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TinyFn

REMOTE · API.TINYFN.IO · SCANNED SEP 26

500+ deterministic tools for AI agents: math, conversion, validation, hashing, encoding, date/time.

Available components

0 this week 75 Trust /100
Trust breakdown (7 categories)

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 Security57
Transport & Reachability100
Schema Quality & AI Usability74
  • AI-judged instruction clarity (good).Pass
  • Tool/resource definitions use about 20780 tokens (~36/item across 572 items; 572 tools + 0 resources), lean.Pass
  • Usage-examples check failed: none of the tools include examples. See how to fix → Fail
Stability & Change Management100
  • No destabilizing schema changes in the last 30 days.Pass
Tool Coverage100
  • 100% of tools have a non-trivial description (not blank, and not just the tool's name).Pass
  • 100% of tool parameters carry a description.Pass
  • Structured output schemas are declared (96% of tools); any adoption earns full credit.Pass
Tool Safety50
  • No prompt-injection markers were found in the server instructions, tool names or descriptions we captured.Pass
  • 0 of 9 tool(s) whose name or description implies an irreversible operation declare an MCP destructiveHint annotation; "truncate" implies "truncate" and declares no destructiveHint at all, which the MCP spec reads as destructive by default. See how to fix → Fail
  • Manipulation not yet verified: only 564 of 573 captured unit(s) of tool text has been judged so far, so we will not certify text no model has read as clean.Unverified
Capabilities100
  • Implements a supported MCP spec version (2025-11-25); the latest is 2026-07-28.Pass
Install

How do I install the TinyFn MCP server?

TinyFn is a hosted endpoint at https://api.tinyfn.io/mcp/all/, 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 · api.tinyfn.io

# add to Claude Code
claude mcp add --transport http io-tinyfn-tinyfn 'https://api.tinyfn.io/mcp/all/'
// .cursor/mcp.json
{
  "mcpServers": {
    "io-tinyfn-tinyfn": {
      "url": "https://api.tinyfn.io/mcp/all/"
    }
  }
}
// .vscode/mcp.json
{
  "servers": {
    "io-tinyfn-tinyfn": {
      "type": "http",
      "url": "https://api.tinyfn.io/mcp/all/"
    }
  }
}
# ~/.codex/config.toml
[mcp_servers.io-tinyfn-tinyfn]
url = "https://api.tinyfn.io/mcp/all/"
// opencode.json
{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "io-tinyfn-tinyfn": {
      "type": "remote",
      "url": "https://api.tinyfn.io/mcp/all/",
      "enabled": true
    }
  }
}
# add to OpenClaw
openclaw mcp add io-tinyfn-tinyfn --url 'https://api.tinyfn.io/mcp/all/' --transport streamable-http
# ~/.hermes/config.yaml
mcp_servers:
  io-tinyfn-tinyfn:
    url: "https://api.tinyfn.io/mcp/all/"
// ~/.netclaw/config/netclaw.json
{
  "McpServers": {
    "io-tinyfn-tinyfn": {
      "Transport": "http",
      "Url": "https://api.tinyfn.io/mcp/all/"
    }
  }
}
# add to Vellum
assistant mcp add io-tinyfn-tinyfn -t streamable-http -u 'https://api.tinyfn.io/mcp/all/'
// mcp.json
{
  "mcpServers": {
    "io-tinyfn-tinyfn": {
      "type": "http",
      "url": "https://api.tinyfn.io/mcp/all/"
    }
  }
}

The mcpServers block is a cross-client convention. Remote transports vary, so check your client's docs.

Changelog

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.

  • 25 Sept 26 0
    • We updated how we score, so this day's move reflects our rubric, not a change to the server See what changed → functional
  • 26 Aug 26 0
    • We updated how we score, so this day's move reflects our rubric, not a change to the server See what changed → functional
  • 11 Aug 26 0
    • We updated how we score, so this day's move reflects our rubric, not a change to the server See what changed → functional
  • 7 Aug 26 0
    • The server no longer declares the “experimental” capability functional
  • 31 Jul 26 0
    • We updated how we score, so this day's move reflects our rubric, not a change to the server See what changed → functional
  • 30 Jul 26 0
    • We updated how we score, so this day's move reflects our rubric, not a change to the server See what changed → functional
  • 28 Jul 26 0
    • Stability: unverified → 0.03 ▲ functional
  • 27 Jul 26 0
    • We updated how we score, so this day's move reflects our rubric, not a change to the server See what changed → functional
Diagnostics

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 26 Sept 2026 · Probed https://api.tinyfn.io/mcp/all/

TLS valid

Negotiated TLS 1.3 with TLS_AES_128_GCM_SHA256 .

