# FHI MCP Server Security Audit (remote · polished-truth-c514.fhi-llc-1118.workers.dev)

Free payment guide and Base-USDC x402 MCP security, package, domain, and SEC tools.

- Trust score: 63/100 (medium)
- Change this week: +4
- Registry status: active
- Liveness: live
- Owner verified: no
- Last scored: 2026-10-17

## Components

- remote · `polished-truth-c514.fhi-llc-1118.workers.dev`: 63/100 (this document), [markdown](https://verifymcp.io/servers/dev-workers-fhi-llc-1118-polished-truth-c514-fhi-x402-security-tools/polished-truth-c514.md), [page](https://verifymcp.io/servers/dev-workers-fhi-llc-1118-polished-truth-c514-fhi-x402-security-tools/polished-truth-c514)

## Channel facts

- Endpoint: `https://polished-truth-c514.fhi-llc-1118.workers.dev/mcp`
- Transports: `streamable-http`
- Auth: `none`
- Version: `1.4.0`

## Trust breakdown

How this component scores in each security and reliability category. Every signal is checked automatically against the live server, and we only credit what we can confirm. Scores are 0–100 per category. Scoring method: https://verifymcp.io/docs/scoring (what has changed: https://verifymcp.io/docs/scoring/changelog)

Scored 2026-10-17.

- **Endpoint Security**: 46/100
  - The endpoint's TLS certificate is valid, in date, and uses a strong key.
  - Authorisation not fully verified: no authorisation is required to call this server, and 7 tool(s) never declared a destructiveHint. The MCP spec treats an absent hint as destructive by default, so we cannot call this surface safe.
  - HTTPS enforcement could not be verified: the plaintext port answered with HTTP 406, which proves neither a plaintext path nor enforcement.
  - HSTS check failed: the Strict-Transport-Security header is absent.
  - DNSSEC check failed: this domain isn't protected by DNSSEC.
- **Transport & Reachability**: 100/100
  - Verified streamable-http transport via a live MCP handshake.
- **Schema Quality & AI Usability**: 69/100
  - AI-judged instruction clarity (good).
  - Tool/resource definitions use about 543 tokens (~77/item across 7 items; 7 tools + 0 resources), lean.
  - Usage-examples check failed: none of the tools include examples.
- **Stability & Change Management**: 47/100
  - Stability observed for 14 of 30 days with no destabilising changes; credit accrues until the full window elapses.
- **Tool Coverage**: 67/100
  - 100% of tools have a non-trivial description (not blank, and not just the tool's name).
  - 0% of tool parameters carry a description.
- **Tool Safety**: 100/100
  - No prompt-injection markers were found in the server instructions, tool names or descriptions we captured.
  - We read all 7 captured tool definition(s), and no name or description among them implies an irreversible operation.
  - An AI judge read all 7 captured unit(s) of tool text and found none that tries to manipulate the model reading it.
- **Capabilities**: 100/100
  - Implements a supported MCP spec version (2025-11-25); the latest is 2026-07-28.

## Install

### How do I install the FHI MCP Server Security Audit server?

FHI MCP Server Security Audit is a hosted endpoint at https://polished-truth-c514.fhi-llc-1118.workers.dev/mcp, so there is nothing to install locally. Ready-made configuration for Claude, Cursor, VS Code, Codex and 5 more is on this page, copied from each client's own documentation.

### Claude

```bash
claude mcp add --transport http dev-workers-fhi-llc-1118-polished-truth-c514-fhi 'https://polished-truth-c514.fhi-llc-1118.workers.dev/mcp'
```

### Cursor

```json
{
  "mcpServers": {
    "dev-workers-fhi-llc-1118-polished-truth-c514-fhi": {
      "url": "https://polished-truth-c514.fhi-llc-1118.workers.dev/mcp"
    }
  }
}
```

### VS Code

```json
{
  "servers": {
    "dev-workers-fhi-llc-1118-polished-truth-c514-fhi": {
      "type": "http",
      "url": "https://polished-truth-c514.fhi-llc-1118.workers.dev/mcp"
    }
  }
}
```

### Codex

```toml
[mcp_servers.dev-workers-fhi-llc-1118-polished-truth-c514-fhi]
url = "https://polished-truth-c514.fhi-llc-1118.workers.dev/mcp"
```

