# Calculate Medicare enrollment dates Use this when asked personal Part B start/delay questions while working or enrollment dates; no named-tool request needed. General enrollment education needs no call. Explain returned Medigap purchase protections before start/wait advice, then employer unknowns and dates. Request IEP and medigap_open_enrollment even without first Part B start. Reuse facts; omit unknowns. Employment/size alone does not establish qualifying_current_employment_coverage. Never invent enrollment, retirement or first Part B dates or turn hypotheticals into facts. Coverage starts need enrollment month; month-only birthdays need a first-day flag or eligibility month; calendars need a year. Supports age-65 IEP, IEP/GEP starts, federal Medigap, employer SEPs, creditable-drug-loss SEP, Part D gaps and annual windows. Preserve warnings/provenance. Retirement does not restart Medigap. Deadlines are not wait-until advice or birthday urgency. Verify employer coordination, Part B deferral and drug creditability separately. Two-month SEPs differ from the 63-day gap. No eligibility verification, penalties or enrollment. State/event rights, disability/ESRD and Part A retroactivity/HSA timing need separate review. Keep chat brief; choices in UI. ## Tool name `calculate_medicare_enrollment_deadlines` ## Input schema ```json { "$schema": "https://json-schema.org/draft/2020-12/schema", "type": "object", "properties": { "windows": { "minItems": 1, "maxItems": 11, "type": "array", "items": { "type": "string", "enum": [ "initial_enrollment", "initial_coverage_start", "medigap_open_enrollment", "employer_part_b_sep", "employer_plan_sep", "creditable_drug_sep", "part_d_gap", "annual_enrollment", "ma_open_enrollment", "general_enrollment", "general_coverage_start" ] }, "description": "Only the timing calculations requested by the person. Unsupported state/event rules must not be substituted with another window." }, "turns_65_on": { "description": "65th birthday as YYYY, YYYY-MM or YYYY-MM-DD, not date of birth. Do not invent missing precision.", "type": "string", "pattern": "^(19|20|21)\\d{2}(?:-(0[1-9]|1[0-2])(?:-(0[1-9]|[12]\\d|3[01]))?)?$" }, "birthday_on_first": { "description": "Only needed for a month-only 65th birthday: is the birthday on day 1? Omit if unknown.", "type": "boolean" }, "age_65_eligibility_month": { "description": "Already established age-65 Medicare eligibility month, including any first-day birthday shift. Do not infer from disability/ESRD eligibility.", "type": "string", "pattern": "^(19|20|21)\\d{2}(?:-(0[1-9]|1[0-2])(?:-(0[1-9]|[12]\\d|3[01]))?)?$" }, "enrollment_month": { "description": "Month of the actual or proposed Part B/premium-Part A application. Not a plan year.", "type": "string", "pattern": "^(19|20|21)\\d{2}(?:-(0[1-9]|1[0-2])(?:-(0[1-9]|[12]\\d|3[01]))?)?$" }, "part_b_start": { "description": "First Part B effective month; never a restart month. Used only for federal age-65 Medigap open enrollment.", "type": "string", "pattern": "^(19|20|21)\\d{2}(?:-(0[1-9]|1[0-2])(?:-(0[1-9]|[12]\\d|3[01]))?)?$" }, "calendar_year": { "description": "Explicit calendar year for recurring AEP, MA OEP or GEP dates; never default from a plan catalogue or runtime clock.", "type": "integer", "minimum": 2023, "maximum": 2198 }, "currently_in_ma": { "description": "User-reported current Medicare Advantage enrollment for MA OEP; unknown is not false.", "type": "boolean" }, "ma_oep_change_used": { "description": "Whether the person already used their one change in this annual MA OEP; omit if unknown.", "type": "boolean" }, "employer": { "description": "Only the reported employer coverage facts needed for the requested SEP.", "type": "object", "properties": { "qualifying_current_employment_coverage": { "description": "Explicitly reported qualifying group coverage based on own/spouse current employment for age-65 Part B SEP, including required coverage history. Omit if not established: still working, employer size, having employer insurance or creditable drugs alone must never be converted to true. COBRA/retiree coverage alone is not qualifying. This is not verified eligibility.", "type": "boolean" }, "employment_end": { "description": "When the qualifying employment ends or ended, not when COBRA ends.", "type": "string", "pattern": "^(19|20|21)\\d{2}(?:-(0[1-9]|1[0-2])(?:-(0[1-9]|[12]\\d|3[01]))?)