TinyFn
REMOTE · API.TINYFN.IO · SCANNED SEP 25
500+ deterministic tools for AI agents: math, conversion, validation, hashing, encoding, date/time.
Available components
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
- The endpoint's TLS certificate is valid, in date, and uses a strong key. View diagnostics → Pass
- Authorisation not fully verified: no authorisation is required to call this server, and 572 tool(s) never declared a destructiveHint. The MCP spec treats an absent hint as destructive by default, so we cannot call this surface safe. See how to fix → View diagnostics → Unverified
- HTTPS is enforced; there's no plaintext access path. View diagnostics → Pass
- HSTS check failed: the Strict-Transport-Security header is absent. See how to fix → View diagnostics → Fail
- 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 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
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
claude mcp add --transport http io-tinyfn-tinyfn 'https://api.tinyfn.io/mcp/all/'
{
"mcpServers": {
"io-tinyfn-tinyfn": {
"url": "https://api.tinyfn.io/mcp/all/"
}
}
} {
"servers": {
"io-tinyfn-tinyfn": {
"type": "http",
"url": "https://api.tinyfn.io/mcp/all/"
}
}
} [mcp_servers.io-tinyfn-tinyfn] url = "https://api.tinyfn.io/mcp/all/"
{
"$schema": "https://opencode.ai/config.json",
"mcp": {
"io-tinyfn-tinyfn": {
"type": "remote",
"url": "https://api.tinyfn.io/mcp/all/",
"enabled": true
}
}
} openclaw mcp add io-tinyfn-tinyfn --url 'https://api.tinyfn.io/mcp/all/' --transport streamable-http
mcp_servers:
io-tinyfn-tinyfn:
url: "https://api.tinyfn.io/mcp/all/" {
"McpServers": {
"io-tinyfn-tinyfn": {
"Transport": "http",
"Url": "https://api.tinyfn.io/mcp/all/"
}
}
} assistant mcp add io-tinyfn-tinyfn -t streamable-http -u 'https://api.tinyfn.io/mcp/all/'
{
"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.
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
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 25 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=YE2,O=Let's Encrypt,C=US | 29 Jul 2026 | 27 Oct 2026 | ECDSA 256 | ECDSA-SHA384 | 5c17c0c59da852ae9645719d7444cf5a733 |
| SANs: api.tinyfn.io | ||||||
| CN=YE2,O=Let's Encrypt,C=US (CA) | CN=Root YE,O=ISRG,C=US | 3 Sept 2025 | 2 Sept 2028 | ECDSA 384 | ECDSA-SHA384 | 4df3b15dd6c0784c507cd37b58e6f115 |
| CN=Root YE,O=ISRG,C=US (CA) | CN=ISRG Root X2,O=Internet Security Research Group,C=US | 13 May 2026 | 2 Sept 2032 | ECDSA 384 | ECDSA-SHA384 | 872165fc34b6e5fba8add5b3705fb53a |
| CN=ISRG Root X2,O=Internet Security Research Group,C=US (CA) | CN=ISRG Root X1,O=Internet Security Research Group,C=US | 13 May 2026 | 2 Sept 2032 | ECDSA 384 | SHA256-RSA | 6c8f1dc727c7117f7baf853ac980f9cd |
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/ |
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 →
absolute_value ~25
Get the absolute value of a number.
| Name | Type | Req | Description |
|---|---|---|---|
| number | number | yes | The number |
| Name | Type | Req | Description |
|---|---|---|---|
| absolute_value | number | yes | – |
| number | number | yes | – |
No examples provided.
acres_to_hectares ~26
Convert acres to hectares.
| Name | Type | Req | Description |
|---|---|---|---|
| acres | number | yes | Area in acres |
| Name | Type | Req | Description |
|---|---|---|---|
| acres | number | yes | – |
| hectares | number | yes | – |
No examples provided.
add ~27
Add two or more numbers together.
| Name | Type | Req | Description |
|---|---|---|---|
| numbers | string | yes | Comma-separated numbers to add |
| Name | Type | Req | Description |
|---|---|---|---|
| numbers | array | yes | – |
| sum | number | yes | – |
No examples provided.
