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Directory / Clawhard Dev Tools
Clawhard Dev Tools
by dev.clawhard.com · https://dev.clawhard.com/mcp
Exact developer checks: email DNS, Supabase RLS, cron, JSON, contrast, time zones, npm/PyPI packages
13 of 13 checks · 9 Nov 2026
At a glance
- Runs where
- On their server. What you send to it goes to them.
- What you need
- Nothing: it answered without a login
- Tools
- 19 tools
- Its own safety labels
- 19 read-only
- Memory it takes
- About 6,000 tokens of your AI's memory, just for its tool descriptions
- Largest answer
- About 8 KB in our test
- Speed
- Average answer in our test: 49 ms
Tokens are an estimate: the characters in its tool names, descriptions and inputs, divided by 4. The exact number depends on your AI model. Safety labels are what the server says about itself. From our latest test, 9 Nov 2026.
Is Clawhard Dev Tools MCP server safe?
- None of the hidden-instruction wordings we know were found in its 19 tool descriptions.
- Its error messages showed no secrets or internal details.
- All 19 of its tools are labeled read-only.
- Overall it scored 96/100 on 9 Nov 2026.
A test can only see what the server shows from outside, not what it does with your data behind the scenes. Connect servers from makers you trust.
What this test does not check
- Its source code and packages.
- What a tool quietly does behind the scenes, such as writing a file or calling another service.
- Instructions hidden inside live tool answers. We only look for those in tool descriptions.
- Hidden instructions worded in a way our list doesn't know yet.
- Tools that could change something. Those are read, never run.
What QAmcp can and can't see · How to tell if an MCP server is safe · Hidden instructions · Prompt injection
Known security advisories
It lists no public code, so there is nothing to look up in GitHub Security Advisories or OSV.dev. QAmcp tests how a server behaves. It does not scan source code.
What it can do
19 tools, in the server's own words.
stamp_check_email_domainread-onlyUse when the user asks why their email goes to spam, whether their domain is set up to send email, or before they launch a newsletter, cold outreach, transacti…
stamp_check_dns_recordread-onlyUse when you or the user are about to publish or edit an SPF, DMARC or DKIM TXT record, for example after writing a new SPF record that adds a sending service,…
deadbolt_check_supabase_accessread-onlyUse when you write, review or are about to apply Supabase / PostgreSQL migration SQL (CREATE TABLE, RLS, CREATE POLICY, GRANT, views, SECURITY DEFINER function…
deadbolt_catalog_queryread-onlyUse when you need to check a live Supabase project rather than migration files: returns a read-only SQL query that reads table RLS settings, grants for anon an…
tick_next_runsread-onlyUse when you or the user just wrote a cron expression (GitHub Actions, Vercel cron, Cloudflare Cron Triggers, systemd, an agent schedule) and need its next fir…
tick_matchesread-onlyUse when you need a yes/no on whether a cron expression would fire at a specific instant in a timezone — for example before shipping a schedule that crosses a …
mend_repair_jsonread-onlyUse when JSON from an LLM, API, log, config or copy-paste fails to parse (JSON.parse error, "Unexpected token", "Expecting property name"), or the user pastes …
mend_outline_jsonread-onlyUse when you are about to read a big JSON response, log or export into context, before loading it: returns a compact outline of the structure (keys, types, arr…
mend_query_jsonread-onlyUse when you need specific fields from a JSON document without reading all of it: $.users[0].name, $.items[*].id, $.a.b[-1], $.list[1:3], $..email (recursive).
swatch_check_contrastread-onlyUse when the user asks whether a color combination is readable or accessible, passes WCAG AA or AAA, or has enough contrast (text on a background, button, badg…
swatch_fix_contrastread-onlyUse when a color pair fails contrast and the user wants the smallest change that makes it pass, such as "make this gray text accessible without changing the lo…
swatch_make_scaleread-onlyUse when the user asks for a palette, shades, tints, a design-token scale or a Tailwind-style 50 to 950 ramp from a brand color.
swatch_check_pairsread-onlyUse when the user has a whole design system, theme or stylesheet and wants every text and background pair checked for accessibility in one go.
meridian_nowread-onlyUse when the user asks what time or date it is right now somewhere.
meridian_convert_timeread-onlyUse when you need to convert a specific wall-clock time from one place to others, for any date.
meridian_meeting_slotsread-onlyUse when you need to schedule a call across several places.
meridian_zone_inforead-onlyUse when you need to answer "what is the UTC offset of X", "does X observe daylight saving" and "when do the clocks change".
doorman_check_ai_bot_accessread-onlyUse when the user asks whether their site (or any public site), or a robots.txt they pasted, blocks ChatGPT, Claude, Google AI, Perplexity or other AI crawlers…
notary_check_packagesread-onlyUse when the user or an agent is about to install or import npm or PyPI packages: before npm install or pip install, when adding lines to package.json or requi…
Test results
Safe mode: only tools labeled read-only were run. How the test works
- !Ready for the newest MCP versionnote
1 warning
- !Uses an older MCP version (2025-11-25). It works today, but it isn't on the July 2026 version (2026-07-28) yet.
