SimplyUtils

io.github.Notysoty/simplyutils-mcpNotysotystreamable-httpv1.0.0Scanned 53 minutes ago

Developer and text tools: JSON, QR codes, units, passwords, UUIDs, hashes, Base64, regex and more.

10 tools: 1 do something that can't be undone, 7 change things and 2 only read.

Reads private data · 0
Reads text others write · 0
Can send data out · 1
6 findings

Anlyon alternative

8 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.

10 tools

Can't be undone 1Sends, pays, publishes or merges: once done, it cannot be taken back.Claude Code: ask

convert_unitsConvert a value between units of the same category.Can send data out1 finding
Why it is in this group
- The name "convert_units" says "convert": a word for a change.
- The input addresses people (input.to): what it sends cannot be taken back.
- The server marks it read-only (readOnlyHint: true), but an annotation never lowers a class.
What it can reach
- outboundThe input takes a destination (input.to): what the tool writes goes there.
Findings
- Warn
  The server marks "convert_units" read-only (readOnlyHint: true), and its own name, description or input give the class "irreversible".
  Matched text
  annotations: {"readOnlyHint":true,"destructiveHint":false,"openWorldHint":false}; The name "convert_units" says "convert": a word for a change.
  What this check looks for
Description, as the server wrote it
Convert a value between units of the same category. Units (symbol or name): length: m, km, mi, ft, in, cm, mm, yd, nmi; weight: kg, g, lb, oz, t, mg, st; temperature: °C, °F, K; volume: L, mL, gal, fl oz, cup, tbsp, m³; speed: km/h, mph, m/s, kn, ft/s; area: m², km², mi², ft², ac, ha; data: B, KB, MB, GB, TB, bit, KiB, MiB, GiB, TiB; time: s, min, h, d, wk, mo, yr, ms.
Annotations the server declares
- readOnlyHint: true
- destructiveHint: false
- openWorldHint: false

Changes things 7Creates or changes something that can be changed back.Claude Code: ask

base64Encode UTF-8 text to Base64 (standard or URL-safe) or decode Base64 back to text.No 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.
Description, as the server wrote it
Encode UTF-8 text to Base64 (standard or URL-safe) or decode Base64 back to text.
Annotations the server declares
- readOnlyHint: true
- destructiveHint: false
- openWorldHint: false
convert_timestampConvert a Unix timestamp (seconds or milliseconds) or a date string to Unix seconds, milliseconds, ISO 8601, UTC and a chosen time zone.1 finding
Why it is in this group
- The name "convert_timestamp" says "convert": 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 "convert_timestamp" read-only (readOnlyHint: true), and its own name, description or input give the class "write".
  Matched text
  annotations: {"readOnlyHint":true,"destructiveHint":false,"openWorldHint":false}; The name "convert_timestamp" says "convert": a word for a change.
  What this check looks for
Description, as the server wrote it
Convert a Unix timestamp (seconds or milliseconds) or a date string to Unix seconds, milliseconds, ISO 8601, UTC and a chosen time zone.
Annotations the server declares
- readOnlyHint: true
- destructiveHint: false
- openWorldHint: false
generate_passwordGenerate random passwords with a cryptographically secure generator.1 finding
Why it is in this group
- The name "generate_password" says "generate": 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 "generate_password" read-only (readOnlyHint: true), and its own name, description or input give the class "write".
  Matched text
  annotations: {"readOnlyHint":true,"destructiveHint":false,"idempotentHint":false,"openWorldHint":false}; The name "generate_password" says "generate": a word for a change.
  What this check looks for
Description, as the server wrote it
Generate random passwords with a cryptographically secure generator. Each chosen character set appears at least once.
Annotations the server declares
- readOnlyHint: true
- destructiveHint: false
- openWorldHint: false
- idempotentHint: false
generate_qr_codeMake a static QR code for a link or text (up to 800 bytes).1 finding
Why it is in this group
- The name "generate_qr_code" says "generate": 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 "generate_qr_code" read-only (readOnlyHint: true), and its own name, description or input give the class "write".
  Matched text
  annotations: {"readOnlyHint":true,"destructiveHint":false,"openWorldHint":false}; The name "generate_qr_code" says "generate": a word for a change.
  What this check looks for
Description, as the server wrote it
Make a static QR code for a link or text (up to 800 bytes). Returns a PNG image and the SVG markup. Static codes never expire.
Annotations the server declares
- readOnlyHint: true
- destructiveHint: false
- openWorldHint: false
generate_uuidGenerate random version 4 UUIDs.1 finding
Why it is in this group
- The name "generate_uuid" says "generate": 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 "generate_uuid" read-only (readOnlyHint: true), and its own name, description or input give the class "write".
  Matched text
  annotations: {"readOnlyHint":true,"destructiveHint":false,"idempotentHint":false,"openWorldHint":false}; The name "generate_uuid" says "generate": a word for a change.
  What this check looks for
Description, as the server wrote it
Generate random version 4 UUIDs.
Annotations the server declares
- readOnlyHint: true
- destructiveHint: false
- openWorldHint: false
- idempotentHint: false
hash_textHash UTF-8 text with MD5, SHA-1, SHA-256, SHA-384 or SHA-512 and return the hex digest.No 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.
Description, as the server wrote it
Hash UTF-8 text with MD5, SHA-1, SHA-256, SHA-384 or SHA-512 and return the hex digest. MD5 and SHA-1 are for checksums only, not security.
Annotations the server declares
- readOnlyHint: true
- destructiveHint: false
- openWorldHint: false
test_regexRun a JavaScript regular expression against text and list every match with its position and capture groups (up to 200 matches, 0.5 s limit).1 finding
Why it is in this group
- The description's first verb is "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 "test_regex" read-only (readOnlyHint: true), and its own name, description or input give the class "write".
  Matched text
  annotations: {"readOnlyHint":true,"destructiveHint":false,"openWorldHint":false}; The description's first verb is "run": a word for a change.
  What this check looks for
Description, as the server wrote it
Run a JavaScript regular expression against text and list every match with its position and capture groups (up to 200 matches, 0.5 s limit).
Annotations the server declares
- readOnlyHint: true
- destructiveHint: false
- openWorldHint: false

