WorkdayAPI
REMOTE · WORKDAYAPI.MIKE-TUSA.WORKERS.DEV
Business-day and public-holiday math for 29 countries: add business days, days between, holidays.
Available components
Last scanned (3 hours ago)
Scores higher than 64% of remote servers
Reachable. Last reached 24 Oct 2026.
Category Productivity and Notes
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 Security69
- The endpoint's TLS certificate is valid, in date, and uses a strong key. View diagnostics → Pass
- No authorisation is required to call this server. Every tool declares its destructiveHint and none is destructive, so open access doesn't expose one. See how to fix → View diagnostics → Partial
- HTTPS enforcement could not be verified: the plaintext port answered with HTTP 405, which proves neither a plaintext path nor enforcement. View diagnostics → Unverified
- The HSTS (Strict-Transport-Security) header is present. View diagnostics → Pass
- 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 Usability64
- AI-judged instruction clarity (good).Pass
- Context-footprint check failed: tool/resource definitions use about 1104 tokens (~220/item across 5 items; 5 tools + 0 resources), over budget; trim descriptions and params. See how to fix → Fail
- Usage-examples check failed: none of the tools include examples. See how to fix → Fail
Stability & Change Management40
- Stability observed for 12 of 30 days with no destabilising changes; credit accrues until the full window elapses.Partial
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 (100% of tools); any adoption earns full credit.Pass
Tool Safety100
- No prompt-injection markers were found in the server instructions, tool names or descriptions we captured.Pass
- We read all 5 captured tool definition(s), and no name or description among them implies an irreversible operation.Pass
- An AI judge read all 6 captured unit(s) of tool text and found none that tries to manipulate the model reading it.Pass
Capabilities100
- Implements a current MCP spec version (2026-07-28).Pass
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.
- 24 Oct 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 37 to 40. That category is still filling its 30-day observation window: 11 days of observed history at the previous scan, 12 at this one. The score rises as the window fills, whether or not the server changes.
- 22 Oct 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 30 to 33. That category is still filling its 30-day observation window: 9 days of observed history at the previous scan, 10 at this one. The score rises as the window fills, whether or not the server changes.
- 20 Oct 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 23 to 27. That category is still filling its 30-day observation window: 7 days of observed history at the previous scan, 8 at this one. The score rises as the window fills, whether or not the server changes.
- 19 Oct 26 0
- Server version: 0.2.1 → 0.2.2 functional
- 17 Oct 26 +1
- Server version: 0.2.0 → 0.2.1 functional
- 15 Oct 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 7 to 10. That category is still filling its 30-day observation window: 2 days of observed history at the previous scan, 3 at this one. The score rises as the window fills, whether or not the server changes.
- 13 Oct 26 +1
- Stability: unverified → 0.03 ▲ functional
- 12 Oct 26 67
First indexed and scored.
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 24 Oct 2026 · Probed https://workdayapi.mike-tusa.workers.dev/mcp
TLS valid
Negotiated TLS 1.3 with TLS_AES_128_GCM_SHA256 .
