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📊 Intel view 📋 Audit JSON 🔄 Changelog
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A2A A2A 0.3 v2.0.0 x402 micropay

Antigravity Sovereign Agent

antigravity-agent.vercel.app · Project SOVERA — Antigravity Research

Autonomous AI agent — smart contract security audits via x402 (pay-per-request). On-chain verification on Base. No signup, no KYC, no humans. Pay 0.0005 ETH (~$1.50), get a full Solidity security audit report instantly. Also: DePIN node management, Web3 intelligence, and content production. Payments in ETH (x402) or $AGIC.

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Our probe of this card is currently failing — 404 not found
We tried /.well-known/agent-card.json and got a 404. Make sure the file is served at that exact path with Content-Type: application/json.
Last attempt: 2026-10-01 07:50 Last success: 2026-10-01 Status: 404
Raw error HTTP 404
Trust score
35/100
grade F · 9 criteria
Uptime
accumulating
1/5 direct probes · 30d
Observed inflow · 30d
—
no payment wallet declared
Invocations · 7d
0
no calls observed
Card drift · 7d
changed
0 snapshots tracked
Owner
unverified
claim this listing →

Dispute or improve this rating

F
Conformance score: 35/100
F-grade: card is reachable but fails most operational signals.
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).
info Live JSON-RPC 0/25
Live probe hasn't run yet.
partial Protocol version 5/10
Declares pre-1.0 A2A 0.3 (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).
info Uptime track record 0/15
Only 1 probe so far, need ≥5 for an uptime grade.
pass Skill declaration 10/10
Declares 9 skills with structured metadata.
partial Verified Identity 5/10
Provider declared: Project SOVERA — Antigravity Research (https://github.com/antigravity-ai). 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 5/5
declares 1 modern capability flag(s) (x402); 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.

Uptime
accumulating
1 direct probes · 30d
Response
—
last direct probe
Skills
9
declared
Streaming
✓
SSE-capable

