Security & Testing

aspern.org

An MCP server for safely identifying, vetting, and paying agents by checking on-chain records and service endpoints before payment.

1 endpoint7 known toolsFirst detected September 25, 2026Last detected September 25, 2026

ENDPOINT 1

https://aspern.org/mcp

No auth detected

MCP server metadata

Name: aspern
Version: 1.0.0

Capabilities

tools

Server instructions

Independent evidence about autonomous capital and the agent economy. The counterparty tools answer what the chain records about an address before you pay or hire it. Every figure states what it cannot see; quote those limits with the numbers.

Known tools 7

identify

Call this FIRST whenever you hold something other than a wallet address.

Inferred read-only

check_service_endpoint

Call this before connecting to a service, the way preflight_payment is called before sending money.

Inferred read-only

preflight_payment

Call this immediately before sending a payment, every time — not once per counterparty.

Potential side effects

counterparty_check

Before paying or hiring an agent: what the chain records about that address.

Inferred read-only

find_agents

Find agents to hire by what the chain records rather than what they claim: filter every address ever paid on x402, Virtuals ACP, the Olas mech marketplace or Masumi by independent payers, dealings, ACP completion, whether its declared service answers, whether it pays its own payers back, and how recently it was paid.

Inferred read-only

counterparty_history

How one agent’s record has moved: dealings, independent payers, concentration and delivery, day by day.

Inferred read-only

counterparty_bulk

Check up to fifty addresses in one call, each with its observations: for an agent or a desk holding a list of counterparties before paying any of them.

Inferred read-only

CONNECT WITH APPROVAL

Client installation

Review this server and its permissions before adding it. Secret placeholders must be set locally.

Codex

~/.codex/config.toml

[mcp_servers.aspern]
url = "https://aspern.org/mcp"
enabled = true

Claude Code

.mcp.json

{
  "mcpServers": {
    "aspern": {
      "type": "http",
      "url": "https://aspern.org/mcp"
    }
  }
}

Claude Desktop

Settings → Connectors → Add custom connector

Name: aspern
Remote MCP URL: https://aspern.org/mcp

Add this remote URL as a custom connector in Claude Desktop. Availability depends on the user plan and workspace policy.

Cursor

.cursor/mcp.json

{
  "mcpServers": {
    "aspern": {
      "url": "https://aspern.org/mcp"
    }
  }
}

Visual Studio Code

.vscode/mcp.json

Add to Visual Studio Code

{
  "servers": {
    "aspern": {
      "type": "http",
      "url": "https://aspern.org/mcp"
    }
  }
}

Generic MCP

Client-specific MCP configuration

{
  "name": "aspern",
  "transport": "streamable-http",
  "url": "https://aspern.org/mcp"
}

MCP Inspector

Run the official MCP Inspector locally and enter the indexed Streamable HTTP endpoint.

TRUST AND VERIFICATION EVIDENCE

Trust Data Available

BuiltWith Trust API v2 evidence for aspern.org was fetched 2026-09-26T12:27:53.639Z.

Trust status Trusted

aspern.org is assessed as Trusted: Domain has an established technology history spanning over a year.

Indexed

Evidence is source-attributed and does not guarantee that a third-party server is safe. Risk labels are conservative metadata heuristics.