Subject Issuer Valid from Valid until Key Signature Serial
CN=api.tinyfn.io CN=YR2,O=Let's Encrypt,C=US 25 Sept 2026 24 Dec 2026 RSA 2048 SHA256-RSA 54eb566768cb74f3218eec54aa7ad821182
SANs: api.tinyfn.io
CN=YR2,O=Let's Encrypt,C=US (CA) CN=Root YR,O=ISRG,C=US 3 Sept 2025 2 Sept 2028 RSA 2048 SHA256-RSA 4ebd24947e24d394802d84a52fd5b319
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 api.tinyfn.io. — Not signed

Zone DS Keys Algorithms Outcome
. trust_anchor 20326, 38696 8, 8 Verified
io. present 57355 8 Verified
tinyfn.io. 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://api.tinyfn.io/mcp/all/ Verified 200
http (plaintext) http://api.tinyfn.io/mcp/all/ HTTPS enforced 301 https://api.tinyfn.io/mcp/all/
MCP tools · 572 exposed · ~20,637 tokens

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 →

Tool Tokens
prettify_json ~54

Prettify (format) a JSON string.

NameTypeReqDescription
indentinteger–Indentation spaces
json_stringstringyesJSON string to prettify
sort_keysboolean–Sort keys alphabetically
NameTypeReqDescription
error–––
original_length–––
prettified–––
prettified_length–––
valid–––

No examples provided.

prime_factors ~27

Get prime factors of a number.

NameTypeReqDescription
numberintegeryesNumber to factorize
NameTypeReqDescription
is_primebooleanyes–
numberintegeryes–
prime_factorsarrayyes–
unique_factorsobjectyes–

No examples provided.

primes_in_range ~37

Get all prime numbers in a range.

NameTypeReqDescription
endintegeryesEnd of range
startintegeryesStart of range
NameTypeReqDescription
count–––
end–––
error–––
primes–––
start–––

No examples provided.

private_ip_ranges ~19

Get RFC 1918 private IP address ranges.

Input schema present but exposes no named parameters.

NameTypeReqDescription
link_local–yes–
loopback–yes–
private_rangesarrayyes–

No examples provided.

punycode_decode ~29

Decode Punycode to Unicode.

NameTypeReqDescription
encodedstringyesPunycode to decode
NameTypeReqDescription
code–––
decoded–––
error–––
punycode–––

No examples provided.

punycode_encode ~34

Encode Unicode to Punycode (for internationalized domain names).

NameTypeReqDescription
textstringyesUnicode text to encode
NameTypeReqDescription
code–––
error–––
original–––
punycode–––

No examples provided.

query_string_to_json ~34

Convert a URL query string to JSON object.

NameTypeReqDescription
query_stringstringyesQuery string to convert (without ?)
NameTypeReqDescription
json–––
json_string–––

No examples provided.

rad_to_deg ~24

Convert radians to degrees.

NameTypeReqDescription
radiansnumberyesAngle in radians
NameTypeReqDescription
degreesnumberyes–
radiansnumberyes–

No examples provided.

random_address ~54

Generate random address(es) using Faker with locale support.

NameTypeReqDescription
countinteger–Number of addresses to generate
locale––Locale (e.g., en_US, en_GB, de_DE, ja_JP)
NameTypeReqDescription
count–––
locale–––
value–––
values–––

No examples provided.

random_boolean ~48

Generate random boolean value(s).

NameTypeReqDescription
countinteger–Number of booleans to generate
true_weightnumber–Probability of True (0.0 to 1.0)
NameTypeReqDescription
count–––
false_count–––
true_count–––
true_weight–––
value–––
values–––

No examples provided.

random_bytes ~39

Generate cryptographically secure random bytes.