add_business_days ~41
Add business days to a date.
| Name | Type | Req | Description |
|---|---|---|---|
| days | integer | yes | Business days to add |
| start_date | string | yes | Start date (YYYY-MM-DD) |
| Name | Type | Req | Description |
|---|---|---|---|
| business_days_added | – | – | – |
| error | – | – | – |
| result_date | – | – | – |
| result_day | – | – | – |
| start_date | – | – | – |
No examples provided.
add_query_param ~45
Add a query parameter to a URL.
| Name | Type | Req | Description |
|---|---|---|---|
| key | string | yes | Parameter key |
| url | string | yes | URL to modify |
| value | string | yes | Parameter value |
| Name | Type | Req | Description |
|---|---|---|---|
| added_param | object | yes | – |
| modified | string | yes | – |
| original | string | yes | – |
No examples provided.
add_time ~76
Add time to a date.
| Name | Type | Req | Description |
|---|---|---|---|
| date | string | yes | Start date (ISO format) |
| days | integer | – | Days to add |
| hours | integer | – | Hours to add |
| minutes | integer | – | Minutes to add |
| seconds | integer | – | Seconds to add |
| weeks | integer | – | Weeks to add |
| Name | Type | Req | Description |
|---|---|---|---|
| added | – | – | – |
| code | – | – | – |
| error | – | – | – |
| original | – | – | – |
| result | – | – | – |
No examples provided.
add_time_2 ~69
Add time to a datetime.
| Name | Type | Req | Description |
|---|---|---|---|
| datetime_str | string | yes | Datetime in ISO format |
| days | integer | – | Days to add |
| hours | integer | – | Hours to add |
| minutes | integer | – | Minutes to add |
| seconds | integer | – | Seconds to add |
| Name | Type | Req | Description |
|---|---|---|---|
| added | – | – | – |
| error | – | – | – |
| original | – | – | – |
| result | – | – | – |
No examples provided.
adler32_checksum ~26
Calculate Adler-32 checksum.
| Name | Type | Req | Description |
|---|---|---|---|
| text | string | yes | Text to checksum |
| Name | Type | Req | Description |
|---|---|---|---|
| adler32 | string | yes | – |
| adler32_int | integer | yes | – |
| text | string | yes | – |
No examples provided.
analogous_colors ~34
Get analogous colors (adjacent colors on color wheel).
| Name | Type | Req | Description |
|---|---|---|---|
| hex_color | string | yes | Hex color to get analogous colors for |
| Name | Type | Req | Description |
|---|---|---|---|
| analogous | – | – | – |
| original | string | yes | – |
| split_complementary | – | – | – |
| tetradic | – | – | – |
| triadic | – | – | – |
No examples provided.
analyze_password ~24
Analyze password strength and characteristics.
| Name | Type | Req | Description |
|---|---|---|---|
| password | string | yes | Password to analyze |
| Name | Type | Req | Description |
|---|---|---|---|
| characteristics | – | yes | – |
| entropy_bits | number | yes | – |
| issues | – | yes | – |
| length | integer | yes | – |
| score | integer | yes | – |
| strength | string | yes | – |
No examples provided.
array_compact ~31
Remove falsy values (empty strings) from array.
| Name | Type | Req | Description |
|---|---|---|---|
| items | string | yes | Comma-separated items |
| Name | Type | Req | Description |
|---|---|---|---|
| compacted | array | yes | – |
| original | array | yes | – |
| removed | integer | yes | – |
No examples provided.
array_dedupe ~37
Remove duplicates from array.
| Name | Type | Req | Description |
|---|---|---|---|
| items | string | yes | Comma-separated items |
| preserve_order | boolean | – | Preserve original order |
| Name | Type | Req | Description |
|---|---|---|---|
| deduped | array | yes | – |
| duplicates_removed | integer | yes | – |
| original | array | yes | – |
No examples provided.
array_difference ~47
Get difference of two arrays (items in array1 not in array2).
