claude-webcache (theYahia/claude-webcache) 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.
Cross-session WebFetch cache for Claude Code. Persists fetched docs across sessions via SQLite (7-day TTL) so the same URL+prompt in any new session is an instant cache hit instead of re-fetching
Caution. Specific findings reduced this grade. They are listed on the page. Grades reflect the full trust pyramid: code, verification depth, and reputation. New projects cap at C until adoption is earned.
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theYahia
Source: 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.
Model Context Protocol (MCP) TypeScript SDK does not enable DNS rebinding protection by default
WEBCACHE_AUTOREADManual lookup is still available if you want it: call cached_fetch(url, prompt) (or cached_search(query)) — returns the cached text, or [CACHE_MISS] … if absent. Disable auto-read with =0.WEBCACHE_COMPRESSoff 1 enables gzip on responses ≥4 KB. Stored as base64 in TEXT column. Existing uncompressed rows read fine (BC).WEBCACHE_DEBUGoff 1 enables verbose tracing in the auto-cache hook.WEBCACHE_DOMAIN_TTLnone Per-domain TTL JSON: {"news.com":1,"reuters.com":1,"arxiv.org":0}. Days; 0 = unlimited. Suffix-matches subdomains. Overrides global TTL when matched.WEBCACHE_MAX_OUTPUT_MB10 Reject WebFetch responses larger than N MB. Stats track oversize_skipped counter and last_oversize_url.WEBCACHE_MAX_SIZE_MBunlimited Above this size, LRU eviction drops ~20% of oldest-by-last_hit_at entries on next write (debounced every 100 writes).WEBCACHE_NAMESPACEgosdelo claude # cache writes/reads scoped to ns "gosdelo"WEBCACHE_QUIEToff 1 suppresses hook stderr output (file log at ~/.webcache/hook.log still written).WEBCACHE_SEARCH_TTL_HOURS6 TTL for cached WebSearch results (the websearch namespace). Search rankings drift, so this is short by default. 0 = never expire.WEBCACHE_STRICT_REDACToff 1 makes the cache key use the redacted URL — collides per endpoint regardless of token value. See Security above.WEBCACHE_TTL_DAYSunlimited Global TTL in days. 0 or unset = unlimited.Tool annotations
No tools have read-only/destructive annotations
Add readOnlyHint or destructiveHint annotations to every tool so hosts can warn users before invoking.
All four hints declared on every tool
9/9 tools missing one or more hints — cached_fetch (missing: readOnlyHint, destructiveHint, idempotentHint, openWorldHint); cached_search (missing: readOnlyHint, destructiveHint, idempotentHint, openWorldHint); cache_store (missing: readOnlyHint, destructiveHint, idempotentHint, openWorldHint), +6 more. 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.
Shell command execution
8 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, 1 high severity in production deps — @modelcontextprotocol/sdk@1.0.0 (high)
Run npm audit fix, or upgrade the affected packages to a non-vulnerable version.
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