Atlas entry
api. oiyo. net
26 capabilities over MCP. First atlas observation.
26 tools. 2 only read. 18 only compute. 6 have no reading.◇
AI reading, beta. side-effects v1 on claude-haiku-5.5, calibrated on MCP (golden-3). Only readings above a measured precision count. Counts are tools, not calls: no tool was called.
AI readings summary · beta
The service lists 26 tools, and 20 have AI readings.
get_kr_holidays and get_kr_minimum_wage are read as read-only.
Written by code from the AI readings on this page: it groups them and says nothing they do not.
What an agent can do here
AI readings, beta · Readings on 20 of 26 MCP tools.
Moves money
0
No tool read this way.
Deletes or cancels records
0
No tool read this way.
Sends messages to people
0
No tool read this way.
Changes permissions
0
No tool read this way.
Runs code
0
No tool read this way.
Should ask a person first
0
No tool read this way.
No counted reading 6 tools No reading was counted, so any effect above is possible for them: calculate_kr_acquisition_tax, calculate_kr_property_tax, calculate_saju_astrology, check_kr_business_day, compare_vat_tax, diagnose_hug_guarantee.
What changed
First atlas observation. Atlas history
Look first
AI reading, beta: AI adds items here; it never removes one.
No tool is read as one of the six effects. A zero is a count, not a clearance.
Surfaces
5 protocols checked
| ARD | Not found | No document retrieved |
|---|---|---|
| A2A | Not found | 0 skills |
| MCP | Valid | 2026-07-28 · 26 tools · resources not advertised · prompts not advertised |
| OpenAPI | Not detected | 0 operations |
| WebMCP | Not detected | 0 declarative form tools · experimental |
Exact states and meaning
- ARDabsent
Exact state: not found · No document retrieved
The supported discovery location returned no matching document.
Not found does not prove the service exposes no such interface elsewhere.
Not observed / not fetched
- A2Aabsent
Exact state: not found · 0 skills
The supported discovery location returned no matching document.
Not found does not prove the service exposes no such interface elsewhere.
Not observed / not fetched
- MCPobserved
Exact state: valid · Revision 2026-07-28 · 26 tools · resources not advertised · prompts not advertised
A usable protocol document was retrieved and validated.
Directly observed
- OpenAPIabsent
Exact state: not detected · 0 operations
No endpoint was established from the evidence and scope that InterfaceDelta inspected.
Not detected does not prove that no endpoint exists.
Not observed / not fetched
- WebMCPabsent
Exact state: not detected · 0 declarative form tools · experimental
No named declarative WebMCP form tools were observed in the origin root HTML.
Script-registered tools and other pages are not observed, so this does not mean the site has no WebMCP tools.
Not observed / not fetched
Capabilities
Showing 26 of 26.
| Tool and inputs | ◇ AI reading, beta · confidence | ||||||
|---|---|---|---|---|---|---|---|
| Read as none of the six 20 Not a clearance. | |||||||
| dailyHours, hourlyWage, unusedDays, yearsOfService* | Computes only, changes nothing0.80 | ||||||
| |||||||
| finalValue*, initialValue*, years* | Computes only, changes nothing0.82 | ||||||
| |||||||
| acquisitionPrice*, expenses, holdingYears, houseType and 2 more | Computes only, changes nothing0.80 | ||||||
| |||||||
| annualSalary*, checkCardSpend, children, creditCardSpend and 3 more | Computes only, changes nothing0.85 | ||||||
| |||||||
| compoundingFrequency, monthlyContribution, principal*, rate* and 1 more | Computes only, changes nothing0.90 | ||||||
| |||||||
| calorific, type, usageM3* | Computes only, changes nothing0.80 | ||||||
| |||||||
| age, businessIncome, financialIncome, hasBusinessRegistration and 8 more | Computes only, changes nothing0.80 | ||||||
| |||||||
| assetValue*, debtValue, hasSpouse, hasVoluntaryReporting and 6 more | Computes only, changes nothing0.85 | ||||||
| |||||||
| expenseRate, pensionPremium, people, revenue* and 1 more | Computes only, changes nothing0.82 | ||||||
| |||||||
