Untax
Search U.S. property tax assessments, exemptions, appeal lifecycles, and VA benefits.
Connects to U.S. county property assessment records, tax exemption rules, appeal filing lifecycles, and VA facility and form directories across 20 MCP tools (10 anonymous read-only tools plus authenticated owner workspace and VA connection tools).
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Source: Submitted by its builder and screened before listing · First listed October 28, 2026
Last 24 hours
Each bar is one check, every 15 minutes. Green means it answered. Last checked 3 h ago.
Is it safe to connect?
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Before it acts: Read what Muse plans to do before you approve it, and remove the app from Muse when you stop using it.
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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://untax.io/mcpNot in Muse's Connectors list yet. Muse can still use it: its page gives you a request to paste into Muse.
Also use it in ChatGPT or Claude
Untax is a remote MCP server, so any assistant that can add a custom connector by link can use it. Same link, same tools.
Add it to ChatGPT
- 1
Open ChatGPT settings
In ChatGPT, open Settings, then Connectors (called Apps & Connectors on some accounts).
- 2
Turn on developer mode
Under Advanced settings, switch on Developer mode. That is what lets you add a connector by link.
- 3
Create the connector
Choose Create, give it a name, paste the link as the MCP server URL, and save. If it needs a sign-in, ChatGPT asks for it here.
- 4
Use it in a chat
Start a chat, open the tools menu, pick the connector, and ask. ChatGPT asks before it runs a tool the first time.
Custom connectors need a paid ChatGPT plan, and on Team, Enterprise and Edu accounts only an admin can add them. Our "Working" label means the server answered us; it cannot tell whether your plan lets you add it. All connectors that work in ChatGPT
Add it to Claude
- 1
Open Claude settings
In Claude, open Settings, then Connectors.
- 2
Add a custom connector
Choose Add custom connector, give it a name, and paste the link.
- 3
Connect and use it
If it needs a sign-in, Claude sends you to it. Then turn the connector on in a chat from the tools menu and ask.
Custom connectors are available on paid Claude plans; on Team and Enterprise accounts an admin may need to add them. Our "Working" label means the server answered us; it cannot tell whether your plan lets you add it. All connectors that work in Claude
https://untax.io/mcpWhat people ask Muse to do
Technical details: safety screening, tools, response time and recent checks
Response time at the last check: 117ms. Worked in 100% of checks over 30 days.
Screening · October 28, 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 · 20
suggest_addressesFind possible address matches in county records from a partial query or misspelling. If the property is ambiguous, ask the user to choose before drawing conclusions or taking action. Similarity scores and is_auto_match are hints. They do not verify a selection, owner authority orget_property_assessmentRead county assessment records and their sources for a supported address or parcel ID. Keep missing facts unknown; commercial building area is not finished living area. Report comparisons as drafts with their evidence limits. They do not verify personal tax savings or authorize frecheck_property_opportunitiesReview possible property-tax options using the available county records and the owner's answers. Returns research and next questions. Answers do not verify eligibility, evidence, savings, owner authority or permission to pay or file. Do not send exact income, ages, identifiers, dget_owner_workspaceRead saved property reviews for the signed-in Untax account. Requires valid, revocable owner:read permission. Returns property and review IDs; do not assume an active property. Ask the user to choose when ambiguous. This does not verify ownership, benefit eligibility, savings or get_owner_review_detailsRead the selected saved property review. Requires both IDs from get_owner_workspace and valid owner:read permission. Check source_context_current and reconfirmation_required; confirm stale previous_owner_answers with the user before reusing them. Ask relevant unanswered questionsfind_va_facilitiesFind official VA facilities in a specified state, with optional city and facility-type filters. If location is missing, ask the returned question. Do not guess a state or present a VA facility as a county tax office or accredited VSO. Results are public information; sandbox resulget_va_facilityRead one official VA facility using its returned id. Returns available address, phone and website details, with source and environment. Does not return private veteran records or decide eligibility.find_va_formsFind official VA forms by number or search text. If query is missing, ask which form or purpose is needed. Show returned revision details and official PDF links. This does not complete or submit a claim.get_va_formLook up a VA form number, such as 21-0966. Use form_name from search results, not the numeric catalog id. If form_name is missing, ask for the form number. Returns available title, revision details and official PDF link. The link does not complete or submit an application or estastart_va_connectionStart a requested VA connection for this signed-in account and assistant. Requires owner:va. Show connection_url to confirm the account and fields to share. Review saved verification or complete official VA sign-in, then approve sharing with this app. Verification is saved to theget_va_connectionRead the limited, dated VA facts shared with this account and assistant. Requires owner:va and active sharing permission; browser sign-in alone grants no access. Saved facts remain after the VA session expires or the server restarts. Show verified_at and freshness. This is a savedisconnect_va_connectionWhen requested, stop this assistant's access to this account's shared VA facts. Requires owner:va. Saved verification stays in Account until the owner removes it. Does not disconnect another account or assistant, submit a claim or change VA records.review_veteran_requirementsReview requirements for the selected property using accumulated answers and, only when requested, the connected applicant's saved VA facts. Requires owner:va. Show va_source.verified_at and freshness; saved facts are not a live check. Ask returned questions one at a time. Accept generate_veteran_packetCreate a free private veteran review PDF for the selected saved review. Requires owner:read. Missing answers appear as questions to review. A VA connection is optional; using connected facts requires owner:va and the user's explicit choice for this applicant. Extra answers are usget_microtransactions_catalogBrowse property-tax research options and the tools available in this connection. Each option shows its status and the evidence still needed. This does not verify eligibility, set a payable price, establish savings, approve an automatic refund or authorize filing.audit_microtransactionResearch the selected property and show the evidence needed for the requested records service. Returns source facts and available actions. It does not verify savings, quote a payable fee, inspect payment methods, charge, create a filing packet or submit a correction. Test checkouget_appeal_lifecycleRead a general checklist for reviewing an assessment. It does not look up a property or verify deadlines, fees, eligibility or outcomes. Check the official rules for the property's location and tax year.start_tax_sandboxStart a test checkout for the selected property only when the user requests it. Requires owner:sandbox sign-in. Uses test payments and separate test orders. It does not verify ownership, eligibility, savings or an open appeal window. No real charge or county filing occurs. Show tget_tax_sandbox_orderRead your own Untax test order. Requires owner:sandbox sign-in. Reports test payment and draft delivery separately. Neither status verifies production eligibility or a county filing. Show the returned test checkout link when payment is pending. When an order_id is known, read thecomplete_tax_sandbox_orderCheck the test payment for your own order, then make its draft PDF and receipt available if verified. Requires owner:sandbox sign-in and completed test checkout. Any submission is simulated. It does not file a real appeal or change county records. Show the returned test checkout Recent checks
Link
https://untax.io/mcpQuestions about Untax in Muse
How do I connect Untax to Muse?
Not in Muse's Connectors list yet, but Muse can still use it. Paste this into Muse: "Use Untax to help me. It is a free service with an MCP server at https://untax.io/mcp. 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 Untax working right now?
At the last check (October 29, 2026, 08:45 UTC) the endpoint was working, answering in 117ms. Over the last 7 days it answered 100% of health checks. It is checked every 15 minutes.
Is Untax safe to connect to Muse?
It was screened on October 28, 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.
Is Untax free?
It is freemium. Check https://untax.io for current pricing.
What can Untax do in Muse?
It exposes 20 tools, including suggest_addresses, get_property_assessment, recheck_property_opportunities, get_owner_workspace.
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