FairWhere

by fairwhere.com · remote · no sign-in to list tools · v0.5.0 · published by com.fairwhere

Free London beta meetup planner. Ranks curated Placelists by journey fairness for the whole group.

Changes · 2

Compare Registry entry

6 tools: 2 change things and 4 only read.

Scanned Oct 21, 2026

Deletes or cancels0Claude Code: deny
Can't be undone0Claude Code: ask
Changes things2Claude Code: ask: see these tools
Only reads4Claude Code: allow: see these tools

1 check matched something in the tool definitions. No finding is not a safety guarantee. How the checks work.

claude mcp add --transport http fairwhere https://www.fairwhere.com/mcp

Findings

Matches of fixed checks, with the text they matched.

1 warn

Warnopen_plan_link
The server marks "open_plan_link" read-only (readOnlyHint: true), and its own name, description or input give the class "write".
Matched text
annotations: {"readOnlyHint":true,"destructiveHint":false,"idempotentHint":true,"openWorldHint":false}; The name "open_plan_link" says "open": a word for a change.
What this check looks for

Tools

Open a tool for its reasons and full description. Descriptions are the publisher's own words, shown as they are.

6 tools

Changes things 2Creates or changes something that can be changed back.Claude Code: ask

fair_shortlistRank the venues in one or more curated FairWhere Placelists by FairWhere Score for this group.Reads text others writeNo findings
Why it is in this group
- Nothing in its name or description says what it does, so it is counted as a write.
- The server marks it read-only (readOnlyHint: true), but an annotation never lowers a class.
What it can reach
- untrusted-inputThe server marks it openWorldHint: true: it reaches things outside the server's own data.
Description, as the server wrote it
Rank the venues in one or more curated FairWhere Placelists by FairWhere Score for this group. Free estimate-only path: no Google calls, no credits. Returns top venues with banded scores, per-person journey burden, score-factor breakdown, citations, and a continue_on_fairwhere link. Provide placelistIds and/or placelistSlugs (from list_placelists).
Annotations the server declares
- readOnlyHint: true
- destructiveHint: false
- idempotentHint: true
- openWorldHint: true
open_plan_linkBuild a FairWhere deep link so the group can continue the plan on FairWhere (invite people, vote, live-check journeys).1 finding
Why it is in this group
- The name "open_plan_link" says "open": a word for a change.
- The server marks it read-only (readOnlyHint: true), but an annotation never lowers a class.
Findings
- Warn
  The server marks "open_plan_link" read-only (readOnlyHint: true), and its own name, description or input give the class "write".
  Matched text
  annotations: {"readOnlyHint":true,"destructiveHint":false,"idempotentHint":true,"openWorldHint":false}; The name "open_plan_link" says "open": a word for a change.
  What this check looks for
Description, as the server wrote it
Build a FairWhere deep link so the group can continue the plan on FairWhere (invite people, vote, live-check journeys). Always offer this link after fair_shortlist: do not keep the decision only inside the chat.
Annotations the server declares
- readOnlyHint: true
- destructiveHint: false
- idempotentHint: true
- openWorldHint: false

Only reads 4Looks things up and changes nothing.Claude Code: allow

get_meet_pairReturn the published FairWhere answer for where to meet between two London neighbourhoods (winner venue, minutes, gap, top venues, citation URL).Reads text others writeNo findings
Why it is in this group
- The name "get_meet_pair" says "get": a word for reading.
What it can reach
- untrusted-inputThe description's first sentence says "return" and "url": it reads web pages, which anyone can write.
Description, as the server wrote it
Return the published FairWhere answer for where to meet between two London neighbourhoods (winner venue, minutes, gap, top venues, citation URL). Use when the user asks “where should we meet between X and Y”. Do not invent a geographic midpoint.
Annotations the server declares
- readOnlyHint: true
- destructiveHint: false
- idempotentHint: true
- openWorldHint: false
list_meet_pairsList published FairWhere pages that answer “where to meet between area A and area B” in London.No findings
Why it is in this group
- The name "list_meet_pairs" says "list": a word for reading.
Description, as the server wrote it
List published FairWhere pages that answer “where to meet between area A and area B” in London. Each row has a winner venue, minute gap, FairWhere Score, and citation URL. Prefer this over inventing a midpoint when the user names two neighbourhoods. Only status=live pages are returned.
Annotations the server declares
- readOnlyHint: true
- destructiveHint: false
- idempotentHint: true
- openWorldHint: false
list_placelistsDiscover public curated Placelists (venue collections) on FairWhere.No findings
Why it is in this group
- The name "list_placelists" says "list": a word for reading.
Description, as the server wrote it
Discover public curated Placelists (venue collections) on FairWhere. Returns id, slug, name, description, best_for, categories, venue count, and canonical URLs. Call this before fair_shortlist. If count is 0 for an activity, that activity is unavailable: refuse to invent restaurants/cocktails and pivot to available_activities.
Annotations the server declares
- readOnlyHint: true
- destructiveHint: false
- idempotentHint: true
- openWorldHint: false
pingVerify the FairWhere MCP server is reachable.No findings
Why it is in this group
- The name "ping" says "ping": a word for reading.
Description, as the server wrote it
Verify the FairWhere MCP server is reachable. Returns a greeting echoing the provided note.
Annotations the server declares
- readOnlyHint: true
- destructiveHint: false
- idempotentHint: true
- openWorldHint: false

