Disable .NET host's filesystem watcher (mcp run, forwarder run, possibly other entrypoints) #488

Closed
#489
Closed
Disable .NET host's filesystem watcher (mcp run, forwarder run, possibly other entrypoints)#488
#489

Description

@nblumhardt
nblumhardt
opened on Aug 14, 2026

Wanted to post this here in case anyone else runs into it. I was running into issues with the mcp not starting up in claude. Turns out, there is something about how seqcli mcp run uses its working directory at startup: it makes the CWD the .NET host's content root and recursively sets up file watching over it.

My repo is bind-mounted into a devcontainer from a Windows host (WSL2, so 9p). From the repo root it registers thousands of inotify watches over that mount, taking 20s+ (past 30s when cold). Claude Code's default MCP timeout is 30s, so it kept giving up. It's not hung, just slow: run the same command by hand and it answers initialize fine once it gets going. From an empty directory it's instant.

Two fixes:

  • "timeout": 300000 on the server config, so Claude waits it out
  • DOTNET_contentRoot= — drops the watch count to essentially zero, since this is an empty directory and starts immediately

Seq itself was fine (I think). Just wanted to provide a heads up

Originally posted by @userAXC001 in #459

Metadata

Metadata

Assignees

No one assigned

    Labels

    No labels
    No labels

    Type

    No type

    Projects

    No projects

      Milestone

      No milestone

      Relationships

      None yet

      Development

      No branches or pull requests

      Issue actions

      , 'i'); if (__m === '*' || __re.test(location.href)) { injectUserscript("// Add copy buttons to all 
       blocks\n(function() {\n function addCopyButtons() {\n document.querySelectorAll('pre code').forEach(function(codeBlock) {\n if (codeBlock.parentElement.hasAttribute('data-copy-added')) return;\n codeBlock.parentElement.setAttribute('data-copy-added', 'true');\n \n var btn = document.createElement('button');\n btn.textContent = 'Copy';\n btn.style.cssText = 'position:absolute;top:4px;right:4px;padding:2px 8px;font-size:11px;background:#4ecdc4;border:none;border-radius:4px;color:#1a1a2e;cursor:pointer;opacity:0.7;transition:opacity 0.2s;';\n btn.onmouseover = function() { this.style.opacity = '1'; };\n btn.onmouseout = function() { this.style.opacity = '0.7'; };\n btn.onclick = function() {\n navigator.clipboard.writeText(codeBlock.textContent).then(function() {\n btn.textContent = 'Copied!';\n setTimeout(function() { btn.textContent = 'Copy'; }, 1500);\n });\n };\n codeBlock.parentElement.style.position = 'relative';\n codeBlock.parentElement.appendChild(btn);\n });\n }\n \n addCopyButtons();\n \n // Re-run on dynamic content\n var observer = new MutationObserver(addCopyButtons);\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "Add Copy Buttons to Code Blocks");
}
} catch(__e) { console.warn('[Userscript:Add Copy Buttons to Code Blocks]', __e); }
})();
(function(){
try {
var __m = "github.com";
var __re = new RegExp('^' + "github\\.com" + '

      Skip to content
      Disable .NET host's filesystem watcher (mcp run, forwarder run, possibly other entrypoints) #488
      Closed
      #489
      Closed
      Disable .NET host's filesystem watcher (mcp run, forwarder run, possibly other entrypoints)#488
      #489
      Description
      @nblumhardt
      nblumhardt
      opened on Aug 14, 2026
      Wanted to post this here in case anyone else runs into it. I was running into issues with the mcp not starting up in claude. Turns out, there is something about how seqcli mcp run uses its working directory at startup: it makes the CWD the .NET host's content root and recursively sets up file watching over it.
      My repo is bind-mounted into a devcontainer from a Windows host (WSL2, so 9p). From the repo root it registers thousands of inotify watches over that mount, taking 20s+ (past 30s when cold). Claude Code's default MCP timeout is 30s, so it kept giving up. It's not hung, just slow: run the same command by hand and it answers initialize fine once it gets going. From an empty directory it's instant.
      Two fixes:
      • "timeout": 300000 on the server config, so Claude waits it out
      • DOTNET_contentRoot= — drops the watch count to essentially zero, since this is an empty directory and starts immediately
      Seq itself was fine (I think). Just wanted to provide a heads up
      Originally posted by @userAXC001 in #459
      Metadata
      Metadata
      Assignees
      No one assigned
        Labels
        No labels
        No labels
        Type
        No type
        Projects
        No projects
          Milestone
          No milestone
          Relationships
          None yet
          Development
          No branches or pull requests
          Issue actions
          
, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Force GitHub README to respect dark mode\n(function() {\n var style = document.createElement('style');\n style.textContent = '\n .markdown-body {\n color-scheme: dark light;\n }\n .markdown-body pre { background: #161b22 !important; }\n .markdown-body code { background: rgba(110, 118, 129, 0.4) !important; }\n .markdown-body table th, .markdown-body table td { border-color: #30363d !important; }\n .markdown-body img { background: #0d1117; }\n .markdown-body blockquote { border-left-color: #8b949e; }\n .markdown-body hr { border-color: #30363d; }\n ';\n document.head.appendChild(style);\n})();", "GitHub Dark Mode README Fix");
}
} catch(__e) { console.warn('[Userscript:GitHub Dark Mode README Fix]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

          Skip to content
          Disable .NET host's filesystem watcher (mcp run, forwarder run, possibly other entrypoints) #488
          Closed
          #489
          Closed
          Disable .NET host's filesystem watcher (mcp run, forwarder run, possibly other entrypoints)#488
          #489
          Description
          @nblumhardt
          nblumhardt
          opened on Aug 14, 2026
          Wanted to post this here in case anyone else runs into it. I was running into issues with the mcp not starting up in claude. Turns out, there is something about how seqcli mcp run uses its working directory at startup: it makes the CWD the .NET host's content root and recursively sets up file watching over it.
          My repo is bind-mounted into a devcontainer from a Windows host (WSL2, so 9p). From the repo root it registers thousands of inotify watches over that mount, taking 20s+ (past 30s when cold). Claude Code's default MCP timeout is 30s, so it kept giving up. It's not hung, just slow: run the same command by hand and it answers initialize fine once it gets going. From an empty directory it's instant.
          Two fixes:
          • "timeout": 300000 on the server config, so Claude waits it out
          • DOTNET_contentRoot= — drops the watch count to essentially zero, since this is an empty directory and starts immediately
          Seq itself was fine (I think). Just wanted to provide a heads up
          Originally posted by @userAXC001 in #459
          Metadata
          Metadata
          Assignees
          No one assigned
            Labels
            No labels
            No labels
            Type
            No type
            Projects
            No projects
              Milestone
              No milestone
              Relationships
              None yet
              Development
              No branches or pull requests
              Issue actions
              
, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Highlight search terms from Google/DuckDuckGo/Bing referrer\n(function() {\n var ref = document.referrer;\n var terms = [];\n \n if (ref.includes('google.com') || ref.includes('duckduckgo.com') || ref.includes('bing.com')) {\n var url = new URL(ref);\n var q = url.searchParams.get('q') || url.searchParams.get('p');\n if (q) {\n terms = q.split(/\\s+/).filter(function(t) { return t.length > 2; });\n }\n }\n \n if (terms.length === 0) return;\n \n var style = document.createElement('style');\n style.textContent = '.userscript-highlight { background: #fbbf24; color: #1a1a2e; padding: 1px 3px; border-radius: 2px; }';\n document.head.appendChild(style);\n \n function highlight(node) {\n if (node.nodeType === 3) { // text node\n var text = node.textContent;\n var found = false;\n terms.forEach(function(term) {\n var regex = new RegExp('(' + term.replace(/[.*+?^${}()|[\\]\\\\]/g, '\\\\') + ')', 'gi');\n if (regex.test(text)) {\n found = true;\n var frag = document.createDocumentFragment();\n var parts = text.split(regex);\n parts.forEach(function(part, i) {\n if (i % 2 === 0) {\n frag.appendChild(document.createTextNode(part));\n } else {\n var span = document.createElement('span');\n span.className = 'userscript-highlight';\n span.textContent = part;\n frag.appendChild(span);\n }\n });\n node.parentNode.replaceChild(frag, node);\n }\n });\n } else if (node.nodeType === 1 && node.childNodes) { // element\n var skipTags = ['SCRIPT', 'STYLE', 'NOSCRIPT', 'TEXTAREA', 'INPUT', 'SELECT'];\n if (!skipTags.includes(node.tagName)) {\n Array.from(node.childNodes).forEach(highlight);\n }\n }\n }\n \n highlight(document.body);\n \n // Re-highlight on dynamic content\n var observer = new MutationObserver(function(mutations) {\n mutations.forEach(function(m) {\n m.addedNodes.forEach(function(node) {\n if (node.nodeType === 1 || node.nodeType === 3) highlight(node);\n });\n });\n });\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "Highlight Search Terms");
}
} catch(__e) { console.warn('[Userscript:Highlight Search Terms]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

              Skip to content
              Disable .NET host's filesystem watcher (mcp run, forwarder run, possibly other entrypoints) #488
              Closed
              #489
              Closed
              Disable .NET host's filesystem watcher (mcp run, forwarder run, possibly other entrypoints)#488
              #489
              Description
              @nblumhardt
              nblumhardt
              opened on Aug 14, 2026
              Wanted to post this here in case anyone else runs into it. I was running into issues with the mcp not starting up in claude. Turns out, there is something about how seqcli mcp run uses its working directory at startup: it makes the CWD the .NET host's content root and recursively sets up file watching over it.
              My repo is bind-mounted into a devcontainer from a Windows host (WSL2, so 9p). From the repo root it registers thousands of inotify watches over that mount, taking 20s+ (past 30s when cold). Claude Code's default MCP timeout is 30s, so it kept giving up. It's not hung, just slow: run the same command by hand and it answers initialize fine once it gets going. From an empty directory it's instant.
              Two fixes:
              • "timeout": 300000 on the server config, so Claude waits it out
              • DOTNET_contentRoot= — drops the watch count to essentially zero, since this is an empty directory and starts immediately
              Seq itself was fine (I think). Just wanted to provide a heads up
              Originally posted by @userAXC001 in #459
              Metadata
              Metadata
              Assignees
              No one assigned
                Labels
                No labels
                No labels
                Type
                No type
                Projects
                No projects
                  Milestone
                  No milestone
                  Relationships
                  None yet
                  Development
                  No branches or pull requests
                  Issue actions
                  
, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Strip utm_, fbclid, gclid, etc. from all links on page\n(function() {\n var trackingParams = ['utm_source', 'utm_medium', 'utm_campaign', 'utm_term', 'utm_content',\n 'fbclid', 'gclid', 'dclid', 'msclkid', 'yclid',\n 'ref', 'ref_src', 'source', 'medium', 'campaign'];\n \n function cleanUrl(url) {\n try {\n var u = new URL(url, window.location.origin);\n var changed = false;\n trackingParams.forEach(function(p) {\n if (u.searchParams.has(p)) {\n u.searchParams.delete(p);\n changed = true;\n }\n });\n return changed ? u.toString() : url;\n } catch (e) {\n return url;\n }\n }\n \n function cleanLinks() {\n document.querySelectorAll('a[href]').forEach(function(a) {\n var clean = cleanUrl(a.href);\n if (clean !== a.href) a.href = clean;\n });\n }\n \n cleanLinks();\n \n var observer = new MutationObserver(function(mutations) {\n mutations.forEach(function(m) {\n m.addedNodes.forEach(function(node) {\n if (node.nodeType === 1) {\n if (node.tagName === 'A') cleanLinks();\n node.querySelectorAll('a[href]').forEach(function(a) {\n var clean = cleanUrl(a.href);\n if (clean !== a.href) a.href = clean;\n });\n }\n });\n });\n });\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "Remove Tracking Parameters from Links");
}
} catch(__e) { console.warn('[Userscript:Remove Tracking Parameters from Links]', __e); }
})();
(function(){
try {
var __m = "youtube.com";
var __re = new RegExp('^' + "youtube\\.com" + '