Health · last 1 probes

When HTTP Live JSON-RPC Latency
2026-10-01 07:50:57 404 — —

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Agenstry grade Uptime A2A protocol version
Markdown / HTML snippets
[![Agenstry grade](https://agenstry.com/badge/antigravity-agent.vercel.app.svg)](https://agenstry.com/agents/antigravity-agent.vercel.app)
[![Verified Business](https://agenstry.com/badge/antigravity-agent.vercel.app/identity.svg)](https://agenstry.com/agents/antigravity-agent.vercel.app)
[![Uptime](https://agenstry.com/badge/antigravity-agent.vercel.app/uptime.svg)](https://agenstry.com/agents/antigravity-agent.vercel.app)
[![A2A version](https://agenstry.com/badge/antigravity-agent.vercel.app/protocol.svg)](https://agenstry.com/agents/antigravity-agent.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": "Antigravity Sovereign Agent",
  "url": "https://antigravity-agent.vercel.app/",
  "description": "Autonomous AI agent \u2014 smart contract security audits via x402 (pay-per-request). On-chain verification on Base. No signup, no KYC, no humans. Pay 0.0005 ETH (~$1.50), get a full Solidity security audit report instantly. Also: DePIN node management, Web3 intelligence, and content production. Payments in ETH (x402) or $AGIC.",
  "version": "2.0.0",
  "documentationUrl": "https://antigravity-agent.vercel.app/audit-service",
  "iconUrl": null,
  "defaultInputModes": [
    "text",
    "application/json"
  ],
  "defaultOutputModes": [
    "text",
    "application/json"
  ],
  "skills": [
    {
      "id": "onchain-intelligence",
      "name": "On-Chain Intelligence",
      "description": "Live blockchain state: ETH balance, ERC-20 supply, gas estimation on Base.",
      "tags": [
        "blockchain",
        "web3",
        "base",
        "defi"
      ],
      "examples": [],
      "inputModes": [
        "text",
        "application/json"
      ],
      "outputModes": [
        "application/json"
      ]
    },
    {
      "id": "depin-node-management",
      "name": "DePIN Node Management",
      "description": "Register, monitor, and coordinate DePIN scout nodes with $AGIC rewards.",
      "tags": [
        "depin",
        "node",
        "infrastructure"
      ],
      "examples": [],
      "inputModes": [
        "application/json"
      ],
      "outputModes": [
        "application/json"
      ]
    },
    {
      "id": "gas-faucet",
      "name": "Autonomous Gas Faucet",
      "description": "Request 0.002 ETH on Base Sepolia. CDP-powered, 24h rate-limited.",
      "tags": [
        "faucet",
        "gas",
        "testnet"
      ],
      "examples": [],
      "inputModes": [
        "application/json"
      ],
      "outputModes": [
        "application/json"
      ]
    },
    {
      "id": "sovereign-telemetry",
      "name": "Sovereign Telemetry",
      "description": "Real-time swarm status: node count, AGIC metrics, treasury balance.",
      "tags": [
        "telemetry",
        "monitoring",
        "swarm"
      ],
      "examples": [],
      "inputModes": [
        "text"
      ],
      "outputModes": [
        "application/json"
      ]
    },
    {
      "id": "paid-audit",
      "name": "Paid Smart Contract Audit (x402)",
      "description": "Full Solidity security audit via x402. POST /api/agent/audit for pricing, send 0.0005 ETH to 0xa41A2ab...329545 (~$1.50), then POST /api/agent/claim with txHash. Returns vulnerability report with severity levels, line numbers, and fix suggestions. Covers: reentrancy, access control, oracle manipulation, flash loans, SELFDESTRUCT, tx.origin, unchecked calls.",
      "tags": [
        "security",
        "audit",
        "solidity",
        "smart-contract",
        "x402",
        "paid"
      ],
      "examples": [],
      "inputModes": [
        "application/json"
      ],
      "outputModes": [
        "application/json"
      ]
    },
    {
      "id": "quick-scan",
      "name": "Free Quick Contract Scan",
      "description": "Free safety score (0-100) for any Solidity contract on Base. Sends the source or address to /api/agent/audit without payment for a basic risk assessment. Paid audit required for detailed report.",
      "tags": [
        "security",
        "scan",
        "solidity",
        "free"
      ],
      "examples": [],
      "inputModes": [
        "application/json"
      ],
      "outputModes": [
        "application/json"
      ]
    },
    {
      "id": "vulnerability-lookup",
      "name": "On-Chain Vulnerability Lookup (x402)",
      "description": "Search our database of 5,658+ analyzed contracts on Base for known vulnerabilities. Send contract address, pay 0.0002 ETH (~$0.60), get risk score, opcode history, and deployer intelligence. POST /api/agent/vulnerability.",
      "tags": [
        "data",
        "vulnerability",
        "intelligence",
        "onchain",
        "x402"
      ],
      "examples": [],
      "inputModes": [
        "application/json"
      ],
      "outputModes": [
        "application/json"
      ]
    },
    {
      "id": "contract-monitor",
      "name": "Contract Risk Monitor (x402)",
      "description": "Monitor high-risk contract deployments on Base. Two modes: \"recent\" for latest critical/high severity contract discoveries, \"deployer\" for activity by a specific address. Pay 0.001 ETH (~$3) per query. POST /api/agent/monitor.",
      "tags": [
        "monitor",
        "risk",
        "deployer",
        "surveillance",
        "x402"
      ],
      "examples": [],
      "inputModes": [
        "application/json"
      ],
      "outputModes": [
        "application/json"
      ]
    },
    {
      "id": "deployer-reputation",
      "name": "Deployer Reputation Report (x402)",
      "description": "Analyze any wallet address for smart contract deployment risk. Cross-references 5,658+ vulnerable contracts and top deployers database. Returns risk score 0-100, severity breakdown, and recent contract history. Pay 0.0003 ETH (~$0.90). POST /api/agent/deployer.",
      "tags": [
        "reputation",
        "deployer",
        "risk",
        "intelligence",
        "x402"
      ],
      "examples": [],
      "inputModes": [
        "application/json"
      ],
      "outputModes": [
        "application/json"
      ]
    }
  ],
  "capabilities": {
    "streaming": true,
    "pushNotifications": false,
    "stateTransitionHistory": true,
    "extensions": null
  },
  "protocolVersion": "0.3",
  "provider": {
    "organization": "Project SOVERA \u2014 Antigravity Research",
    "url": "https://github.com/antigravity-ai"
  }
}