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Locus

Official US-address public records: zoning, flood, parcel, permits, taxes. Free look, x402 paid.

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Install Locus

Pick your client, then add it in one click or paste the config.

STDIONode.js
~/Library/Application Support/Claude/claude_desktop_config.json
claude_desktop_config.json
{
  "mcpServers": {
    "locus-5": {
      "command": "npx",
      "args": [
        "-y",
        "@velinussage/locus-agent-skill"
      ]
    }
  }
}

Settings → Developer → Edit Config, merge this into mcpServers, then fully quit and reopen Claude Desktop.

We couldn’t confirm it starts correctly

We ran the install command but it didn't respond within our test window — this can mean a slow first-time install rather than a real problem.

npx -y @velinussage/locus-agent-skill

Process exited before answering initialize.

This is an experimental automated check and can have false negatives — missing environment variables, a slow cold install, etc. It doesn’t necessarily mean something’s wrong. Last checked 2d ago.

Overview

Security & health

What it can reach and how reliably it runs — from our own checks, not the maintainer’s claims.

ActiveLast checked 2d ago

Recent health check succeeded.

6/6 checks healthy over the last 40d

Supply-chain signal

No high-severity advisories surfaced by our automated scan.

Critical 0High 0Medium 0Low 0

Scanned 7d ago via OSV.dev · @velinussage/locus-agent-skill (npm)

Adoption & maintenance

Factual signals from GitHub, npm, and our automated checks — not a rating.

npm downloads1.2kPackage downloads in the last 30 days.
Last commit11d agoMost recent push to the default branch.
Install checkInconclusiveDidn't respond in our test window — often a slow first install.
Directory activity1 viewsConfig copies, upvotes, and views on AllMCPs.

From the project README

@velinussage/locus-agent-skill

skills.sh

Install three Locus agent skills: the general MCP/REST/A2A capability guide, the opt-in surrounding-area purchase workflow, and the property-tax protest workflow.

Locus returns awareness and verification steps, not a verdict. Do not use it to score, rank, screen, value, predict, or label a person, property, block, or neighborhood as safe or unsafe.

Install with this package

Terminal
npx @velinussage/locus-agent-skill add

By default this writes locus-agent-tools/, locus-surrounding-area-analysis/, and locus-property-tax-protest/ to $CODEX_HOME/skills or ~/.codex/skills. The general public skill routes relevant requests to the specialist workflows; it does not turn ordinary Locus discovery into a paid flow.

Options:

Terminal
npx @velinussage/locus-agent-skill add --target ./skills
npx @velinussage/locus-agent-skill add --target ./skills --force
npx @velinussage/locus-agent-skill --print

Install with GitHub CLI

bash
gh skill install velinussage/locus-agent-skill locus-agent-tools

Preview first:

bash
gh skill preview velinussage/locus-agent-skill locus-agent-tools

Install with skills.sh

The same skill is also available from the public GitHub repo through the open skills CLI:

Terminal
npx skills add velinussage/locus-agent-skill --skill locus-agent-tools

Useful variants:

Terminal
npx skills add velinussage/locus-agent-skill --skill locus-agent-tools -g
npx skills add velinussage/locus-agent-skill --skill locus-agent-tools -a claude-code -a codex
npx skills use velinussage/locus-agent-skill --skill locus-agent-tools

Connect to Locus MCP

config.json
{
  "mcpServers": {
    "locus": {
      "type": "http",
      "url": "https://mcp.locus.report/mcp"
    }
  }
}

What the skills teach agents

  • The full free catalog exposes 104 tools, including 58 national free lanes. Read the live catalog because rollout configuration can change the visible total.
  • locus_place_facts is the best first call when supported.
  • locus_lane_availability shows national, local, varies, not-covered, and degraded lanes before payment.
  • Free tools stay read-only and cited.
  • locus_rental_registration_check declares its scope per jurisdiction. Long-term registration is wired in Minneapolis, Montgomery County, New York City, and Seattle; Denver is short-term-license only; Kansas City is building-enforcement only. It returns no legal-rental or compliance verdict.
  • The property-tax protest workflow keeps deadline, filing-guide, evidence, browser handoff, and published-outcome facts separate from the owner's own filing and value position.
  • Paid endpoints use live x402 discovery, may offer USDC on Base and Solana, and require explicit user authorization. Agents choose one complete accepts[] entry.
  • The surrounding-area workflow requires two separate approvals: $0.10 for the reusable JSON packet, then $0.15 for an eligible HTML/PDF report within 24 hours. Packet and report retrieval are proof-gated for 90 days.

