The Letter Company випускає Letterpress-1: кодингового агента для growth engineering

Play the loop</button> <button class="btn" id="prev">← Back</button> <button class="btn" id="next">Next →</button> </div> </section> <section class="panel" id="p-modes" role="tabpanel"> <div class="modes" id="modes"></div> <div class="card mdetail"><span class="tag" id="mtag"></span><p id="mbody" style="margin:6px 0 0"></p></div> <div style="margin-top:16px"><span class="tag">Де працює</span> <div class="chips" id="surf"></div> <p class="note">А також редагування на сайті за допомогою ⌘L: змініть текст на живій сторінці — і буде створено pull request. 760 інструментів доступні через MCP, REST і CLI.</p> </div> </section> <section class="panel" id="p-prims" role="tabpanel"> <div class="filters" id="flt"></div> <div class="prims" id="prims"></div> <div class="card" style="margin-top:12px"><span class="tag" id="ptag">Натисніть примітив</span><h3 id="ptitle">Попередньо створена інфраструктура зростання</h3><p id="pbody" style="color:var(--muted);margin:0">Кожен примітив є окремою кінцевою точкою. У публікації про запуск особливо виділено Proofs, Simulations, Benches і Phantoms.</p></div> </section> <section class="panel" id="p-calc" role="tabpanel"> <div class="calc"> <div> <div class="row"><label>Pull request на місяць <span class="v" id="vpr"></span></label><input type="range" id="pr" min="0" max="200" value="20"></div> <div class="row"><label>Токенів на pull request (Letter вказує від 150 до 900)</label> <div class="seg" id="tpr"><button class="btn" data-v="150" aria-pressed="false">150</button><button class="btn" data-v="500" aria-pressed="true">500</button><button class="btn" data-v="900" aria-pressed="false">900</button></div></div> <div class="row"><label>Статей опубліковано на місяць (по 1 030 токенів кожна) <span class="v" id="var"></span></label><input type="range" id="ar" min="0" max="60" value="8"></div> <div class="row"><label>Активні сайти Phantom (по 300 токенів на місяць кожен) <span class="v" id="vph"></span></label><input type="range" id="ph" min="0" max="10" value="2"></div> <div class="row"><label>Відповіді щодо видимості ШІ (по 12 токенів кожна) <span class="v" id="vai"></span></label><input type="range" id="ai" min="0" max="3000" step="50" value="600"></div> <div class="row"><label>Ідентифіковані відвідувачі (по 25 токенів кожен) <span class="v" id="vvi"></span></label><input type="range" id="vi" min="0" max="2000" step="25" value="100"></div> </div> <div class="card"> <span class="tag">Ваш місяць</span> <div class="total" id="tok"></div> <div style="color:var(--muted);font-size:13px" id="list"></div> <div id="bars" style="margin-top:10px"></div> <p class="note">1 токен = 1 цент за стандартною ціною. Перевищення ліміту для кожного тарифу оплачується за ставкою, що у 5 разів перевищує його власну ставку за токен. Значення за замовчуванням відповідають прикладу цін від Letter. Тарифи наведено на letter.dev/pricing.</p> </div> </div> </section> <div class="ft"><span>Джерела: <a href="https://letter.dev/" target="_blank" rel="noopener">letter.dev</a> · <a href="https://letter.dev/pricing" target="_blank" rel="noopener">тарифи</a> · <a href="https://letter.dev/agents.md" target="_blank" rel="noopener">agents.md</a></span><span class="mtp">© Marktechpost</span></div> </div> <script> (function(){ var R=document.getElementById('lp1x'); function $(id){return document.getElementById(id)} function post(){try{parent.postMessage({lp1xHeight:R.offsetHeight+40},'*')}catch(e){}} // tabs var tabs=R.querySelectorAll('.tab'); tabs.forEach(function(t){t.addEventListener('click',function(){ tabs.forEach(function(x){x.setAttribute('aria-selected',x===t?'true':'false')}); R.querySelectorAll('.panel').forEach(function(p){p.classList.toggle('on',p.id==='p-'+t.dataset.t)}); if(t.dataset.t==='calc')calc(); if(t.dataset.t==='modes')renderSurf(); setTimeout(post,60); })}); // loop var S=[ ['Signals','Read the site and the market','The agent maps your pages and watches outside signals: AI agent visits, Google rankings, human