agents.writerslogic.com

Given a conversation, the index of the last message inside the provider's cached prefix, and a token target, returns which messages to drop: whole tool call plus tool result pairs (so no result is left without its call) and messages the caller marked droppable, oldest first or largest first, never inside the cached prefix, never the most recent keepRecent messages, never pinned ones. Everything up

Plans chunk boundaries for text an agent must feed to a model in pieces: every chunk is at most maxTokens in the named tokenizer (o200k_base or cl100k_base, verified by counting each finished chunk), boundaries fall only between sentences, blocks, whole Markdown or HTML tables and whole code fences, headings stay with the text that follows, and the chunks tile the input exactly (concatenating the

Reduces an HTML document to the elements an agent can act on: links with href, buttons, inputs (not type=hidden), selects, textareas, [role], [onclick], contenteditable, each with tag, type, role, best-effort accessible name (including label associations) and a CSS selector that matches exactly that element, preferring a stable id, then a data-testid-style attribute, name, aria-label, then a struc

Splits an agent's input into data regions (code fences, block quotes, XML-style wrappers such as <document>, BEGIN/END markers, triple quotes, email headers with body, JSON blocks) and the text around them, labels each sentence outside the data as instruction (leading imperative verb or polite request) or unknown, and lists injection-style phrases found anywhere in the text ('ignore previous instr

Compares a recipe (ordered steps naming selectors from an earlier dom-skeleton call), the saved skeleton elements those selectors came from, and the current page HTML. Per step it reports matched (same selector, same tag, type, role and name), changed (selector still exists but the element differs), moved (the same element now has a different selector, given as newSelector), ambiguous (several cur

Reports the length of a string in UTF-16 code units, Unicode code points, UTF-8 bytes and extended grapheme clusters (Intl.Segmenter), converts up to 200 ranges given in any one of those units into all four, and flags ranges that fall inside a surrogate pair, a multi-byte UTF-8 character or a grapheme cluster. It also runs the unicode-check rules (bidi controls, zero-width and invisible characters

Reads a confirmation page, email or API message and decides which state it states: submitted, pending, reserved or completed, using phrase lists the caller supplies (preferred, because wording is provider-specific) plus an optional default English list. Matches are whole-word, case- and typography-insensitive, returned with offsets in UTF-16, code points, UTF-8 bytes and graphemes, and a match ins

For aligned source and target segments, extracts the tokens a translation must not change (numbers with attached units or %, ISO dates, part numbers and versions, tolerance and comparison operators such as ± ≤ ≥, placeholders like {0} or %s, URLs and emails) and reports any that are missing, added or altered, with offsets in both texts in UTF-16, code points, UTF-8 bytes and graphemes. Numbers are

Scans a document for the targets it defines (numbered headings, Table/Figure/Listing/Equation captions at line start, Appendix/Annex headings, [n] bibliography entries, [^id] footnote definitions) and the references it makes to them ('see Section 3.2', 'Tables 2 and 4', 'Figures 3 to 5', '[7]', '[^note]'), and reports references with no target, targets defined twice, and targets never referenced,

Given footnote markers (label, page, x, y) and footnote texts (label, page, x, y) extracted from a laid-out document, pairs each marker with its note by label and page, pairing repeated labels on one page in reading order, optionally letting a note continue on the next page, and reports unattached markers, orphan notes, ambiguous groups (different counts for the same label) and notes placed above

Compares a message's wording with its attachment list: 'see attached' with nothing attached, a named file (report.pdf) that is not in the list, a kind of file mentioned (the spreadsheet, a screenshot, the PDF) that no attachment matches by extension or MIME type, and a stated count ('two files') that differs from the list; attachments the text never mentions are listed. Mentions inside a negation

Compares the scope descriptors of a claim and of the evidence offered for it, per dimension: geography and population (every claimed item must be equal to, or contained in a broader evidence item according to the caller's taxonomy), period (the evidence period must contain the claimed period; partial or no overlap is a mismatch), and version, basis and unit (must be equal after normalization). Des

Converts up to 200 money amounts between decimal strings and integer minor units (cents, yen, fils) using the ISO 4217 exponent from the SIX Group list, for an agent about to send an amount to a payment API. Returns the exponent, the integer minor amount and the canonical decimal string; JPY is 0, KWD and BHD are 3, CLF is 4. An amount with more fraction digits than the currency allows fails with