| Name | Type | Req | Description |
|---|---|---|---|
| array1 | string | yes | First comma-separated array |
| array2 | string | yes | Second comma-separated array |
| Name | Type | Req | Description |
|---|---|---|---|
| array1 | array | yes | – |
| array2 | array | yes | – |
| count | integer | yes | – |
| difference | – | – | – |
| intersection | – | – | – |
| symmetric_difference | – | – | – |
| union | – | – | – |
No examples provided.
array_fill ~35
Create an array filled with a value.
| Name | Type | Req | Description |
|---|---|---|---|
| length | integer | yes | Array length |
| value | string | yes | Value to fill |
| Name | Type | Req | Description |
|---|---|---|---|
| array | array | yes | – |
| length | integer | yes | – |
| value | string | yes | – |
No examples provided.
array_first ~38
Get first n items from array.
| Name | Type | Req | Description |
|---|---|---|---|
| items | string | yes | Comma-separated items |
| n | integer | – | Number of items to get |
| Name | Type | Req | Description |
|---|---|---|---|
| array | array | yes | – |
| first | – | – | – |
| last | – | – | – |
| n | integer | yes | – |
No examples provided.
array_frequency ~25
Count frequency of each item.
| Name | Type | Req | Description |
|---|---|---|---|
| items | string | yes | Comma-separated items |
| Name | Type | Req | Description |
|---|---|---|---|
| array | array | yes | – |
| frequency | object | yes | – |
| most_common | array | yes | – |
No examples provided.
array_interleave ~38
Interleave two arrays.
| Name | Type | Req | Description |
|---|---|---|---|
| array1 | string | yes | First comma-separated array |
| array2 | string | yes | Second comma-separated array |
| Name | Type | Req | Description |
|---|---|---|---|
| array1 | array | yes | – |
| array2 | array | yes | – |
| interleaved | array | yes | – |
No examples provided.
array_intersection ~39
Get intersection of two arrays.
| Name | Type | Req | Description |
|---|---|---|---|
| array1 | string | yes | First comma-separated array |
| array2 | string | yes | Second comma-separated array |
| Name | Type | Req | Description |
|---|---|---|---|
| array1 | array | yes | – |
| array2 | array | yes | – |
| count | integer | yes | – |
| difference | – | – | – |
| intersection | – | – | – |
| symmetric_difference | – | – | – |
| union | – | – | – |
No examples provided.
array_last ~38
Get last n items from array.
| Name | Type | Req | Description |
|---|---|---|---|
| items | string | yes | Comma-separated items |
| n | integer | – | Number of items to get |
| Name | Type | Req | Description |
|---|---|---|---|
| array | array | yes | – |
| first | – | – | – |
| last | – | – | – |
| n | integer | yes | – |
No examples provided.
array_nth ~42
Get item at specific index.
| Name | Type | Req | Description |
|---|---|---|---|
| index | integer | yes | Index (0-based, negative for from end) |
| items | string | yes | Comma-separated items |
| Name | Type | Req | Description |
|---|---|---|---|
| array | array | yes | – |
| error | – | – | – |
| index | integer | yes | – |
| item | – | – | – |
| valid_range | – | – | – |
No examples provided.
array_partition ~36
Partition array into chunks of specified size.
| Name | Type | Req | Description |
|---|---|---|---|
| items | string | yes | Comma-separated items |
| size | integer | yes | Partition size |
| Name | Type | Req | Description |
|---|---|---|---|
| num_partitions | integer | yes | – |
| original | array | yes | – |
| partitions | array | yes | – |
| size | integer | yes | – |
No examples provided.
array_repeat ~35
Repeat an array n times.
| Name | Type | Req | Description |
|---|---|---|---|
| items | string | yes | Comma-separated items |
| times | integer | yes | Times to repeat |
| Name | Type | Req | Description |
|---|---|---|---|
| original | array | yes | – |
| repeated | array | yes | – |
| times | integer | yes | – |
No examples provided.
array_reverse ~23
Reverse an array.