traffic and competitor pages.',['<span class="p">›</span> what should we build for growth?','<span class="dim">reading the site · checking competitor pages</span>']], ['Plan','Propose what should exist','In Plan mode it picks a goal and drafts a build plan. You approve the picks you want before anything is built.',['<span class="dim">plan · 4 actions proposed</span>','<span class="dim">waiting on approve</span>']], ['Build','Build in a sandbox','The change is written inside an isolated sandbox. Letter says it is tuned to keep brand copy and visuals consistent.',['<span class="dim">building in a sandbox</span>','<span class="dim">changed 3 files</span>']], ['Review','Self-review the change','The agent reviews its own diff and fixes what the review finds before handing it over.',['<span class="dim">reviewing the change</span>','<span class="ok">fixed what the review found</span>']], ['PR','Open a pull request with a preview','Every change returns as a pull request plus a live preview link of your own site.',['<span class="ok">✓ pull request opened · preview is up</span>']], ['You','You decide what lands','Keep it as a preview, leave the pull request open, or merge once checks pass. Nothing lands until you say.',['<span class="p">›</span> merge when checks pass','<span class="ok">✓ queued for merge</span>']] ]; var cur=0,timer=null,typeT=null,lines=[]; var pipe=$('pipe'); S.forEach(function(s,i){var b=document.createElement('button');b.className='node';b.innerHTML='<b>'+(i+1)+'</b>'+s[0];b.onclick=function(){stop();go(i)};pipe.appendChild(b)}); function go(i){ cur=i;var nodes=pipe.querySelectorAll('.node'); nodes.forEach(function(n,k){n.classList.toggle('done',k<i);n.classList.toggle('cur',k===i)}); $('rail').style.width=(i/(S.length-1)*100)+'%'; $('stag').textContent='Step '+(i+1)+' of 6';$('stitle').textContent=S[i][1];$('sbody').textContent=S[i][2]; if(i===0)lines=['<span class="dim">~/website $</span> letterpress']; type(S[i][3]); } function type(add){ clearTimeout(typeT);var k=0,term=$('term'); function step(){if(k<add.length){lines.push(add[k++]);if(lines.length>7)lines=lines.slice(-7);term.innerHTML=lines.join('<br>')+'<br><span class="cur"></span>';typeT=setTimeout(step,420)}} step(); } function stop(){clearInterval(timer);timer=null;$('play').textContent=' Play the loop'} $('play').onclick=function(){if(timer){stop();return}if(cur===S.length-1)go(0);$('play').textContent='❚❚ Pause';timer=setInterval(function(){if(cur<S.length-1)go(cur+1);else stop()},1900)}; $('next').onclick=function(){stop();go(Math.min(cur+1,S.length-1))}; $('prev').onclick=function(){stop();go(Math.max(cur-1,0))}; go(0); // modes var M=[['01','Build','Build anything from a prompt','Create pages and features from plain words. Letter says the agent is fine-tuned to write brand-ready copy and keep brand visuals.'], ['02','Plan','Pick a goal, get a plan','Name a goal and Letterpress-1 proposes growth strategies to build straight into your repository, with no extra tools.'], ['03','Fix','Find what is broken and fix it','Dispatch pull requests that fix common issues across a marketing site, most severe first.']]; var mw=$('modes'); M.forEach(function(m,i){var b=document.createElement('button');b.className='mode';b.innerHTML='<div class="n">'+m[0]+'</div><h3>'+m[1]+'</h3><div style="color:var(--muted);font-size:13px">'+m[2]+'</div>';b.onclick=function(){selM(i)};mw.appendChild(b)}); function selM(i){mw.querySelectorAll('.mode').forEach(function(x,k){x.classList.toggle('on',k===i)});$('mtag').textContent=M[i][1]+' mode';$('mbody').textContent=M[i][3];post()} selM(0); var SU=['Letter platform','Slack app','Letterpress CLI','Website portal','Letterpress App','Your own agent via MCP']; function renderSurf(){var c=$('surf');c.innerHTML='';SU.forEach(function(s,i){var d=document.createElement('span');d.className='chip';d.style.animationDelay=(i*90)+'ms';d.textContent=s;c.appendChild(d)})} renderSurf(); // primitives var P=[ ['Proofs','conv','Signed proof of customer success','Connect telemetry and billing. Letter issues