Splits one signed amount into up to 500 parts by weights (or equal parts), in integer minor units of its currency, for an agent dividing a bill, a refund, a fee or a tax. Each share is rounded under the declared mode, then the leftover minor units are assigned by the declared remainder policy, so the parts always sum to the total exactly. Negative totals (refunds) are supported; zero-weight parts

Rounds up to 100 final cash totals to the smallest payable increment, for an agent computing what a customer actually pays in cash or the change owed. Built-in rules exist only for currencies with an official source: CHF 0.05 (Münzverordnung SR 941.101), CAD 0.05 (Government of Canada), SEK 1 (Lag 1970:1029), AUD 0.05 (Consumer Protection WA); any other currency needs a caller increment. Rounds th

Computes the year fraction of up to 100 half-open date ranges [start, end) under a named ISDA day-count convention, and optionally the prorated charge, for an agent billing a partial period or accruing interest. Conventions follow Section 4.16 of the 2006 ISDA Definitions: 30/360, 30E/360, 30E/360 (ISDA), Actual/365 (Fixed), Actual/360, Actual/Actual (ISDA), 1/1. `end` is the day immediately follo

Prices a usage quantity against up to 50 tiers, graduated (each tier prices only its own units) or volume (the tier holding the whole quantity prices all of it), for an agent checking a usage bill or quoting a plan. Order of operations: subtract the included quantity, convert to billing packages (per N units, rounded up, down or not at all), price the tiers, add flat fees, apply the minimum charge

Recomputes up to 500 invoice lines in exact decimal arithmetic and compares them with the stated amounts, for an agent about to approve, pay or reconcile an invoice. Checks: quantity x unit price less discount equals the line amount; tax is taken as supplied (tax amounts are summed, never looked up) and, where a rate is given, tax equals rate x line amount under the declared rounding scope (per li

Spells out a number or a money amount in English words for a cheque, contract or invoice, for an agent that must write the amount in words next to the figures. Locales: en-US ("one hundred twenty-three"), en-GB ("one hundred and twenty-three"), en-IN (lakh and crore, "one crore twenty lakh"). With a currency it returns the integer words, the minor-unit fraction as digits over 10^exponent ("56/100"

Explains why a total moved between two versions of a quote, order or invoice (up to 300 lines each), for an agent that must say how much of the change came from quantity, unit price, exchange rate, new lines and dropped lines. Lines are matched by key. Matched lines are decomposed by sequential substitution in the declared factor order (default quantity, then price, then fx), so the effects sum to

Parses up to 100 number or money strings such as "1.234,56", "1,00,000", "(1,234.50)", "￥1,000" or "CHF 1'234.50" into canonical decimal strings, for an agent reading amounts from documents, emails or tables. With a BCP 47 locale it applies that locale's CLDR separators (read from Intl.NumberFormat); without one it lists every valid reading and an ambiguous string such as "1,234" returns unknown w

Classifies up to 100 identifier strings by format and, where it can be read, decodes the embedded timestamp, for an agent that must not pass an id of the wrong kind to a payment, ledger or API call. Recognises UUID (RFC 9562 version and variant, nil and max), ULID, KSUID, Discord and Twitter snowflakes, EIP-55 EVM addresses (checksum verified), email (WHATWG syntax and RFC 5321 length limits), E.1

Converts up to 200 quoted prices to a net price per base unit in one currency, for an agent comparing supplier quotes. Each line: price for `per` units of a unit of measure, optional tax-inclusive flag and rate, optional percentage discount, any currency. Uses only the caller's exchange rates and unit factors (1 uom = factor base units); a currency without a rate, a unit without a factor, or a tax

Finds the cheapest valid order quantity for a requested number of units across up to 50 supplier options, for an agent buying parts or consumables sold in packs. Each option has a pack size (units per pack or notation such as "6x100", "case of 12", "12/case", "case of 6 inners"), an optional minimum order quantity, an order increment and price breakpoints; the order is rounded up to a multiple of

Compares up to 200 requested attribute requirements with the values a supplier quoted (voltage, grade, finish, tolerance, brand, certification), for an agent checking that a quote matches the request before buying. Requirements are eq, ne, gte, lte, gt, lt, between (value..max), in (a list) or present; numeric comparisons use exact decimals, an optional tolerance, and the caller's unit conversions

