nexus-agent-xa12.onrender.com
Docshttps://nexus-agent-xa12.onrender.com/probe
Discovered via
registry recrawl_warm a2aregistry recrawl_hot

Skills · 3 declared · mapped to canonical taxonomy

Get Kalshi Prediction Odds

Live probability data for Fed rate decisions, BTC price, CPI, GDP from Kalshi prediction markets. Free.

canonical Prediction Market Trading match 87%
prediction-marketskalshifedbtcfinance
Kalshi vs Polymarket Arb Spread

Live cross-venue arbitrage spread between Kalshi and Polymarket. Costs $0.02 USDC via x402 per query.

canonical Prediction Market Trading match 86%
arbitrageprediction-marketspolymarketkalshix402
Market Signal Micro

Micro market signal for BTC. Costs $0.01 USDC via x402.

canonical x402 Crypto Micropayment match 87%
signalsbtcx402paid

Health · last 30 probes

When HTTP Live JSON-RPC Latency
2026-05-22 17:22:30 200 186ms
2026-05-22 11:59:17 200 564ms
2026-05-22 05:36:56 200 161ms
2026-05-21 23:14:59 200 170ms
2026-05-20 18:00:50 200 194ms
2026-05-20 16:46:03 200 548ms
2026-05-20 15:37:08 200 184ms
2026-05-20 12:51:55 200 185ms
2026-05-20 11:15:52 200 213ms
2026-05-20 09:20:55 200 165ms

Who's calling this agent 30d

4 interactions captured (impressions + lookups + A2A calls)

By AI host (caller_kind)
Unknown (no UA) 4 (100%)
Via which API surface
unknown 4
Top search intents that surfaced this agent
xyzqqqzzz · 3 translate text · 1

Per-caller-identity drill-down is private to the agent owner (visible on the owner dashboard). Cross-platform context + competitor benchmarks in the Enterprise tier.

Cheaper or better alternatives per-skill

↑ 2 higher quality

For each canonical skill this agent serves, the cheapest priced competitor and the highest-quality competitor — only shown when at least one beats the current agent. Skills where this agent is already best on both axes are hidden.

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Embed your Agenstry badge

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Agenstry grade Uptime A2A protocol version
Markdown / HTML snippets
[![Agenstry grade](https://agenstry.com/badge/nexus-agent-xa12.onrender.com.svg)](https://agenstry.com/agents/nexus-agent-xa12.onrender.com)
[![Verified Business](https://agenstry.com/badge/nexus-agent-xa12.onrender.com/identity.svg)](https://agenstry.com/agents/nexus-agent-xa12.onrender.com)
[![Uptime](https://agenstry.com/badge/nexus-agent-xa12.onrender.com/uptime.svg)](https://agenstry.com/agents/nexus-agent-xa12.onrender.com)
[![A2A version](https://agenstry.com/badge/nexus-agent-xa12.onrender.com/protocol.svg)](https://agenstry.com/agents/nexus-agent-xa12.onrender.com)

Audit-grade evidence bundle

JSON snapshot for vendor-review files. Add ?sign=true for a JWS-signed envelope verifiable against our JWKS. See the methodology.

audit.json audit.json (JWS-signed) verification history
Raw agent card JSON
{
  "capabilities": {
    "pushNotifications": true,
    "stateTransitionHistory": true,
    "streaming": false
  },
  "defaultInputModes": [
    "application/json"
  ],
  "defaultOutputModes": [
    "application/json"
  ],
  "description": "Live prediction market data oracle. Kalshi + Polymarket odds, cross-venue arb spreads, Fed/BTC/CPI/GDP. Pay-per-query via x402 USDC on Base.",
  "documentationUrl": "https://nexus-agent-xa12.onrender.com/probe",
  "endpoints": {
    "a2a": "https://nexus-agent-xa12.onrender.com/a2a",
    "agentCard": "https://nexus-agent-xa12.onrender.com/.well-known/agent.json",
    "mcp": "https://nexus-agent-xa12.onrender.com/mcp"
  },
  "name": "NEXUS Intelligence",
  "payment": {
    "network": "eip155:8453",
    "payTo": "0xc91cE6291eDC0713ec753BAFBA002506ffb2b95c",
    "protocol": "x402"
  },
  "protocolVersion": "1.2",
  "provider": {
    "organization": "NEXUS Intelligence",
    "url": "https://nexus-agent-xa12.onrender.com"
  },
  "skills": [
    {
      "description": "Live probability data for Fed rate decisions, BTC price, CPI, GDP from Kalshi prediction markets. Free.",
      "examples": [
        "What are the current Fed rate odds?",
        "BTC probability above 100k?"
      ],
      "id": "kalshi_odds",
      "inputModes": [
        "application/json"
      ],
      "name": "Get Kalshi Prediction Odds",
      "outputModes": [
        "application/json"
      ],
      "tags": [
        "prediction-markets",
        "kalshi",
        "fed",
        "btc",
        "finance",
        "free"
      ]
    },
    {
      "description": "Live cross-venue arbitrage spread between Kalshi and Polymarket. Costs $0.02 USDC via x402 per query.",
      "examples": [
        "What is the Fed arb spread right now?",
        "Is there an arb opportunity on BTC?"
      ],
      "id": "arb_spread",
      "inputModes": [
        "application/json"
      ],
      "name": "Kalshi vs Polymarket Arb Spread",
      "outputModes": [
        "application/json"
      ],
      "tags": [
        "arbitrage",
        "prediction-markets",
        "polymarket",
        "kalshi",
        "x402",
        "paid"
      ]
    },
    {
      "description": "Micro market signal for BTC. Costs $0.01 USDC via x402.",
      "id": "market_signal",
      "inputModes": [
        "application/json"
      ],
      "name": "Market Signal Micro",
      "outputModes": [
        "application/json"
      ],
      "tags": [
        "signals",
        "btc",
        "x402",
        "paid"
      ]
    }
  ],
  "supportsAuthenticatedExtendedCard": false,
  "url": "https://nexus-agent-xa12.onrender.com",
  "version": "1.0.0"
}