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.
Available components
Last scanned (5 hours ago)
Scores higher than 46% of remote servers
Reachable. Last reached 17 Oct 2026.
Category Security
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. How we score → Why this is hard to score →
Endpoint Security46
- The endpoint's TLS certificate is valid, in date, and uses a strong key. View diagnostics → Pass
- 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. See how to fix → View diagnostics → Unverified
- HTTPS enforcement could not be verified: the plaintext port answered with HTTP 406, which proves neither a plaintext path nor enforcement. View diagnostics → Unverified
- HSTS check failed: the Strict-Transport-Security header is absent. See how to fix → View diagnostics → Fail
- DNSSEC check failed: this domain isn't protected by DNSSEC. See how to fix → View diagnostics → Fail
Transport & Reachability100
- Verified streamable-http transport via a live MCP handshake. View diagnostics → Pass
Schema Quality & AI Usability69
- AI-judged instruction clarity (good).Pass
- Tool/resource definitions use about 543 tokens (~77/item across 7 items; 7 tools + 0 resources), lean.Pass
- Usage-examples check failed: none of the tools include examples. See how to fix → Fail
Stability & Change Management47
- Stability observed for 14 of 30 days with no destabilising changes; credit accrues until the full window elapses.Partial
Tool Coverage67
- 100% of tools have a non-trivial description (not blank, and not just the tool's name).Pass
- 0% of tool parameters carry a description.Fail
Tool Safety100
- No prompt-injection markers were found in the server instructions, tool names or descriptions we captured.Pass
- We read all 7 captured tool definition(s), and no name or description among them implies an irreversible operation.Pass
- An AI judge read all 7 captured unit(s) of tool text and found none that tries to manipulate the model reading it.Pass
Capabilities100
- Implements a supported MCP spec version (2025-11-25); the latest is 2026-07-28.Pass
Every change we have recorded for this component, newest first. Security-relevant changes are always shown. ▲ marks a change for the better, ▼ a change for the worse; unmarked changes are neutral.
- 17 Oct 26 +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.
- 15 Oct 26 +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.
- 13 Oct 26 +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.
- 12 Oct 26 +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.
- 10 Oct 26 +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.
- 7 Oct 26 +1
- Schema quality: 443 → 543 ▼ functional
- New tool “mcp_change_evidence” functional
- 4 Oct 26 +1
- Stability: unverified → 0.03 ▲ functional
- 3 Oct 26 56
First indexed and scored.
Diagnostic detail from the automated scan of this channel: what the scanner observed at each step, so you can see exactly where a check passed or failed. It is informational only and never changes the trust score.
Captured 17 Oct 2026 · Probed https://polished-truth-c514.fhi-llc-1118.workers.dev/mcp
TLS valid
Negotiated TLS 1.3 with TLS_AES_128_GCM_SHA256 .
| Subject | Issuer | Valid from | Valid until | Key | Signature | Serial |
|---|---|---|---|---|---|---|
| CN=fhi-llc-1118.workers.dev | CN=YE1,O=Let's Encrypt,C=US | 29 Sept 2026 | 28 Dec 2026 | ECDSA 256 | ECDSA-SHA384 | 501990a7ec0bc1067027edfbd7be4316b42 |
| SANs: *.fhi-llc-1118.workers.dev, fhi-llc-1118.workers.dev | ||||||
| CN=YE1,O=Let's Encrypt,C=US (CA) | CN=Root YE,O=ISRG,C=US | 3 Sept 2025 | 2 Sept 2028 | ECDSA 384 | ECDSA-SHA384 | 5ddd70dd31f801c85c186a7a04b80afe |
| CN=Root YE,O=ISRG,C=US (CA) | CN=ISRG Root X2,O=Internet Security Research Group,C=US | 13 May 2026 | 2 Sept 2032 | ECDSA 384 | ECDSA-SHA384 | 872165fc34b6e5fba8add5b3705fb53a |
| CN=ISRG Root X2,O=Internet Security Research Group,C=US (CA) | CN=ISRG Root X1,O=Internet Security Research Group,C=US | 13 May 2026 | 2 Sept 2032 | ECDSA 384 | SHA256-RSA | 6c8f1dc727c7117f7baf853ac980f9cd |
Background: What to check on a remote MCP endpoint →
DNSSEC insecure
Validation of polished-truth-c514.fhi-llc-1118.workers.dev. — Not signed
| Zone | DS | Keys | Algorithms | Outcome |
|---|---|---|---|---|
| . | trust_anchor | 20326, 38696 | 8, 8 | Verified |
| dev. | present | 60074 | 8 | Verified |
| workers.dev. | absent | Unsigned (proven) parent-signed NSEC/NSEC3 proves an unsigned delegation |
Authentication No authorisation required
The endpoint answered without asking for a token. Anyone who knows the URL can reach it.
