settlement_date
PAID ($0.05). Settlement/value date: the date n business days after a trade date, computed on the INTERSECTION of the calendars you name, with a per-day trail showing every skipped day and why, on which calendar. Supply business_days for a cycle you are trading under, or market + instrument_class to have a settlement cycle applied that we cite to its primary source (e.g. US equities T+1 under 17 CFR 240.15c6-1(a); UK gilts T+1 by DMO convention, which is NOT the T+2 equity cycle; Japan equities T+2 but JGBs T+1). Calendars are NATIONAL statutory holiday calendars with researched statutory weekend rules (Israel Saturday-only, Gulf Friday+Saturday, India Sundays plus the 2nd and 4th Saturday), NOT CSD or exchange calendars — each response states the basis and any known divergence. Use 'eu.t2' for the euro cash leg. We refuse FREE rather than guess: beyond published calendar coverage, no cited cycle for the instrument (government bonds never inherit an equity cycle), a cycle not in force on the trade date, or FX spot value dates. Free companion: GET /settlement-conventions. Optional receipt (boolean, default false): on a paid success, include an Ed25519 answer receipt at no extra USDC. An answer receipt is not a series certified extract (GET /v1/certified/{country}/{series} is $0.25 and is not an MCP tool) and is not legal advice. Verify with verify_answer_receipt against /certified/public-key.
Input Schema
| Name | Required | Description | Default |
|---|---|---|---|
| market | No | ISO country of the market whose cited cycle should apply (with instrument_class) | |
| api_key | No | API key (bypasses x402; metered for invoicing) | |
| receipt | No | Default false. When true, a paid success includes an Ed25519 answer receipt (kind answer_receipt) at no extra USDC. Unpaid 402 and free refusals do not include one. Not a series certified extract (GET /v1/certified/{country}/{series} at $0.25; that SKU is not an MCP tool). | |
| calendars | Yes | Calendar ids to intersect: two-letter ISO country codes, plus 'eu.t2' for the euro cash leg | |
| trade_date | Yes | Trade/reference date, YYYY-MM-DD. Day 0: never counted, never rolled. | |
| business_days | No | The offset you are trading under (T+n) | |
| instrument_class | No | Instrument class — a government bond never inherits an equity cycle |
Output Schema
| Name | Required | Description | Default |
|---|---|---|---|
| basis | No | ||
| error | No | Present on a free refusal or error; no charge | |
| status | No | Answer status, e.g. computed or an honest no-answer status | |
| country | No | ||
| receipt | No | Ed25519 answer receipt when receipt=true on a paid success | |
| question | No | ||
| no_charge | No | ||
| price_usd | No | ||
| disclaimer | No | ||
| how_to_pay | No | ||
| provenance | No | Cited official sources behind the answer | |
| bind_series | No | ||
| explanation | No | ||
| label_basis | No | Inputs and the rule ids that produced the two labels | |
| x_next_bind | No | ||
| http_endpoint | No | ||
| coverage_label | No | How much of the question is covered: ready = complete; partial = held with a disclosed limitation or default; gap = no number served. Rules at /label-rules | |
| confidence_label | No | Evidence verdict derived from source type, verification age and the stale flag (answers: the weakest series read). Rules at /label-rules | |
| payment_required | No | true when the call needs payment; how_to_pay explains x402 or card |