| Name | Type | Req | Description |
|---|---|---|---|
| items | string | yes | Comma-separated items |
| Name | Type | Req | Description |
|---|---|---|---|
| original | array | yes | – |
| reversed | array | yes | – |
No examples provided.
array_rotate ~44
Rotate an array by n positions.
| Name | Type | Req | Description |
|---|---|---|---|
| items | string | yes | Comma-separated items |
| positions | integer | yes | Positions to rotate (positive=right, negative=left) |
| Name | Type | Req | Description |
|---|---|---|---|
| original | array | yes | – |
| positions | – | – | – |
| rotated | array | yes | – |
No examples provided.
array_slice ~43
Slice an array.
| Name | Type | Req | Description |
|---|---|---|---|
| end | integer | – | End index (exclusive) |
| items | string | yes | Comma-separated items |
| start | integer | – | Start index |
| Name | Type | Req | Description |
|---|---|---|---|
| end | – | – | – |
| original | array | yes | – |
| sliced | array | yes | – |
| start | integer | yes | – |
No examples provided.
array_symmetric_difference ~45
Get symmetric difference (items in either but not both).
| Name | Type | Req | Description |
|---|---|---|---|
| array1 | string | yes | First comma-separated array |
| array2 | string | yes | Second comma-separated array |
| Name | Type | Req | Description |
|---|---|---|---|
| array1 | array | yes | – |
| array2 | array | yes | – |
| count | integer | yes | – |
| difference | – | – | – |
| intersection | – | – | – |
| symmetric_difference | – | – | – |
| union | – | – | – |
No examples provided.
array_union ~38
Get union of two arrays.
| Name | Type | Req | Description |
|---|---|---|---|
| array1 | string | yes | First comma-separated array |
| array2 | string | yes | Second comma-separated array |
| Name | Type | Req | Description |
|---|---|---|---|
| array1 | array | yes | – |
| array2 | array | yes | – |
| count | integer | yes | – |
| difference | – | – | – |
| intersection | – | – | – |
| symmetric_difference | – | – | – |
| union | – | – | – |
No examples provided.
array_unzip ~41
Unzip array of pairs into two arrays.
| Name | Type | Req | Description |
|---|---|---|---|
| pairs | string | yes | JSON array of pairs, e.g., [[1,2],[3,4]] |
| Name | Type | Req | Description |
|---|---|---|---|
| array1 | – | – | – |
| array2 | – | – | – |
| code | – | – | – |
| error | – | – | – |
| pairs | – | – | – |
No examples provided.
array_zip ~37
Zip two arrays together.
| Name | Type | Req | Description |
|---|---|---|---|
| array1 | string | yes | First comma-separated array |
| array2 | string | yes | Second comma-separated array |
| Name | Type | Req | Description |
|---|---|---|---|
| array1 | array | yes | – |
| array2 | array | yes | – |
| zipped | array | yes | – |
No examples provided.
ascii_decode ~25
Convert ASCII codes to text.
| Name | Type | Req | Description |
|---|---|---|---|
| codes | string | yes | Space-separated ASCII codes |
| Name | Type | Req | Description |
|---|---|---|---|
| code | – | – | – |
| codes | – | – | – |
| decoded | – | – | – |
| error | – | – | – |
No examples provided.
ascii_encode ~25
Get ASCII codes for text.
| Name | Type | Req | Description |
|---|---|---|---|
| text | string | yes | Text to ASCII encode |
| Name | Type | Req | Description |
|---|---|---|---|
| ascii_codes | array | yes | – |
| ascii_string | string | yes | – |
| original | string | yes | – |
No examples provided.
average ~27
Calculate the average of a list of numbers.
| Name | Type | Req | Description |
|---|---|---|---|
| numbers | string | yes | Comma-separated numbers |
| Name | Type | Req | Description |
|---|---|---|---|
| average | number | yes | – |
| count | integer | yes | – |
| max | number | yes | – |
| min | number | yes | – |
| numbers | array | yes | – |
| sum | number | yes | – |
No examples provided.