NameTypeReqDescription
encodingstring–Output encoding: hex, base64
lengthinteger–Number of bytes
NameTypeReqDescription
bytesintegeryes–
encodingstringyes–
valuestringyes–

No examples provided.

random_bytes_2 ~46

Generate cryptographically secure random bytes.

NameTypeReqDescription
formatstring–Output format: hex, base64, urlsafe
lengthinteger–Number of bytes to generate
NameTypeReqDescription
bytesintegeryes–
formatstringyes–
securebooleanyes–
valuestringyes–

No examples provided.

random_card ~43

Draw random playing card(s) from a deck.

NameTypeReqDescription
countinteger–Number of cards to draw
include_jokersboolean–Include joker cards
NameTypeReqDescription
card–––
cards–––
count–––

No examples provided.

random_choice ~59

Pick random item(s) from a list.

NameTypeReqDescription
allow_duplicatesboolean–Allow same item to be chosen multiple times
countinteger–Number of choices to make
itemsstringyesComma-separated items to choose from

No output schema declared.

No examples provided.

random_coin ~44

Flip a coin (optionally biased).

NameTypeReqDescription
biasnumber–Probability of heads (0.5 = fair coin)
countinteger–Number of coin flips
NameTypeReqDescription
bias–––
count–––
flips–––
heads–––
heads_percent–––
result–––
tails–––

No examples provided.

random_color ~13

Generate a random color.

Input schema present but exposes no named parameters.

NameTypeReqDescription
hexstringyes–
rgb–yes–
rgb_stringstringyes–

No examples provided.

random_color_2 ~45

Generate random color(s).

NameTypeReqDescription
countinteger–Number of colors to generate
formatstring–Output format: hex, rgb, hsl, rgba
NameTypeReqDescription
count–––
format–––
value–––
values–––

No examples provided.

random_company ~48

Generate random company name(s) using Faker.

NameTypeReqDescription
countinteger–Number of companies to generate
locale––Locale (e.g., en_US, ja_JP, de_DE)
NameTypeReqDescription
count–––
locale–––
value–––
values–––

No examples provided.

random_compliment ~25

Generate a random compliment.

NameTypeReqDescription
namestring–Name to compliment
NameTypeReqDescription
complimentstringyes–
namestringyes–

No examples provided.

random_coordinates ~52

Generate random geographic coordinates.

NameTypeReqDescription
countinteger–Number of coordinate pairs to generate
decimalsinteger–Decimal precision
region––Region: us, eu, asia, or null for worldwide
NameTypeReqDescription
count–––
region–––
value–––
values–––

No examples provided.

random_credit_card ~54

Generate random credit card details (fake, for testing only).

NameTypeReqDescription
countinteger–Number of cards to generate
type––Card type: visa, mastercard, amex, discover, or null for random
NameTypeReqDescription
count–––
disclaimer–––
value–––
values–––

No examples provided.

random_date ~72

Generate random date(s) within a range.

NameTypeReqDescription
countinteger–Number of dates to generate
endstring–End date (YYYY-MM-DD)
formatstring–Output format: iso, us, eu, unix
startstring–Start date (YYYY-MM-DD)
NameTypeReqDescription
code–––
count–––
end–––
error–––
format–––
start–––
value–––
values–––

No examples provided.

random_dice ~40

Roll dice with configurable sides.

NameTypeReqDescription
countinteger–Number of dice to roll
sidesinteger–Number of sides on the die
NameTypeReqDescription
averagenumberyes–
countintegeryes–
maxintegeryes–
minintegeryes–
rollsarrayyes–
sidesintegeryes–
sumintegeryes–

No examples provided.

random_element ~26

Get random chemical element(s).

NameTypeReqDescription
countinteger–Number of elements to pick
NameTypeReqDescription
count–––
element–––
elements–––

No examples provided.

random_email ~72

Generate random email address(es) using Faker.

NameTypeReqDescription
countinteger–Number of emails to generate
domain––Specific domain (e.g., 'example.com')
locale––Locale for name-based emails
safeboolean–Use safe domains (example.com, etc.) vs realistic domains
NameTypeReqDescription
count–––
locale–––
value–––
values–––

No examples provided.

random_emoji ~44

Get random emoji(s).

NameTypeReqDescription
categorystring–Category: faces, animals, food, nature, objects, all
countinteger–Number of emojis
NameTypeReqDescription
available–––
category–––
combined–––
emojis–––
error–––

No examples provided.

random_emoji_2 ~49

Get random emoji(s).