- !Follows MCP best practices (not scored yet)note
1 tip (not scored)
- !deadbolt_check_supabase_access: Labeled read-only, but it takes a raw "sql" input. A read-only label can't promise much when the tool runs whatever it's sent; make the tool itself refuse changes (for example with a read-only database user), or drop the label. QAmcp doesn'
- ✓ConnectsConnected in 333 mspass
- ✓Lists its toolsFound 19 toolspass
- ✓Every tool is describedAll 19 tools and their inputs are describedpass
- ✓Tools are labeled safe or dangerousEvery tool has a safety labelpass
- ✓No known hidden instructionsNone of the hidden-instruction wordings we know were found in tool descriptions. New wordings can get past this check.pass
- ✓Tools work with good inputspass
All good
- ✓stamp_check_email_domain: Answered with an error, probably because of our sample input: "test" is not a domain name. Try something like yourcompany.com.
- ✓stamp_check_dns_record: Answered with an error, probably because of our sample input: That does not look like an SPF (v=spf1 …), DMARC (v=DMARC1; …) or DKIM (v=DKIM1; k=…; p=…) record.
- ✓deadbolt_catalog_query: Worked (84 ms)
- ✓tick_next_runs: Answered with an error, probably because of our sample input: Could not parse cron expression "test": invalid configuration format ('test'), exactly five, six, or seven space separated parts are requir…
- ✓tick_matches: Answered with an error, probably because of our sample input: Could not parse "at" as an ISO datetime: "test".
- ✓mend_repair_json: Answered with an error, probably because of our sample input: No JSON found. Expected an object { } or array [ ].
- ✓mend_outline_json: Answered with an error, probably because of our sample input: No JSON found. Expected an object { } or array [ ].
- ✓mend_query_json: Answered with an error, probably because of our sample input: No JSON found. Expected an object { } or array [ ].
- and 11 more
- ✓Bad inputs give a clean errorpass
All good
- ✓stamp_check_email_domain: Refused missing required input "domain" with a clear error
- ✓stamp_check_email_domain: Refused wrong type for "domain" with a clear error
- ✓stamp_check_dns_record: Refused missing required input "record" with a clear error
- ✓stamp_check_dns_record: Refused wrong type for "record" with a clear error
- ✓tick_next_runs: Refused missing required input "expression" with a clear error
- ✓tick_next_runs: Refused wrong type for "expression" with a clear error
- ✓tick_matches: Refused missing required input "expression" with a clear error
- ✓tick_matches: Refused wrong type for "expression" with a clear error
- and 25 more
- ✓Tools work togethernotary_check_packages → doorman_check_ai_bot_access: doorman_check_ai_bot_access found what notary_check_packages returned (url = "https://notary.clawhard.com/?p=npm%3Atest")pass
- ✓Fast enoughpass
All good
- ✓Connecting took 333 ms
- ✓Listing tools took 64 ms
- ✓Average tool answer: 49 ms
- ✓notary_check_packages: Slowest tool: notary_check_packages (233 ms)
- ✓No secrets leakedChecked 49 error messages: no secrets or internal detailspass
- ✓Resources and prompts workpass
All good (16 resources, 8 prompts)
- ✓Opened 10 of 10 resources (a sample of 10 of 16)
- ✓An address that does not exist gets a clean "not found" error
- ✓Opened 8 of 8 prompts
Test it yourself
Free and open source. Same checks, same score.
npx qamcp-cli https://dev.clawhard.com/mcpShow this score on GitHub
Free for every server in the directory. Paste this into your README: the badge shows the score from our latest test.
[](https://qamcp.dev/s/com-clawhard-dev.html)Score over time
- 9 Nov 202696
One test so far. New tests will show here.
Reviews
Coming soon: reviews from people who use Clawhard Dev Tools, signed in with GitHub, one per person. Reviews never change the score.
QAmcp Monitor tests it every hour and emails you when it goes down, the score drops, a tool changes or a secret leaks. Free for 1 server, no card.
Have a concern, or want it removed? Ask us and we'll take it off the list. How the directory works