{"page":1,"limit":100,"total":15,"total_catalog":69077,"catalog_meta":{"core_certified":59946,"community_indexed":9131,"aggregate_tracked":64349,"total_all":133426,"tiers_doc":"core = evidence-gated (adoption/verification/age) | community = indexed with weak signal, trust<=55 | aggregate = tracking-only inventory (see /api/community)"},"total_pages":1,"has_next":false,"has_prev":false,"sources":{"github":12130,"community-submitted":18,"npm-registry":24788,"pypi":14311,"smithery":6195,"official-registry":9076,"crates":1933,"docker":625,"community-submission":1},"skills":[{"id":"mn-real-lotuswisdommcp","name":"lotus-wisdom-mcp","slug":"real-lotus-wisdom-mcp","description":"Contemplative reasoning MCP server — Lotus Sutra wisdom framework with interactive ext-apps journey visualization.","category":"Developer Tools","price":0,"free":true,"sentinel_score":8,"review_status":"auto-scanned","risk_level":"red","install":"npx -y lotus-wisdom-mcp","author":"linxule","version":"1.0.0","tags":["mcp","real","typescript","linxule","lotus-sutra"],"source":{"type":"github","url":"https://github.com/linxule/lotus-wisdom-mcp","note":"Real MCP server. 31 stars. Language: TypeScript. Last push: 2026-06-22T13:30:57Z. Discovered via auto-discovery."},"indexed_at":"2026-09-10","tier":"core","trust_score_100":69,"badge_url":"https://www.marketnow.site/api/badge/real-lotus-wisdom-mcp.svg","page_url":"https://www.marketnow.site/s/real-lotus-wisdom-mcp"},{"id":"mn-real-contextappsmcp","name":"context-apps-mcp","slug":"real-context-apps-mcp","description":"MCP server from tubasasakunn/context-apps-mcp","category":"Developer Tools","price":0,"free":true,"sentinel_score":8,"review_status":"auto-scanned","risk_level":"yellow","install":"git clone https://github.com/tubasasakunn/context-apps-mcp","author":"tubasasakunn","version":"1.0.0","tags":["mcp","real","unknown","tubasasakunn"],"source":{"type":"github","url":"https://github.com/tubasasakunn/context-apps-mcp","note":"Real MCP server. 7 stars. Language: Unknown. Last push: 2025-07-26T04:34:07Z. Discovered via auto-discovery."},"indexed_at":"2026-09-10","tier":"core","trust_score_100":58,"badge_url":"https://www.marketnow.site/api/badge/real-context-apps-mcp.svg","page_url":"https://www.marketnow.site/s/real-context-apps-mcp"},{"id":"mn-real-extapps","name":"ext-apps","slug":"real-ext-apps","description":"Official repo for spec & SDK of MCP Apps protocol - standard for UIs embedded AI chatbots, served by MCP servers","category":"AI/ML","price":0,"free":true,"sentinel_score":8,"review_status":"auto-scanned","risk_level":"yellow","install":"git clone https://github.com/modelcontextprotocol/ext-apps","author":"modelcontextprotocol","version":"1.0.0","tags":["mcp","real","typescript","modelcontextprotocol","ai"],"source":{"type":"github","url":"https://github.com/modelcontextprotocol/ext-apps","note":"Real MCP server. 2534 stars. Language: TypeScript. Last push: 2026-06-17T15:51:58Z. Discovered via auto-discovery."},"indexed_at":"2026-09-10","tier":"core","trust_score_100":84,"badge_url":"https://www.marketnow.site/api/badge/real-ext-apps.svg","page_url":"https://www.marketnow.site/s/real-ext-apps"},{"id":"mn-sm2-05730","name":"linxule/mcp-music-studio","slug":"linxule-mcp-music-studio","description":"Two-mode creative music studio: scored composition (ABC notation → sheet music + audio) and live performance (Strudel live coding with synthesis + effects). 