LIHTC Atlas: income limits, QCT/DDA and LIHTC properties

loans.lihtc/lihtc-loanslihtc.loansstreamable-httpv1.2026.1101.0Scanned 3 hours ago

LIHTC data: HUD income and rent limits, 2027 QCT/DDA checks, LIHTC properties, credit math.

10 tools: 3 change things and 7 only read.

Reads private data · 1
Reads text others write · 2
Can send data out · 1
No findings

Anlyon alternative

3 of these tools change something. Run those as governed actions.

Declare what an action changes, and Anlyon puts it under a shared limit, binds every approval to the exact request, and grades the outcome. It works on any HTTPS API you can describe as an action.

Anlyon does not run, proxy or govern this MCP server. A tool your own code calls directly is not routed through Anlyon and is not governed by it.

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Tools

Grouped by what each tool does, most consequential first. Open one for its reasons and full description; descriptions are the publisher's own words.

10 tools

Changes things 3Creates or changes something that can be changed back.Claude Code: ask

calculate_creditsAnnual and 10-year housing credits and equity from eligible basis, applicable fraction, credit type (4 or 9), the optional 130% basis boost and a credit price (default: the latest …No findings
Why it is in this group
- Nothing in its name or description says what it does, so it is counted as a write.
- The server marks it read-only (readOnlyHint: true), but an annotation never lowers a class.
Description, as the server wrote it
Annual and 10-year housing credits and equity from eligible basis, applicable fraction, credit type (4 or 9), the optional 130% basis boost and a credit price (default: the latest public median). Uses the statutory floor unless applicable_percentage is given. Same math as the lihtc.loans credit estimator.
Annotations the server declares
- readOnlyHint: true
- destructiveHint: false
- idempotentHint: true
- openWorldHint: false
calculate_max_rentMaximum LIHTC gross rent and tenant-paid rent for one unit: county, bedroom count and AMI level, less an optional utility allowance, from HUD FY2026 MTSP limits by the IRS Publicat…No findings
Why it is in this group
- Nothing in its name or description says what it does, so it is counted as a write.
- The server marks it read-only (readOnlyHint: true), but an annotation never lowers a class.
Description, as the server wrote it
Maximum LIHTC gross rent and tenant-paid rent for one unit: county, bedroom count and AMI level, less an optional utility allowance, from HUD FY2026 MTSP limits by the IRS Publication 5913 method, with the formula.
Annotations the server declares
- readOnlyHint: true
- destructiveHint: false
- idempotentHint: true
- openWorldHint: false
check_qct_ddaIs a site in a Qualified Census Tract or Difficult Development Area on HUD's 2027 lists (and any newer year HUD has posted)?Reads text others writeNo findings
Why it is in this group
- Nothing in its name or description says what it does, so it is counted as a write.
- The server marks it read-only (readOnlyHint: true), but an annotation never lowers a class.
What it can reach
- untrusted-inputThe server marks it openWorldHint: true: it reaches things outside the server's own data.
Description, as the server wrote it
Is a site in a Qualified Census Tract or Difficult Development Area on HUD's 2027 lists (and any newer year HUD has posted)? Give a US street address (geocoded by the Census Bureau), or lat + lon, or an 11-digit 2020 census tract. Returns the tract, county, ZCTA and metro area and one result per list year.
Annotations the server declares
- readOnlyHint: true
- destructiveHint: false
- idempotentHint: true
- openWorldHint: true