Checks which required lines of a tender or RFQ are covered by the bids received (up to 200 lines, 30 bidders, 2000 offers), for an agent comparing responses. A line is covered when firm offers (exact item, no condition, no bundle) sum to the required quantity; substitute offers, offers bound to a bundle (all-or-nothing across the lines in that bundle) and offers with a stated condition are reporte

Checks whether an instrument's calibration certificate covers an intended measurement, for an agent about to rely on a reading or accept a calibrated device. Three checks: the intended range [min, max] lies inside the calibrated ranges (touching or overlapping ranges are joined); the stated expanded uncertainty of every calibrated range used is no larger than the required uncertainty; the calibrat

Checks the values on a certificate of analysis or test report against specification limits clause by clause (up to 200 clauses), for an agent accepting a lot or a supplier's material. Each clause has a parameter, an optional min and max and a unit; each result has a value, an optional reported uncertainty and an optional less-than or greater-than qualifier ("<0.01"). rule simple (default): the rep

Computes the date (and optionally the instant) a business-day deadline falls on, for an agent drafting or checking a contract, notice, SLA or partner response window: '10 clear business days' (both endpoints excluded) or 'within 10 business days' (end day counted), forward or backward, with an after-cutoff roll, caller or named holiday calendar and a DST-aware deadline time. Named calendars (US fe

Checks up to 100 local date-times (YYYY-MM-DDTHH:MM) or offset timestamps against an IANA time zone and reports whether each wall time exists once, never (spring-forward gap) or twice (fall-back overlap), with every real instant and the offset in force; also lists a zone's offset transitions in a year. Built for an agent scheduling a meeting, cron job or deadline in someone else's zone. Uses the r

Returns the week number, week-year, number of weeks in that year and the week's first and last day for up to 200 dates under ISO 8601 (Monday start, week 1 holds 4 January), the US convention (Sunday start, week 1 holds 1 January) or a custom weekStart/minimalDays rule, and checks an asserted week or week-year (2027-01-01 is ISO 2026-W53). Built for an agent reading or writing week-based dates in

Checks up to 200 claims 'Monday 2026-12-28' against the proleptic Gregorian calendar and reports the real weekday, whether the date exists (2026-02-29 does not), and the nearest date carrying the claimed weekday; a claim 'Friday, 13 March' without a year returns the years in a range where it holds. Built for an agent verifying dates in a document, email or itinerary. Gregorian only (no Julian date

For up to 50 caller-supplied instants, reports whether the NYSE core session (09:30-16:00 America/New_York, 13:00 on early-close days) is open, the reason when closed (weekend, named holiday, before open, after close), that day's open and close instants and the next open; or the same for a caller venue (zone, open, close, holidays, early closes). NYSE data is a dated snapshot of nyse.com covering

Computes the settlement date for a trade date under US equities T+1 (17 CFR 240.15c6-1, compliance date 2024-05-28) counting only days when the NYSE and the Federal Reserve Banks are open, or T+n on a named or caller calendar, and checks an asserted settlement date. The settlement-day rule (NYSE and Reserve Banks both open, so Columbus Day and Veterans Day are skipped) is our inference, not a publ

Maps up to 100 dates to a fiscal year, quarter, period and week for a caller-defined fiscal calendar: a month-aligned year (starts on day 1 of a named month) or a 52/53-week year ending on a given weekday last in or closest to a month end, in a 4-4-5, 4-5-4 or 5-4-4 pattern with the 53rd week appended to the final period; detects 53-week years and checks an asserted fiscal year, quarter or period.

Classifies up to 200 timestamp strings as anchored (RFC 3339 with Z or offset), naive local (no offset), date-only, epoch seconds or milliseconds, zone abbreviation, ambiguous numeric date, or unparseable, and lists the hazard of each; with assumedTimeZone it also reports whether a naive time falls in a DST gap or overlap there, every instant it could mean, and offsets that contradict the zone. Bu

Expands an RFC 5545 RRULE (FREQ DAILY/WEEKLY/MONTHLY/YEARLY, INTERVAL, COUNT, UNTIL, BYDAY with ordinals, BYMONTHDAY, BYMONTH, BYSETPOS, WKST; DTSTART with TZID; EXDATE) or a crontab(5) expression into up to 366 occurrences in a time zone, with the UTC instant of each, DST gap or overlap flags, caller blackout dates, a plain-English reading, and optionally the occurrences where it collides with a

