Visus Mcp
Let agents fetch and read web pages through a sanitizer that blocks prompt injection and strips sensitive PII from content.
Overview
visus-mcp is a MCP server for the Ship phase that provides security-first web access for agents by sanitizing pages, blocking injection, and redacting PII.
What is this MCP server?
- npm stdio package visus-mcp v0.6.1 for local MCP wiring
- Sanitizes HTML/text, blocks injection patterns, and redacts PII before the model sees content
- Configurable VISUS_TIMEOUT_MS (default 10000) and VISUS_MAX_CONTENT_KB (default 512)
- Optional VISUS_RENDERER_URL hook documented for future managed Lambda renderer
- Security-first alternative to piping raw browser dumps into Claude
- Package version 0.6.1 on npm identifier visus-mcp
- Default fetch timeout 10000 ms via VISUS_TIMEOUT_MS
- Default max content 512 KB via VISUS_MAX_CONTENT_KB
Community signal: 1 GitHub stars.
What problem does it solve?
Letting agents read the open web raw invites prompt injection and accidental PII leakage into your chat and logs.
Who is it for?
Solo builders who want local npm MCP web fetch with injection and PII guardrails for Claude-driven research.
Skip if: Heavy scraping at scale, CAPTCHA-heavy sites needing full browser automation, or teams that refuse any local MCP stdio install.
What do I get? / Deliverables
Web fetches return sanitized, size-bounded text so agents can research safely without swallowing hidden instructions or secrets.
- Sanitized page text safe for model context
- Blocked injection attempts on fetched content
- PII-redacted excerpts within configured size limits
Recommended MCP Servers
Journey fit
How it compares
Security-sanitized web fetch MCP, not an unconstrained browser automation suite or marketing SEO tool.
Common Questions / FAQ
Who is visus-mcp for?
Developers using Claude or MCP agents who need to read external URLs without exposing the model to injection or PII.
When should I use visus-mcp?
Use it whenever an agent must fetch user-supplied or untrusted links—docs, forums, support pages—during build or ship workflows.
How do I add visus-mcp to my agent?
Install the npm package visus-mcp, configure it as a stdio MCP server in Claude Code or Cursor, and optionally set VISUS_TIMEOUT_MS and VISUS_MAX_CONTENT_KB.