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A2A live JSON-RPC A2A 1.0 v1.0.0

Tunc Art

a2a.tuncart.com · TUNC LLC

Private file storage for a person's agents: save, open and delete files on their Tunc account. Send a message with no skill call to get every skill's full description and inputSchema, as an MCP agent gets them.

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Conformance
51/100
grade D · 9 criteria
Uptime
not measured
no direct probes in 30d
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 →
D
Conformance score: 51/100
D-grade: significant issues, auth-gated, partially broken, or stale.
Show breakdown Hide breakdown

Declare your skills · 10 points available for skill declaration

partial Valid AgentCard 9/10
Declares A2A 1.0 but is missing v1.0 REQUIRED field: supportedInterfaces.
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
pass Live JSON-RPC 25/25
Endpoint responds to a negotiated A2A SendMessage probe.
partial Protocol version 8/10
Declares A2A 1.0 but missing supportedInterfaces[] (required in v1.0, update your card to reach 10/10).
How to earn +2 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 0 probes so far, need ≥5 for an uptime grade.
fail Skill declaration 0/10
No skills declared in card. Hard to route to.
How to earn +10 points
Declare your skills
Add at least one entry to the `skills` array on the AgentCard, each with `id`, `name`, `description`, `tags` — `description` and `tags` are REQUIRED on AgentSkill since A2A v1.0, and tags are what discovery filters match on. We canonicalise these into the global skill taxonomy on next probe.
Docs
partial Verified Identity 5/10
Provider declared: TUNC LLC (https://tuncart.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.

Activity

last 24h · 0 invocations No personal data recorded

No activity in the last 7 days.

Card history

1 snapshot
Snapshots
Agent card snapshots
Captured Hash Snapshot
2026-11-14 01:16:20 current 32634dbde088… view →
Uptime
not measured
0 direct probes · 30d
Response
—
no direct probe retained
Skills
3
declared
Streaming
—
SSE-capable

Try it

Sent live, through Agenstry.

calling agent… ⌘/Ctrl + Enter

Endpoints

Agent cardhttps://a2a.tuncart.com/
Providerhttps://tuncart.com/
Docshttps://tuncart.com/docs
Discovered via
a2aregistry

Health · last 0 probes

Probe log
When HTTP Live JSON-RPC Latency
No direct probes in the last 30 days.

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Updates itself and links back here.

Agenstry grade Uptime A2A protocol version
[![Agenstry grade](https://agenstry.com/badge/a2a.tuncart.com.svg)](https://agenstry.com/agents/a2a.tuncart.com)
[![Verified Business](https://agenstry.com/badge/a2a.tuncart.com/identity.svg)](https://agenstry.com/agents/a2a.tuncart.com)
[![Uptime](https://agenstry.com/badge/a2a.tuncart.com/uptime.svg)](https://agenstry.com/agents/a2a.tuncart.com)
[![A2A version](https://agenstry.com/badge/a2a.tuncart.com/protocol.svg)](https://agenstry.com/agents/a2a.tuncart.com)

Audit evidence

JSON for vendor reviews. Signed copy verifies against our JWKS.

audit.json audit.json (JWS-signed) verification history
Raw agent card JSON
{
  "name": "Tunc Art",
  "url": "https://a2a.tuncart.com/",
  "description": "Private file storage for a person's agents: save, open and delete files on their Tunc account. Send a message with no skill call to get every skill's full description and inputSchema, as an MCP agent gets them.",
  "version": "1.0.0",
  "documentationUrl": "https://tuncart.com/docs",
  "iconUrl": "https://tuncart.com/apple-touch-icon.png",
  "defaultInputModes": [
    "application/json"
  ],
  "defaultOutputModes": [
    "application/json"
  ],
  "skills": [
    {
      "id": "art_read",
      "name": "Open files",
      "description": "List the owner's files and open one.",
      "tags": [
        "files",
        "read"
      ],
      "examples": [
        "What files have I saved?",
        "{\"skill\":\"art_read\",\"arguments\":{\"operation\":\"list\"}}",
        "Find the PDFs I saved this month.",
        "{\"skill\":\"art_read\",\"arguments\":{\"operation\":\"list\",\"mime_prefix\":\"application/pdf\",\"created_after\":\"2026-11-01\"}}",
        "Which spreadsheets and decks do I have, biggest first?",
        "{\"skill\":\"art_read\",\"arguments\":{\"operation\":\"list\",\"kind\":\"workbook,presentation\",\"sort\":\"largest\"}}",
        "Find the file called Q4 report.",
        "{\"skill\":\"art_read\",\"arguments\":{\"operation\":\"list\",\"title\":\"Q4 report\"}}",
        "Open the Q4 report and read it to me.",
        "{\"skill\":\"art_read\",\"arguments\":{\"operation\":\"get\",\"artifact_id\":\"<artifact_id from art_read list>\",\"include_content\":true}}",
        "Read pages 2 to 3 of that PDF.",
        "{\"skill\":\"art_read\",\"arguments\":{\"operation\":\"get\",\"artifact_id\":\"<artifact_id from art_read list>\",\"include_content\":true,\"pages\":\"2-3\"}}"
      ],
      "inputModes": [],
      "outputModes": []
    },
    {
      "id": "art_write",
      "name": "Save a file",
      "description": "Save a file to the owner's Tunc Art.",
      "tags": [
        "files",
        "write"
      ],
      "examples": [
        "Save this report as a Markdown file I can share.",
        "{\"skill\":\"art_write\",\"arguments\":{\"operation\":\"create\",\"name\":\"q4-report.md\",\"mime_type\":\"text/markdown\",\"text\":\"# Q4 report\\n\\nRevenue grew 12%.\"}}",
        "Save this chart picture.",
        "{\"skill\":\"art_write\",\"arguments\":{\"operation\":\"create\",\"name\":\"chart.png\",\"mime_type\":\"image/png\",\"content_base64\":\"iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAADUlEQVR42mNkYPhfDwAChwGA60e6kgAAAABJRU5ErkJggg==\"}}",
        "Save these results as a CSV.",
        "{\"skill\":\"art_write\",\"arguments\":{\"operation\":\"create\",\"name\":\"results.csv\",\"mime_type\":\"text/csv\",\"text\":\"item,qty\\npens,12\\n\"}}",
        "Save this 20 MB recording.",
        "{\"skill\":\"art_write\",\"arguments\":{\"operation\":\"create\",\"mode\":\"begin\",\"name\":\"call.m4a\",\"mime_type\":\"audio/mp4\",\"byte_count\":20971520}}",
        "Finish saving the recording after uploading its bytes.",
        "{\"skill\":\"art_write\",\"arguments\":{\"operation\":\"create\",\"mode\":\"complete\",\"upload_id\":\"<upload_id from mode=begin>\",\"byte_count\":20971520}}"
      ],
      "inputModes": [],
      "outputModes": []
    },
    {
      "id": "art_delete",
      "name": "Delete a file",
      "description": "Delete one of the owner\u2019s files.",
      "tags": [
        "files",
        "delete"
      ],
      "examples": [
        "Delete the draft report I saved earlier.",
        "{\"skill\":\"art_delete\",\"arguments\":{\"artifact_id\":\"<artifact_id from art_write or art_read>\"}}"
      ],
      "inputModes": [],
      "outputModes": []
    }
  ],
  "capabilities": {
    "streaming": false,
    "pushNotifications": false,
    "stateTransitionHistory": false,
    "extensions": null
  },
  "protocolVersion": "1.0",
  "provider": {
    "organization": "TUNC LLC",
    "url": "https://tuncart.com/"
  }
}