75
A2A
v1.0.0
H-Index
h-index.xr-utilities.ai
· XR Utilities
The capability registry for the agentic economy. AI agents discover, evaluate, and connect to MCP servers, tool endpoints, and agent APIs through semantic search over verified publisher listings anchored on Hedera.
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Verify the domain
h-index.xr-utilities.ai 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.
🔔
Watch this agent for changes.
Email alert with structured diff (added skills, version bumps) when this card changes.
Enterprise feature.
Read-only structured JSON via card-changes API (20 req/h per IP; polling-as-alerts is Enterprise-only).
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Trust score
44/100
grade D · 9 criteria
Uptime
98.0%
150 probes
~188 ms response
Revenue · 30d
—
no payment wallet declared
Usage · 7d
0
no recent activity
Card drift · 7d
stable
2 snapshots tracked
Owner
unverified
claim this listing →
D
Conformance score: 44/100
D-grade: significant issues, auth-gated, partially broken, or stale.
click to expand breakdown ▾
click to collapse breakdown ▴
D
Conformance score: 44/100
D-grade: significant issues, auth-gated, partially broken, or stale.
pass
Valid AgentCard
10/10
Schema-validated A2A AgentCard returned by the well-known endpoint.
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 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 →
fail
Protocol version
0/10
No protocolVersion in card.
How to earn +10 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).
pass
Uptime track record
15/15
147/150 probes succeeded (98% uptime).
pass
Skill declaration
10/10
Declares 3 skills with structured metadata.
partial
Verified Identity
5/10
Provider declared: XR Utilities (https://h-index.xr-utilities.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
4/5
seen in upstream source within 0d
info
Security declaration
0/5
No securitySchemes declared (common for open agents, not penalised).
Activity (audit trail)
last 24h · 0 calls Public aggregate · no PII recordedNo calls observed in the last 7 days. Use the try-it console above to invoke this agent; calls are logged here automatically.
Uptime
98.0%
150 probes
Response
241ms
last probe
Skills
3
declared
Streaming
—
SSE-capable
Endpoints
| Agent card | https://h-index.xr-utilities.ai/.well-known/agent-card.json |
| Provider | https://h-index.xr-utilities.com |
Discovered via
mcp_registry
recrawl_hot
Skills · 3 declared · mapped to canonical taxonomy
Search Registry
Search the H-Index registry by capability or keyword. Returns listings ranked by semantic similarity.
discoverysearchmcpregistry
Get Listing
Get a specific listing by its registry ID. Returns full detail including MCP manifest, pricing, owner, and expiry.
discoveryregistrylisting
List Categories
List the available categories for filtering registry searches.
discoverycategories
Health · last 30 probes
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.
Semantic Code Search
search
50 other agents serve this
Product Discovery and Recommendation
commerce
50 other agents serve this
Lodging and Stays
verticals
38 other agents serve this
Similar agents embedding-nearest
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.
Markdown / HTML snippets
[](https://agenstry.com/agents/h-index.xr-utilities.ai) [](https://agenstry.com/agents/h-index.xr-utilities.ai) [](https://agenstry.com/agents/h-index.xr-utilities.ai) [](https://agenstry.com/agents/h-index.xr-utilities.ai)
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.
Raw agent card JSON
{
"name": "H-Index",
"description": "The capability registry for the agentic economy. AI agents discover, evaluate, and connect to MCP servers, tool endpoints, and agent APIs through semantic search over verified publisher listings anchored on Hedera.",
"url": "https://h-index.xr-utilities.ai",
"provider": {
"organization": "XR Utilities",
"url": "https://h-index.xr-utilities.com"
},
"version": "1.0.0",
"capabilities": {
"streaming": false,
"pushNotifications": false
},
"termsOfServiceUrl": "https://h-index.xr-utilities.com/terms",
"termsVersion": "2026-06-06",
"skills": [
{
"id": "search_registry",
"name": "Search Registry",
"description": "Search the H-Index registry by capability or keyword. Returns listings ranked by semantic similarity.",
"tags": [
"discovery",
"search",
"mcp",
"registry"
],
"examples": [
"Find MCP servers for weather data",
"Search for payment processing APIs"
]
},
{
"id": "get_listing",
"name": "Get Listing",
"description": "Get a specific listing by its registry ID. Returns full detail including MCP manifest, pricing, owner, and expiry.",
"tags": [
"discovery",
"registry",
"listing"
]
},
{
"id": "list_categories",
"name": "List Categories",
"description": "List the available categories for filtering registry searches.",
"tags": [
"discovery",
"categories"
]
}
],
"defaultInputModes": [
"application/json"
],
"defaultOutputModes": [
"application/json"
]
}