Only reads 2Looks things up and changes nothing.Show 2 read-only tools

count_wordsCount words, characters, sentences and paragraphs in text, with an estimated reading time.No findings
Why it is in this group
- The name "count_words" says "count": a word for reading.
Description, as the server wrote it
Count words, characters, sentences and paragraphs in text, with an estimated reading time.
Annotations the server declares
- readOnlyHint: true
- destructiveHint: false
- openWorldHint: false
format_jsonValidate JSON and pretty-print or minify it, optionally sorting object keys.No findings
Why it is in this group
- The description's first verb is "validate": a word for reading.
Description, as the server wrote it
Validate JSON and pretty-print or minify it, optionally sorting object keys. Returns the error position for invalid JSON.
Annotations the server declares
- readOnlyHint: true
- destructiveHint: false
- 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 untrusted-input.

Reads private data0: Reads files, mail, messages, databases, secrets, calendars or repositories.
Reads text others write0: Brings in text someone else can write: web pages, inbound email, messages, issues and comments.
Can send data out1: Can carry data to people or systems: it sends, posts or publishes, or takes a recipient, channel or URL.; convert_units

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.

6 warn

Warngenerate_qr_code
The server marks "generate_qr_code" read-only (readOnlyHint: true), and its own name, description or input give the class "write".
Matched text
annotations: {"readOnlyHint":true,"destructiveHint":false,"openWorldHint":false}; The name "generate_qr_code" says "generate": a word for a change.
What this check looks for
Warnconvert_units
The server marks "convert_units" read-only (readOnlyHint: true), and its own name, description or input give the class "irreversible".
Matched text
annotations: {"readOnlyHint":true,"destructiveHint":false,"openWorldHint":false}; The name "convert_units" says "convert": a word for a change.
What this check looks for
Warngenerate_password
The server marks "generate_password" read-only (readOnlyHint: true), and its own name, description or input give the class "write".
Matched text
annotations: {"readOnlyHint":true,"destructiveHint":false,"idempotentHint":false,"openWorldHint":false}; The name "generate_password" says "generate": a word for a change.
What this check looks for
Warngenerate_uuid
The server marks "generate_uuid" read-only (readOnlyHint: true), and its own name, description or input give the class "write".
Matched text
annotations: {"readOnlyHint":true,"destructiveHint":false,"idempotentHint":false,"openWorldHint":false}; The name "generate_uuid" says "generate": a word for a change.
What this check looks for
Warntest_regex
The server marks "test_regex" read-only (readOnlyHint: true), and its own name, description or input give the class "write".
Matched text
annotations: {"readOnlyHint":true,"destructiveHint":false,"openWorldHint":false}; The description's first verb is "run": a word for a change.
What this check looks for
Warnconvert_timestamp
The server marks "convert_timestamp" read-only (readOnlyHint: true), and its own name, description or input give the class "write".
Matched text
annotations: {"readOnlyHint":true,"destructiveHint":false,"openWorldHint":false}; The name "convert_timestamp" says "convert": a word for a change.
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 simplyutils https://api.simplyutils.com/mcp

claude mcp add --transport http simplyutils https://api.simplyutils.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__simplyutils__format_json",
      "mcp__simplyutils__count_words"
    ],
    "ask": [
      "mcp__simplyutils__generate_qr_code",
      "mcp__simplyutils__convert_units",
      "mcp__simplyutils__generate_password",
      "mcp__simplyutils__generate_uuid",
      "mcp__simplyutils__hash_text",
      "mcp__simplyutils__base64",
      "mcp__simplyutils__test_regex",
      "mcp__simplyutils__convert_timestamp"
    ],
    "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 simplyutils. Review it before you use it.

Capability tags behind 1 rule

mcp__simplyutils__convert_units 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/io.github.Notysoty/simplyutils-mcp/verify?hash=7890a6716abd4cf213276f52c6f145a22bab3a67e620b04038060d3e684c960a" | jq -e '.changed == false'

Pinned hash 7890a6716abd, from Oct 27, 2026, 10:17 UTC.

Watch

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

https://anlyon.dev/servers/io.github.Notysoty/simplyutils-mcp/changes.xml

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Badge

[![anlyon.dev](https://anlyon.dev/badge/io.github.Notysoty/simplyutils-mcp.svg)](https://anlyon.dev/servers/io.github.Notysoty/simplyutils-mcp)

Source: MCP Registry · repository. Synced Oct 27, 2026, 10:17 UTC.