base_convert ~45
Convert a number between different bases.
| Name | Type | Req | Description |
|---|---|---|---|
| from_base | integer | yes | Source base |
| number | string | yes | Number to convert |
| to_base | integer | yes | Target base |
| Name | Type | Req | Description |
|---|---|---|---|
| decimal | – | – | – |
| error | – | – | – |
| from_base | – | – | – |
| input | – | – | – |
| result | – | – | – |
| to_base | – | – | – |
No examples provided.
base64_decode ~27
Decode base64 to text.
| Name | Type | Req | Description |
|---|---|---|---|
| encoded | string | yes | Base64 string to decode |
| Name | Type | Req | Description |
|---|---|---|---|
| code | – | – | – |
| decoded | – | – | – |
| encoded | – | – | – |
| error | – | – | – |
No examples provided.
base64_encode ~30
Encode text to base64. Properly handles Unicode.
| Name | Type | Req | Description |
|---|---|---|---|
| text | string | yes | Text to encode |
| Name | Type | Req | Description |
|---|---|---|---|
| encoded | string | yes | – |
| original | string | yes | – |
No examples provided.
basic_sentiment ~26
Basic sentiment analysis using word lists.
| Name | Type | Req | Description |
|---|---|---|---|
| text | string | yes | Text to analyze |
| Name | Type | Req | Description |
|---|---|---|---|
| negative_words | array | yes | Negative words found in the text |
| positive_words | array | yes | Positive words found in the text |
| score | number | yes | Sentiment score (-1 to 1, positive = positive sentiment) |
| sentiment | string | yes | Overall sentiment: positive, negative, or neutral |
| text | string | yes | Input text (truncated to 100 chars if longer) |
No examples provided.
binary_decode ~24
Decode binary to text.
| Name | Type | Req | Description |
|---|---|---|---|
| binary | string | yes | Binary string to decode |
| Name | Type | Req | Description |
|---|---|---|---|
| binary | – | – | – |
| code | – | – | – |
| decoded | – | – | – |
| error | – | – | – |
No examples provided.
binary_encode ~24
Encode text to binary.
| Name | Type | Req | Description |
|---|---|---|---|
| text | string | yes | Text to binary encode |
| Name | Type | Req | Description |
|---|---|---|---|
| binary | string | yes | – |
| binary_no_spaces | string | yes | – |
| original | string | yes | – |
No examples provided.
binary_to_decimal ~24
Convert binary to decimal.
| Name | Type | Req | Description |
|---|---|---|---|
| binary | string | yes | Binary number string |
| Name | Type | Req | Description |
|---|---|---|---|
| binary | string | yes | – |
| decimal | integer | yes | – |
No examples provided.
blend_colors ~56
Blend two colors together.
| Name | Type | Req | Description |
|---|---|---|---|
| color1 | string | yes | First hex color |
| color2 | string | yes | Second hex color |
| weight | number | – | Blend weight (0-1, 0.5 = equal mix) |
| Name | Type | Req | Description |
|---|---|---|---|
| blended | string | yes | – |
| color1 | string | yes | – |
| color2 | string | yes | – |
| weight | number | yes | – |
No examples provided.
bounding_box ~53
Calculate bounding box around a point.
| Name | Type | Req | Description |
|---|---|---|---|
| lat | number | yes | Center latitude |
| lon | number | yes | Center longitude |
| radius | number | yes | Radius |
| unit | string | – | Unit: km or mi |
| Name | Type | Req | Description |
|---|---|---|---|
| bounding_box | – | yes | – |
| center | – | yes | – |
| radius | number | yes | – |
| unit | string | yes | – |
No examples provided.
break_even ~49
Calculate break-even point.
| Name | Type | Req | Description |
|---|---|---|---|
| cost_per_unit | number | yes | Variable cost per unit |
| fixed_costs | number | yes | Fixed costs |
| price_per_unit | number | yes | Price per unit |
| Name | Type | Req | Description |
|---|---|---|---|
| break_even_revenue | – | – | – |
| break_even_units | – | – | – |
| code | – | – | – |
| contribution_margin | – | – | – |
| cost_per_unit | – | – | – |
| error | – | – | – |
| fixed_costs | – | – | – |
| price_per_unit | – | – | – |
No examples provided.