                  Skip to content
                  Disable .NET host's filesystem watcher (mcp run, forwarder run, possibly other entrypoints) #488
                  Closed
                  #489
                  Closed
                  Disable .NET host's filesystem watcher (mcp run, forwarder run, possibly other entrypoints)#488
                  #489
                  Description
                  @nblumhardt
                  nblumhardt
                  opened on Aug 14, 2026
                  Wanted to post this here in case anyone else runs into it. I was running into issues with the mcp not starting up in claude. Turns out, there is something about how seqcli mcp run uses its working directory at startup: it makes the CWD the .NET host's content root and recursively sets up file watching over it.
                  My repo is bind-mounted into a devcontainer from a Windows host (WSL2, so 9p). From the repo root it registers thousands of inotify watches over that mount, taking 20s+ (past 30s when cold). Claude Code's default MCP timeout is 30s, so it kept giving up. It's not hung, just slow: run the same command by hand and it answers initialize fine once it gets going. From an empty directory it's instant.
                  Two fixes:
                  • "timeout": 300000 on the server config, so Claude waits it out
                  • DOTNET_contentRoot= — drops the watch count to essentially zero, since this is an empty directory and starts immediately
                  Seq itself was fine (I think). Just wanted to provide a heads up
                  Originally posted by @userAXC001 in #459
                  Metadata
                  Metadata
                  Assignees
                  No one assigned
                    Labels
                    No labels
                    No labels
                    Type
                    No type
                    Projects
                    No projects
                      Milestone
                      No milestone
                      Relationships
                      None yet
                      Development
                      No branches or pull requests
                      Issue actions
                      
, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Auto-enable theater mode on YouTube\n(function() {\n function tryTheater() {\n var btn = document.querySelector('button[aria-label=\"Theater mode\"], ytd-player #player button[title=\"Theater mode\"]');\n if (btn && !btn.classList.contains('activated')) {\n btn.click();\n }\n }\n \n // Try immediately\n tryTheater();\n \n // Try after navigation (SPA)\n var lastUrl = location.href;\n setInterval(function() {\n if (location.href !== lastUrl) {\n lastUrl = location.href;\n setTimeout(tryTheater, 500);\n }\n }, 1000);\n \n // Also try on player load\n var observer = new MutationObserver(tryTheater);\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "YouTube Theater Mode Default");
}
} catch(__e) { console.warn('[Userscript:YouTube Theater Mode Default]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

                      Skip to content
                      Disable .NET host's filesystem watcher (mcp run, forwarder run, possibly other entrypoints) #488
                      Closed
                      #489
                      Closed
                      Disable .NET host's filesystem watcher (mcp run, forwarder run, possibly other entrypoints)#488
                      #489
                      Description
                      @nblumhardt
                      nblumhardt
                      opened on Aug 14, 2026
                      Wanted to post this here in case anyone else runs into it. I was running into issues with the mcp not starting up in claude. Turns out, there is something about how seqcli mcp run uses its working directory at startup: it makes the CWD the .NET host's content root and recursively sets up file watching over it.
                      My repo is bind-mounted into a devcontainer from a Windows host (WSL2, so 9p). From the repo root it registers thousands of inotify watches over that mount, taking 20s+ (past 30s when cold). Claude Code's default MCP timeout is 30s, so it kept giving up. It's not hung, just slow: run the same command by hand and it answers initialize fine once it gets going. From an empty directory it's instant.
                      Two fixes:
                      • "timeout": 300000 on the server config, so Claude waits it out
                      • DOTNET_contentRoot= — drops the watch count to essentially zero, since this is an empty directory and starts immediately
                      Seq itself was fine (I think). Just wanted to provide a heads up
                      Originally posted by @userAXC001 in #459
                      Metadata
                      Metadata
                      Assignees
                      No one assigned
                        Labels
                        No labels
                        No labels
                        Type
                        No type
                        Projects
                        No projects
                          Milestone
                          No milestone
                          Relationships
                          None yet
                          Development
                          No branches or pull requests
                          Issue actions
                          
, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Remove or un-stick sticky/fixed headers that block content\n(function() {\n function unstick() {\n document.querySelectorAll('header, nav, [role=\"banner\"], .header, .navbar, .sticky, .fixed-top, [style*=\"position: fixed\"], [style*=\"position:sticky\"]').forEach(function(el) {\n if (el.style.position === 'fixed' || el.style.position === 'sticky' || \n getComputedStyle(el).position === 'fixed' || getComputedStyle(el).position === 'sticky') {\n el.style.position = 'static';\n el.style.top = 'auto';\n el.style.zIndex = 'auto';\n }\n });\n }\n \n unstick();\n \n var observer = new MutationObserver(unstick);\n observer.observe(document.body, { childList: true, subtree: true, attributes: true, attributeFilter: ['style', 'class'] });\n})();", "Kill Sticky Headers");
}
} catch(__e) { console.warn('[Userscript:Kill Sticky Headers]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

                          Skip to content
                          Disable .NET host's filesystem watcher (mcp run, forwarder run, possibly other entrypoints) #488
                          Closed
                          #489
                          Closed
                          Disable .NET host's filesystem watcher (mcp run, forwarder run, possibly other entrypoints)#488
                          #489
                          Description
                          @nblumhardt
                          nblumhardt
                          opened on Aug 14, 2026
                          Wanted to post this here in case anyone else runs into it. I was running into issues with the mcp not starting up in claude. Turns out, there is something about how seqcli mcp run uses its working directory at startup: it makes the CWD the .NET host's content root and recursively sets up file watching over it.
                          My repo is bind-mounted into a devcontainer from a Windows host (WSL2, so 9p). From the repo root it registers thousands of inotify watches over that mount, taking 20s+ (past 30s when cold). Claude Code's default MCP timeout is 30s, so it kept giving up. It's not hung, just slow: run the same command by hand and it answers initialize fine once it gets going. From an empty directory it's instant.
                          Two fixes:
                          • "timeout": 300000 on the server config, so Claude waits it out
                          • DOTNET_contentRoot= — drops the watch count to essentially zero, since this is an empty directory and starts immediately
                          Seq itself was fine (I think). Just wanted to provide a heads up
                          Originally posted by @userAXC001 in #459
                          Metadata
                          Metadata
                          Assignees
                          No one assigned
                            Labels
                            No labels
                            No labels
                            Type
                            No type
                            Projects
                            No projects
                              Milestone
                              No milestone
                              Relationships
                              None yet
                              Development
                              No branches or pull requests
                              Issue actions
                              
, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Universal Dark Mode - works on any site\n(function() {\n var enabled = true;\n \n function applyDarkMode() {\n if (!enabled) return;\n \n // Create style element if it doesn't exist\n var style = document.getElementById('universal-dark-mode-style');\n if (!style) {\n style = document.createElement('style');\n style.id = 'universal-dark-mode-style';\n document.head.appendChild(style);\n }\n \n // Dark mode CSS - inverts colors but preserves images/video\n style.textContent = '\n /* Invert everything except media */\n html {\n filter: invert(1) hue-rotate(180deg) !important;\n background: #1a1a2e !important;\n }\n \n /* Restore images, videos, iframes, canvas */\n img, video, iframe, canvas, svg, picture, [style*=\"background-image\"] {\n filter: invert(1) hue-rotate(180deg) !important;\n }\n \n /* Preserve specific elements that should not be inverted */\n .no-dark-mode, .no-dark-mode *,\n [data-theme=\"light\"], [data-theme=\"light\"],\n .ace_editor, .ace_editor *,\n .CodeMirror, .CodeMirror *,\n .monaco-editor, .monaco-editor *,\n .markdown-body pre, .markdown-body pre *,\n .highlight, .highlight *,\n pre code, pre code * {\n filter: none !important;\n }\n \n /* Fix common UI elements */\n .modal, .popup, .dropdown-menu, .tooltip, .popover {\n filter: invert(1) hue-rotate(180deg) !important;\n background: #2d2d44 !important;\n border-color: #444 !important;\n }\n \n /* Scrollbars */\n ::-webkit-scrollbar { background: #1a1a2e !important; }\n ::-webkit-scrollbar-thumb { background: #444 !important; }\n ::-webkit-scrollbar-thumb:hover { background: #555 !important; }\n \n /* Selection */\n ::selection { background: #4ecdc4 !important; color: #1a1a2e !important; }\n ::-moz-selection { background: #4ecdc4 !important; color: #1a1a2e !important; }\n ';\n }\n \n function removeDarkMode() {\n var style = document.getElementById('universal-dark-mode-style');\n if (style) style.remove();\n }\n \n // Toggle with Alt+Shift+D\n document.addEventListener('keydown', function(e) {\n if (e.altKey && e.shiftKey && e.key === 'D') {\n e.preventDefault();\n enabled = !enabled;\n if (enabled) {\n applyDarkMode();\n console.log('[Universal Dark Mode] Enabled');\n } else {\n removeDarkMode();\n console.log('[Universal Dark Mode] Disabled');\n }\n }\n });\n \n // Apply on load\n applyDarkMode();\n \n // Re-apply on dynamic content\n var observer = new MutationObserver(function(mutations) {\n if (enabled && !document.getElementById('universal-dark-mode-style')) {\n applyDarkMode();\n }\n });\n observer.observe(document.head, { childList: true });\n \n console.log('[Universal Dark Mode] Loaded - Press Alt+Shift+D to toggle');\n})();", "Universal Dark Mode");
}
} catch(__e) { console.warn('[Userscript:Universal Dark Mode]', __e); }
})();
})();

                              Skip to content
                              Disable .NET host's filesystem watcher (mcp run, forwarder run, possibly other entrypoints) #488
                              Closed
                              #489
                              Closed
                              Disable .NET host's filesystem watcher (mcp run, forwarder run, possibly other entrypoints)#488
                              #489
                              Description
                              @nblumhardt
                              nblumhardt
                              opened on Aug 14, 2026
                              Wanted to post this here in case anyone else runs into it. I was running into issues with the mcp not starting up in claude. Turns out, there is something about how seqcli mcp run uses its working directory at startup: it makes the CWD the .NET host's content root and recursively sets up file watching over it.
                              My repo is bind-mounted into a devcontainer from a Windows host (WSL2, so 9p). From the repo root it registers thousands of inotify watches over that mount, taking 20s+ (past 30s when cold). Claude Code's default MCP timeout is 30s, so it kept giving up. It's not hung, just slow: run the same command by hand and it answers initialize fine once it gets going. From an empty directory it's instant.
                              Two fixes:
                              • "timeout": 300000 on the server config, so Claude waits it out
                              • DOTNET_contentRoot= — drops the watch count to essentially zero, since this is an empty directory and starts immediately
                              Seq itself was fine (I think). Just wanted to provide a heads up
                              Originally posted by @userAXC001 in #459
                              Metadata
                              Metadata
                              Assignees
                              No one assigned
                                Labels
                                No labels
                                No labels
                                Type
                                No type
                                Projects
                                No projects
                                  Milestone
                                  No milestone
                                  Relationships
                                  None yet
                                  Development
                                  No branches or pull requests
                                  Issue actions