Skip to content
'; return; } if (!results.length) { setMeta(''); var escapedQ = query.trim().replace(/&/g,'&').replace(//g,'>'); searchResults.innerHTML = '
No results for "' + escapedQ + '"
Try different keywords
'; return; } setMeta(results.length + ' result' + (results.length === 1 ? '' : 's')); var re = buildHighlightRe(query); var grouped = {}; results.forEach(function(r) { var sec = r.section || 'Blog'; if (!grouped[sec]) grouped[sec] = []; grouped[sec].push(r); }); Object.keys(grouped).forEach(function(section) { var group = document.createElement('div'); var header = document.createElement('div'); header.setAttribute('style', GH_HEADER); header.textContent = section; group.appendChild(header); grouped[section].forEach(function(r, i) { var a = document.createElement('a'); a.className = 'search-result'; a.href = r.href; a.setAttribute('data-search-result', ''); a.addEventListener('click', function() { phCapture('search_result_clicked', { query: query, title: r.title, href: r.href, section: r.section, position: i + 1, }); }); a.innerHTML = '
' + highlightTerms(r.title, re) + '
' + '
' + highlightTerms(r.snippet, re) + '
'; group.appendChild(a); }); searchResults.appendChild(group); }); } // -- posthog capture (no-op if ph not loaded) -- function phCapture(event, props) { if (window.posthog && window.posthog.capture) window.posthog.capture(event, props); } // -- open/close -- function openSearch(trigger) { loadIndex(); searchModal.style.display = 'flex'; searchOverlay.style.display = 'block'; document.body.style.overflow = 'hidden'; searchInput.focus(); renderResults(searchInput.value, runSearch(searchInput.value)); phCapture('search_opened', { trigger: trigger || 'button' }); } function closeSearch() { searchModal.style.display = 'none'; searchOverlay.style.display = 'none'; document.body.style.overflow = ''; searchInput.value = ''; searchResults.innerHTML = '
Start typing to search
'; setMeta(''); } if (searchOpenBtn) searchOpenBtn.addEventListener('click', function() { openSearch('button'); }); if (searchOpenMobile) searchOpenMobile.addEventListener('click', function() { if (menu) { menu.classList.add('hidden'); } openSearch('mobile'); }); if (searchCloseBtn) searchCloseBtn.addEventListener('click', closeSearch); if (searchOverlay) searchOverlay.addEventListener('click', closeSearch); searchInput.addEventListener('input', function() { var q = searchInput.value; debouncedSearch(q, function(results){ renderResults(q, results); if (q.trim().length >= 2) { phCapture('search_query', { query: q.trim(), result_count: results.length }); } }); }); searchInput.addEventListener('keydown', function(e) { if (e.key === 'ArrowDown') { e.preventDefault(); var first = searchResults.querySelector('[data-search-result]'); if (first) first.focus(); } }); searchResults.addEventListener('keydown', function(e) { var all = Array.from(searchResults.querySelectorAll('[data-search-result]')); var idx = all.indexOf(document.activeElement); if (e.key === 'ArrowDown') { e.preventDefault(); all[idx < all.length - 1 ? idx + 1 : 0] && all[idx < all.length - 1 ? idx + 1 : 0].focus(); } if (e.key === 'ArrowUp') { e.preventDefault(); idx <= 0 ? searchInput.focus() : all[idx - 1].focus(); } }); document.addEventListener('keydown', function(e) { if ((e.metaKey || e.ctrlKey) && e.key.toLowerCase() === 'k') { e.preventDefault(); openSearch('keyboard'); } if (e.key === 'Escape' && searchModal.style.display !== 'none') closeSearch(); }); });

The open intelligence platform you own.

Model routing, inference policy, and zero-instrumentation telemetry with tapes, deployed in your own cloud

Start with paper

The platform for AI enablement.

Give your team an easier way to use AI while your organization decides what happens behind the scenes.

Capture high fidelity traces

Connect all your providers

Anthropic, OpenAI, Fireworks, all sit behind one shared, authenticated AI endpoint.

Sessions
Name / Model
Explore semantic routingGPT-6.1 SolAlex Chen
Review authentication flowClaude Opus 5.5Jordan Lee
Update the product siteGPT-5.6Sam Rivera

Know who ran each session

Paper proxies for attribution and attaches the verified user ID to the session, so each session has a named owner.

Compatible with OpenTelemetry

Manage access to models

Select which models your organization uses. Give an allowlist of exact model names, or let all models through.

Optimize how your teams use AI.

Every session your team runs is saved as structured history, not terminal output. It includes each prompt, turn and tool call, plus the model, tokens, cost, duration and completion status.

Capture high fidelity traces
Open source

Build on open foundations.

tapes captures the data layer. Cassettes extend it with independent APIs. stereOS provides a hardened operating system purpose-built for the agents generating that data.

01

tapes

Full-fidelity telemetry for AI agents. Capture, inspect, search, and replay the requests and responses behind every session.

View on GitHub
02

Public cassettes

Skills cassette

Generate, store, version, and serve reusable skills extracted from tapes trace data.

View on GitHub →Export cassette

Export one session or a time range as JSONL with trace- or span-level detail.

View on GitHub →Search cassette

Add semantic span search, an MCP search tool, and background embeddings to tapes.

View on GitHub →Memory cassette

Store reviewed memories from captured sessions, then recall accepted entries over HTTP or MCP.

View on GitHub →
03

stereOS

A hardened, minimal Linux operating system built on Nix and purpose-built for AI agents, packaged as reproducible machine images called mixtapes.

View on GitHub →
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Start with paper

Turn every session into knowledge at team scale.

Get started