NameTypeReqDescription
category––Category: faces, animals, food, nature, objects, or null for all
countinteger–Number of emojis to pick
NameTypeReqDescription
category–––
count–––
emoji–––
emojis–––

No examples provided.

random_excuse ~28

Generate a random excuse.

NameTypeReqDescription
contextstring–Context: work, school, social
NameTypeReqDescription
contextstringyes–
excusestringyes–

No examples provided.

random_float ~54

Generate random float(s).

NameTypeReqDescription
countinteger–How many numbers to generate
decimalsinteger–Decimal places
max_valnumber–Maximum value
min_valnumber–Minimum value
NameTypeReqDescription
count–––
maxnumberyes–
minnumberyes–
number–––
numbers–––

No examples provided.

random_float_2 ~60

Generate random floating-point number(s).

NameTypeReqDescription
countinteger–Number of floats to generate
decimalsinteger–Number of decimal places
max_valnumber–Maximum value
min_valnumber–Minimum value
NameTypeReqDescription
count–––
decimals–––
max–––
min–––
value–––
values–––

No examples provided.

random_gaussian ~67

Generate random number(s) from a Gaussian (normal) distribution.

NameTypeReqDescription
countinteger–Number of values to generate
decimalsinteger–Decimal places
meannumber–Mean (center) of the distribution
std_devnumber–Standard deviation
NameTypeReqDescription
count–––
mean–––
std_dev–––
value–––
values–––

No examples provided.

random_hex ~60

Generate random hexadecimal string(s).

NameTypeReqDescription
countinteger–Number of hex strings to generate
lengthinteger–Number of hex characters
prefixboolean–Include 0x prefix
uppercaseboolean–Use uppercase letters
NameTypeReqDescription
count–––
length–––
value–––
values–––

No examples provided.

random_integer ~71

Generate random integer(s) within a range.

NameTypeReqDescription
countinteger–Number of integers to generate
max_valinteger–Maximum value (inclusive)
min_valinteger–Minimum value (inclusive)
uniqueboolean–Ensure all values are unique (count must be <= range)
NameTypeReqDescription
code–––
count–––
error–––
max–––
min–––
value–––
values–––

No examples provided.

random_ip ~58

Generate random IP address(es).

NameTypeReqDescription
countinteger–Number of IPs to generate
privateboolean–Generate private IPs only (v4 only)
versioninteger–IP version: 4 or 6
NameTypeReqDescription
count–––
value–––
values–––
version–––

No examples provided.

random_job ~48

Generate random job title(s) using Faker.

NameTypeReqDescription
countinteger–Number of job titles to generate
locale––Locale (e.g., en_US, fr_FR, de_DE)
NameTypeReqDescription
count–––
locale–––
value–––
values–––

No examples provided.

random_mac ~50

Generate random MAC address(es).

NameTypeReqDescription
countinteger–Number of MAC addresses to generate
separatorstring–Separator: :, -, or none
uppercaseboolean–Use uppercase letters
NameTypeReqDescription
count–––
separator–––
value–––
values–––

No examples provided.

random_name ~94

Generate random name(s) using Faker with locale support.

NameTypeReqDescription
countinteger–Number of names to generate
gender––Gender hint: male, female, or null for random
locale––Locale (e.g., en_US, es_ES, ja_JP, zh_CN, fr_FR, de_DE)
typestring–Name type: first, last, full, prefix, suffix
NameTypeReqDescription
count–––
locale–––
type–––
value–––
values–––

No examples provided.

random_number ~49

Generate random integer(s).

NameTypeReqDescription
countinteger–How many numbers to generate
max_valinteger–Maximum value (inclusive)
min_valinteger–Minimum value (inclusive)
NameTypeReqDescription
count–––
maxintegeryes–
minintegeryes–
number–––
numbers–––

No examples provided.

random_password ~93

Generate secure random password(s).

NameTypeReqDescription
countinteger–Number of passwords to generate
exclude_ambiguousboolean–Exclude ambiguous characters (0O1lI)
lengthinteger–Password length
lowercaseboolean–Include lowercase letters
numbersboolean–Include numbers
symbolsboolean–Include symbols
uppercaseboolean–Include uppercase letters
NameTypeReqDescription
code–––
count–––
entropy_bits–––
error–––
length–––
value–––
values–––

No examples provided.

random_person ~68

Generate complete random person profile(s) using Faker.

