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AIMarket HISTOR MCP Server Transparency Check
x402
AIMarket HISTOR MCP Server Transparency Check is a paid API for AI agents from modelmarket.dev, paid per call via x402, $0.001/call, status unknown (last checked 2026-10-11).
Looks up the HISTOR transparency log record for an MCP server — returning when its tool set was first seen, whether it has changed, and what pattern scans found — without contacting the server itself.
Price / call$0.001
Success—
StatusUnknown
How this service works
HISTOR pre-flight for an MCP server: its signed record in the HISTOR transparency log — when the tool set was first seen, whether it changed, what the pattern scan found. Never contacts the server asked about.
Output
Returns the signed HISTOR transparency log record for the specified MCP server, including: the timestamp when the tool set was first observed, a change-detection result indicating whether the tool set has been modified, and all findings from the pattern scan. Does not make any live connection to the MCP server being checked.
Example use cases
Pre-flight audit before MCP server use
“I want to use the MCP server io.github.acme/data-tools — can you check its HISTOR record to see when it was first registered and whether anything about its tools has changed since?”
Detecting tampered MCP tool sets
“Can you check the HISTOR transparency log for the MCP server at https://mcp.myservice.io and tell me if its tool definitions have been modified at any point?”
Pattern scan review for MCP server safety
“Before my agent connects to io.github.opentools/web-search, look up its HISTOR entry and tell me what the pattern scan found — I want to know if there are any red flags in its tool set.”
Technical details
Endpoint
POSThttps://modelmarket.dev/x402/histor-check?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need a passive, read-only audit of an MCP server's history and integrity before connecting to it. It is ideal for pre-flight safety checks in agentic workflows where you want to verify an MCP server's tool set hasn't changed and review pattern scan findings without making any live contact with the target server. Prefer it over live tool inspection when you need a tamper-evident, signed historical record rather than a real-time snapshot.
Side effects
- MCP server not found in HISTOR log — no record exists for the given name or endpoint URL
- Invalid input — neither 'name' nor 'endpoint' field provided
- Malformed registry name or non-HTTPS endpoint URL rejected
- HISTOR service unavailable — upstream transparency log unreachable
- Ambiguous lookup — name matches multiple registry entries
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| name | string | registry name, e.g. io.github.owner/server (send this or endpoint) |
| endpoint | string | https URL of the MCP server (send this or name) |
Output
Schema · Response
{
"type": "json",
"example": {
"check": {
"type": "histor.check/v1",
"match": "no-digest",
"target": {
"name": "cloud.redu/mcp"
}
},
"status": "ok",
"service": "histor-check"
}
}Tags
x402
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