128 GM instruments, ext-apps UIs, comprehen","category":"Developer Tools","price":0,"free":true,"sentinel_score":7,"review_status":"auto-scanned","risk_level":"red","install":"npx -y @smithery/cli@latest install linxule/mcp-music-studio","author":"linxule","version":"0.0.0","tags":["mcp"],"source":{"type":"smithery","url":"https://github.com/linxule/mcp-music-studio","use_count":1162,"verified":false},"indexed_at":"2026-09-10","tier":"core","trust_score_100":76,"badge_url":"https://www.marketnow.site/api/badge/linxule-mcp-music-studio.svg","page_url":"https://www.marketnow.site/s/linxule-mcp-music-studio"},{"id":"mn-npm2-01488","name":"@mcp-use/ext-apps","slug":"mcp-use-ext-apps","description":"Temporary mcp-use build of MCP Apps SDK PR #720 with role-specific SDK peers.","category":"Developer Tools","price":0,"free":true,"sentinel_score":6,"review_status":"auto-scanned","risk_level":"red","install":"npx -y @mcp-use/ext-apps","author":"tonxxd","version":"1.7.4-pr720.0","tags":["mcp"],"source":{"type":"npm-registry","url":"https://www.npmjs.com/package/@mcp-use/ext-apps","note":"Indexed from the public npm registry with Sentinel Index Heuristics (age, weekly downloads, typosquat distance, injection markers)."},"indexed_at":"2026-09-10","tier":"core","npm_downloads_wk":100,"trust_score_100":72,"badge_url":"https://www.marketnow.site/api/badge/mcp-use-ext-apps.svg","page_url":"https://www.marketnow.site/s/mcp-use-ext-apps"},{"id":"mn-npm2-02674","name":"@raisindb/mcp-ui-client","slug":"raisindb-mcp-ui-client","description":"Tiny, dependency-free, browser-only runtime helper for RaisinDB MCP-UI widgets. Runs inside the widget iframe and abstracts over the ext-apps and MCP-UI host bridges.","category":"Browser Automation","price":0,"free":true,"sentinel_score":5,"review_status":"auto-scanned","risk_level":"red","install":"npx -y @raisindb/mcp-ui-client","author":"labertasch","version":"0.4.5","tags":["mcp"],"source":{"type":"npm-registry","url":"https://www.npmjs.com/package/@raisindb/mcp-ui-client","note":"Indexed from the public npm registry with Sentinel Index Heuristics (age, weekly downloads, typosquat distance, injection markers)."},"indexed_at":"2026-09-10","tier":"core","npm_downloads_wk":100,"trust_score_100":72,"badge_url":"https://www.marketnow.site/api/badge/raisindb-mcp-ui-client.svg","page_url":"https://www.marketnow.site/s/raisindb-mcp-ui-client"},{"id":"mn-npm2-03268","name":"@syntrologie/adapt-mcp","slug":"syntrologie-adapt-mcp","description":"Adaptive MCP — dynamically loads @modelcontextprotocol/ext-apps so interactive MCP app cards can bridge back to the host.","category":"Monitoring","price":0,"free":true,"sentinel_score":5,"review_status":"auto-scanned","risk_level":"red","install":"npx -y @syntrologie/adapt-mcp","author":"syntrologie-eng","version":"2.53.0","tags":["mcp"],"source":{"type":"npm-registry","url":"https://www.npmjs.com/package/@syntrologie/adapt-mcp","note":"Indexed from the public npm registry with Sentinel Index Heuristics (age, weekly downloads, typosquat distance, injection markers)."},"indexed_at":"2026-09-10","tier":"core","npm_downloads_wk":100,"trust_score_100":72,"badge_url":"https://www.marketnow.site/api/badge/syntrologie-adapt-mcp.svg","page_url":"https://www.marketnow.site/s/syntrologie-adapt-mcp"},{"id":"mn-npm2-03283","name":"@onereach/idw-apps","slug":"onereach-idw-apps","description":"IDW adapter around @modelcontextprotocol/ext-apps plus iframe-facing state/actions for MCP Apps and embedded IDW web apps.","category":"Developer Tools","price":0,"free":true,"sentinel_score":5,"review_status":"auto-scanned","risk_level":"red","install":"npx -y @onereach/idw-apps","author":"user.npm","version":"0.1.6","tags":["mcp"],"source":{"type":"npm-registry","url":"https://www.npmjs.com/package/@onereach/idw-apps","note":"Indexed from the public npm registry with Sentinel Index Heuristics (age, weekly downloads, typosquat distance, injection markers)."