{"slug":"summarize","name":"Summarize Faithfully, Keep Every Number","version":"1.0.2","updated_at":"2026-10-09T07:15:52.027Z","use_when":"Writes a faithful summary of a text in the text's own language, using only what the text says, with every number, name and date kept exactly and every qualifier kept. Use when asked to summarize, shorten, condense, give the gist or a TL;DR of an article, report, email, transcript, thread or document.","not_for":"Legal, medical or financial texts where a missed condition is costly (check the result against the source); texts you want interpreted, judged or expanded; very short sources that need no summary.","languages":["any"],"tags":["summarize","summary","tldr","faithful","multilingual","condense"],"category":"research","category_url":"https://aiskills402.com/categories/research","keywords":["faithful summary","TL;DR","give the gist","condense"],"faq":[{"q":"How long is the summary?","a":"The default is at most 100 words, and the skill ends with one short line naming what it left out. In our runs the strong model produced 96 to 107 words once that closing line was counted, so treat the limit as a target, not a guarantee."},{"q":"Does it keep hedges and conditions?","a":"That is the main rule: words such as about, planned, unless and only if travel with their claim, and numbers, names and dates are copied exactly. Claude Sonnet did this reliably. Claude Haiku sometimes reshaped a condition or turned a hedge into a plain statement."},{"q":"Can I trust it on a contract or a medical report?","a":"Not without checking. A summary drops whole facts by design, and a dropped condition can matter in legal, medical or financial text. Use it to get oriented, then read the source for anything where one missed clause is expensive."}],"examples":[{"lang":"en","model":"claude-sonnet-5-5","input_excerpt":"Harbourline Ferries announced on 14 March 2026 that it will withdraw the night crossing between Dunmere and Skarra from 1 November, ending a service that has run since 1998. Chief executive Marian Toll said the route lost about 1.9 million pounds last year, and that the two 1996-built vessels, the Corrie and the Halloran, would be sold unless a buyer for the whole route appears before the end of…","output_excerpt":"Harbourline Ferries announced on 14 March 2026 it will withdraw the Dunmere–Skarra night crossing from 1 November. Chief executive Marian Toll said the route lost about 1.9 million pounds last year and the Corrie and Halloran would be sold unless a buyer for the whole route appears before the end of June.…"},{"lang":"bg","model":"claude-sonnet-5-5","input_excerpt":"Общинският съвет на Долна Речка гласува на 9 април 2026 г. с 11 гласа „за“, 6 „против“ и 2 въздържали се да бъде затворено основното училище „Христо Ботев“ от 15 септември, освен ако до 30 юни не бъде осигурено финансиране за ремонт на покрива. Кметът Стефан Данаилов посочи, че ремонтът ще струва 1,4 милиона лева, а годишната издръжка на сградата е около 380 хил. лв.…","output_excerpt":"Общинският съвет на Долна Речка гласува на 9 април 2026 г. (11 „за“, 6 „против“, 2 въздържали се) училище „Христо Ботев“ да се затвори от 15 септември, освен ако до 30 юни не се осигури финансиране за ремонт на покрива. Според кмета Стефан Данаилов ремонтът струва 1,4 млн. лв., а учениците са 96; директорката Румяна Тодорова оспорва: по нейни данни са 104.…"},{"lang":"de","model":"claude-sonnet-5-5","input_excerpt":"Die Stadtwerke Lindenau haben am 5. Mai 2026 angekündigt, die Preise für Fernwärme zum 1. Oktober um durchschnittlich 7,5 Prozent anzuheben. Für einen Haushalt mit einem Jahresverbrauch von 12.000 Kilowattstunden bedeute das nach Unternehmensangaben Mehrkosten von etwa 96 Euro pro Jahr.…","output_excerpt":"Die Stadtwerke Lindenau kündigten am 5. Mai 2026 an, die Fernwärmepreise zum 1. Oktober im Schnitt um 7,5 Prozent anzuheben; für 12.000 kWh Jahresverbrauch seien das nach Unternehmensangaben etwa 96 Euro mehr pro Jahr. Geschäftsführerin Katrin Ostermann nennt 11 Prozent teurere Biomasse (2025) und 18 Millionen Euro für ein neues Heizwerk.…"},{"lang":"es","model":"claude-sonnet-5-5","input_excerpt":"La cooperativa agrícola Valle Claro presentó el 2 de febrero de 2026 los resultados de la campaña 2025: la producción de aceite de oliva fue de 3.850 toneladas, un 22 % menos que en 2024, cuando se alcanzaron 4.940 toneladas.…","output_excerpt":"Valle Claro presentó el 2 de febrero de 2026 su campaña 2025: 3.850 toneladas de aceite de oliva, un 22 % menos que las 4.940 de 2024. Su presidente, Andrés Ferrán, lo atribuyó a la sequía del verano y a una helada a finales de noviembre, aunque parte podría deberse a la floración tardía. Los ingresos subieron un 9 %, hasta 31,2 millones de euros; el beneficio neto fue de 2,3 millones.…"},{"lang":"ru","model":"claude-sonnet-5-5","input_excerpt":"Городская клиника № 3 в Нижнем Тагиле объявила 18 июня 2026 года о переходе на электронную запись к врачам с 1 сентября. По словам главного врача Ольги Сергеевны Ветровой, в 2025 году в регистратуру обратились 212 тысяч человек, а среднее время ожидания в очереди составляло 34 минуты.