a third-party verified proof that AI agents can review. You choose what is public.'], ['Simulations','conv','Agents try before buying','Mirror versions of your API or MCP with simulated data, so agents can test without touching your database.'], ['Benches','conv','Self-governed benchmarks','Describe a benchmark; the app deploys itself, re-runs on a schedule and open-sources its code. The site calls these Benchmarks.'], ['Phantoms','geo','Independent sandbox blogs','Launch autonomous publications that write and publish, so you can test growth strategies away from your main site.'], ['Letterbases','geo','Native content database','An optional store for content collections that the agent refines without a pull request.'], ['Kernels','geo','Writing kernels','Drafting endpoints for content. A kernel draft costs 161 tokens.'], ['Visitors','in','Visitor identification','A script that tracks human and AI agent visits per page and de-anonymizes traffic. 25 tokens per identified visitor.'], ['Mailers','in','Warmed mailboxes and sequences','Outbound email sequences installed natively. A mailbox costs 300 tokens a month.'], ['Seers','watch','Competitor watching','Seers read competitor sitemaps on a schedule and flag new pages for a build to answer.'] ]; var G={all:'All',conv:'Agentic conviction',geo:'GEO / SEO',in:'Inbound conversion',watch:'Watching'}; var RP={conv:'Letter positions these against G2 and Trustpilot.',geo:'Letter positions these against Semrush, Sanity and Profound.',in:'Letter positions these against RB2B and Instantly.',watch:'Listed in agents.md.'}; var fw=$('flt'),pw=$('prims'); Object.keys(G).forEach(function(k){var b=document.createElement('button');b.className='btn flt';b.textContent=G[k];b.setAttribute('aria-pressed',k==='all');b.onclick=function(){fw.querySelectorAll('.flt').forEach(function(x){x.setAttribute('aria-pressed',x===b)});pw.querySelectorAll('.prim').forEach(function(p){p.classList.toggle('dim',k!=='all'&&p.dataset.g!==k)})};fw.appendChild(b)}); P.forEach(function(p,i){var b=document.createElement('button');b.className='prim';b.dataset.g=p[1];b.innerHTML='<small>'+G[p[1]]+'</small><b>'+p[0]+'</b>';b.onclick=function(){pw.querySelectorAll('.prim').forEach(function(x){x.classList.toggle('on',x===b)});$('ptag').textContent=G[p[1]];$('ptitle').textContent=p[0]+': '+p[2];$('pbody').textContent=p[3]+' '+RP[p[1]];post()};pw.appendChild(b)}); // calculator var PL=[['Basic',100,10000,50],['Starter',500,50000,50],['Growth',1000,130000,38.46],['Scale',2500,400000,31.25]]; var tpr=500; $('tpr').querySelectorAll('button').forEach(function(b){b.onclick=function(){tpr=+b.dataset.v;$('tpr').querySelectorAll('button').forEach(function(x){x.setAttribute('aria-pressed',x===b)});calc()}}); ['pr','ar','ph','ai','vi'].forEach(function(id){$(id).addEventListener('input',calc)}); function f(n){return n.toLocaleString('en-US')} function calc(){ var pr=+$('pr').value,ar=+$('ar').value,ph=+$('ph').value,ai=+$('ai').value,vi=+$('vi').value; $('vpr').textContent=pr;$('var').textContent=ar;$('vph').textContent=ph;$('vai').textContent=f(ai);$('vvi').textContent=f(vi); var t=pr*tpr+ar*1030+ph*300+ai*12+vi*25; $('tok').textContent=f(t)+' tokens';$('list').textContent='$'+f(Math.round(t/100))+' at list price'; var costs=PL.map(function(p){return p[1]+Math.max(0,t-p[2])*p[3]/1000}); var min=Math.min.apply(null,costs),max=Math.max.apply(null,costs),bi=costs.indexOf(min); var h='';PL.forEach(function(p,i){h+='<div class="bar'+(i===bi?' best':'')+'"><div class="lbl"><span>'+p[0]+' · $'+f(p[1])+'/mo, '+f(p[2])+' tokens</span><b>$'+f(Math.round(costs[i]))+(i===bi?' ✓':'')+'</b></div><div class="trk"><i data-w="'+(costs[i]/max*100).toFixed(1)+'"></i></div></div>'}); $('bars').innerHTML=h; requestAnimationFrame(function(){requestAnimationFrame(function(){$('bars').querySelectorAll('i').forEach(function(i){i.style.width=i.dataset.w+'%'})})}); post(); } calc(); window.addEventListener('load',post);window.addEventListener('resize',post);setTimeout(post,300);setTimeout(post,1200); })(); </script> </body></html> ">