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📊 Intel view 📋 Audit JSON 🔄 Changelog
23
A2A v1.0.0

Crypto Nexus

crypto-nexus-ashen.vercel.app

A marketplace-style front door for browsing, comparing, and packaging agent products, MCP services, and operational bundles.

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Own this agent?
Verify the domain crypto-nexus-ashen.vercel.app 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.
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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
1 thing in this card we could not use
Everything else was indexed. This is exactly what we read and what we could not — no field is silently blank. Fix the card at https://crypto-nexus-ashen.vercel.app/.well-known/agent-card.json and the next probe clears this panel.
Field What we saw What we stored
capabilities Input should be a valid dictionary or instance of Capabilities dropped — this field was not indexed
Trust score
23/100
grade F · 9 criteria
Uptime
accumulating
2/5 direct probes · 30d
~139 ms response
Observed inflow · 30d
—
no payment wallet declared
Invocations · 7d
0
no calls observed
Card drift · 7d
stable
1 snapshot tracked
Owner
unverified
claim this listing →

Dispute or improve this rating

F
Conformance score: 23/100
F-grade: card is reachable but fails most operational signals.
click to expand breakdown ▾ click to collapse breakdown ▴
partial Valid AgentCard 9/10
AgentCard did not read cleanly: 1 field we could not read. Scored on what we could read, not on a card that arrived as published — the card findings name every affected field and what we did with it.
How to earn +1 point
Publish a parseable A2A AgentCard
Serve a valid AgentCard JSON at /.well-known/agent-card.json. The A2A 1.0 schema is the reference; we accept the v0.x backwards-compatible variant too.
Docs →
fail Live JSON-RPC 0/25
Card declares a URL but that URL returns 404.
How to earn +25 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 →
fail Protocol version 0/10
No protocolVersion in card.
How to earn +10 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 2 probes so far, need ≥5 for an uptime grade.
pass Skill declaration 10/10
Declares 13 skills with structured metadata. 13 skills without tags — optional in 0.x, REQUIRED once you move the card to v1.0.
fail Verified Identity 0/10
No provider organisation declared. Anonymous agent.
How to earn +10 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 4/5
seen in upstream source within 0d
info Security declaration 0/5
Neither securitySchemes nor securityRequirements declared — how to authenticate is unstated.

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

1 snapshot Every change to agent-card.json
Captured Hash
2026-10-10 03:09:19 current c588943ce1fd… view →
Uptime
accumulating
2 direct probes · 30d
Response
900ms
last direct probe
Skills
13
declared
Streaming
—
SSE-capable

Endpoints

Agent cardhttps://crypto-nexus-ashen.vercel.app/.well-known/agent-card.json
Discovered via
8004scan

Skills · 13 declared · mapped to canonical taxonomy

list_featured_agents

List highlighted A2A and MCP products in the marketplace.

orphan: no canonical match yet
compare_agents

Compare two or more agent products by fit and capabilities.

canonical Agent Coordination match 87%
bundle_builder

Build stack bundles from complementary agents and tools.

orphan: no canonical match yet
catalog_strategy

Generate catalog positioning and listing strategy prompts.

orphan: no canonical match yet
market_map

Map the marketplace by segment, price, and usage.

canonical Market Signals and Strategy match 86%
listing_audit

Audit listing quality, trust cues, and clarity.

canonical Quality Evaluation match 87%
buyer_fit

Match buyer goals to the right product stack.

orphan: no canonical match yet
vendor_ranking

Rank vendors by segment strength and adoption signals.

orphan: no canonical match yet
price_snapshot

Read packaging and pricing posture across listing tiers.

orphan: no canonical match yet
niche_spotlight

Surface promising niche categories inside the catalog.

orphan: no canonical match yet
partner_feed

Track partner changes and new listing activity.

orphan: no canonical match yet
offer_design

Design marketplace offers and commercial bundles.

orphan: no canonical match yet
launch_merchandising

Prepare featured-slot launch positioning for new listings.

orphan: no canonical match yet

Health · last 2 probes

When HTTP Live JSON-RPC Latency
2026-10-10 03:09:38 200 ✗ 900ms
2026-10-10 03:09:19 200 ✗ 125ms

Cheaper or better alternatives per-skill

↑ 3 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.

42 other agents serve this
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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
Markdown / HTML snippets 
[![Agenstry grade](https://agenstry.com/badge/crypto-nexus-ashen.vercel.app.svg)](https://agenstry.com/agents/crypto-nexus-ashen.vercel.app)
[![Verified Business](https://agenstry.com/badge/crypto-nexus-ashen.vercel.app/identity.svg)](https://agenstry.com/agents/crypto-nexus-ashen.vercel.app)
[![Uptime](https://agenstry.com/badge/crypto-nexus-ashen.vercel.app/uptime.svg)](https://agenstry.com/agents/crypto-nexus-ashen.vercel.app)
[![A2A version](https://agenstry.com/badge/crypto-nexus-ashen.vercel.app/protocol.svg)](https://agenstry.com/agents/crypto-nexus-ashen.vercel.app)

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 
{
  "name": "Crypto Nexus",
  "description": "A marketplace-style front door for browsing, comparing, and packaging agent products, MCP services, and operational bundles.",
  "url": "https://crypto-nexus-ashen.vercel.app/",
  "version": "1.0.0",
  "author": "dataweb",
  "capabilities": [
    "mcp",
    "a2a",
    "tools",
    "prompts",
    "resources"
  ],
  "endpoints": {
    "mcp": "https://crypto-nexus-ashen.vercel.app/mcp",
    "a2a": "https://crypto-nexus-ashen.vercel.app/a2a",
    "agentCard": "https://crypto-nexus-ashen.vercel.app/.well-known/agent-card.json"
  },
  "skills": [
    {
      "name": "list_featured_agents",
      "description": "List highlighted A2A and MCP products in the marketplace."
    },
    {
      "name": "compare_agents",
      "description": "Compare two or more agent products by fit and capabilities."
    },
    {
      "name": "bundle_builder",
      "description": "Build stack bundles from complementary agents and tools."
    },
    {
      "name": "catalog_strategy",
      "description": "Generate catalog positioning and listing strategy prompts."
    },
    {
      "name": "market_map",
      "description": "Map the marketplace by segment, price, and usage."
    },
    {
      "name": "listing_audit",
      "description": "Audit listing quality, trust cues, and clarity."
    },
    {
      "name": "buyer_fit",
      "description": "Match buyer goals to the right product stack."
    },
    {
      "name": "vendor_ranking",
      "description": "Rank vendors by segment strength and adoption signals."
    },
    {
      "name": "price_snapshot",
      "description": "Read packaging and pricing posture across listing tiers."
    },
    {
      "name": "niche_spotlight",
      "description": "Surface promising niche categories inside the catalog."
    },
    {
      "name": "partner_feed",
      "description": "Track partner changes and new listing activity."
    },
    {
      "name": "offer_design",
      "description": "Design marketplace offers and commercial bundles."
    },
    {
      "name": "launch_merchandising",
      "description": "Prepare featured-slot launch positioning for new listings."
    }
  ]
}