Built for Claude / Shipped October 11, 2026
Each one gives Claude a real job: checking a website, simulating a year of cash, finding a federal grant, timing a phone call, reading the Bible. Copy a server URL, add it to Claude, and ask in plain words.
Free to add. No account needed for thirteen of them.
Nine of our tools are listed in Anthropic’s Claude directory.
Four of these engines measured 2,000 small business websites for the Small Business AI Readiness Index: an average score of 58.5 out of 100, and only 11.3% enforce DMARC.
Add to Claude / About a minute
Press Copy URL on any connector below. Each one is a remote MCP server Claude can reach.
In Claude on the web or the desktop app, go to Customize, then Connectors. Press + Add, then Add custom connector.
Type the connector’s name, paste the URL, and press Continue.
Choose No sign in and press Add. Chief Dreamer is the exception: let it sign you in, so your data stays in your own account.
On a Team or Enterprise plan
An Owner adds the connector once, under Organization settings, then Connectors: press Add, hover Custom, and choose Web. Everyone else connects it from Customize, then Connectors.
In Claude Code
One command adds it to the terminal:
claude mcp add --transport http site-check https://mcp.modernmustardseed.com/site-checkOn the Free plan
Claude allows one custom connector on the Free plan, so start with the one you need most. Paid plans can add them all.
Anthropic’s guide to custom connectors (opens in a new tab)The portfolio / 69 tools in all
Every connector below is live on its own server, with its docs, its privacy policy and the exact tools Claude will see.
Listed in Anthropic’s Claude directory
A measured health check for any public website
Speed, security, domain, email, search basics, AI search readiness and contact paths, with a fix for every problem, plus a local presence score.
scan_websitecheck_ai_search_readinessscore_local_presenceexplain_checkhttps://mcp.modernmustardseed.comRead the docs for Site Check (opens in a new tab) Privacy policy for Site Check (opens in a new tab)
Listed in Anthropic’s Claude directory
Live the year before you spend it
Simulates a year of cash for a small services business ten thousand times: the odds of running short, the week it most likely happens, what causes it, and which single change takes the most risk off.
simulate_cash_yearrank_leverslist_presetshttps://mcp.modernmustardseed.comRead the docs for Dry Run (opens in a new tab) Privacy policy for Dry Run (opens in a new tab)
Listed in Anthropic’s Claude directory
Test the riskiest thing first
Scores an idea on ten assumptions, picks the cheapest test with pass and kill lines written in advance, cuts the MVP, dates the build, and makes the push, park or kill call against the numbers.
classify_ideavalidation_plancut_mvpsequence_buildkill_or_continuebuild_scope_and_sequenceexplain_methodhttps://mcp.modernmustardseed.comRead the docs for Idea to Product Sequencer (opens in a new tab) Privacy policy for Idea to Product Sequencer (opens in a new tab)
Listed in Anthropic’s Claude directory
Who holds the keys to a business online
Maps who controls the domain, DNS, website platform, email, tracking tags, booking tools and profiles, how hard each would be to leave, and the first step to take control.
audit_ownershipcheck_domain_controllist_fingerprintshttps://mcp.modernmustardseed.comRead the docs for Own It (opens in a new tab) Privacy policy for Own It (opens in a new tab)
In review for Anthropic’s Claude directory
Price the work, not the clock
Turns a service business’s costs, capacity and deliverables into three fixed packages with the margin math shown, stress tests them against scope creep and a slow month, and writes the scope lines.
build_packagesstress_test_packagecompare_modelspackage_scope_languagehttps://mcp.modernmustardseed.comRead the docs for Package Pricing Lab (opens in a new tab) Privacy policy for Package Pricing Lab (opens in a new tab)
Listed in Anthropic’s Claude directory
Will the email land, and is the domain safe?
SPF, DKIM, DMARC, BIMI, MTA-STS and TLS-RPT, the certificate and TLS versions, security headers, and the registry record with its locks and DNSSEC, each with a fix and the rule behind it.
check_email_authcheck_sslcheck_security_headerscheck_domain_registrationfull_domain_reporthttps://mcp.modernmustardseed.comRead the docs for Domain Health (opens in a new tab) Privacy policy for Domain Health (opens in a new tab)
Listed in Anthropic’s Claude directory
What answer engines read, audited and written
AI crawler rules, structured data, llms.txt and name, address and phone consistency, with LocalBusiness JSON-LD and llms.txt written for you. Every rule cites its public source.
audit_ai_readinessgenerate_local_business_schemagenerate_llms_txtcheck_entity_consistencyvalidate_structured_datahttps://mcp.modernmustardseed.comRead the docs for AI Search Kit (opens in a new tab) Privacy policy for AI Search Kit (opens in a new tab)
In review for Anthropic’s Claude directory
Ground truth for contractors and home services
Maps the ZIPs, towns and homes inside a service area, shows busy and slow months by trade and state, times review requests within the rules, and lists the pages a trade website needs.
