PE or Not?
REMOTE · PEORNOT.ORG
Is a US dentist, vet or eye doctor private-equity backed? Owner, PE backers and sources for each.
Available components
Last scanned (11 hours ago)
Scores higher than 57% of remote servers
Reachable. Last reached 5 Nov 2026.
Category Health and Science
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 Security80
- The endpoint's TLS certificate is valid, in date, and uses a strong key. View diagnostics → Pass
- No authorisation is required to call this server. Every tool declares its destructiveHint and none is destructive, so open access doesn't expose one. See how to fix → View diagnostics → Partial
- HTTPS is enforced; there's no plaintext access path. View diagnostics → Pass
- The HSTS (Strict-Transport-Security) header is present. View diagnostics → Pass
- 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 Usability57
- AI-judged instruction clarity (excellent).Pass
- Context-footprint check failed: tool/resource definitions use about 1337 tokens (~445/item across 3 items; 3 tools + 0 resources), over budget; trim descriptions and params. See how to fix → Fail
- Usage-examples check failed: none of the tools include examples. See how to fix → Fail
Stability & Change Management7
- Stability observed for 2 of 30 days with no destabilising changes; credit accrues until the full window elapses.Partial
Tool Coverage96
- 100% of tools have a non-trivial description (not blank, and not just the tool's name).Pass
- 89% of tool parameters carry a description.Partial
Tool Safety100
- No prompt-injection markers were found in the server instructions, tool names or descriptions we captured.Pass
- We read all 3 captured tool definition(s), and no name or description among them implies an irreversible operation.Pass
- An AI judge read all 4 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.
- 5 Nov 26 0
- The server rewrote its instructions, which are the text every model session reads security
- Schema quality: good → excellent functional
- 4 Nov 26 +1
- The server rewrote its instructions, which are the text every model session reads security
- Stability: unverified → 0.03 ▲ functional
- 3 Nov 26 70
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 5 Nov 2026 · Probed https://peornot.org/mcp/
TLS valid
Negotiated TLS 1.3 with TLS_AES_128_GCM_SHA256 .
| Subject | Issuer | Valid from | Valid until | Key | Signature | Serial |
|---|---|---|---|---|---|---|
| CN=peornot.org | CN=YR1,O=Let's Encrypt,C=US | 2 Nov 2026 | 31 Jan 2027 | RSA 2048 | SHA256-RSA | 6539142dc5457bd2291da73e96e5c839e3c |
| SANs: peornot.org | ||||||
| CN=YR1,O=Let's Encrypt,C=US (CA) | CN=Root YR,O=ISRG,C=US | 3 Sept 2025 | 2 Sept 2028 | RSA 2048 | SHA256-RSA | a20253f15f2691c05dc1ce13b9bcca4e |
| CN=Root YR,O=ISRG,C=US (CA) | CN=ISRG Root X1,O=Internet Security Research Group,C=US | 13 May 2026 | 2 Sept 2032 | RSA 4096 | SHA256-RSA | f24b6d17f9d9ad7cb1c9fea78782699f |
Background: What to check on a remote MCP endpoint →
DNSSEC insecure
Validation of peornot.org. — Not signed
| Zone | DS | Keys | Algorithms | Outcome |
|---|---|---|---|---|
| . | trust_anchor | 20326, 38696 | 8, 8 | Verified |
| org. | present | 725, 26974 | 8, 8 | Verified |
| peornot.org. | 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 |
| Header | Value |
|---|---|
| strict-transport-security | max-age=63072000 |
Background: How OAuth 2.1 works in the 2026 MCP spec →
Transports 2 probes
| Transport | URL | Outcome | Status | Location |
|---|---|---|---|---|
| streamable-http | https://peornot.org/mcp/ | Verified | 200 | |
| http (plaintext) | http://peornot.org/mcp/ | HTTPS enforced | 308 | https://peornot.org/mcp/ |
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 →
find_businesses Find businesses in an area by ownership ~366
List dentists, eye care practices, vets, dermatology or GI practices in a ZIP code, city or state, optionally filtered by ownership label. Covers requests like "dentists in Plano, TX with no PE ties" (label=no_known_pe_ties) or "PE-backed eye doctors in 75024" (label=pe_backed,lender_owned). Labels: pe_backed, lender_owned (PE-backed, now lender-controlled), corporate_owned (not PE, owned by a company), health_system_owned, group_practice (owned by its dentists/doctors, no outside investor), vc_backed, no_known_pe_ties, unconfirmed, not_labeled; aliases pe and no_pe. Returns counts by label for the area, total, a page of results (limit up to 100, then next_offset) with each one's label wording and source, and the coverage note. Dental and eye care cover every NPI-registered practice; vet, derm and GI list only the tracked groups' locations. Some listings come from clinicians' individual NPI records and aren't confirmed open.