| birthOrder, cardChildren, creditCardSpend, creditChildren and 33 more | Computes only, changes nothing0.85 | ||||||
| |||||||
| currentRate*, elapsedMonths, incidentalCosts, loanBalance* and 2 more | Computes only, changes nothing0.80 | ||||||
| |||||||
| branch, currentDate, enlistmentDate* | Computes only, changes nothing0.80 | ||||||
| |||||||
| dependents, isAnnual, nonTaxable, salary* | Computes only, changes nothing0.86 | ||||||
| |||||||
| holidayHours8orLess, holidayHoursOver8, hourlyWage*, nightHours and 1 more | Computes only, changes nothing0.84 | ||||||
| |||||||
| annualBonus, annualLeaveAllowance, endDate*, startDate* and 2 more | Computes only, changes nothing0.84 | ||||||
| |||||||
| age*, hours, period*, wage* | Computes only, changes nothing0.80 | ||||||
| |||||||
| completedScheduledDays, employedWholeWeek, hourlyWage*, hours* and 1 more | Computes only, changes nothing0.85 | ||||||
| |||||||
| from*, to*, value* | Computes only, changes nothing0.86 | ||||||
| |||||||
| year* | Reads only0.80 | ||||||
| |||||||
| year | Reads only0.90 | ||||||
| |||||||
| No counted reading 6 No reading was counted, so any effect is possible. | |||||||
| houses, over85, price*, regulated and 2 more | unknown | unknown | unknown | unknown | unknown | unknown | No reading |
| |||||||
| officialPrice*, oneHouse, taxYear, urbanArea | unknown | unknown | unknown | unknown | unknown | unknown | No reading |
| |||||||
| day*, hour, isLeapMonth, isLunar and 3 more | unknown | unknown | unknown | unknown | unknown | unknown | No reading |
| |||||||
| date* | unknown | unknown | unknown | unknown | unknown | unknown | No reading |
| |||||||
| industryType, purchase, revenue* | unknown | unknown | unknown | unknown | unknown | unknown | No reading |
| |||||||
| discountType, jeonseDeposit*, officialPrice*, propertyType and 2 more | unknown | unknown | unknown | unknown | unknown | unknown | No reading |
| |||||||
Read as this effect No reading: unknown Not read as this effect◇ AI readings, beta. A zero is a count, not a clearance.
Not observed in this Passport: A2A skills, MCP resources, MCP prompts, OpenAPI operations.
The atlas shows each capability by its plain identifier, inputs and declared sign-in. Publisher descriptions, paths, links and source evidence are not published here.
The comparison with the previous observation is shown only to the account that recorded it.
Atlas history
1 observation
- 26 capabilities · MCP 2026-07-28 · MCP endpoint validFirst observation
Fingerprint and versions
- Fingerprint
3023010f985c2d528487b5a922abe0a5a07a8574d825aa1921adce8a00e8a8ef- Passport schema
- 0.5.0, passport-semantic-v4
- Consistency
- MCP_PROMPTS_ADVERTISEMENT_LIST: not applicable · MCP_RESOURCES_ADVERTISEMENT_LIST: not applicable · MCP_TOOLS_ADVERTISEMENT_LIST: match · OPENAPI_MCP_EXPLICIT_MAPPING: not applicable
Each class compares an observation with the previous atlas observation. Runs of unchanged observations are grouped. Struck values are what the previous observation recorded; inserted values are what this one recorded.
Declared and observed
26 tools declare hints; the AI readings agree with all 20 that have a reading.
A disagreement is not a finding about the service: either side can be wrong. How we compare declarations and readings.
About this entry
io.github.yuli3/oiyo-calculationsListedOfficial MCP Registry · first listed 10 Nov 2026 · last listed 10 Nov 2026
Passive observations of a public interface listed in the Official MCP Registry. An observation does not verify security, ownership or compliance, and InterfaceDelta assigns no scores or rankings. Methodology · Report an inaccuracy · Ask for removal
Identity and snapshot
- Target key
sha256:be034929873552cd6050ef05649f33cd80df3bfbc1c4a52b92a6a69a66889198- Locator SHA-256
54d0eb7e2bbce85528ec5af8018890bc868c15ac1f26c3d53cce7b4abe3dc833- Snapshot generated
- 11 Nov 2026, 22:36 UTC
The entry is one exact observed target, not a real-world service identity, and implies no ownership. Endpoint paths are not published; the locator hash lets an operator confirm their own URL.