service_areaseasonal_demandreview_request_timingtrade_service_pageslist_tradeshttps://mcp.modernmustardseed.comRead the docs for Local Trades Kit (opens in a new tab) Privacy policy for Local Trades Kit (opens in a new tab)
Listed in Anthropic’s Claude directory
Check the number before you dial
Validates a US or Canadian number, finds its time zone, says whether a call is allowed right now under federal and state calling hours, and gives recording consent, AI voice disclosure and toll-fraud risk, every rule cited.
check_phone_numbercan_i_call_nowrecording_consent_rulesai_voice_disclosure_ruleslist_state_calling_ruleshttps://mcp.modernmustardseed.comRead the docs for Call Desk (opens in a new tab) Privacy policy for Call Desk (opens in a new tab)
Listed in Anthropic’s Claude directory
Catch it before the caller does
Checks a voice agent’s prompt and its Vapi, Retell, ElevenLabs or OpenAI Realtime config against rules learned on live calls, with the severity, exact line and fix for every finding.
lint_voice_agentlist_lint_rulesexplain_lint_rulehttps://mcp.modernmustardseed.comRead the docs for Voice Agent Linter (opens in a new tab) Privacy policy for Voice Agent Linter (opens in a new tab)
In review for Anthropic’s Claude directory
Federal grants, in plain words
Searches live federal grant listings on Grants.gov by keyword, applicant type, category, agency and deadline, opens any listing in full, and decodes who is eligible. Every result links to its official listing.
search_grantsget_grantgrants_closing_sooneligibility_explainerhttps://mcp.modernmustardseed.comRead the docs for Small Business Funding Finder (opens in a new tab) Privacy policy for Small Business Funding Finder (opens in a new tab)
Live now, add it by URL
A lasting memory for your dreams
Gives Claude a private place to keep your ideas: what you dream, how well it fits your life right now, the smallest real test, and what is due next, remembered across every chat. You sign in with your email, and you can export or delete everything.
Asks you to sign in with your email the first time.
capture_dreamlist_dreamsget_dreamscore_dreamset_first_proofsequence_dreamlog_checkinwhats_dueupdate_profileexport_my_datadelete_dreamdelete_my_accounthttps://dreamer.modernmustardseed.comRead the docs for Chief Dreamer (opens in a new tab) Privacy policy for Chief Dreamer (opens in a new tab)
In review for Anthropic’s Claude directory
The Bible, inside Claude
Read and search the World English Bible and the King James Version, follow a reading plan day by day, and open the daily devotional. Every verse comes from public-domain text.
get_passagesearch_scripturelist_reading_plansget_reading_plan_dayget_devotionalhttps://crossandcovenant.coRead the docs for Cross + Covenant Bible (opens in a new tab) Privacy policy for Cross + Covenant Bible (opens in a new tab)
Listed in Anthropic’s Claude directory
The church calendar, inside Claude
Liturgical seasons and colors, feast days, Easter and Orthodox Pascha, and the three-year Sunday readings with public-domain Bible text, for pastors, worship planners and anyone who keeps the Christian year.
season_for_datereadings_for_sundayupcoming_feast_daysplan_sermon_serieshttps://crossandcovenant.coRead the docs for Church Year (opens in a new tab) Privacy policy for Church Year (opens in a new tab)
Straight answers
No. Every connector on this page is free to add to Claude and free to use.
Nine of our tools are listed in Anthropic’s Claude directory, published on October 12, 2026: Site Check, Dry Run, Idea to Product Sequencer, Own It, Domain Health, AI Search Kit, Call Desk, Voice Agent Linter and Church Year. Package Pricing Lab, Local Trades Kit, Small Business Funding Finder and Cross + Covenant Bible are still in review with Anthropic. Each card here shows its status. Every connector works today by its server URL, whatever its listing status. Chief Dreamer is live and has not been submitted yet. A listing means you can find the connector in the directory, nothing more. Claude is a product of Anthropic. Modern Mustard Seed is an independent studio and is not affiliated with or endorsed by Anthropic.
Not for thirteen of them: add the URL and choose No sign in. Chief Dreamer keeps your own data, so it asks you to sign in with your email the first time Claude uses it, and you can export or delete everything whenever you like.
Each connector links its privacy policy on its card. The policy says exactly what the connector reads, what it keeps and for how long.
We did. Modern Mustard Seed is an AI product studio in Kalispell, Montana: Sarah Scarano builds, and Anthony Scarano runs sales and marketing. The two scripture connectors carry the name of Cross + Covenant, the Christian apparel brand we also run.
For your business
We build connectors, skills and agents around how your business actually works, then manage them for you, end to end. Changes are included, and you own every piece.
The connector home (opens in a new tab) Connector builds for software companies How we build: the calls behind them
Claude is a product of Anthropic. Modern Mustard Seed is an independent studio and is not affiliated with or endorsed by Anthropic.
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The cited rules behind Call Desk and the Voice Agent Linter.
Agents and skills for local search, wired to five of our connectors.
Puts a home-service business inside the assistants people already ask.
2,000 small business websites measured with four of our connectors, aggregates only, free to download and cite.
Licensing, legal citations, privacy and the rules we keep when nobody is checking.
Claude agents installed inside your business and run for you every month.