},"indexed_at":"2026-09-10","tier":"core","npm_downloads_wk":100,"trust_score_100":72,"badge_url":"https://www.marketnow.site/api/badge/onereach-idw-apps.svg","page_url":"https://www.marketnow.site/s/onereach-idw-apps"},{"id":"mn-npm2-03313","name":"@iflow-mcp/hemanth-mcp-ui-server","slug":"iflow-mcp-hemanth-mcp-ui-server","description":"> Sample implementation of [MCP Apps Extension (SEP-1865)](https://github.com/modelcontextprotocol/ext-apps) - interactive HTML/JS UIs through MCP tools.","category":"Version Control","price":0,"free":true,"sentinel_score":6,"review_status":"auto-scanned","risk_level":"red","install":"npx -y @iflow-mcp/hemanth-mcp-ui-server","author":"chatflowdev","version":"1.0.0","tags":["mcp"],"source":{"type":"npm-registry","url":"https://www.npmjs.com/package/@iflow-mcp/hemanth-mcp-ui-server","note":"Indexed from the public npm registry with Sentinel Index Heuristics (age, weekly downloads, typosquat distance, injection markers)."},"indexed_at":"2026-09-10","tier":"core","npm_downloads_wk":100,"trust_score_100":72,"badge_url":"https://www.marketnow.site/api/badge/iflow-mcp-hemanth-mcp-ui-server.svg","page_url":"https://www.marketnow.site/s/iflow-mcp-hemanth-mcp-ui-server"},{"id":"mn-npm2-03526","name":"@mcp-b/ext-apps","slug":"mcp-b-ext-apps","description":"MCP Apps SDK — Enable MCP servers to display interactive user interfaces in conversational clients.","category":"Developer Tools","price":0,"free":true,"sentinel_score":6,"review_status":"auto-scanned","risk_level":"red","install":"npx -y @mcp-b/ext-apps","author":"miguelspizza","version":"1.1.0-http-adapter.0","tags":["mcp"],"source":{"type":"npm-registry","url":"https://www.npmjs.com/package/@mcp-b/ext-apps","note":"Indexed from the public npm registry with Sentinel Index Heuristics (age, weekly downloads, typosquat distance, injection markers)."},"indexed_at":"2026-09-10","tier":"core","npm_downloads_wk":100,"trust_score_100":72,"badge_url":"https://www.marketnow.site/api/badge/mcp-b-ext-apps.svg","page_url":"https://www.marketnow.site/s/mcp-b-ext-apps"},{"id":"mn-npm2-03697","name":"@nimblebrain/synapse","slug":"nimblebrain-synapse","description":"Agent-aware app SDK for the MCP ext-apps protocol","category":"Developer Tools","price":0,"free":true,"sentinel_score":5,"review_status":"auto-scanned","risk_level":"red","install":"npx -y @nimblebrain/synapse","author":"GitHub Actions","version":"0.17.1","tags":["mcp"],"source":{"type":"npm-registry","url":"https://www.npmjs.com/package/@nimblebrain/synapse","note":"Indexed from the public npm registry with Sentinel Index Heuristics (age, weekly downloads, typosquat distance, injection markers)."},"indexed_at":"2026-09-10","tier":"core","npm_downloads_wk":100,"trust_score_100":72,"badge_url":"https://www.marketnow.site/api/badge/nimblebrain-synapse.svg","page_url":"https://www.marketnow.site/s/nimblebrain-synapse"},{"id":"mn-npm2-04114","name":"mcp-ui-ext-apps-openai","slug":"mcp-ui-ext-apps-openai","description":"Unified utility for building apps that work on both OpenAI ChatGPT and MCP Apps platforms","category":"AI/ML","price":0,"free":true,"sentinel_score":6,"review_status":"auto-scanned","risk_level":"red","install":"npx -y mcp-ui-ext-apps-openai","author":"lkm1developer","version":"1.0.4","tags":["mcp"],"source":{"type":"npm-registry","url":"https://www.npmjs.com/package/mcp-ui-ext-apps-openai","note":"Indexed from the public npm registry with Sentinel Index Heuristics (age, weekly downloads, typosquat distance, injection markers)."