NameTypeReqDescription
countinteger–Number of people to generate
gender––Gender hint: male, female, or null for random
locale––Locale (e.g., en_US, es_ES, ja_JP, zh_CN)
NameTypeReqDescription
count–––
locale–––
value–––
values–––

No examples provided.

random_phone ~61

Generate random phone number(s) using Faker with locale-appropriate formats.

NameTypeReqDescription
countinteger–Number of phone numbers to generate
locale––Locale for phone format (e.g., en_US, en_GB, de_DE, ja_JP)
NameTypeReqDescription
count–––
locale–––
value–––
values–––

No examples provided.

random_shuffle ~29

Randomly shuffle a list of items.

NameTypeReqDescription
itemsstringyesComma-separated items to shuffle
NameTypeReqDescription
countintegeryes–
originalarrayyes–
shuffledarrayyes–

No examples provided.

random_string ~56

Generate random string(s).

NameTypeReqDescription
charsetstring–Character set: alphanumeric, alpha, numeric, hex, base64
countinteger–How many strings to generate
lengthinteger–Length of string
NameTypeReqDescription
charsetstringyes–
count–––
lengthintegeryes–
string–––
strings–––

No examples provided.

random_string_2 ~72

Generate random string(s) from specified character set.

NameTypeReqDescription
charsetstring–Character set: alphanumeric, alpha, numeric, lowercase, uppercase, hex, base64, ascii, symbols
countinteger–Number of strings to generate
lengthinteger–Length of the string
NameTypeReqDescription
charset–––
count–––
length–––
value–––
values–––

No examples provided.

random_text ~62

Generate random text using Faker.

NameTypeReqDescription
countinteger–Number of items (words, sentences, or paragraphs)
locale––Locale for text generation
typestring–Type: word, words, sentence, sentences, paragraph, paragraphs, text
NameTypeReqDescription
localestringyes–
typestringyes–
value–yes–

No examples provided.

random_time ~59

Generate random time(s) of day.

NameTypeReqDescription
countinteger–Number of times to generate
formatstring–Output format: 24h, 12h, iso
include_secondsboolean–Include seconds in output
NameTypeReqDescription
count–––
format–––
value–––
values–––

No examples provided.

random_trivia ~15

Get a random trivia fact.

Input schema present but exposes no named parameters.

NameTypeReqDescription
categorystringyes–
factstringyes–

No examples provided.

random_url ~28

Generate random URL(s) using Faker.

NameTypeReqDescription
countinteger–Number of URLs to generate
NameTypeReqDescription
count–––
value–––
values–––

No examples provided.

random_username ~37

Generate random username(s) using Faker.

NameTypeReqDescription
countinteger–Number of usernames to generate
locale––Locale for username style
NameTypeReqDescription
count–––
locale–––
value–––
values–––

No examples provided.

random_uuid ~40

Generate random UUID(s).

NameTypeReqDescription
countinteger–Number of UUIDs to generate
versioninteger–UUID version (1 or 4)
NameTypeReqDescription
count–––
value–––
values–––
version–––

No examples provided.

Common questions

What is the TinyFn MCP server?

TinyFn is an MCP server listed in the public MCP registry as io.tinyfn/tinyfn. 500+ deterministic tools for AI agents: math, conversion, validation, hashing, encoding, date/time. This page covers its hosted endpoint (https://api.tinyfn.io/mcp/all/).

Is the TinyFn MCP server safe to use?

TinyFn scores 75 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 TinyFn MCP server expose?

TinyFn exposes 572 tools: is_even, is_odd, is_prime, is_positive, is_negative, and 567 more. Their descriptions and schemas cost roughly 20,637 tokens of context every time the server is loaded.

Does the TinyFn MCP server require authentication?

No. We connected to TinyFn without credentials and it answered, so anything it exposes is reachable by anyone who knows the address.

Is the TinyFn MCP server still maintained?

TinyFn is still listed as active in the MCP registry. We last reached this channel on 26 September 2026. Those dates come from our own scans of the registry and the channel itself, not from anything the publisher announced.