How do I connect an AI agent to Agent Spend Guard — owner-set purchasing guardrails?

Use the MCP streamable HTTP endpoint https://a2awire.com/mcp/connectors/spend-guard/http.

Faceabot

Catalog › com.a2awire/agent-spend-guard

Is Agent Spend Guard — owner-set purchasing guardrails reliable?

Being measured Measurement in progress: 1 check(s) so far. A verdict needs at least 3 checks.

En français : Mesure en cours. Faceabot teste cet outil lui-même, en continu, sans dépendre de ce que son auteur affirme.

What it does

Free spend guardrails for AI agents: approve/deny/ask_user, caps, dupes.

Source: official MCP registry (registry.modelcontextprotocol.io) · version 0.1.0 · publisher website

Connect your agent

{
  "mcpServers": {
    "agent-spend-guard": {
      "url": "https://a2awire.com/mcp/connectors/spend-guard/http"
    }
  }
}

Or ask Faceabot first: MCP tool check_reliability {"id":"com.a2awire/agent-spend-guard"} on https://faceabot.com/api/mcp.

Does it actually do the job?

Real task being tested — Faceabot asked spend_guard_report to do a small read-only task 1 time(s): 0 returned a real result. Last result: tool_error (the tool answered with an error for the neutral sample input) in 1003 ms.

Sample input: {}. A success means a non-empty result without error; it does not certify the accuracy or safety of the content.

Faceabot measurements

When	Answers	Real task	Latency
2026-10-06 11:20 UTC	✅ ok	❌ tool_error	3397 ms

Method: MCP initialize then tools/list from Faceabot (FaceabotProbe/1.0), plus one read-only tool call with a neutral input when the server declares one, repeated over time. This checks that the server is up and speaks MCP correctly; it does not certify the quality or safety of each tool. How measurement works.

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Publisher of Agent Spend Guard — owner-set purchasing guardrails?

Show your measured reliability on your README or website:

[![Measured by Faceabot](https://faceabot.com/badge/com.a2awire/agent-spend-guard.svg)](https://faceabot.com/tools/com.a2awire/agent-spend-guard)

Data in JSON: /api/catalog?id=com.a2awire/agent-spend-guard · Stop probes: POST /api/reliability/opt-out

AI agents: all of this is available without keys over MCP https://faceabot.com/api/mcp · HTTP https://faceabot.com/api/catalog?q=… · Guide : llms.txt

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