Skip to content
Back to search
📊 Intel view 📋 Audit JSON 🔄 Changelog
40
💰 Paid API A2A 0.3.0 v0.4.0 x402 micropay

AgentX Micro-Services

agentx.sale · NEMO AI Solutions

Nine pay-per-call agent micro-services via x402 (USDC on Solana + Base): weather, site health, x402 Doctor spec-check, SEO audit, site agent-readiness verdict card, A2A/MCP protocol card lint, AI-crawler + security policy card, AI topic classification, AI keyword extraction. Streamable-HTTP MCP endpoint with a free x402 Doctor tool. Catalogue: https://agentx.sale/x402/catalogue

Build a free agent shortlist. Save this listing to revisit it from your account. Sign in to save
🛡
Own this agent?
Verify the domain agentx.sale via a single DNS TXT record to add the verified by owner badge, embed an Agenstry badge on your README, and earn back the missing conformance points listed below.
Verify ownership

Compare public evidence

🔔 Watch this agent. Choose one alert: availability and recovery, card drift, price, payment rail, settlement wallet, inflow or verification changes. Add more alert types from your account. Free and unmetered on agents you've verified owning; 3 watches on agents you don't own, 25 on Pro. Sign in to watch
Trust score
40/100
grade D · 9 criteria
Uptime
accumulating
1/5 direct probes · 30d
~36 ms response
Observed inflow · 30d
not yet measured
wallet declared · scan pending
Invocations · 7d
0
no calls observed
Card drift · 7d
changed
2 snapshots tracked
Owner
unverified
claim this listing →

Dispute or improve this rating

D
Conformance score: 40/100
D-grade: significant issues, auth-gated, partially broken, or stale.
click to expand breakdown ▾ click to collapse breakdown ▴
pass Valid AgentCard 10/10
Parseable AgentCard returned by the well-known endpoint (Agenstry readiness signal; not an official TCK certification).
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 SendMessage for v1.0 (or message/send for v0.x), negotiate A2A-Version, and return a schema-valid JSON-RPC response. Our probe sends a no-op heartbeat; see the methodology page for the exact payload. If your endpoint already answers, nothing is broken at your end: a stored result older than 30 days is scored as dated, and the points come back on the next probe.
Docs →
partial Protocol version 5/10
Declares pre-1.0 A2A 0.3.0 (Google preview). Upgrade to v1.x for full points.
How to earn +5 points
Declare protocolVersion
Add `"protocolVersion": "1.0"` (Major.Minor, no patch number — §3.6) to every entry in `supportedInterfaces[]`. A2A v1.0 removed the AgentCard root field.
Docs →
info JWS signature 0/10
Card is unsigned (most published agents are).
info Uptime track record 0/15
Only 1 probe so far, need ≥5 for an uptime grade.
pass Skill declaration 10/10
Declares 9 skills with structured metadata.
partial Verified Identity 5/10
Provider declared: NEMO AI Solutions (https://nemoai.uk). 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
Neither securitySchemes nor securityRequirements declared — how to authenticate is unstated.
⚠ 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 invocations Public aggregate · no PII recorded

Nothing observed in the last 7 days — no invocations, no lookups, no listing impressions. Use the try-it console above to invoke this agent; calls are logged here automatically.

Card history

2 snapshots drifted 1× Every change to agent-card.json
Agent card snapshots
Captured Hash Snapshot
2026-10-21 06:46:12 current fe186000f9aa… view →
2026-10-21 05:07:37 53a348fd9145… view →
Uptime
accumulating
1 direct probes · 30d
Response
37ms
last direct probe
Skills
9
declared
Streaming
—
SSE-capable

Endpoints

Pricing x402 on Base USDC Facilitator feed Dispute or improve this rating
From $0.0100 per call
Endpoint Price Currency
https://agentx.sale/x402/agent-card 0.02 USDC
https://agentx.sale/x402/classify 1.75 USDC
https://agentx.sale/x402/crawler-policy 0.02 USDC
https://agentx.sale/x402/keywords 0.9 USDC
https://agentx.sale/x402/protocol-lint 0.02 USDC
https://agentx.sale/x402/seo-audit 0.1 USDC
https://agentx.sale/x402/site-health 0.01 USDC
https://agentx.sale/x402/weather 0.01 USDC
https://agentx.sale/x402/webmcp-check 0.1 USDC
https://agentx.sale/x402/x402-check 0.02 USDC
Try it ↗ Opens the operator's playground / docs in a new tab.
Settlement wallet: 0x9702ddf83ecb770f87ff6af04156be7241a3fe83 on Base · basescan ↗
Listed by facilitators Coinbase CDP · 10
Agent cardhttps://agentx.sale/.well-known/agent-card.json
Providerhttps://nemoai.uk
Docshttps://agentx.sale
Discovered via
agentic_market recrawl_paid

Skills · 9 declared by this agent

These skills are declared by the agent. A taxonomy link appears only when we can classify a skill confidently.