This is not a safety rating, and no finding is not a safety guarantee. The groups and findings come from fixed checks of the tool definitions the server returned on the date shown, not from its code or what it does when called. How the checks work.

Exfil surface

Which tools read private data, which read text someone else can write, and which can send data out. One of each is a path a prompt injection can use.

No private-data, untrusted-input, outbound path in this server alone: no tool is tagged private-data or outbound.

Reads private data0: Reads files, mail, messages, databases, secrets, calendars or repositories.
Reads text others write2: Brings in text someone else can write: web pages, inbound email, messages, issues and comments.; fair_shortlist
get_meet_pair
Can send data out0: Can carry data to people or systems: it sends, posts or publishes, or takes a recipient, channel or URL.

Other servers in the same agent add their own tools to these paths. Audit your whole setup to see them together.

Remote posture

What anyone on the internet sees at the remote endpoint: an anonymous initialize and tools/list, and the public OAuth metadata.

Looked at Oct 22, 2026, 14:31 UTC, unchanged since Oct 22, 2026. No credentials were sent and no tool was called. What is looked at.

Reachable: yes
HTTP status of an anonymous initialize: 200
tools/list served without credentials: yes
Tools that change things, listed without credentials: 2
Protocol version: 2025-06-18
WWW-Authenticate on 401: not observed
resource_metadata in WWW-Authenticate: none
RFC 9728 protected resource metadata: none
Authorization servers: none
Legacy HTTP+SSE transport: no
Dynamic client registration: not observed
Client ID metadata documents: not observed

WarnThe whole server
The endpoint served tools/list without credentials, and the list has 2 tools that change things (2 write). Whether a call also works without credentials was not tested: tools are never called.
Matched text
https://www.fairwhere.com/mcp: tools/list returned 6 tools to an anonymous client, including fair_shortlist (write), open_plan_link (write)
What this check looks for

Install

Pinned to version 0.5.0. Values in angle brackets are yours to fill in.

claude mcp add --transport http fairwhere https://www.fairwhere.com/mcp

Run in a terminal.

Claude Code permissions

Allow the reads, ask before a change or a way out, deny the deletes. Paste into .claude/settings.json.

.claude/settings.json

{
  "permissions": {
    "allow": [
      "mcp__fairwhere__ping",
      "mcp__fairwhere__list_placelists",
      "mcp__fairwhere__list_meet_pairs",
      "mcp__fairwhere__get_meet_pair"
    ],
    "ask": [
      "mcp__fairwhere__fair_shortlist",
      "mcp__fairwhere__open_plan_link"
    ],
    "deny": []
  }
}

Tools that only read are allowed, tools that change things ask first, tools that delete or cancel are denied. A read that can send data out (it takes a URL, say) asks first too. It assumes the server is installed as fairwhere. Review it before you use it.

Capability tags behind 2 rules

mcp__fairwhere__fair_shortlist untrusted-input
mcp__fairwhere__get_meet_pair untrusted-input

Keep track

Get told when this server's tools change: a new tool, a new description, a new class.

https://anlyon.dev/servers/com.fairwhere/fairwhere/changes.xml

An Atom feed. Works in any feed reader or Slack's RSS app.

Anlyon alternative

2 of these tools change something. Run those as governed actions.

Declare what an action changes, and Anlyon puts it under a shared limit, binds every approval to the exact request, and grades the outcome. It works on any HTTPS API you can describe as an action.

Anlyon does not run, proxy or govern this MCP server. A tool your own code calls directly is not routed through Anlyon and is not governed by it.

Import an OpenAPI spec →

Compare with other servers for the same product.

Source: MCP Registry. Synced Oct 21, 2026, 17:54 UTC.

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