Docs: https://docs.locus.report/skill.md

Paid endpoint surface

The live paid index is authoritative: https://api.locus.report/.well-known/ai-tool/index.json. Selected endpoints are:

EndpointCurrent priceNotes
POST /api/locus-place-report$0.05Compiled cited property-context artifact.
POST /api/locus-place-report-batch$0.25Async 3-50 address portfolio job, one settlement.
POST /api/locus-local-trend-brief$0.05Permit, 311, and code-case local-change brief where source coverage is strong enough.
POST /api/locus-local-policy-brief$0.07Property-relevant bills, agendas, ordinances, tax, fee, bond, housing, and permit-change context.
POST /api/locus-before-you-sign$0.07Pre-decision bundle over parcel, trend, and policy components.
POST /api/locus-environmental-context$0.05Address-level EPA TRI/RCRA/SDWIS/radon context ranked by distance where possible.
POST /api/locus-property-tax$0.05Residential property-tax artifact with assessed value, annual tax, history, effective rate, and provenance.
POST /api/locus-rental-registration-check$0.01Paid dual of the free exact-building long-term-registration, short-term-license, or building-enforcement lookup, depending on jurisdiction.
POST /api/locus-nyc-recording-history$0.01Paid dual of the free bounded NYC ACRIS document index. No party or unit data and no title conclusion.
POST /api/locus-renovation-site-context$0.10Fixed renovation evidence workflow over parcel, permit, soil, terrain, flood, wetland, and radon context.
POST /api/locus-solar-property-screen$0.49Rollout-gated private one-address roof-solar and historical financial-reference screen.
POST /api/locus-large-site-satellite-change$0.15Direct Copernicus REST-only pair of dated Sentinel-2 Level-2A images for a 1-100 square-kilometre site. No automated change or condition claim.
POST /api/locus-surrounding-area-analysis$0.10Stored, bounded JSON evidence packet. Charge-suppressed unless the subject, surrounding-parcel foundation, and another component complete.
POST /api/locus-surrounding-area-report$0.15One HTML/PDF rendering of an eligible packet; no research rerun.
Six paid-only atomic REST routes$0.01 eachWorkplace jobs, Wikipedia, Commons metadata, PFAS, NEI, and electricity. No free, MCP, or A2A counterpart.
locus-evaluation-packet paid-only atomic$0.35Lender evaluation-support packet. No free, MCP, or A2A counterpart.

Unsupported, discovery-only, commercial, or insufficient-data cases return free diagnostics instead of charging where applicable.

License

MIT.

Read the full README View source on GitHub

Reviews

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Frequently Asked Questions about Locus

Locus is an MCP server that provides official US-address public records on zoning, flood, parcel, permits, and taxes. It offers free lookup and x402-paid compiled reports and workflows, while returning cited awareness and verification steps rather than verdicts, scores, or safety labels.

Connect it as an HTTP MCP server using the URL https://mcp.locus.report/mcp. Add a server named “locus” with type “http” in your MCP client configuration.

Locus can look up zoning, flood, parcel, permit, and tax records, along with other cataloged address-related data. Its free catalog includes 104 tools, including 58 national free lanes, but the live catalog should be checked because rollout configuration can change.

Paid Locus endpoints use live x402 discovery and require explicit user authorization before payment. Available payment options may include USDC on Base and Solana, and agents must choose one complete entry from the endpoint’s accepts array; current prices are defined by the live paid index.

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