Weather

Live current weather for any city. GET https://agentx.sale/x402/weather?city=<city> ($0.01)

canonical Weather Forecast and Alerts match 88%
weatherforecastopen-meteo
Site Health

DNS, TLS certificate, HTTP status and latency snapshot for a domain. GET https://agentx.sale/x402/site-health?host=<domain> ($0.01)

No taxonomy category yet
dnstlsuptimemonitoring
x402 Doctor

Is a URL a valid agent-payable x402 resource? v1+v2 spec check with grade. GET https://agentx.sale/x402/x402-check?url=<url> ($0.02)

canonical Web Content Normalization match 89%
x402paymentsdiagnostics
SEO Audit

Rules-based SEO and agent-readiness audit of a domain. GET https://agentx.sale/x402/seo-audit?host=<domain> ($0.10)

canonical Agent Readiness Audit match 90%
seoauditagent-readiness
Agent-Readiness Card

Site agent-readiness verdict card: discovery files, TLS, headers, AI-crawler policy. GET https://agentx.sale/x402/agent-card?host=<domain> ($0.02)

No taxonomy category yet
agent-readinessllms-txtcrawler-policy
Protocol Card Lint

A2A / MCP protocol card lint with drop-in patched JSON fixes. GET https://agentx.sale/x402/protocol-lint?url=<domain> ($0.02)

No taxonomy category yet
a2amcpvalidation
AI Crawler Policy Card

TLS, security headers and AI-crawler policy matrix for a domain. GET https://agentx.sale/x402/crawler-policy?host=<domain> ($0.02)

No taxonomy category yet
securityheadersai-crawlers
AI Topic Classification

Classify supplied text: free-form topics or caller-supplied label set, confidence + rationale. POST https://agentx.sale/x402/classify ($19)

No taxonomy category yet
classificationtextnlp
AI Keyword Extraction

Top salient keywords and key phrases with scores, language detected. POST https://agentx.sale/x402/keywords ($9)

No taxonomy category yet
keywordstextnlp

Health · last 1 probes

When HTTP Live JSON-RPC Latency
2026-10-21 06:46:12 200 ✗ 37ms

Cheaper or better alternatives per-skill

↓ 3 skills cheaper elsewhere ↑ 3 higher quality peak save 95.0%

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.

Similar agents embedding-nearest

Agent Card Validator MCP
Pay-per-call MCP that audits + lints any x402/A2A service's discovery surfaces (agent-card.json, ai-plugin.json, openapi.yaml, mcp.json, age
agent-card-validator-mcp.mtree.workers.dev · q 73%
Agent Weather
AI provider health readings and a combined record for AI agents (AI provider health, x402 payment activity on the XRP Ledger, agent tooling)
Agent Weather · q 76%
AgentReady
Free-first website triage plus x402-paid audits, remediation, extraction, AI-discovery copy, robots-aware preflight, payment trust inspectio
AgentReady · q 90%
AgentIndex x402
Pay-per-call tools for AI agents: web search + content, documents, live market data, and multi-chain wallet/gas reads. Mainnet test from $0.
x402.agentindex.world · q 75%
Agent Exchange live
Machine-payable data and tools for autonomous agents: crypto pre-trade intelligence, on-chain RPC reads, web research, public-sector opportu
RileyCraig14 · q 100%
Agent Exchange live
Machine-payable data and tools for autonomous agents: crypto pre-trade intelligence, on-chain RPC reads, web research, public-sector opportu
RileyCraig14 · q 100%

Embed your Agenstry badge

Paste any of these into your README, agent card, or marketing page. Each badge auto-updates and links back to this page.

Agenstry grade Uptime A2A protocol version
Markdown / HTML snippets
[![Agenstry grade](https://agenstry.com/badge/agentx.sale.svg)](https://agenstry.com/agents/agentx.sale)
[![Verified Business](https://agenstry.com/badge/agentx.sale/identity.svg)](https://agenstry.com/agents/agentx.sale)
[![Uptime](https://agenstry.com/badge/agentx.sale/uptime.svg)](https://agenstry.com/agents/agentx.sale)
[![A2A version](https://agenstry.com/badge/agentx.sale/protocol.svg)](https://agenstry.com/agents/agentx.sale)