### opencode

```json
{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "dev-workers-fhi-llc-1118-polished-truth-c514-fhi": {
      "type": "remote",
      "url": "https://polished-truth-c514.fhi-llc-1118.workers.dev/mcp",
      "enabled": true
    }
  }
}
```

### OpenClaw

```bash
openclaw mcp add dev-workers-fhi-llc-1118-polished-truth-c514-fhi --url 'https://polished-truth-c514.fhi-llc-1118.workers.dev/mcp' --transport streamable-http
```

### Hermes

```yaml
mcp_servers:
  dev-workers-fhi-llc-1118-polished-truth-c514-fhi:
    url: "https://polished-truth-c514.fhi-llc-1118.workers.dev/mcp"
```

### Netclaw

```json
{
  "McpServers": {
    "dev-workers-fhi-llc-1118-polished-truth-c514-fhi": {
      "Transport": "http",
      "Url": "https://polished-truth-c514.fhi-llc-1118.workers.dev/mcp"
    }
  }
}
```

### Vellum

```bash
assistant mcp add dev-workers-fhi-llc-1118-polished-truth-c514-fhi -t streamable-http -u 'https://polished-truth-c514.fhi-llc-1118.workers.dev/mcp'
```

### Other

```json
{
  "mcpServers": {
    "dev-workers-fhi-llc-1118-polished-truth-c514-fhi": {
      "type": "http",
      "url": "https://polished-truth-c514.fhi-llc-1118.workers.dev/mcp"
    }
  }
}
```

The mcpServers block is a cross-client convention. Remote transports vary, so check your client's docs.

## Changelog

Every change recorded for this component, newest first. Days that predate change tracking, or that we cannot explain, say so: "we were watching and nothing happened" and "we were not watching" are different claims.

### 2026-10-17 (score 63, +1)

No change was recorded against any check on this day. Stability & Change Management went from 43 to 47. That category is still filling its 30-day observation window: 13 days of observed history at the previous scan, 14 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-10-15 (score 62, +1)

No change was recorded against any check on this day. Stability & Change Management went from 37 to 40. That category is still filling its 30-day observation window: 11 days of observed history at the previous scan, 12 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-10-13 (score 61, +1)

No change was recorded against any check on this day. Stability & Change Management went from 30 to 33. That category is still filling its 30-day observation window: 9 days of observed history at the previous scan, 10 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-10-12 (score 60, +1)

No change was recorded against any check on this day. Stability & Change Management went from 23 to 30. That category is still filling its 30-day observation window: 7 days of observed history at the previous scan, 9 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-10-10 (score 59, +1)

No change was recorded against any check on this day. Stability & Change Management went from 13 to 23. That category is still filling its 30-day observation window: 4 days of observed history at the previous scan, 7 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-10-07 (score 58, +1)

- [functional regression] Schema quality: 443 → 543
- [functional] New tool “mcp_change_evidence”

### 2026-10-04 (score 57, +1)

- [functional improvement] Stability: unverified → 0.03

### 2026-10-03 (score 56)

First indexed and scored.

## MCP tools (7)

### `payment_info` (~30 tokens)

Payment & Tool Guide

Free guide to the FHI MCP tools, Base-USDC x402 payment flow, and per-tool prices.

### `domain_change_evidence` (~60 tokens)

Domain Change Evidence

Stateful DNS, CAA, and certificate-transparency monitoring for a public domain. The first call establishes a baseline; later calls return evidence changes and certificate-expiry signals. ($0.01 USDC on Base)

Input parameters:

- `domain` (string, required)

### `package_install_preflight` (~81 tokens)

Package Install Preflight

npm or PyPI install preflight: blocks missing packages, detects near-name typosquats when an expected name is supplied, and checks OSV advisories. ($0.003 USDC on Base)

Input parameters:

- `ecosystem` (string, required)
- `expectedName` (string)
- `name` (string, required)
- `version` (string)

### `sec_material_event_delta` (~67 tokens)

SEC Filing Delta

New SEC 8-K, 6-K, and late-filing evidence since a cursor date; accepts a ticker or CIK. ($0.01 USDC on Base)

Input parameters:

- `cik` (string)
- `since` (string, required)
- `ticker` (string)

