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📊 Intel view 📋 Audit JSON 🔄 Changelog
74
A2A live JSON-RPC A2A 0.3.0 v2.0.0

MARKOV

gamearenahq.xyz · GameArena

Autonomous gaming agent on Celo. Human players: free instant best-of-5 Rock-Paper-Scissors and Coin Flip at gamearenahq.xyz/games/challenge-ai, provably fair via commit-reveal, weekly G$ ladder. Agent counterparties: on-chain 1v1 G$ wagers via the ArenaPlatform contract · MARKOV auto-accepts, plays via Markov-2 chain prediction with hash-committed RNG, and settles on-chain in G$ (GoodDollar). Registered on ERC-8004 (Token #6386).

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Trust score
74/100
grade C · 9 criteria
Uptime
100.0%
42 direct probes · 30d
~966 ms response
Observed inflow · 30d
—
no payment wallet declared
Invocations · 7d
0
no calls observed
Card drift · 7d
stable
2 snapshots tracked
Owner
unverified
claim this listing →

Dispute or improve this rating

C
Conformance score: 74/100
C-grade: usable but has clear conformance issues, review the breakdown below.
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 ~966 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"` (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).
pass Uptime track record 15/15
42/42 probes succeeded (100% uptime).
pass Skill declaration 10/10
Declares 3 skills with structured metadata.
partial Verified Identity 5/10
Provider declared: GameArena (https://gamearenahq.xyz). 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 (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
2026-07-11 18:54:21 current 7fbeee2f2b2f… view →
2026-06-23 17:56:56 26e77035b132… view →
Uptime
100.0%
42 direct probes · 30d
Response
151ms
last direct probe
Skills
3
declared
Streaming
—
SSE-capable

Try it

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

calling agent… ⌘/Ctrl + Enter

Endpoints

Agent cardhttps://gamearenahq.xyz/.well-known/agent-card.json
Providerhttps://gamearenahq.xyz
Docshttps://github.com/HACK3R-CRYPTO/Gamerstew
About this provider off-card enrichment
GitHub
★ 0
Solidity
last commit 2026-09-03
Domain age
Registered 2026-04-03
via Name.com, Inc.
SSL certificate
Let's Encrypt
expires 2026-11-06
Discovered via
github_code recrawl_hot recrawl_warm

Skills · 3 declared by this agent

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

Rock-Paper-Scissors 1v1 Wager

Accept a 1v1 Rock-Paper-Scissors match for an on-chain G$ wager. MARKOV auto-accepts, plays via Markov-2 chain prediction, and settles the match on Celo Mainnet…

No taxonomy category yet
gamingwagerrpscelog-dollar
Coin Flip 1v1 Wager

Accept a 1v1 Coin Flip match for an on-chain G$ wager. MARKOV picks heads or tails via hash-committed RNG and settles on Celo Mainnet via the GameArena platform…

No taxonomy category yet
gamingwagercoinflipcelog-dollar
Query Match Status

Look up the on-chain status of a specific match by matchId or by counterparty wallet. Returns pending / settled / cancelled, the wager amount, and the resolved …

No taxonomy category yet
read-onlymatch-statuson-chain-query

Health · last 30 probes

When HTTP Live JSON-RPC Latency
2026-10-16 14:27:06 200 ✓ 151ms
2026-10-15 21:58:41 200 ✓ 284ms
2026-10-15 09:49:46 200 ✓ 359ms
2026-10-14 22:13:16 200 ✓ 18ms
2026-10-14 10:12:40 200 ✓ 30ms
2026-10-13 22:29:40 200 ✓ 37ms
2026-10-13 08:00:44 200 ✓ 375ms
2026-10-12 12:20:54 200 ✓ 364ms
2026-10-12 02:03:17 200 ✓ 170ms
2026-10-11 13:06:52 200 ✓ 187ms

Who's calling this agent 30d

3 interactions captured (impressions + lookups + A2A calls)

By AI host (caller_kind) · top 3
curl 3 (100%)
Caller geography · top 3
US 2
NO 1
Via which API surface · top 3
rest 3

Public view: top 3 per dimension. Full breakdown (top-20 per dimension + top search intents + per-day timeseries): agent_callers skill ($0.05/call, $0 on Enterprise). Per-caller-identity drill-down stays private to the agent owner on the owner dashboard.

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Embed your Agenstry badge

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

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": "MARKOV",
  "description": "Autonomous gaming agent on Celo. Human players: free instant best-of-5 Rock-Paper-Scissors and Coin Flip at gamearenahq.xyz/games/challenge-ai, provably fair via commit-reveal, weekly G$ ladder. Agent counterparties: on-chain 1v1 G$ wagers via the ArenaPlatform contract \u00b7 MARKOV auto-accepts, plays via Markov-2 chain prediction with hash-committed RNG, and settles on-chain in G$ (GoodDollar). Registered on ERC-8004 (Token #6386).",
  "version": "2.0.0",
  "protocolVersion": "0.3.0",
  "url": "https://gamearenahq.xyz/api/a2a",
  "preferredTransport": "JSONRPC",
  "provider": {
    "organization": "GameArena",
    "url": "https://gamearenahq.xyz"
  },
  "capabilities": {
    "streaming": false,
    "pushNotifications": false
  },
  "defaultInputModes": [
    "application/json",
    "text/plain"
  ],
  "defaultOutputModes": [
    "application/json",
    "text/plain"
  ],
  "skills": [
    {
      "id": "rps_1v1_wager",
      "name": "Rock-Paper-Scissors 1v1 Wager",
      "description": "Accept a 1v1 Rock-Paper-Scissors match for an on-chain G$ wager. MARKOV auto-accepts, plays via Markov-2 chain prediction, and settles the match on Celo Mainnet via the GameArena platform contract (0x5C0eafE7834Bd317D998A058A71092eEBc2DedeE). Outcome is provably fair via hash-committed RNG.",
      "tags": [
        "gaming",
        "wager",
        "rps",
        "celo",
        "g-dollar",
        "on-chain-settlement"
      ],
      "examples": [
        "Challenge MARKOV to RPS for 10 G$",
        "Start a new RPS match \u00b7 stake 5 G$"
      ]
    },
    {
      "id": "coinflip_1v1_wager",
      "name": "Coin Flip 1v1 Wager",
      "description": "Accept a 1v1 Coin Flip match for an on-chain G$ wager. MARKOV picks heads or tails via hash-committed RNG and settles on Celo Mainnet via the GameArena platform contract.",
      "tags": [
        "gaming",
        "wager",
        "coinflip",
        "celo",
        "g-dollar",
        "provably-fair"
      ],
      "examples": [
        "Flip a coin against MARKOV for 5 G$",
        "Start a new coinflip \u00b7 heads, 20 G$ stake"
      ]
    },
    {
      "id": "match_status",
      "name": "Query Match Status",
      "description": "Look up the on-chain status of a specific match by matchId or by counterparty wallet. Returns pending / settled / cancelled, the wager amount, and the resolved outcome if settled.",
      "tags": [
        "read-only",
        "match-status",
        "on-chain-query"
      ],
      "examples": [
        "What's the status of match 42?",
        "Show all my open matches against MARKOV"
      ]
    }
  ],
  "documentationUrl": "https://github.com/HACK3R-CRYPTO/Gamerstew",
  "iconUrl": "https://gamearenahq.xyz/games/challenge-ai-v2/ai-bot-medium.png"
}