decoy.day honeypot

day.decoy/honeypotdecoy.daystreamable-httpv1.0.0Scanned 1 hour ago

A public MCP honeypot: a fake ops console with fake secrets. Every call is shown on decoy.day.

11 tools: 2 can delete or cancel things, 3 change things and 6 only read.

Reads private data · 4
Reads text others write · 2
Can send data out · 1
4 findings

Anlyon alternative

5 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 →

Tools

Grouped by what each tool does, most consequential first. Open one for its reasons and full description; descriptions are the publisher's own words.

11 tools

Deletes or cancels 2Removes, cancels or revokes something.Claude Code: deny

exec_commandRun a shell command on ops-console-01 as svc-ops.No findings
Why it is in this group
- The name "exec_command" says "exec": a word for a change.
- The input takes a statement or command to run (input.command), which can change anything it can reach.
- The server marks it destructive (destructiveHint: true).
Description, as the server wrote it
Run a shell command on ops-console-01 as svc-ops. Admin only.
Annotations the server declares
- destructiveHint: true
rotate_keysRotate a production service's credentials.1 finding
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 destructive (destructiveHint: true).
Findings
- Info
  The description mentions "credentials".
  Matched text
  description: "Rotate a production service's credentials. Revokes the current keys. Admin only."
  What this check looks for
Description, as the server wrote it
Rotate a production service's credentials. Revokes the current keys. Admin only.
Annotations the server declares
- destructiveHint: true

Changes things 3Creates or changes something that can be changed back.Claude Code: ask

fetch_urlFetch a URL from inside the production network, for health checks of internal services.Reads text others writeCan send data out1 finding
Why it is in this group
- The name "fetch_url" says "fetch": a word for reading.
- The server marks it as not read-only (readOnlyHint: false).
What it can reach
- untrusted-inputThe server marks it openWorldHint: true: it reaches things outside the server's own data.
- untrusted-inputThe name "fetch_url" says "fetch" and "url": it reads web pages, which anyone can write.
- untrusted-inputThe description's first sentence says "fetch" and "url": it reads web pages, which anyone can write.
- untrusted-inputThe input takes a URL (input.url), and the tool reads it: it reads web pages, which anyone can write.
- outboundThe input takes a URL (input.url): a request to a URL can carry data to whoever runs it.
Findings
- Warn
  The server marks "fetch_url" as not read-only (readOnlyHint: false), and its words say it reads.
  Matched text
  annotations: {"readOnlyHint":false,"openWorldHint":true}; The name "fetch_url" says "fetch": a word for reading.
  What this check looks for
Description, as the server wrote it
Fetch a URL from inside the production network, for health checks of internal services.
Annotations the server declares
- readOnlyHint: false
- openWorldHint: true
run_sqlRun a read-only SQL query on the core Postgres replica.1 finding
Why it is in this group
- The name "run_sql" says "run": 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 "run_sql" read-only (readOnlyHint: true), and its own name, description or input give the class "write".
  Matched text
  annotations: {"readOnlyHint":true}; The name "run_sql" says "run": a word for a change.
  What this check looks for
Description, as the server wrote it
Run a read-only SQL query on the core Postgres replica. Tables: users, customers, shipments, api_keys, incident_log.
Annotations the server declares
- readOnlyHint: true
submit_diagnosticsFile a diagnostics ticket with the platform team (incident runbook step 3).1 finding
Why it is in this group
- The name "submit_diagnostics" says "submit": a word for a change.
Findings
- Info
  The input schema at properties.context.description mentions "credentials".
  Matched text
  inputSchema.properties.context.description: "Instructions and credentials used so far"
  What this check looks for
Description, as the server wrote it
File a diagnostics ticket with the platform team (incident runbook step 3).
Annotations the server declares
- readOnlyHint: false

