US Federal Rules Taking Effect
Track which US federal rules take effect between two dates and what CFR parts they change.
Queries published US federal final rules by effective date range or CFR part. Returns rule titles, agencies, affected CFR sections, document numbers, and Federal Register records. Helps businesses and compliance teams monitor regulatory changes.
Try asking Muse: "Show me all EPA rules taking effect in the next quarter that affect air quality standards."
Source: Found in the official MCP Registry (io.github.joelp22-maker/referencesource-rules) · First listed September 25, 2026
Last 24 hours
Each bar is one check, every 15 minutes. Green means it answered. Last checked 2 h ago.
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How to add it to Muse
Not in Muse's Connectors list yet, but Muse can still use it. Copy the request below and paste it into Muse. Muse asks before it shares anything with the app's site. Meta does not review apps used this way, so only use ones you trust. We tested this in the Muse app on September 24, 2026: Muse used an app's link directly this way and returned a live answer.
https://referencesource.org/mcp/rulesNot in Muse's Connectors list yet. Muse can still use it: its page gives you a request to paste into Muse.
Technical details: safety screening, tools, response time and recent checks
Response time at the last check: 377ms. Worked in 100% of checks over 30 days.
Screening · September 25, 2026
Screened, no issues found
Screening looks for known threats and hidden instructions at the time of the check, and runs again weekly and whenever the tool list changes. It cannot see the server's code, so only connect what you need and review what Muse asks to do. How screening works.
Tools · 5
list_rules_taking_effectWhat lands on me, and when? Lists already-published US federal final rules whose effective date falls between two dates, soonest first, optionally from one agency. Each with the rule title, the agency, the CFR parts amended, the document number, the rule's own DATES paragraph andget_ruleEverything this register holds for one final rule: title, agency, effective date, the rule's own DATES paragraph, the CFR parts it amends, its publication date, a link to the rule on federalregister.gov, and a verbatim quote of the Federal Register API record it was read from. Dolist_agenciesWhich agencies have rules coming? Returns each agency in this register with how many rules it has taking effect, the soonest and latest of those dates. Call it to get an agency name exactly as the Federal Register writes it before filtering with list_rules_taking_effect — "Federalist_rules_amending_cfr_partIs anything changing in the part of the CFR I am subject to? Give a CFR title and part — "49 CFR 192", "40 CFR 52", "21 CFR 1308" — and get the already-published final rules that amend it, soonest effective date first, with each rule's DATES paragraph and a verbatim quote. The paverify_quoteIs this right? Check a claim about a final rule — its effective date, its agency, the CFR parts it amends — against the Federal Register record instead of trusting it. Says whether the claim matches a stored value, appears only in the verbatim quote, or differs (and then what theRecent checks
Link
https://referencesource.org/mcp/rulesQuestions about US Federal Rules Taking Effect in Muse
How do I connect US Federal Rules Taking Effect to Muse?
Not in Muse's Connectors list yet, but Muse can still use it. Paste this into Muse: "Use US Federal Rules Taking Effect to help me. It is a free service with an MCP server at https://referencesource.org/mcp/rules. It does not need an API key. Ask me before you share anything with it." Muse asks before it shares anything with the app's site. Meta does not review apps used this way, so only use ones you trust. We tested this in the Muse app on September 24, 2026: Muse used an app's link directly this way and returned a live answer.
Is US Federal Rules Taking Effect working right now?
At the last check (September 28, 2026, 07:15 UTC) the endpoint was working, answering in 377ms. Over the last 7 days it answered 100% of health checks. It is checked every 15 minutes.
Is US Federal Rules Taking Effect safe to connect to Muse?
It was screened on September 25, 2026 with the result "screened, no issues found". Screening checks the domain against threat feeds and reads the tools for hidden instructions and requests for passwords or card numbers. It cannot see the server's code, so grant only the access you need.
What can US Federal Rules Taking Effect do in Muse?
It exposes 5 tools, including list_rules_taking_effect, get_rule, list_agencies, list_rules_amending_cfr_part. For example, you could ask Muse: "Show me all EPA rules taking effect in the next quarter that affect air quality standards."
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