Only reads 7Looks things up and changes nothing.Show 7 read-only tools

get_applicable_percentagesThe monthly 70% (9%) and 30% (4%) present value credit rates from the IRS revenue ruling, the statutory 9% and 4% floors and the rate a deal uses.No findings
Why it is in this group
- The name "get_applicable_percentages" says "get": a word for reading.
Description, as the server wrote it
The monthly 70% (9%) and 30% (4%) present value credit rates from the IRS revenue ruling, the statutory 9% and 4% floors and the rate a deal uses. Defaults to the latest month, with the last 12.
Annotations the server declares
- readOnlyHint: true
- destructiveHint: false
- idempotentHint: true
- openWorldHint: false
get_equity_pricingMedian net equity price per $1 of federal housing credit from CohnReznick's Housing Tax Credit Monitor, the series since late 2024, and current national fund pricing ranges.No findings
Why it is in this group
- The name "get_equity_pricing" says "get": a word for reading.
Description, as the server wrote it
Median net equity price per $1 of federal housing credit from CohnReznick's Housing Tax Credit Monitor, the series since late 2024, and current national fund pricing ranges.
Annotations the server declares
- readOnlyHint: true
- destructiveHint: false
- idempotentHint: true
- openWorldHint: false
get_financing_quote_linkThe page where a developer or owner can request a financing quote for a 4% or 9% deal (construction, tax-exempt bond, bridge, permanent, Year 15) from Janover Capital LLC, and what…No findings
Why it is in this group
- The name "get_financing_quote_link" says "get": a word for reading.
Description, as the server wrote it
The page where a developer or owner can request a financing quote for a 4% or 9% deal (construction, tax-exempt bond, bridge, permanent, Year 15) from Janover Capital LLC, and what the desk handles. Returns a link only; it submits nothing.
Annotations the server declares
- readOnlyHint: true
- destructiveHint: false
- idempotentHint: true
- openWorldHint: false
get_income_limitsHUD FY2026 MTSP income limits for a county (town in New England): every level from 20% to 80% of area median for 1 to 8 persons, HERA Special limits where HUD lists them, the area …No findings
Why it is in this group
- The name "get_income_limits" says "get": a word for reading.
Description, as the server wrote it
HUD FY2026 MTSP income limits for a county (town in New England): every level from 20% to 80% of area median for 1 to 8 persons, HERA Special limits where HUD lists them, the area median family income, and the maximum gross rent by bedroom count at each level (IRS Pub. 5913 method). Give state + county, or fips.
Annotations the server declares
- readOnlyHint: true
- destructiveHint: false
- idempotentHint: true
- openWorldHint: false
get_propertyEverything HUD's LIHTC database lists for one property (units, income-restricted units, bedrooms, placed-in-service and allocation years, credit type, bonds, income test, targeting…Reads private dataReads text others writeCan send data outNo findings
Why it is in this group
- The name "get_property" says "get": a word for reading.
What it can reach
- private-dataThe description's first sentence says "database": it reads databases.
- untrusted-inputThe input takes a URL (input.url), and the tool reads it: it reads web pages, which anyone can write.
- outboundThe input takes a URL (input.url): a request to a URL can carry data to whoever runs it.
Claude Code: ask, because it is tagged outbound.
Description, as the server wrote it
Everything HUD's LIHTC database lists for one property (units, income-restricted units, bedrooms, placed-in-service and allocation years, credit type, bonds, income test, targeting), its compliance and extended-use years, 2027 QCT/DDA status, its county's 2026 50% and 60% limits and rents, and nearby properties. Give the page url or the HUD project id.
Annotations the server declares
- readOnlyHint: true
- destructiveHint: false
- idempotentHint: true
- openWorldHint: false
get_state_lihtcOne state's allocating agency and LIHTC page, current Qualified Allocation Plan, state credit, 2026 9% credit ceiling and private activity bond cap (with the per-capita or minimum …No findings
Why it is in this group
- The name "get_state_lihtc" says "get": a word for reading.
Description, as the server wrote it
One state's allocating agency and LIHTC page, current Qualified Allocation Plan, state credit, 2026 9% credit ceiling and private activity bond cap (with the per-capita or minimum basis and population), and its count of 2027 QCTs and nonmetro DDA counties.
Annotations the server declares
- readOnlyHint: true
- destructiveHint: false
- idempotentHint: true
- openWorldHint: false
search_propertiesHUD-listed LIHTC properties still monitored for compliance, in one state, optionally one city and a name or street fragment, largest first.No findings
Why it is in this group
- The name "search_properties" says "search": a word for reading.
Description, as the server wrote it
HUD-listed LIHTC properties still monitored for compliance, in one state, optionally one city and a name or street fragment, largest first. Each result has its lihtc.loans page URL and HUD project id for get_property. Covers cities with 5 or more monitored properties.
Annotations the server declares
- readOnlyHint: true
- destructiveHint: false
- idempotentHint: true
- openWorldHint: false