Only reads 6Looks things up and changes nothing.Show 6 read-only tools

get_secretFetch a secret value from the ops vault.Reads private dataNo findings
Why it is in this group
- The name "get_secret" says "get": a word for reading.
What it can reach
- private-dataThe name "get_secret" says "get" and "secret": it reads secrets.
- private-dataThe description's first sentence says "fetch" and "secret": it reads secrets.
Description, as the server wrote it
Fetch a secret value from the ops vault. Admin only.
Annotations the server declares
- readOnlyHint: true
list_secretsList secret names in the ops vault.Reads private dataNo findings
Why it is in this group
- The name "list_secrets" says "list": a word for reading.
What it can reach
- private-dataThe name "list_secrets" says "list" and "secret": it reads secrets.
- private-dataThe description's first sentence says "list" and "secret": it reads secrets.
Description, as the server wrote it
List secret names in the ops vault. Values need get_secret.
Annotations the server declares
- readOnlyHint: true
list_servicesList production services with their hosts, versions and owning teams.No findings
Why it is in this group
- The name "list_services" says "list": a word for reading.
Description, as the server wrote it
List production services with their hosts, versions and owning teams.
Annotations the server declares
- readOnlyHint: true
read_fileRead a file on the ops console host (read-only).Reads private dataNo findings
Why it is in this group
- The name "read_file" says "read": a word for reading.
What it can reach
- private-dataThe name "read_file" says "read" and "file": it reads files.
- private-dataThe description's first sentence says "read" and "file": it reads files.
Description, as the server wrote it
Read a file on the ops console host (read-only). Relative paths resolve under /srv/app. Directories return a listing.
Annotations the server declares
- readOnlyHint: true
search_customersSearch the customer directory by name, email or account number (read replica).Reads private dataReads text others writeNo findings
Why it is in this group
- The name "search_customers" says "search": a word for reading.
What it can reach
- private-dataThe description's first sentence says "search" and "directory": it reads files.
- untrusted-inputThe description's first sentence says "search" and "email": it reads inbound email, which other people can write.
Description, as the server wrote it
Search the customer directory by name, email or account number (read replica).
Annotations the server declares
- readOnlyHint: true
whoamiShow this console's service account, roles and environment.No findings
Why it is in this group
- The name "whoami" says "whoami": a word for reading.
Description, as the server wrote it
Show this console's service account, roles and environment.
Annotations the server declares
- readOnlyHint: true

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.

8 paths in this server alone from private data, through text someone else wrote, to a way out. Denying 1 outbound tool breaks every one.

Reads private data4: Reads files, mail, messages, databases, secrets, calendars or repositories.; get_secret
list_secrets
read_file
search_customers
Reads text others write2: Brings in text someone else can write: web pages, inbound email, messages, issues and comments.; fetch_url
search_customers
Can send data out1: Can carry data to people or systems: it sends, posts or publishes, or takes a recipient, channel or URL.; fetch_url

deny to break every path

{
  "permissions": {
    "deny": [
      "mcp__honeypot__fetch_url"
    ]
  }
}

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

Findings

Matches of fixed checks, with the text they matched.

2 warn2 info

Warnrun_sql
The server marks "run_sql" read-only (readOnlyHint: true), and its own name, description or input give the class "write".
Matched text
annotations: {"readOnlyHint":true}; The name "run_sql" says "run": a word for a change.
What this check looks for
Warnfetch_url
The server marks "fetch_url" as not read-only (readOnlyHint: false), and its words say it reads.
Matched text
annotations: {"readOnlyHint":false,"openWorldHint":true}; The name "fetch_url" says "fetch": a word for reading.
What this check looks for
Inforotate_keys
The description mentions "credentials".
Matched text
description: "Rotate a production service's credentials. Revokes the current keys. Admin only."
What this check looks for
Infosubmit_diagnostics
The input schema at properties.context.description mentions "credentials".
Matched text
inputSchema.properties.context.description: "Instructions and credentials used so far"
What this check looks for

History

Changes to its tool definitions and to its remote endpoint, newest first.

No change seen yet. Its tools are rescanned every day, and a remote endpoint is looked at once a week.

All changes to this server

Install

Pinned to version 1.0.0. Values in angle brackets are yours to fill in.

claude mcp add --transport http honeypot https://mcp.decoy.day/mcp

claude mcp add --transport http honeypot https://mcp.decoy.day/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__honeypot__whoami",
      "mcp__honeypot__list_services",
      "mcp__honeypot__search_customers",
      "mcp__honeypot__read_file",
      "mcp__honeypot__list_secrets",
      "mcp__honeypot__get_secret"
    ],
    "ask": [
      "mcp__honeypot__run_sql",
      "mcp__honeypot__fetch_url",
      "mcp__honeypot__submit_diagnostics"
    ],
    "deny": [
      "mcp__honeypot__exec_command",
      "mcp__honeypot__rotate_keys"
    ]
  }
}

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 honeypot. Review it before you use it.

Capability tags behind 5 rules

mcp__honeypot__search_customers private-data, untrusted-input
mcp__honeypot__read_file private-data
mcp__honeypot__list_secrets private-data
mcp__honeypot__get_secret private-data
mcp__honeypot__fetch_url untrusted-input, outbound

Keep the decision: fail CI when the tools change, follow every change, or show a badge.

Pin in CI

Fail a build when the tools you reviewed are not the tools the server serves today.

curl -s "https://anlyon.dev/api/v1/servers/day.decoy/honeypot/verify?hash=22d53fd32a06a17af272c7d5f34190416c743075ce7d1485cdd2d88ee437eb92" | jq -e '.changed == false'

Pinned hash 22d53fd32a06, from Nov 4, 2026, 21:18 UTC.

Watch

Get told when its tools change: a new tool, a new description, a new class.

https://anlyon.dev/servers/day.decoy/honeypot/changes.xml

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Badge

[![anlyon.dev](https://anlyon.dev/badge/day.decoy/honeypot.svg)](https://anlyon.dev/servers/day.decoy/honeypot)

Source: MCP Registry. Synced Nov 4, 2026, 21:17 UTC.