### `mcp_payment_preflight` (~98 tokens)

MCP Payment & Tool Preflight

MCP server security audit before an agent connects or pays: probes initialize and tools/list, then returns an ALLOW, CAUTION, or BLOCK risk score for command, filesystem, or wallet capabilities; prompt-injection or data-exfiltration signals; permissive JSON-schema inputs; missing HSTS; and a large tool surface. Does not execute tools. ($0.01 USDC on Base)

Input parameters:

- `serverUrl` (string, required)

### `mcp_change_evidence` (~100 tokens)

Remote MCP Tool-Rug-Pull Monitor

Stateful live remote-MCP monitor for tool-rug-pull and tool-poisoning risk. Establishes an endpoint baseline, then detects added or removed tools, altered tool descriptions, risk-score changes, and newly observed high-risk capability signals before an agent reconnects or pays. Unlike a manifest diff, it fetches the live endpoint and retains the prior observation. ($0.003 USDC on Base)

Input parameters:

- `serverUrl` (string, required)

### `mcp_vendor_due_diligence` (~107 tokens)

MCP Vendor Due Diligence Dossier

One decision-ready due-diligence dossier before an agent adopts or pays an MCP vendor: live MCP metadata and tool-risk preflight, DNS/CAA/certificate evidence, plus optional SEC material-filing evidence for a public company. Does not execute vendor tools or certify safety. ($0.10 USDC on Base)

Input parameters:

- `cik` (string)
- `mcpUrl` (string, required)
- `since` (string)
- `ticker` (string)

## Diagnostics

Captured diagnostic sections: TLS, DNSSEC, Authorisation, Transports. The full working is on the page: https://verifymcp.io/servers/dev-workers-fhi-llc-1118-polished-truth-c514-fhi-x402-security-tools/polished-truth-c514#diagnostics

## Score history

- 2026-10-17: 63
- 2026-10-16: 62
- 2026-10-15: 62
- 2026-10-14: 61
- 2026-10-13: 61
- 2026-10-12: 60
- 2026-10-10: 59
- 2026-10-07: 58
- 2026-10-04: 57
- 2026-10-03: 56

## Common questions

### What is the FHI MCP Server Security Audit server?

FHI MCP Server Security Audit is listed in the public MCP registry as dev.workers.fhi-llc-1118.polished-truth-c514/fhi-x402-secur…. Free payment guide and Base-USDC x402 MCP security, package, domain, and SEC tools. This page covers its hosted endpoint (https://polished-truth-c514.fhi-llc-1118.workers.dev/mcp).

### Is the FHI MCP Server Security Audit server safe to use?

FHI MCP Server Security Audit scores 63 out of 100 on VerifyMCP. That is a record of what we were able to check automatically, not an endorsement. The category breakdown on this page shows every signal behind the number, including the ones we could not confirm.

### What tools does the FHI MCP Server Security Audit server expose?

FHI MCP Server Security Audit exposes 7 tools: payment_info, domain_change_evidence, package_install_preflight, sec_material_event_delta, mcp_payment_preflight, and 2 more. Their descriptions and schemas cost roughly 543 tokens of context every time the server is loaded.

### Does the FHI MCP Server Security Audit server require authentication?

No. We connected to FHI MCP Server Security Audit without credentials and it answered, so anything it exposes is reachable by anyone who knows the address.

### Is the FHI MCP Server Security Audit server still maintained?

FHI MCP Server Security Audit is still listed as active in the MCP registry. We last reached this channel on 17 October 2026. Those dates come from our own scans of the registry and the channel itself, not from anything the publisher announced.

## Links

- Remote endpoint: https://polished-truth-c514.fhi-llc-1118.workers.dev/mcp
- Changelog RSS feed: https://verifymcp.io/servers/dev-workers-fhi-llc-1118-polished-truth-c514-fhi-x402-security-tools/polished-truth-c514.xml
- Changelog JSON feed: https://verifymcp.io/servers/dev-workers-fhi-llc-1118-polished-truth-c514-fhi-x402-security-tools/polished-truth-c514.json
- HTML version of this page: https://verifymcp.io/servers/dev-workers-fhi-llc-1118-polished-truth-c514-fhi-x402-security-tools/polished-truth-c514