For a time zone and a date range of up to 1100 days, lists every offset transition and what it does to local bucketing: the hourly labels that never occur (spring-forward), the hourly labels that occur twice and would merge two real hours when grouped by local time (fall-back), and the 23-, 24.5- or 25-hour days; optionally checks up to 500 caller hourly labels (YYYY-MM-DDTHH:00) for non-existent

Intersects up to 20 participants' free windows (up to 200 each, half-open RFC 3339 intervals with Z or offsets, so mixed time zones are fine) into the common slots at least minMinutes long, optionally clipped to a search window; when nothing fits, names the participants whose removal would create a slot. Built for an agent scheduling a meeting from already-fetched availability. It does not read ca

Converts a Gregorian date (or a Hebrew, Persian, Ethiopian or Hijri date) to the other calendars via the runtime's ICU, always naming the Hijri variant (Umm al-Qura, tabular civil, tabular astronomical-epoch, ICU astronomical) and flagging when variants disagree on the day; with mode easter, returns Western (Gregorian computus) and Orthodox (Julian computus, with its Gregorian equivalent) Easter a

Checks one proposed appointment (instant + duration) against a venue's local opening hours per weekday, closed dates or a named holiday calendar, up to 500 existing bookings with a buffer on each side, and a minimum notice measured from a caller-supplied asOf; every violated rule is returned as a witness with the conflicting booking or hour block. Local hours are resolved in the venue's IANA zone

Solves a simple temporal network: up to 40 named time points, up to 200 difference constraints 'b is between min and max minutes after a' and optional fixed instants, relative to a caller origin instant. When consistent it returns each point's earliest and latest feasible instant (where bounded); when not, it returns the cycle of constraints that contradict each other, with the total impossible sl

For up to 100 lots, computes the expiry date from manufacture/fill date + shelf life (days, weeks, months, years; month arithmetic clamps to month end) and from opened date + after-opening life, takes the earlier, and checks it against a caller asOf date and an optional minimum remaining days at receipt; flags a labelled expiry that disagrees with the computed one. The last day of life is the expi

Given a required date range (a contract term, a project, a shipment window) and up to 200 credentials each valid from a date to a date (both inclusive), reports the merged covered ranges, every uncovered gap with its first and last day and length, and whether each checkpoint date is covered; a credential ending the day before the next starts is contiguous. Built for an agent verifying insurance, l

Counts days between a received date and a released date for storage, demurrage, detention or parking charges: you state whether the receipt day and the release day count, how free days are counted (calendar or business days on a named or caller calendar), and a tiered per-day rate schedule by chargeable day number; returns the last free day, chargeable days, a per-tier breakdown and the total in m

Given a booking start, the moment of change, the booking amount and a tiered policy whose deadlines are either elapsed hours before start ('48 hours') or local calendar days at a local time ('18:00 the day before' in the venue's zone, DST-correct), returns the applicable tier, its deadline instants, the penalty in minor units under your stated rounding, and when the next tier begins; checks an ass

For up to 100 people, computes age in complete years and months on a caller asOf date, the date they reach each minimum age (the birthday) and the first day they exceed each maximum age, and checks min/max age requirements; 29 February births need a declared common-year rule (28 February or 1 March) because jurisdictions differ. Built for an agent checking eligibility (18+, under 65, 21 to buy). I

Parses a dependency version range in npm (node-semver), PEP 440 specifier, Cargo requirement or Maven range syntax and tests up to 100 candidate versions against it, for agents that write or review manifests. Returns per-version satisfies/violates with the failing comparator, the normalized range, the sorted versions and the highest match; pre-release, caret on 0.x, epoch and local-version rules f

Parses up to 50 SPDX license expressions (AND, OR, WITH exceptions, + or-later, LicenseRef) and evaluates each against a caller policy (allow list, deny list, allowed exceptions, OSI/FSF flags, copyleft tier) for agents vetting dependency licenses. Returns the canonical expression, per-license flags from the pinned SPDX License List, the verdict, and which licenses satisfy an OR. Does not detect l

Checks that up to 20 named exports (functions, classes, constants, types, default) exist in the .d.ts files published for an exact npm package version, read from jsDelivr, for coding agents that may be calling an API that does not exist. Follows export lists and relative export-star re-exports within the package (at most 7 files) and reports when the export surface cannot be fully enumerated. Neve