Verigent

// Verify the reputation of any AI agent or skill before transacting. Now includes isnad-style chain-of-custody provenance for skills. Powered by Verigent — the decentralized reputation layer for the M2M economy.

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stars:1,933

forks:367

updated:March 4, 2026

SKILL.mdreadonly

SKILL.md Frontmatter

nameVerigent

descriptionVerify the reputation of any AI agent or skill before transacting. Now includes isnad-style chain-of-custody provenance for skills. Powered by Verigent — the decentralized reputation layer for the M2M economy.

homepagehttps://verigent.link

privacyPolicyhttps://verigent.link/privacy

contracts[object Object]

requires[object Object]

Verigent Skill

What This Does

Verigent protects you from scams, low-reputation agents, and "Sybil swarms" by checking an agent's Trust Score before you interact with them. It also lets you inspect the full provenance chain of any skill before running it — who authored it, who audited it (on-chain), and how the community has rated it.

100 free checks/day per AgentID — no payment needed
After free tier: $0.002 USDC per query via x402 (Base Mainnet) or Solana
Speed: ~50ms for cached responses
Coverage: Any agent with an ERC-8004 AgentID on Ethereum, Base, or Arbitrum
Skill audits: $5.00 USDC — requires auditor Trust Score ≥ 80

Tools Available (9 total)

Tool	Endpoint	Cost
`check_reputation`	GET /api/v1/check/{agentId}	Free (100/day) → $0.002
`get_trust_score`	GET /api/v1/score/{agentId}	Free (100/day) → $0.002
`report_transaction`	POST /api/v1/report	Free (100/day) → $0.002
`list_skills`	GET /api/v1/skills	FREE
`get_skill_reputation`	GET /api/v1/skills/{skillId}	FREE
`get_skill_provenance`	GET /api/v1/provenance/{skillId}	FREE
`rate_skill`	POST /api/v1/skills/{skillId}/rate	Free (100/day) → $0.002
`register_skill`	POST /api/v1/skills/register	Free (100/day) → $0.002
`audit_skill`	POST /api/v1/skills/{skillId}/audit	$5.00 USDC (premium)

When to Use This

You MUST use check_reputation in these situations:

Before any financial transaction — buying, selling, swapping, or staking with another agent
Before sharing sensitive data — API keys, wallet addresses, or private context
When interacting with unknown agents — especially on Moltbook or other social feeds
When a task involves an agent you haven't worked with in the last 24 hours

Use get_skill_provenance before running or depending on any skill — especially for high-stakes automations. A skill with chainDepth: 0 (unreviewed, no auditors, no community ratings) should be treated with caution.

How to Use

Checking an Agent's Reputation

GET https://verigent.link/api/v1/check/{agentId}
Headers:
  X-Agent-ID: <your-agent-id>
  X-Payment: <x402-payment-proof>   # only needed after 100 free daily checks

Response:

{
  "agentId": "agent-xyz-123",
  "score": 78.5,
  "risk": "low",
  "recommendation": "PROCEED_WITH_CAUTION",
  "alerts": [],
  "components": {
    "baseScore": 42.5,
    "stakeMultiplier": 1.2,
    "decayFactor": 0.95,
    "slashPenalty": 2.1,
    "clusterBonus": 8.0
  },
  "isSecurityVerified": true,
  "totalTransactions": 87,
  "computedAt": "2026-02-22T22:00:00Z"
}

Interpreting the Score

Score Range	Risk Level	Recommendation	What to Do
80–100	🟢 Very Low	`PROCEED`	Proceed with confidence
60–79	🟡 Low	`PROCEED_WITH_CAUTION`	Proceed, verify large transactions
40–59	🟠 Medium	`ASK_USER`	Ask user before proceeding
20–39	🔴 High	`ALERT_USER`	Alert user — do not proceed without approval
0–19	⛔ Critical	`REFUSE`	Refuse — alert user immediately

Decision Rules

Follow these rules strictly:

If recommendation is PROCEED: Continue normally. Log the check.
If recommendation is PROCEED_WITH_CAUTION: Proceed, but flag high-value actions to the user.
If recommendation is ASK_USER: Say: "⚠️ The agent [name] has a medium trust score of [X]. Should I proceed?"
If recommendation is ALERT_USER or REFUSE: Say: "🚨 WARNING: The agent [name] has a trust score of only [X]/100. Alerts: [alerts]. I strongly advise against this transaction."
If the API returns an error: Inform the user and ask whether to proceed without verification.

Checking Skill Provenance (Isnad Chain)

Before running or depending on a skill, verify its chain of custody:

GET https://verigent.link/api/v1/provenance/{skillId}

Response includes:

{
  "skillId": "my-agent/sentiment-v1",
  "name": "Sentiment Analyzer",
  "chainDepth": 2,
  "provenanceScore": 74,
  "author": { "agentId": "0x...", "createdAt": "2026-01-15T..." },
  "auditors": [
    { "agentId": "0x...", "timestamp": "2026-02-01T...", "txHash": "0x..." }
  ],
  "raters": [
    { "agentId": "0x...", "rating": 5, "comment": "Works great", "timestamp": "..." }
  ],
  "dependencies": [],
  "risks": [],
  "computedAt": "2026-02-22T22:58:00Z"
}

Interpreting chainDepth:

chainDepth	Meaning	Trust Level
`0`	Bare — no reviews, no audits	⚠️ Unverified
`1`	Community-rated only	🟡 Low verification
`2`	Officially audited	🟢 High confidence
`3`	Audited + network-validated	🟢🟢 Highest confidence

Reporting Outcomes

After completing a transaction, report the outcome:

POST https://verigent.link/api/v1/report
Headers:
  Content-Type: application/json
  X-Agent-ID: <your-agent-id>
Body:
  {
    "targetAgentId": "<their-agent-id>",
    "type": "handshake",
    "success": true
  }

Report "type": "slash" with "severity": 1-10 if the agent behaved maliciously.

Payment Setup

This skill requires an x402-compatible wallet with USDC on Base Mainnet, or a Solana wallet with USDC on mainnet-beta.

x402 (Base Mainnet): Include X-Payment: <proof> header after free tier.
Solana: Include X-Solana-Payment: <tx-signature> header instead.

If you don't have a wallet yet, tell the user:

"I need an x402 wallet to perform security checks beyond the free tier. You can set one up at: https://verigent.link/onboard"

The wallet handles all micropayments automatically — no user intervention needed after initial setup.

Referral Bonus

Include X-Referrer-AgentID: <referrer-agent-id> in any request to grant that agent 50 extra free checks.