| Result | No authorisation required |
|---|---|
| HTTP status | 200 |
Background: How OAuth 2.1 works in the 2026 MCP spec →
Transports 2 probes
| Transport | URL | Outcome | Status | Location |
|---|---|---|---|---|
| streamable-http | https://polished-truth-c514.fhi-llc-1118.workers.dev/mcp | Verified | 200 | |
| http (plaintext) | http://polished-truth-c514.fhi-llc-1118.workers.dev/mcp | Inconclusive | 406 |
The tools this component advertises to a client, with an estimated token cost for each. Expand a tool to see its parameters and schema. The per-tool counts are indicative and are not scored directly; the schema's total context footprint is one signal in Schema Quality & AI Usability. A tool's description is untrusted text the model reads on every call, which is what makes this list a security surface and not just an inventory: how tool poisoning works →
domain_change_evidence Domain Change Evidence ~60
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)
| Name | Type | Req | Description |
|---|---|---|---|
| domain | string | yes | – |
No output schema declared.
No examples provided.
mcp_change_evidence Remote MCP Tool-Rug-Pull Monitor ~100
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)
| Name | Type | Req | Description |
|---|---|---|---|
| serverUrl | string | yes | – |
No output schema declared.
No examples provided.
mcp_payment_preflight MCP Payment & Tool Preflight ~98
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)
| Name | Type | Req | Description |
|---|---|---|---|
| serverUrl | string | yes | – |
No output schema declared.
No examples provided.
mcp_vendor_due_diligence MCP Vendor Due Diligence Dossier ~107
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)
| Name | Type | Req | Description |
|---|---|---|---|
| cik | string | – | – |
| mcpUrl | string | yes | – |
| since | string | – | – |
| ticker | string | – | – |
No output schema declared.
No examples provided.
package_install_preflight Package Install Preflight ~81
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)
| Name | Type | Req | Description |
|---|---|---|---|
| ecosystem | string | yes | – |
| expectedName | string | – | – |
| name | string | yes | – |
| version | string | – | – |
No output schema declared.
No examples provided.
payment_info Payment & Tool Guide ~30
Free guide to the FHI MCP tools, Base-USDC x402 payment flow, and per-tool prices.
Input schema present but exposes no named parameters.
No output schema declared.
No examples provided.
sec_material_event_delta SEC Filing Delta ~67
New SEC 8-K, 6-K, and late-filing evidence since a cursor date; accepts a ticker or CIK. ($0.01 USDC on Base)
| Name | Type | Req | Description |
|---|---|---|---|
| cik | string | – | – |
| since | string | yes | – |
| ticker | string | – | – |
No output schema declared.
No examples provided.
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.
remote · polished-truth-c514.fhi-llc-1118.workers.dev
claude mcp add --transport http dev-workers-fhi-llc-1118-polished-truth-c514-fhi 'https://polished-truth-c514.fhi-llc-1118.workers.dev/mcp'
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.