| Subject | Issuer | Valid from | Valid until | Key | Signature | Serial |
|---|---|---|---|---|---|---|
| CN=mike-tusa.workers.dev | CN=WE1,O=Google Trust Services,C=US | 12 Oct 2026 | 10 Jan 2027 | ECDSA 256 | ECDSA-SHA256 | f05aa95d8943eeed0e4e86dd1f6f1e02 |
| SANs: mike-tusa.workers.dev, *.mike-tusa.workers.dev | ||||||
| CN=WE1,O=Google Trust Services,C=US (CA) | CN=GTS Root R4,O=Google Trust Services LLC,C=US | 13 Dec 2023 | 20 Feb 2029 | ECDSA 256 | ECDSA-SHA384 | 7ff31977972c224a76155d13b6d685e3 |
| CN=GTS Root R4,O=Google Trust Services LLC,C=US (CA) | CN=GlobalSign Root CA,OU=Root CA,O=GlobalSign nv-sa,C=BE | 15 Nov 2023 | 28 Jan 2028 | ECDSA 384 | SHA256-RSA | 7fe530bf331343bedd821610493d8a1b |
Background: What to check on a remote MCP endpoint →
DNSSEC insecure
Validation of workdayapi.mike-tusa.workers.dev. — Not signed
| Zone | DS | Keys | Algorithms | Outcome |
|---|---|---|---|---|
| . | trust_anchor | 20326, 38696 | 8, 8 | Verified |
| dev. | present | 60074 | 8 | Verified |
| workers.dev. | 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 |
| Header | Value |
|---|---|
| strict-transport-security | max-age=31536000; includeSubDomains |
| x-content-type-options | nosniff |
| referrer-policy | strict-origin-when-cross-origin |
Background: How OAuth 2.1 works in the 2026 MCP spec →
Transports 2 probes
| Transport | URL | Outcome | Status | Location |
|---|---|---|---|---|
| streamable-http | https://workdayapi.mike-tusa.workers.dev/mcp | Verified | 200 | |
| http (plaintext) | http://workdayapi.mike-tusa.workers.dev/mcp | Inconclusive | 405 |
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 →
add_business_days Add or subtract business days from a date ~227
Add (or, with a negative number, subtract) business days to a date, skipping weekends and public holidays of the country (and region). Returns the result date and the holidays skipped. Read-only. Same engine, cache and limits as GET /v1/add.
| Name | Type | Req | Description |
|---|---|---|---|
| country | string | yes | ISO 3166-1 alpha-2 country code, e.g. US, DE, GB. See list_countries. |
| date | string | yes | Start date, YYYY-MM-DD (2020-2035). |
| days | integer | yes | Business days to add; negative counts backwards. |
| region | string | – | Optional region/state code for countries with regional holidays, e.g. DE-BY, US-CA (or just BY). |
| types | string | – | Optional holiday types that close business days: comma list of public, bank (default: public; "all" = public,bank). |
| weekend | string | – | Optional weekend days, comma list of day names like "sat,sun" (default) or "fri,sat", or "none". |
| Name | Type | Req | Description |
|---|---|---|---|
| calendar_days | integer | – | – |
| country | string | – | – |
| date | string | yes | – |
| days | integer | yes | – |
| holiday_types | array | – | – |
| region | string | – | – |
| result | string | yes | – |
| result_weekday | string | – | – |
| skipped_holidays | array | – | – |
| skipped_holidays_truncated | boolean | – | – |
| weekend | string | – | – |
No examples provided.
business_days_between Count business days between two dates ~253
Count business days between two dates in a country (and region), excluding weekends and public holidays. The end date is excluded unless inclusive is true. Returns business, weekend and holiday day counts and the holidays in the range. Read-only. Same engine, cache and limits as GET /v1/between.
| Name | Type | Req | Description |
|---|---|---|---|
| country | string | yes | ISO 3166-1 alpha-2 country code, e.g. US, DE, GB. See list_countries. |
| from | string | yes | Start date, YYYY-MM-DD (2020-2035). |
| inclusive | boolean | – | Count the end date too (default false). |
| region | string | – | Optional region/state code for countries with regional holidays, e.g. DE-BY, US-CA (or just BY). |
| to | string | yes | End date, YYYY-MM-DD (2020-2035). |
| types | string | – | Optional holiday types that close business days: comma list of public, bank (default: public; "all" = public,bank). |
| weekend | string | – | Optional weekend days, comma list of day names like "sat,sun" (default) or "fri,sat", or "none". |
| Name | Type | Req | Description |
|---|---|---|---|
| business_days | integer | yes | – |
| calendar_days | integer | – | – |
| country | string | – | – |
| from | string | yes | – |
| holiday_days | integer | – | – |
| holiday_types | array | – | – |
| holidays | array | – | – |
| holidays_truncated | boolean | – | – |
| inclusive | boolean | – | – |
| region | string | – | – |
| to | string | yes | – |
| weekend | string | – | – |
| weekend_days | integer | – | – |
No examples provided.