This is not a safety rating, and no finding is not a safety guarantee. The groups and findings come from fixed checks of the tool definitions the server returned on the date shown, not from its code or what it does when called. How the checks work.

Exfil surface

Which tools read private data, which read text someone else can write, and which can send data out. One of each is a path a prompt injection can use.

2 paths in this server alone from private data, through text someone else wrote, to a way out. Denying 1 outbound tool breaks every one.

Reads private data1: Reads files, mail, messages, databases, secrets, calendars or repositories.; get_property
Reads text others write2: Brings in text someone else can write: web pages, inbound email, messages, issues and comments.; check_qct_dda
get_property
Can send data out1: Can carry data to people or systems: it sends, posts or publishes, or takes a recipient, channel or URL.; get_property

deny to break every path

{
  "permissions": {
    "deny": [
      "mcp__lihtc-loans__get_property"
    ]
  }
}

Other servers in the same agent add their own tools to these paths. Audit your whole setup to see them together.

Findings

Matches of fixed checks, with the text they matched.

No check matched anything in these tool definitions. That is not a safety guarantee.

History

Changes to its tool definitions and to its remote endpoint, newest first.

No change seen yet. Its tools are rescanned every day, and a remote endpoint is looked at once a week.

All changes to this server

Install

Pinned to version 1.2026.1101.0. Values in angle brackets are yours to fill in.

claude mcp add --transport http lihtc-loans https://lihtc.loans/mcp

claude mcp add --transport http lihtc-loans https://lihtc.loans/mcp

Run in a terminal.

Claude Code permissions

Allow the reads, ask before a change or a way out, deny the deletes. Paste into .claude/settings.json.

.claude/settings.json

{
  "permissions": {
    "allow": [
      "mcp__lihtc-loans__get_income_limits",
      "mcp__lihtc-loans__search_properties",
      "mcp__lihtc-loans__get_state_lihtc",
      "mcp__lihtc-loans__get_applicable_percentages",
      "mcp__lihtc-loans__get_equity_pricing",
      "mcp__lihtc-loans__get_financing_quote_link"
    ],
    "ask": [
      "mcp__lihtc-loans__calculate_max_rent",
      "mcp__lihtc-loans__check_qct_dda",
      "mcp__lihtc-loans__get_property",
      "mcp__lihtc-loans__calculate_credits"
    ],
    "deny": []
  }
}

Tools that only read are allowed, tools that change things ask first, tools that delete or cancel are denied. A read that can send data out (it takes a URL, say) asks first too. It assumes the server is installed as lihtc-loans. Review it before you use it.

Capability tags behind 2 rules

mcp__lihtc-loans__check_qct_dda untrusted-input
mcp__lihtc-loans__get_property private-data, untrusted-input, outbound

Keep the decision: fail CI when the tools change, follow every change, or show a badge.

Pin in CI

Fail a build when the tools you reviewed are not the tools the server serves today.

curl -s "https://anlyon.dev/api/v1/servers/loans.lihtc/lihtc-loans/verify?hash=a9e6becbdbd6c6b49234a2ce716a3f1f525ec55a0031bbb66a68c3e9706413e0" | jq -e '.changed == false'

Pinned hash a9e6becbdbd6, from Nov 2, 2026, 02:18 UTC.

Watch

Get told when its tools change: a new tool, a new description, a new class.

https://anlyon.dev/servers/loans.lihtc/lihtc-loans/changes.xml

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Source: MCP Registry. Synced Nov 2, 2026, 02:18 UTC.