SMS Desk https://sms-desk.skillsafe.ai/ This app is a derived work built on the agent skill "sms" published in the coreyhaines31/marketingskills repository (path skills/sms), listed on SkillSafe as @coreyhaines31/sms. That repository is licensed under the MIT License: https://github.com/coreyhaines31/marketingskills/blob/main/LICENSE What was taken from the source skill: its SMS copy structure (sender ID first, one call to action and one link, an opt-out footer), its sequence types and their spacing (welcome, abandoned cart, browse abandonment, post-purchase, win-back, promotional, transactional), its advice to keep the first abandoned-cart text free of a discount, its quiet-hour practical default of 9 a.m. to 8 p.m. recipient-local, and the opt-in disclosure and HELP/STOP reply patterns in its compliance reference. What was changed: the skill is written for an agent that plans an SMS program in conversation. This app instead reads a flow pasted or dropped by the user, measures every message in the browser (GSM-7 and UCS-2 segments, merge tags filled), checks it against a fixed rule set whose sources are listed in llms.txt, and sends the computed facts to a model whose system prompt was written for this app. Every text the model writes is measured and checked again. No text of the source skill is reproduced at length; short phrases from its sequence templates appear in the free flow skeletons, and standard phrases such as "Reply STOP to opt out" and "Msg & data rates may apply" appear throughout. The source repository's license follows. Not affiliated with or endorsed by the skill's author, Twilio, CTIA or any carrier. Not legal advice. The brands in the bundled examples are invented. --- License of coreyhaines31/marketingskills --- MIT License Copyright (c) 2025 Corey Haines Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions: The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.