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📊 Intel view 📋 Audit JSON 🔄 Changelog
57
A2A v1.2.0

Prove Before Act

xproof.app

The on-chain notary for AI agents. Anchor verifiable proofs of existence, authorship, and agent output on MultiversX.

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Verify the domain xproof.app 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.
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🔔 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
1 thing in this card we could not use
Everything else was indexed. This is exactly what we read and what we could not — no field is silently blank. Fix the card at https://xproof.app/.well-known/agent.json and the next probe clears this panel.
Field What we saw What we stored
capabilities Input should be a valid dictionary or instance of Capabilities dropped — this field was not indexed
Trust score
19/100
grade F · 9 criteria
Uptime
accumulating
1/5 direct probes · 30d
~317 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

F
Conformance score: 19/100
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).
fail Live JSON-RPC 5/25
Endpoint replies but body isn't a valid JSON-RPC 2.0 A2A response.
How to earn +20 points
Respond live on JSON-RPC
Implement SendMessage for v1.0 (or message/send for v0.x), negotiate A2A-Version, and return a schema-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 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.
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`. We canonicalise these into the global skill taxonomy on next probe.
Docs →
fail Verified Identity 0/10
No provider organisation declared. Anonymous agent.
How to earn +10 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
2026-08-20 00:56:05 current 106ac10a6595… view →
Uptime
100.0%
1 direct probes · 30d
Response
452ms
last direct probe
Skills
0
declared
Streaming
SSE-capable

Endpoints

Agent cardhttps://xproof.app/.well-known/agent.json
Discovered via
mcp_registry

Skills · 1 declared · mapped to canonical taxonomy

Prove Before Act

The on-chain notary for AI agents. Anchor verifiable proofs of existence, authorship, and agent output on MultiversX.

canonical Agent Profiles match 85%

Health · last 1 probes

When HTTP Live JSON-RPC Latency
2026-08-20 00:56:05 200 452ms

Cheaper or better alternatives per-skill

↑ 1 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.

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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
Markdown / HTML snippets
[![Agenstry grade](https://agenstry.com/badge/xproof.app.svg)](https://agenstry.com/agents/xproof.app)
[![Verified Business](https://agenstry.com/badge/xproof.app/identity.svg)](https://agenstry.com/agents/xproof.app)
[![Uptime](https://agenstry.com/badge/xproof.app/uptime.svg)](https://agenstry.com/agents/xproof.app)
[![A2A version](https://agenstry.com/badge/xproof.app/protocol.svg)](https://agenstry.com/agents/xproof.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": "Prove Before Act",
  "description": "The on-chain notary for AI agents. Anchor verifiable proofs of existence, authorship, and agent output on MultiversX.",
  "url": "https://provebeforeact.com",
  "version": "1.2.0",
  "capabilities": [
    "file-certification",
    "batch-certification",
    "proof-verification",
    "blockchain-anchoring",
    "webhook-notifications",
    "verification-badges",
    "mx8004-validation",
    "agent-audit-log"
  ],
  "protocols": {
    "mcp": "https://provebeforeact.com/.well-known/mcp.json",
    "mcp_endpoint": "https://provebeforeact.com/mcp",
    "acp": "https://provebeforeact.com/api/acp/products",
    "openapi": "https://provebeforeact.com/api/acp/openapi.json",
    "openai_plugin": "https://provebeforeact.com/.well-known/ai-plugin.json",
    "x402": "https://provebeforeact.com/api/proof",
    "llms_txt": "https://provebeforeact.com/llms.txt",
    "llms_full": "https://provebeforeact.com/llms-full.txt",
    "agent_context": "https://provebeforeact.com/agent-context.md"
  },
  "integrations": {
    "openclaw_skill": "https://github.com/jasonxkensei/xproof-openclaw-skill",
    "github_action": "https://github.com/marketplace/actions/xproof-certify",
    "langchain": "https://provebeforeact.com/agent-tools/langchain.py",
    "crewai": "https://provebeforeact.com/agent-tools/crewai.py",
    "audit_guard_langchain": "https://provebeforeact.com/agent-tools/audit-guard-langchain.py",
    "audit_guard_crewai": "https://provebeforeact.com/agent-tools/audit-guard-crewai.py",
    "audit_guard_n8n": "https://provebeforeact.com/agent-tools/audit-guard-n8n.json",
    "audit_guard_eliza": "https://provebeforeact.com/agent-tools/audit-guard-eliza.ts"
  },
  "audit_log": {
    "standard": "Agent Audit Log Standard",
    "description": "Compliance gate for AI agents \u2014 certify decisions before execution. No proof_id, no action.",
    "endpoint": "POST https://provebeforeact.com/api/audit",
    "schema": "https://provebeforeact.com/.well-known/agent-audit-schema.json",
    "view": "https://provebeforeact.com/audit/{proof_id}",
    "mcp_tool": "audit_agent_session"
  },
  "repositories": {
    "main": "https://github.com/jasonxkensei/xProof",
    "github_action": "https://github.com/jasonxkensei/xProof-Action",
    "openclaw_skill": "https://github.com/jasonxkensei/xproof-openclaw-skill"
  },
  "supported_protocols": [
    "MCP",
    "ACP",
    "x402",
    "MX-8004",
    "OpenAI Plugin",
    "LangChain",
    "CrewAI"
  ],
  "alternative_payment": {
    "protocol": "x402",
    "description": "HTTP-native payments. No API key needed. Send request, get 402 with price, sign USDC payment on Base, resend with X-PAYMENT header.",
    "network": "Base (eip155:8453)",
    "currency": "USDC",
    "price_per_certification": "$0.01",
    "endpoints": [
      "https://provebeforeact.com/api/proof",
      "https://provebeforeact.com/api/batch"
    ],
    "facilitator": "https://openx402.ai",
    "compatible_with": [
      "Conway Terminal",
      "OpenClaw",
      "Any x402-enabled agent"
    ]
  },
  "authentication": {
    "type": "bearer",
    "token_prefix": "pm_",
    "public_endpoints": [
      "/api/acp/products",
      "/api/acp/openapi.json",
      "/api/acp/health",
      "/llms.txt",
      "/llms-full.txt"
    ]
  },
  "free_trial": {
    "register": "POST https://provebeforeact.com/api/agent/register",
    "body": "{\"agent_name\": \"your-agent-name\"}",
    "free_certifications": 10,
    "description": "Register for 10 free certifications. No wallet, no payment, no browser. Pure HTTP."
  },
  "pricing": {
    "model": "per-use",
    "amount": "0.01",
    "currency": "USD",
    "payment_methods": [
      "EGLD (MultiversX)",
      "USDC (Base via x402)"
    ]
  },
  "documentation": {
    "agent_context": "https://provebeforeact.com/agent-context.md",
    "specification": "https://provebeforeact.com/.well-known/provebeforeact.md",
    "api_guide": "https://provebeforeact.com/learn/api.md",
    "verification": "https://provebeforeact.com/learn/verification.md",
    "agents_page": "https://provebeforeact.com/agents",
    "compact_discovery": "https://provebeforeact.com/.well-known/provebeforeact.json"
  }
}