build_url ~50
Build a URL from components.
| Name | Type | Req | Description |
|---|---|---|---|
| base | string | yes | Base URL |
| params | string | – | Query params as key=value&key2=value2 |
| path | string | – | Path to append |
| Name | Type | Req | Description |
|---|---|---|---|
| base | string | yes | – |
| params | object | yes | – |
| path | string | yes | – |
| url | string | yes | – |
No examples provided.
build_url_2 ~64
Build a URL from components.
| Name | Type | Req | Description |
|---|---|---|---|
| host | string | yes | Hostname |
| path | string | – | URL path |
| port | integer | – | Port number |
| query | string | – | Query string (without ?) |
| scheme | string | – | URL scheme |
| Name | Type | Req | Description |
|---|---|---|---|
| components | – | yes | – |
| url | string | yes | – |
No examples provided.
business_days ~46
Count business days between two dates (excluding weekends).
| Name | Type | Req | Description |
|---|---|---|---|
| end_date | string | yes | End date (YYYY-MM-DD) |
| start_date | string | yes | Start date (YYYY-MM-DD) |
| Name | Type | Req | Description |
|---|---|---|---|
| business_days | – | – | – |
| end_date | – | – | – |
| error | – | – | – |
| start_date | – | – | – |
| total_days | – | – | – |
| weekend_days | – | – | – |
No examples provided.
bytes_to_human ~28
Convert bytes to human-readable format.
| Name | Type | Req | Description |
|---|---|---|---|
| bytes_val | integer | yes | Size in bytes |
| Name | Type | Req | Description |
|---|---|---|---|
| bytes | integer | yes | – |
| gigabytes | number | yes | – |
| human_readable | string | yes | – |
| kilobytes | number | yes | – |
| megabytes | number | yes | – |
No examples provided.
calculate_age ~28
Calculate age from birthdate.
| Name | Type | Req | Description |
|---|---|---|---|
| birthdate | string | yes | Birth date (YYYY-MM-DD) |
| Name | Type | Req | Description |
|---|---|---|---|
| age_days | – | – | – |
| age_months | – | – | – |
| age_years | – | – | – |
| birthdate | – | – | – |
| code | – | – | – |
| days_until_birthday | – | – | – |
| error | – | – | – |
| next_birthday | – | – | – |
No examples provided.
calculate_age_2 ~47
Calculate age from birthdate.
| Name | Type | Req | Description |
|---|---|---|---|
| as_of | string | – | Calculate age as of date (YYYY-MM-DD) |
| birthdate | string | yes | Birthdate (YYYY-MM-DD) |
| Name | Type | Req | Description |
|---|---|---|---|
| age_months | – | – | – |
| age_years | – | – | – |
| as_of | – | – | – |
| birthdate | – | – | – |
| error | – | – | – |
| total_days | – | – | – |
| total_weeks | – | – | – |
No examples provided.
calculate_bearing ~66
Calculate bearing (direction) between two coordinates.
| Name | Type | Req | Description |
|---|---|---|---|
| lat1 | number | yes | Latitude of start point |
| lat2 | number | yes | Latitude of end point |
| lon1 | number | yes | Longitude of start point |
| lon2 | number | yes | Longitude of end point |
No output schema declared.
No examples provided.
calculate_bmi ~39
Calculate Body Mass Index (BMI).
| Name | Type | Req | Description |
|---|---|---|---|
| height_cm | number | yes | Height in centimeters |
| weight_kg | number | yes | Weight in kilograms |
| Name | Type | Req | Description |
|---|---|---|---|
| bmi | number | yes | – |
| category | string | yes | – |
| height_cm | number | yes | – |
| weight_kg | number | yes | – |
No examples provided.
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 25 September 2026. Those dates come from our own scans of the registry and the channel itself, not from anything the publisher announced.