| Name | Type | Req | Description |
|---|---|---|---|
| city | string | – | – |
| industry | string | – | dental (default), eye, vet, derm or gi. |
| label | string | – | One or more labels, comma-separated, e.g. "no_known_pe_ties" or "pe_backed,lender_owned". |
| limit | integer | – | Results per page, default 20. |
| name | string | – | Only businesses whose name contains these words. |
| offset | integer | – | Start of the page (use next_offset). |
| state | string | – | Two-letter state code or state name. Needed with city unless the city name is unique. |
| zip | string | – | 5-digit ZIP code. |
No output schema declared.
No examples provided.
get_group Who owns or backs this group? ~179
Get an owner group's ownership details: label and consumer wording, owner or PE backers and since when, PE stake (majority or minority), how it holds practices (buyout, partnership, joint venture, de novo), parent and brands, every source with its headline and date, and known locations by state. Covers questions like "who owns Heartland Dental?" or "is Aspen Dental private equity?" (brand names work).
| Name | Type | Req | Description |
|---|---|---|---|
| id | string | – | Group id from another result, e.g. "dental:heartland-dental". |
| industry | string | – | dental, eye (optometry, ophthalmology, optical), vet, derm or gi. Leave out to infer it from the name. |
| name | string | – | Group or brand name, e.g. "Heartland Dental", "MyEyeDr", "Banfield". |
No output schema declared.
No examples provided.
lookup_business Is this business PE-backed? ~256
Checks whether one specific dentist, eye doctor, vet, dermatology or GI practice is private-equity backed, from its name plus city and state or ZIP. A street address or phone number makes the match surer. Returns a status (match, multiple_matches, possible_matches, no_match, need_location), a "say" sentence in the site's label wording, and matches with label, owner group, backers, PE stake and deal model, confidence, sources (headline, link, date), coverage and a correction link.
| Name | Type | Req | Description |
|---|---|---|---|
| address | string | – | Street address, or a full address like "1476 W Buckingham Rd, Garland, TX 75040". |
| city | string | – | – |
| industry | string | – | dental, eye (optometry, ophthalmology, optical), vet, derm or gi. Leave out to infer it from the name. |
| name | string | – | Business name as the user or a map listing gives it, e.g. "Aspen Dental" or "Smile Magic of Garland". |
| phone | string | – | Phone number in any format. |
| state | string | – | Two-letter state code (TX) or state name. |
| zip | string | – | 5-digit ZIP code. |
No output schema declared.
No examples provided.
How do I install the PE or Not? MCP server?
PE or Not? is a hosted endpoint at https://peornot.org/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 · peornot.org
claude mcp add --transport http org-peornot-peornot 'https://peornot.org/mcp/'
What is the PE or Not? MCP server?
PE or Not? is an MCP server listed in the public MCP registry as org.peornot/peornot. Is a US dentist, vet or eye doctor private-equity backed? Owner, PE backers and sources for each. This page covers its hosted endpoint (https://peornot.org/mcp/).
Is the PE or Not? MCP server safe to use?
PE or Not? scores 71 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 PE or Not? MCP server expose?
PE or Not? exposes 3 tools: lookup_business, find_businesses, get_group. Their descriptions and schemas cost roughly 801 tokens of context every time the server is loaded.
Does the PE or Not? MCP server require authentication?
No. We connected to PE or Not? without credentials and it answered, so anything it exposes is reachable by anyone who knows the address.
Is the PE or Not? MCP server still maintained?
PE or Not? is still listed as active in the MCP registry. We last reached this channel on 5 November 2026. Those dates come from our own scans of the registry and the channel itself, not from anything the publisher announced.