Intercept (bighippoman/intercept-mcp) is an MCP server listed on the M8ven Trust Index. M8ven has not graded it: we have no way to read this server ourselves. No publisher has claimed this listing.
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bighippoman
Source: PulseMCP · also listed on Glama
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Disclosed vulnerabilities in this server's declared npm dependencies (via OSV). Whether each is reachable depends on the installed versions.
When Vitest UI server is listening, arbitrary file can be read and executed
Undici: Malicious WebSocket 64-bit length overflows parser and crashes the client
Undici has Unhandled Exception in WebSocket Client Due to Invalid server_max_window_bits Validation
Undici has Unbounded Memory Consumption in WebSocket permessage-deflate Decompression
Undici has an HTTP Request/Response Smuggling issue
ADMIN_SECRETALL_PROXYBRAVE_API_KEYUses Brave Search API if is set, then SearXNG if SEARXNG_URL is set, then DuckDuckGo as an unreliable last resort. freshness and page are ignored by the DuckDuckGo fallback.CF_ACCOUNT_IDNo Cloudflare account ID (required if CF_API_TOKEN is set)CF_API_TOKENNo Cloudflare API token with "Browser Rendering - Edit" permissionFLARESOLVERR_URLNo URL of a [FlareSolverr](https://github.com/FlareSolverr/FlareSolverr) instance (e.g. http://localhost:8191) to solve Cloudflare/DDoS-Guard challengesGITHUB_TOKENThe GitHub API endpoints work unauthenticated (60 requests/hour). Set to raise the limit.HTTPS_PROXY/ HTTP_PROXY No Standard proxy passthrough — routes all outbound fetches (including stealth) through the proxy. Honors NO_PROXY.HTTP_PROXYHTTPS_PROXY / No Standard proxy passthrough — routes all outbound fetches (including stealth) through the proxy. Honors NO_PROXY.INTERCEPT_AUTHNo JSON map of domain → headers/cookies, to fetch content you're logged in to (see [Per-domain authentication](#per-domain-authentication-intercept_auth))INTERCEPT_CACHE_READ_ONLYOpt out entirely with INTERCEPT_SHARED_CACHE=false, or use read-only mode (consume but never contribute) with =true.INTERCEPT_PROXIESNo Comma/space-separated list of HTTP(S) proxies to rotate across, with automatic retry through the next proxy on a blocked response. Takes precedence over HTTPS_PROXY.INTERCEPT_SHARED_CACHEOpt out entirely with =false, or use read-only mode (consume but never contribute) with INTERCEPT_CACHE_READ_ONLY=true.SEARXNG_URLUses Brave Search API if BRAVE_API_KEY is set, then SearXNG if is set, then DuckDuckGo as an unreliable last resort. freshness and page are ignored by the DuckDuckGo fallback.USE_STEALTH_FETCHNo Set to true to enable stealth fetcher (see warning below)WEB_UNLOCKER_URLNo GET template (with a {url} placeholder and your API key) for a commercial web-unlocker like ScrapingBee/ScraperAPI/ZenRows — the paid last resort for the hardest sitesall_proxyhttp_proxyhttps_proxyTool annotations
5/6 tools have annotations
Add readOnlyHint or destructiveHint annotations to every tool so hosts can warn users before invoking.
All four hints declared on every tool
1/6 tools missing one or more hints — fetch (missing: readOnlyHint, destructiveHint, idempotentHint, openWorldHint). OpenAI's directory rejects tools where any of the four hints are missing or non-boolean.
For every tool, set all four hints (readOnlyHint, destructiveHint, idempotentHint, openWorldHint) to explicit true/false values that match the handler’s actual behaviour.
Tool handlers catch errors
4/6 tool handlers wrap calls in try/catch (67%)
Wrap each tool handler body in try/catch and return a structured error response.
Shell command execution
5 child_process calls — runs shell commands
Prefer library functions over shell-outs. If you must shell out, ensure all inputs are properly escaped.
Production dependencies are patched
0 critical, 3 high severity in production deps — undici@7.18.0 (high), undici@7.18.0 (high)
Run npm audit fix, or upgrade the affected packages to a non-vulnerable version.
Dev dependencies
1 critical/high in dev-only deps (does not ship to users)
Upgrade dev dependencies when convenient.
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