…","output_excerpt":"Городская клиника № 3 в Нижнем Тагиле объявила 18 июня 2026 года о переходе на электронную запись с 1 сентября: через сайт, приложение и по телефону 122. Главный врач Ольга Сергеевна Ветрова: в 2025 году в регистратуру обратились 212 тысяч человек, ожидание составляло 34 минуты, после запуска, как ожидается, станет примерно 10 минут, окончательные цифры известны будут после первого квартала.…"}],"page_url":"https://aiskills402.com/skills/summarize","markdown_url":"https://aiskills402.com/skills/summarize.md","image_url":"https://cdn.aiskills402.com/og/skills/summarize/6e3afa4e.png","related_url":"https://api.aiskills402.com/v1/skills/summarize/related","purchases_count":46,"tested":{"date":"2026-09-30","strong":{"model":"claude-sonnet-5-5 (Claude Code alias \"sonnet\")","verdict":"Same language on en/bg/de/es/ru, exact numbers and names, no opinions. Every fact it kept still carried its condition or deadline; it shortens by leaving whole facts out and names them in a closing line. 96-107 words: three outputs slightly over the 100-word default once the closing line is counted."},"weak":{"model":"claude-haiku-4-5-20251001 (Claude Code alias \"haiku\")","verdict":"Passes all six cases (en/bg/de/es/ru + contradictions), 86-102 words, and keeps the named conditions. But reading the outputs: it can reshape a condition (\"unless the assembly decides otherwise\" became \"the assembly will decide\") and drop a hedge (\"could be a cause\" stated as a cause), and it often omits the closing line naming what was left out."},"note":"Tested on six fictional texts of 241-345 words: default at most 100 words, most important facts kept whole with their conditions, a closing line naming what was left out. Machine checks catch only the conditions they name, not reshaped wording; one run per model and case. Details: test results files.","baseline":{"date":"2026-10-03","rows":[{"label":"Passed our checks (exact words)","better":"higher","strong":{"with":{"n":6,"of":6},"without":{"n":0,"of":6}},"weak":{"with":{"n":6,"of":6},"without":{"n":0,"of":6}}}],"note":"One run per model and case. The check looks for numbers written exactly as in the text, so \"7,5 %\" for \"7.5%\" counts as missing and the gap looks bigger than it is. Reading the answers: without the skill the summaries were longer and some dropped numbers, and Haiku summarised in English in three of six cases."},"report_url":null},"price_usd":"0.03","price_micro":30000,"size_bytes":7641,"sha256":"9e5d073d0dc281ee9a1e9453589628e66d1c5bcb6f482a12c4dc8bbe9779791e","outline":["Hard rules","Length","Uncertainty in the source","Work in this order","Two short examples"],"license":{"summary":"Perpetual, non-exclusive; use and modify for yourself incl. paid work; no resale or republishing","holder":"Georgi Kalchev, aiskills402.com","url":"https://aiskills402.com/docs#license"},"buy_url":"https://api.aiskills402.com/v1/skills/summarize/file","redownload_url_template":"https://api.aiskills402.com/v1/purchases/{token}","mcp_tool":null,"payment":{"protocol":"x402","scheme":"exact","asset":"USDC","selling":true,"network":"base","network_caip2":"eip155:8453","pay_to":"0xbc0dcc70d8b5d85541d86ffc68d988fd59c22e68","facilitator":"cdp"},"seo_title":"Faithful Summary Skill File for AI Agents","seo_description":"Summarize articles, reports and emails in their own language, keeping every number, name, date and qualifier. Tested skill file, $0.03 once.","versions":[{"version":"1.0.2","date":"2026-10-04","changelog":"# Changelog\n\n## 1.0.2 — 2026-10-04\n\n- Test summary: the same cases with and without the skill, per model, now shown next to the verdicts, including where the skill made no difference. The skill file itself is unchanged.\n\n## 1.0.1 — 2026-10-03\n\n- Licence section: the note telling the agent to skip it now reads \"ignore it while you work\" instead of \"ignore it while rewriting text\", which was written for one skill and read oddly in the others. The skill's own instructions are unchanged.\n\n## 1.0.0 — 2026-09-30\n\nFirst release: faithful summary in the source's language, exact numbers/names/dates, qualifiers and source contradictions kept, default short form.\n"},{"version":"1.0.1","date":"2026-10-03","changelog":"# Changelog\n\n## 1.0.1 — 2026-10-03\n\n- Licence section: the note telling the agent to skip it now reads \"ignore it while you work\" instead of \"ignore it while rewriting text\", which was written for one skill and read oddly in the others. The skill's own instructions are unchanged.\n\n## 1.0.0 — 2026-09-30\n\nFirst release: faithful summary in the source's language, exact numbers/names/dates, qualifiers and source contradictions kept, default short form.\n"},{"version":"1.0.0","date":"2026-09-30","changelog":"# Changelog\n\n## 1.0.0 — 2026-09-30\n\nFirst release: faithful summary in the source's language, exact numbers/names/dates, qualifiers and source contradictions kept, default short form.\n"}]}