get_holidays List public holidays for a country and year ~171
List the public (and optionally bank/observance) holidays for one country (and region) in one year, 2020-2035, with local names, types and official source links. Read-only. Same data, cache and limits as GET /v1/holidays.
| Name | Type | Req | Description |
|---|---|---|---|
| country | string | yes | ISO 3166-1 alpha-2 country code, e.g. US, DE, GB. See list_countries. |
| region | string | – | Optional region/state code for countries with regional holidays, e.g. DE-BY, US-CA (or just BY). |
| types | string | – | Optional comma list of public, bank, observance, or "all" (default: all). |
| year | integer | yes | Year, 2020-2035. |
| Name | Type | Req | Description |
|---|---|---|---|
| count | integer | yes | – |
| country | string | yes | – |
| country_name | string | – | – |
| data_version | string | – | – |
| holidays | array | yes | – |
| notes | string | – | – |
| region | string | – | – |
| region_name | string | – | – |
| scope | string | – | – |
| sources | array | – | – |
| year | integer | yes | – |
No examples provided.
is_business_day Check whether a date is a business day ~216
Check whether a date is a business day in a country (and region), considering weekends and public holidays. Returns the reason (weekend or holiday name) plus the previous and next business days. Read-only. Same engine, cache and limits as GET /v1/is-business-day.
| Name | Type | Req | Description |
|---|---|---|---|
| country | string | yes | ISO 3166-1 alpha-2 country code, e.g. US, DE, GB. See list_countries. |
| date | string | yes | Date to check, YYYY-MM-DD (2020-2035). |
| region | string | – | Optional region/state code for countries with regional holidays, e.g. DE-BY, US-CA (or just BY). |
| types | string | – | Optional holiday types that close business days: comma list of public, bank (default: public; "all" = public,bank). |
| weekend | string | – | Optional weekend days, comma list of day names like "sat,sun" (default) or "fri,sat", or "none". |
| Name | Type | Req | Description |
|---|---|---|---|
| business_day | boolean | yes | – |
| country | string | – | – |
| date | string | yes | – |
| holiday | object | – | – |
| holiday_types | array | – | – |
| next_business_day | string | – | – |
| previous_business_day | string | – | – |
| reason | string | yes | – |
| region | string | – | – |
| weekday | string | – | – |
| weekend | string | – | – |
No examples provided.
list_countries List supported countries and regions ~40
List the supported countries (ISO codes), their regions and the supported year range. Read-only. Same data and limits as GET /v1/countries.
Input schema present but exposes no named parameters.
| Name | Type | Req | Description |
|---|---|---|---|
| count | integer | yes | – |
| countries | array | yes | – |
| data_version | string | – | – |
| years | object | – | – |
No examples provided.
How do I install the WorkdayAPI MCP server?
WorkdayAPI is a hosted endpoint at https://workdayapi.mike-tusa.workers.dev/mcp, 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 · workdayapi.mike-tusa.workers.dev
claude mcp add --transport http dev-workers-mike-tusa-workdayapi-workdayapi 'https://workdayapi.mike-tusa.workers.dev/mcp'
What is the WorkdayAPI MCP server?
WorkdayAPI is an MCP server listed in the public MCP registry as dev.workers.mike-tusa.workdayapi/workdayapi. Business-day and public-holiday math for 29 countries: add business days, days between, holidays. This page covers its hosted endpoint (https://workdayapi.mike-tusa.workers.dev/mcp).
Is the WorkdayAPI MCP server safe to use?
WorkdayAPI scores 73 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 WorkdayAPI MCP server expose?
WorkdayAPI exposes 5 tools: get_holidays, is_business_day, add_business_days, business_days_between, list_countries. Their descriptions and schemas cost roughly 907 tokens of context every time the server is loaded.
Does the WorkdayAPI MCP server require authentication?
No. We connected to WorkdayAPI without credentials and it answered, so anything it exposes is reachable by anyone who knows the address.
Is the WorkdayAPI MCP server still maintained?
WorkdayAPI is still listed as active in the MCP registry. We last reached this channel on 24 October 2026. Those dates come from our own scans of the registry and the channel itself, not from anything the publisher announced.