},"indexed_at":"2026-09-10","tier":"core","npm_downloads_wk":8,"trust_score_100":60,"badge_url":"https://www.marketnow.site/api/badge/mcp-ui-ext-apps-openai.svg","page_url":"https://www.marketnow.site/s/mcp-ui-ext-apps-openai"},{"id":"mn-npm2-04866","name":"@overdraft-protocol/inspect-tools","slug":"overdraft-protocol-inspect-tools","description":"Render real ext-apps HTML panels against a mock MCP host for fast iteration","category":"Developer Tools","price":0,"free":true,"sentinel_score":6,"review_status":"auto-scanned","risk_level":"red","install":"npx -y @overdraft-protocol/inspect-tools","author":"justinborlase","version":"0.1.2","tags":["mcp"],"source":{"type":"npm-registry","url":"https://www.npmjs.com/package/@overdraft-protocol/inspect-tools","note":"Indexed from the public npm registry with Sentinel Index Heuristics (age, weekly downloads, typosquat distance, injection markers)."},"indexed_at":"2026-09-10","tier":"core","npm_downloads_wk":100,"trust_score_100":72,"badge_url":"https://www.marketnow.site/api/badge/overdraft-protocol-inspect-tools.svg","page_url":"https://www.marketnow.site/s/overdraft-protocol-inspect-tools"},{"id":"mn-npm2-12732","name":"mcp-music-studio","slug":"mcp-music-studio","description":"Two-mode MCP music studio: scored composition (ABC notation) and live performance (Strudel live coding). Interactive ext-apps widgets with sheet music rendering, in-place editing and MIDI/WAV export, ","category":"Developer Tools","price":0,"free":true,"sentinel_score":5,"review_status":"auto-scanned","risk_level":"red","install":"npx -y mcp-music-studio","author":"GitHub Actions","version":"0.5.5","tags":["mcp"],"source":{"type":"npm-registry","url":"https://www.npmjs.com/package/mcp-music-studio","note":"Indexed from the public npm registry with Sentinel Index Heuristics (age, weekly downloads, typosquat distance, injection markers)."},"indexed_at":"2026-09-10","tier":"core","npm_downloads_wk":65,"trust_score_100":50,"badge_url":"https://www.marketnow.site/api/badge/mcp-music-studio.svg","page_url":"https://www.marketnow.site/s/mcp-music-studio"},{"id":"mn-np3-00057","name":"@modelcontextprotocol/ext-apps","slug":"np3-modelcontextprotocol-ext-apps","description":"MCP Apps SDK — Enable MCP servers to display interactive user interfaces in conversational clients.","category":"Developer Tools","price":0,"free":true,"sentinel_score":5,"review_status":"auto-scanned","risk_level":"red","install":"npx -y @modelcontextprotocol/ext-apps","author":"Olivier Chafik","version":"2.0.0","tags":["mcp"],"source":{"type":"npm-registry","url":"https://www.npmjs.com/package/@modelcontextprotocol/ext-apps","note":"Official/vendor package indexed from the public npm registry, batch 2026-09-12. Trust = index heuristic (base 40 + log10 weekly downloads). 3093687 weekly downloads.","repo_url":"https://github.com/modelcontextprotocol/ext-apps"},"indexed_at":"2026-09-12","tier":"core","npm_downloads_wk":3093687,"trust_score_100":80,"badge_url":"https://www.marketnow.site/api/badge/np3-modelcontextprotocol-ext-apps.svg","page_url":"https://www.marketnow.site/s/np3-modelcontextprotocol-ext-apps"}],"_links":{"self":"/api/skills?page=1&limit=100&q=ext-apps","next":null,"prev":null}}