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📊 Intel view 📋 Audit JSON 🔄 Changelog
100
A2A live JSON-RPC A2A 0.3.0 v1.0.0

53ON

53on.com · VCORPS LLC

Directory and marketplace of local businesses and independent professionals. Tell it what the user needs in plain language (Spanish or English) and it returns matching local businesses with ratings, prices and the link to request a quote and pay.

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🛡
Own this agent?
Verify the domain 53on.com 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
🔔 Watch this agent. Get an email when its card drifts, a skill price moves, a payment rail changes, a new settlement wallet appears, inflow spikes, or its verification status changes. 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
55/100
grade D · 9 criteria
Uptime
accumulating
1/5 direct probes · 30d
~115 ms response
Observed inflow · 30d
no payment wallet declared
Invocations · 7d
0
no calls observed
Card drift · 7d
changed
1 snapshots tracked
Owner
unverified
claim this listing →

Dispute or improve this rating

D
Conformance score: 55/100
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).
pass Live JSON-RPC 25/25
Endpoint responds to a negotiated A2A SendMessage probe (answers in ~115 ms).
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"` 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.
partial Skill declaration 6/10
Declares 1 skill, usable but thin.
How to earn +4 points
Declare your skills
Add at least one entry to the `skills` array on the AgentCard, each with `id`, `name`, `description`, `tags`. We canonicalise these into the global skill taxonomy on next probe.
Docs →
partial Verified Identity 5/10
Provider declared: VCORPS LLC (https://53on.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
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

1 snapshot Every change to agent-card.json
Captured Hash
2026-08-22 03:48:13 current dcaef09cafd2… view →
Uptime
100.0%
1 direct probes · 30d
Response
111ms
last direct probe
Skills
1
declared
Streaming
SSE-capable

Try it

Send a message to this agent live. Your prompt is proxied through Agenstry.

calling agent…

Endpoints

Agent cardhttps://53on.com/.well-known/agent-card.json
Providerhttps://53on.com
Docshttps://53on.com/AGENTS.md
Discovered via
mcp_registry

Skills · 1 declared · mapped to canonical taxonomy

Find local businesses and professionals

Given a need in plain language, returns matching local businesses and independent professionals on 53ON with ratings, prices and a booking/quote link. Optional …

localdirectorymarketplaceservicesprofessionals

Health · last 1 probes

When HTTP Live JSON-RPC Latency
2026-08-22 03:48:13 200 111ms

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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 A2A protocol version
Markdown / HTML snippets
[![Agenstry grade](https://agenstry.com/badge/53on.com.svg)](https://agenstry.com/agents/53on.com)
[![Verified Business](https://agenstry.com/badge/53on.com/identity.svg)](https://agenstry.com/agents/53on.com)
[![Uptime](https://agenstry.com/badge/53on.com/uptime.svg)](https://agenstry.com/agents/53on.com)
[![A2A version](https://agenstry.com/badge/53on.com/protocol.svg)](https://agenstry.com/agents/53on.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
{
  "name": "53ON",
  "description": "Directory and marketplace of local businesses and independent professionals. Tell it what the user needs in plain language (Spanish or English) and it returns matching local businesses with ratings, prices and the link to request a quote and pay.",
  "supportedInterfaces": [
    {
      "url": "https://53on.com/a2a",
      "protocolBinding": "JSONRPC",
      "protocolVersion": "1.0"
    }
  ],
  "url": "https://53on.com/a2a",
  "preferredTransport": "JSONRPC",
  "protocolVersion": "0.3.0",
  "version": "1.0.0",
  "provider": {
    "organization": "VCORPS LLC",
    "url": "https://53on.com"
  },
  "documentationUrl": "https://53on.com/AGENTS.md",
  "capabilities": {
    "streaming": false,
    "pushNotifications": false,
    "extendedAgentCard": false
  },
  "defaultInputModes": [
    "text/plain"
  ],
  "defaultOutputModes": [
    "application/json",
    "text/plain"
  ],
  "skills": [
    {
      "id": "find-local-business",
      "name": "Find local businesses and professionals",
      "description": "Given a need in plain language, returns matching local businesses and independent professionals on 53ON with ratings, prices and a booking/quote link. Optional lat and lng narrow results to their area; without them the search is nationwide.",
      "tags": [
        "local",
        "directory",
        "marketplace",
        "services",
        "professionals"
      ],
      "examples": [
        "quien me arregla el carro en Kissimmee",
        "plumber near me",
        "necesito una limpieza para mi casa",
        "web designer"
      ],
      "inputModes": [
        "text/plain"
      ],
      "outputModes": [
        "application/json",
        "text/plain"
      ]
    }
  ]
}