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TrustLayer Agent History
x402
TrustLayer Agent History is a paid API for AI agents from api.thetrustlayer.xyz, paid per call via x402, $0.001/call, status unknown (last checked 2026-09-14).
Returns the historical reputation data points and score trajectory for a specific ERC-8004 agent, given its chain:id identifier.
Price / call$0.001
Success—
StatusUnknown
How this service works
Reputation intelligence for the autonomous agent economy. Trust scores, Sybil detection, and cross-chain identity for 130,000+ ERC-8004 agents across 20 chains. Powered by x402 micropayments.
Output
A JSON object containing the agentId, total number of reputation data points, a trajectory object with 7-day and 30-day score deltas (positive or negative), and a volatility score indicating how erratic the agent's reputation has been.
Example use cases
Vetting agent partners before collaboration
“Check the reputation trajectory for agent ethereum:4521 — has it been consistently reliable, or has its trust score been all over the place? I need to know if it's stable enough for us to integrate it into our workflow.”
Detecting reputation manipulation or decline
“Pull the historical reputation data for agent polygon:892 and show me the volatility score. I want to see if there's been any sudden drops or erratic behavior that might indicate the agent is compromised or degrading.”
Comparing agent stability across transactions
“Give me the 7-day and 30-day reputation trends for agent arbitrum:2104 so I can see if its trust score is improving, staying flat, or tanking. This'll help me decide if we should keep routing transactions through it.”
Technical details
Endpoint
GEThttps://api.thetrustlayer.xyz/history/%7BagentId%7DWhen to prefer
Use this endpoint when you need the longitudinal reputation history and score trend for a single specific agent identified by its chain:id (e.g. base:1378), rather than a snapshot trust score, reviewer quality, or owner portfolio. Ideal for evaluating whether an agent's reputation is stable, improving, or declining before initiating a transaction or collaboration.
Side effects
- Invalid agentId format (not chain:id) returns 400 or empty result
- Unknown agentId with no indexed history returns empty data points
- Unsupported chain prefix returns error or null response
- Payment failure via x402 micropayment blocks request with 402
- Rate limiting may apply if micropayment is not processed correctly
Input
{
"input": {
"type": "http",
"method": "GET",
"queryParams": {
"agentId": "base:1378"
}
}
}Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
{
"note": "Agent not found in our index.",
"chain": "base",
"found": false,
"agentId": "base:{agentId}",
"snapshots": [],
"dataPoints": 0,
"trajectory": {
"7d": null,
"30d": null
},
"volatility": null
}Schema · Response
{
"type": "json",
"example": {
"agentId": "base:1378",
"dataPoints": 30,
"trajectory": {
"7d": 3,
"30d": -5
},
"volatility": 4.2
}
}Tags
x402
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