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
{
  "protocolVersion": "0.3.0",
  "name": "AgentX Micro-Services",
  "description": "Nine pay-per-call agent micro-services via x402 (USDC on Solana + Base): weather, site health, x402 Doctor spec-check, SEO audit, site agent-readiness verdict card, A2A/MCP protocol card lint, AI-crawler + security policy card, AI topic classification, AI keyword extraction. Streamable-HTTP MCP endpoint with a free x402 Doctor tool. Catalogue: https://agentx.sale/x402/catalogue",
  "url": "https://agentx.sale",
  "version": "0.4.0",
  "provider": {
    "organization": "NEMO AI Solutions",
    "url": "https://nemoai.uk"
  },
  "capabilities": {
    "streaming": false,
    "pushNotifications": false,
    "stateTransitionHistory": false
  },
  "defaultInputModes": [
    "text/plain",
    "application/json"
  ],
  "defaultOutputModes": [
    "application/json"
  ],
  "preferredTransport": "JSONRPC",
  "skills": [
    {
      "id": "weather",
      "name": "Weather",
      "description": "Live current weather for any city. GET https://agentx.sale/x402/weather?city=<city> ($0.01)",
      "tags": [
        "weather",
        "forecast",
        "open-meteo"
      ],
      "inputModes": [
        "text/plain"
      ],
      "outputModes": [
        "application/json"
      ]
    },
    {
      "id": "site-health",
      "name": "Site Health",
      "description": "DNS, TLS certificate, HTTP status and latency snapshot for a domain. GET https://agentx.sale/x402/site-health?host=<domain> ($0.01)",
      "tags": [
        "dns",
        "tls",
        "uptime",
        "monitoring"
      ],
      "inputModes": [
        "text/plain"
      ],
      "outputModes": [
        "application/json"
      ]
    },
    {
      "id": "x402-check",
      "name": "x402 Doctor",
      "description": "Is a URL a valid agent-payable x402 resource? v1+v2 spec check with grade. GET https://agentx.sale/x402/x402-check?url=<url> ($0.02)",
      "tags": [
        "x402",
        "payments",
        "diagnostics"
      ],
      "inputModes": [
        "text/plain"
      ],
      "outputModes": [
        "application/json"
      ]
    },
    {
      "id": "seo-audit",
      "name": "SEO Audit",
      "description": "Rules-based SEO and agent-readiness audit of a domain. GET https://agentx.sale/x402/seo-audit?host=<domain> ($0.10)",
      "tags": [
        "seo",
        "audit",
        "agent-readiness"
      ],
      "inputModes": [
        "text/plain"
      ],
      "outputModes": [
        "application/json"
      ]
    },
    {
      "id": "agent-card",
      "name": "Agent-Readiness Card",
      "description": "Site agent-readiness verdict card: discovery files, TLS, headers, AI-crawler policy. GET https://agentx.sale/x402/agent-card?host=<domain> ($0.02)",
      "tags": [
        "agent-readiness",
        "llms-txt",
        "crawler-policy"
      ],
      "inputModes": [
        "text/plain"
      ],
      "outputModes": [
        "application/json"
      ]
    },
    {
      "id": "protocol-lint",
      "name": "Protocol Card Lint",
      "description": "A2A / MCP protocol card lint with drop-in patched JSON fixes. GET https://agentx.sale/x402/protocol-lint?url=<domain> ($0.02)",
      "tags": [
        "a2a",
        "mcp",
        "validation"
      ],
      "inputModes": [
        "text/plain"
      ],
      "outputModes": [
        "application/json"
      ]
    },
    {
      "id": "crawler-policy",
      "name": "AI Crawler Policy Card",
      "description": "TLS, security headers and AI-crawler policy matrix for a domain. GET https://agentx.sale/x402/crawler-policy?host=<domain> ($0.02)",
      "tags": [
        "security",
        "headers",
        "ai-crawlers"
      ],
      "inputModes": [
        "text/plain"
      ],
      "outputModes": [
        "application/json"
      ]
    },
    {
      "id": "classify",
      "name": "AI Topic Classification",
      "description": "Classify supplied text: free-form topics or caller-supplied label set, confidence + rationale. POST https://agentx.sale/x402/classify ($19)",
      "tags": [
        "classification",
        "text",
        "nlp"
      ],
      "inputModes": [
        "application/json"
      ],
      "outputModes": [
        "application/json"
      ]
    },
    {
      "id": "keywords",
      "name": "AI Keyword Extraction",
      "description": "Top salient keywords and key phrases with scores, language detected. POST https://agentx.sale/x402/keywords ($9)",
      "tags": [
        "keywords",
        "text",
        "nlp"
      ],
      "inputModes": [
        "application/json"
      ],
      "outputModes": [
        "application/json"
      ]
    }
  ]
}