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fidacy

fidacy is an MCP server for Claude Code from lucaslubi/fidacy-mcp. Its token cost is not measured, scanned A, original, Apache-2.0.

A local MCP server that lets an AI agent authorize, deny, release, and record consequential actions such as payments.

In plain words
What is it for?
Use it to review and govern high-impact actions from an agent, especially actions involving payments or other authorization decisions.
Why use it?
It gives you control over the agent’s limits and decisions while keeping the service non-custodial, meaning it does not hold your money.

MCP server for Claude Code

Written for Claude Code: shipped in a Claude Code plugin. Also seen: listed in a Claude config.

Part of the fidacy-payment-firewall plugin — 2 skills, 2 hooks, 1 MCP server shipped together

not rated 1repo 3mo ago A scan tokens not measured original Apache-2.0

Good fit Use it to review and govern high-impact actions from an agent, especially actions involving payments or other authorization decisions.

Compare 6 mcp servers from other repositories ↓
Install with agentmods
npx agentmods add mcp/lucaslubi/fidacy-mcp/fidacy-payment-firewall-fidacy
View source ↗ lucaslubi/fidacy-mcp fidacy.com
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Clone the repo
git clone --depth 1 https://github.com/lucaslubi/fidacy-mcp

Made for: Claude Code.

Or install fidacy-payment-firewall, the plugin that ships this one along with the rest of its 2 skills, 2 hooks, 1 MCP server.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for fidacy

README.md
[![agentmods](https://agentmods.dev/badge/mcp/lucaslubi/fidacy-mcp/fidacy-payment-firewall-fidacy/github.svg)](https://agentmods.dev/mcp/lucaslubi/fidacy-mcp/fidacy-payment-firewall-fidacy)
Your own site
<a href="https://agentmods.dev/mcp/lucaslubi/fidacy-mcp/fidacy-payment-firewall-fidacy"><img src="https://agentmods.dev/badge/mcp/lucaslubi/fidacy-mcp/fidacy-payment-firewall-fidacy/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for fidacy

Your own site · 80×15
<a href="https://agentmods.dev/mcp/lucaslubi/fidacy-mcp/fidacy-payment-firewall-fidacy"><img src="https://agentmods.dev/badge/mcp/lucaslubi/fidacy-mcp/fidacy-payment-firewall-fidacy.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session not measured What this adds to a session before it is invoked.
When invoked not measured Not applicable: nothing here is loaded into a session.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Security

Grade A, and why

fidacy scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 2mo ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

plugin/fidacy-payment-firewall/.mcp.json · 9 lines

What it actually says

{
  "fidacy": {
    "command": "npx",
    "args": [
      "-y",
      "@fidacy/mcp"
    ]
  }
}
Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 2mo ago First seen · 9 lines scan A 187d532f360c

Subscribe to this mod's changes

fidacy is an MCP server published in the GitHub repository lucaslubi/fidacy-mcp (1 stars, last pushed 3mo ago), licensed Apache-2.0. Its token cost is not measured: an MCP server costs its tool schemas, not its config file. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.

Finance and fintechSecurityai-agentsbitcoined25519firewallmcpmcp-server
Related

fidacy compared with mcp servers from other repositories

fidacy next to 6 mcp servers from other repositories
ModTypeStarsLast pushLicenceScanTokensWorks with
fidacylucaslubi/fidacy-mcpMCP server13mo agoApache-2.0A—Claude Code
bitcoin-mcpteamssUTXO/bitcoin_mcpMCP server65mo agoMITA—Claude Code, Codex, Cursor, Gemini CLI, OpenCode
btc-nodecariohca-ux/x402-btc-nodeMCP server04mo agoMITA—Claude Code, Codex, Cursor, Gemini CLI, OpenCode
brs-signals-mcpbrssignals/BRS-Signals-MCPMCP server11mo agononeA—Claude Code, Codex, Cursor, Gemini CLI, OpenCode
stockbit-mcpINo-xious/stockbit-mcpMCP server585d agoMITA—Claude Code
d365fo-clientmafzaal/d365fo-clientMCP server416d agoMITA—Claude Code, Codex, Cursor, Gemini CLI, OpenCode
cryptotrendsmcp-ai/Trends-MCPMCP server475d agoMITA—Claude Code, Codex, Cursor, Gemini CLI, OpenCode