?$" }, "employment_ongoing": { "description": "Explicitly still employed; omission does not mean ongoing.", "type": "boolean" }, "group_coverage_end": { "description": "When the active-employment group health plan coverage ends or ended.", "type": "string", "pattern": "^(19|20|21)\\d{2}(?:-(0[1-9]|1[0-2])(?:-(0[1-9]|[12]\\d|3[01]))?)?$" }, "group_coverage_ongoing": { "description": "Explicitly still covered under the active-employment group plan.", "type": "boolean" }, "plan_coverage_end": { "description": "End of employer/union coverage, including COBRA, for MA/Part D plan SEP; independent of Part B SEP.", "type": "string", "pattern": "^(19|20|21)\\d{2}(?:-(0[1-9]|1[0-2])(?:-(0[1-9]|[12]\\d|3[01]))?)?$" } }, "additionalProperties": false }, "drug": { "description": "Only the reported drug coverage facts needed for the requested SEP or continuous gap calculation.", "type": "object", "properties": { "involuntary_creditable_loss": { "description": "Reported involuntary loss of creditable drug coverage or change making it noncreditable.", "type": "boolean" }, "creditable_coverage_end": { "description": "Last date/month of creditable drug coverage.", "type": "string", "pattern": "^(19|20|21)\\d{2}(?:-(0[1-9]|1[0-2])(?:-(0[1-9]|[12]\\d|3[01]))?)?$" }, "loss_notice": { "description": "Notification date/month that coverage is no longer creditable; needed to account for a later notice.", "type": "string", "pattern": "^(19|20|21)\\d{2}(?:-(0[1-9]|1[0-2])(?:-(0[1-9]|[12]\\d|3[01]))?)?$" }, "uncovered_start": { "description": "First day of a reported continuous period without Part D AND without other creditable drug coverage.", "type": "string", "pattern": "^(19|20|21)\\d{2}(?:-(0[1-9]|1[0-2])(?:-(0[1-9]|[12]\\d|3[01]))?)?$" }, "coverage_resumes": { "description": "First day drug coverage resumes; excluded from uncovered-day count.", "type": "string", "pattern": "^(19|20|21)\\d{2}(?:-(0[1-9]|1[0-2])(?:-(0[1-9]|[12]\\d|3[01]))?)?$" }, "as_of": { "description": "Count an ongoing reported gap through this date, inclusive. Required if coverage_resumes is unknown.", "type": "string", "pattern": "^(19|20|21)\\d{2}(?:-(0[1-9]|1[0-2])(?:-(0[1-9]|[12]\\d|3[01]))?)?$" }, "part_d_iep_end": { "description": "Actual Part D initial enrollment period end; do not assume it equals age-65 Part A/B IEP.", "type": "string", "pattern": "^(19|20|21)\\d{2}(?:-(0[1-9]|1[0-2])(?:-(0[1-9]|[12]\\d|3[01]))?)?$" }, "eligible_throughout_gap": { "description": "Reported Part D eligibility throughout the counted gap; do not infer it from age.", "type": "boolean" }, "extra_help": { "description": "Reported Extra Help status for interpreting potential penalty exposure; never inferred.", "type": "boolean" } }, "additionalProperties": false } }, "required": [ "windows" ], "additionalProperties": false } ``` ## Example request Minimal synthetic request after initialization. A missing-input clarification is a valid result; do not invent personal facts to complete it. For content retrieval, replace the illustrative fixture ID with an ID returned by search. ```json { "jsonrpc": "2.0", "id": 3, "method": "tools/call", "params": { "name": "calculate_medicare_enrollment_deadlines", "arguments": { "windows": [ "annual_enrollment" ], "calendar_year": 2027 } } } ``` ## Connection POST JSON-RPC to https://tools.thepocketprotector.com/mcp with method `tools/call`, name `calculate_medicare_enrollment_deadlines`, and arguments matching the schema above. Call `tools/list` to verify deployed availability. ## Results and errors Read both `content` and `structuredContent`. Follow returned clarification or continuation steps. Preserve source attribution, dates, uncertainty and scope. `isError: true` means the lookup did not complete. HTTP 429 requires waiting for `Retry-After`; never repeatedly retry an unavailable lookup. ## Tool annotations ```json { "title": "Calculate Medicare enrollment dates", "readOnlyHint": true, "openWorldHint": false, "destructiveHint": false } ``` Authentication: public, no account or API key required. Public tools perform no enrollment or account writes.