crw (us/crw) is an MCP server listed on the M8ven Trust Index. It scores 68 out of 100, grade C. It declares 4 tools. No publisher has claimed this listing.

C
Caution
68/100

crw

Fast, lightweight Firecrawl/Tavily alternative in Rust. Web scraper, crawler & search API with MCP server for AI agents. Drop-in Firecrawl-compatible API (/scrape, /crawl, /search). 2.3x faster than Tavily, 1.5x faster than Firecrawl in 1K-URL benchmarks. 6 MB RAM, single binary. Self-host or use managed cloud.

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.

How we verified

⚡ Live Monitored: not connected

Verified is a snapshot. Live keeps it current, and builds your track record.

⚡ Connect GitHub → continuous verification on every pushwhy connect →

Who stands behind it

us

Source: Glama · also listed on github_topic, github_repo_search

Is this your MCP?

Claim it to get a verified publisher badge, a free copy of our full audit findings, and direct contact for any high-priority issues we find. Or connect your repo for our deepest verification, Live Monitored: read-only, revoke anytime. What we access →

Install from

The grade above is for the source repository. Registries can serve a different version, so we mark the ones we were not able to read.

// key findings
🚨
Secret credentials may flow to a network call
1 flow detected: FASTCRW_API_KEY. We can’t prove the destination matches the brand the credential belongs to.
⚠️
Known vulnerabilities in dependencies: 1 high
Affects packages this MCP installs at runtime. Upgrade or remove the affected dependency.
🔐
You'll be asked for 4 credentials: CRW_API_KEY, JUDGE_API_KEY, FASTCRW_API_KEY, FIRECRAWL_API_KEY
These are read from process.env at runtime. Make sure you trust where they’ll be sent.
// tools this server exposes4 tools

These names and descriptions are the publisher's own, read from the source code. We print them as written. Our assessment is the findings above, not this list.

crwscrapewebsite
crwcrawlwebsite
crwmapwebsite
crwsearchweb
// known CVEs in dependencies1 high

Disclosed vulnerabilities in this server's declared npm dependencies (via OSV). Whether each is reachable depends on the installed versions.

highmarked@18.0.0GHSA-6v9c-7cg6-27q7

Marked Vulnerable to OOM Denial of Service via Infinite Recursion in marked Tokenizer

Depend on this server? Get alerted when its CVEs change.Watch this server free →
// environment variables
To run this server yourself, you supply these values. They go in your own MCP client configuration and stay on your machine. The secret label means the value is sensitive, not that the server mishandles it.
configCRW_BASE
configCRW_API_URL
🔐 secretCRW_API_KEY
configJUDGE_BASE_URL
🔐 secretJUDGE_API_KEY
configJUDGE_MODEL
configBENCH_SEARCH_LIMIT
configBENCH_TIMEOUT
configBENCH_CONCURRENCY
configBENCH_MAX_URLS
configDIAG_OUT
configDIAG_URLS_FILE
configDIAG_FILTER
configDIAG_DEBUG
configBENCH_RESULTS_PATH
configFASTCRW_BASE_URL
🔐 secretFASTCRW_API_KEY
configFIRECRAWL_BASE
🔐 secretFIRECRAWL_API_KEY
configCRW_URL
configCONFORMANCE_SKIP
configCRW_BINARY
configCRW_LOCAL
// quality suggestions

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

4/4 tools missing one or more hints — crwscrapewebsite (missing: readOnlyHint, destructiveHint, idempotentHint, openWorldHint); crwcrawlwebsite (missing: readOnlyHint, destructiveHint, idempotentHint, openWorldHint); crwmapwebsite (missing: readOnlyHint, destructiveHint, idempotentHint, openWorldHint), +1 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.

Tool test coverage

Only 0/4 tools referenced in tests (0%)

Write tests that reference each tool by name so every tool has at least one test.

Production dependencies are patched

0 critical, 1 high severity in production deps — marked@18.0.0 (high)

Run npm audit fix, or upgrade the affected packages to a non-vulnerable version.

Claim the listing to review these findings one by one and send us a correction where you disagree, straight to the team. Claiming also means we tell you when the grade moves, and reach you first if we find anything urgent.

// full audit trail
The findings above are the summary. The full trail, every check we ran, each deduction, the network hosts observed and the dependency advisories, goes to verified publishers, along with an alert whenever a new one lands. Verified publishers can also review each finding and dispute it in one click. Publisher corrections have sharpened several of our checks this month, because the maintainer knows the codebase better than any scanner.
// improvement guidance — verified publishers only
We have 4 concrete improvements we can share with the publisher of this MCP. Each comes with specific guidance to raise the trust score.
// embed badge in your README
[![M8ven Verified](https://m8ven.ai/badge/mcp/us/crw?variant=verified)](https://m8ven.ai/mcp/us/crw)
Shows verification status without the grade. Want the grade badge instead? Remove ?variant=verified from the URL.
commit: e8eea02a0339b52a19f8a0d04f252003f5408974
code hash: 43589f9ca77349a5d0f6372de40c3d28aa0f50176657f853455621a31ab10e09
view raw JSON →
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