Costkits MCP Server

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answering

Costkits MCP is answering right now. Last checked 8 min ago. 80 installs a week from npm. It exposes 13 tools. Last commit 19 Oct 2026.

Free hosted MCP server: US healthcare procedure cost estimates and provider pricing. No API key.

Installs per day peak 234 · avg 15 · -70% w/w

a month agotoday

Uptime history 18 days of history

18 days agonow

100.0%

Uptime 24h

91 of 91 checks

Tools

read from the server

1661 ms

Response time

average over 24h

Installs / week

npm and PyPI

What changed 1

Every tool that appeared, vanished or quietly changed what it asks for. Recorded since 19 October 2026. No other catalogue keeps this.

19 Oct a tool appeared compare_bill_amount

Nothing serious here today

Today is the operative word: we check Costkits MCP every 15 minutes and re-read its code on every release. Watch it and you find out the day that stops being true.

Connect this server

Endpoint below is the one we actually reach during checks — not the one copied from a README. Last verified 8 min ago.

Claude Code Claude Desktop Codex Cursor VS Code

run in your terminal

claude mcp add costkits-mcp --transport http https://mcp.costkits.com/mcp

Settings → Connectors → Add custom connector, then paste this address

https://mcp.costkits.com/mcp

~/.codex/config.toml

[mcp_servers.costkits-mcp]
url = "https://mcp.costkits.com/mcp"

.cursor/mcp.json

{
  "mcpServers": {
    "costkits-mcp": {
      "url": "https://mcp.costkits.com/mcp"
    }
  }
}

.vscode/mcp.json

{
  "servers": {
    "costkits-mcp": {
      "type": "http",
      "url": "https://mcp.costkits.com/mcp"
    }
  }
}

Available tools 13

Read directly from the server with tools/list, grouped by what they act on. If a tool disappears, we record the date.

calculate

calculate_liability

Stateless insurance math: given an allowed amount and a plan snapshot (deductible, coinsurance, OOP max), returns exact patient responsibility, plan payment, and the breakdown, plus p25/p75 scenarios. Use when you already have a dollar amount (e.g. from an EOB or a prior estimate).

carriers

list_carriers

All insurance carrier keys supported by the coverage tools (aetna, cigna, bcbs, medicare, ...). Works on the Free plan — also a good API-key sanity check.

compare

compare_bill_amount

Compares one dollar amount from a medical bill or explanation of benefits with the typical allowed-amount range (low, median, high) for the same procedure in the same US state, and says whether it is below, within or above that range, with questions worth asking the billing office. Pass amount_type 'billed' for the charge on the bill or 'allowed' for the insurer's allowed amount. Billed charges are usually higher than allowed amounts, so a high billed charge alone is not an error. Needs only the procedure, state and amount; do not send names, dates, account or member numbers.

coverage

get_coverage

Insurance coverage rules for a procedure/carrier combination. aspect: 'summary' (status + plain English), 'prior-auth', 'cost-sharing' (deductible/coinsurance/ACA preventive), 'frequency' (how often covered, age rules), or 'triggers' (Pro plan: billing events that flip a $0 preventive claim to diagnostic — the highest-signal aspect).

demo

demo_estimate

Static sample cost estimate (colonoscopy in Connecticut) from the CostKits API. Works with NO API key — use it to verify connectivity and see the response shape.

estimate

estimate_procedure_cost

Returns the typical allowed-amount range (low, median, high) for one medical procedure in one US state, the usual billing components (facility, physician, anesthesia, pathology), and the data vintage. If the user chooses to give their own deductible, coinsurance and out-of-pocket figures, it also returns an estimated patient share. These are estimates of typical prices from hospital price transparency and Medicare data, not quotes. Only the procedure and state are required; ZIP code and plan figures are optional and are used only for this one calculation.

financial

check_financial_assistance

Screen a household for hospital financial assistance (charity care): returns income as a percent of the federal poverty guidelines, the typical range hospital policies cover, what federal rules (IRS 501(r)) do and do not guarantee, and next steps. Use when a user asks whether they might qualify for help paying a hospital bill. It is a screening estimate, not an eligibility decision: each hospital sets its own limits. Needs household size and annual household income; do not ask for names, account numbers or bill details.

full

full_estimate

One call chaining procedure ontology + cost + providers + patient liability. Cheapest way (one metered request) to get the complete picture. Use `fields` to request a subset; liability requires the plan_* inputs.

procedure

get_procedure_details

Structured knowledge about one procedure. aspect='facts' returns LLM-ready billing rules and cost drivers (best for grounding an answer); 'bundle' explains which separate bills to expect (facility, physician, anesthesia...); 'full' returns the complete ontology.

procedures

list_procedures

The full CostKits catalog: 30 procedures with slugs, display names, categories, and CPT codes (paginated).

provider

get_provider

Public profile for a single provider by 10-digit NPI number: name, specialty, address, entity type.

providers

find_providers

Lists up to 5 facilities in one US state that perform a procedure, with name, address and a pricing_status field: 'observed' means a negotiated rate is published in that facility's price transparency data, 'estimated' means only a state-level benchmark applies, 'none' means no price data. Dollar amounts are not returned. The list is partial and is not a ranking or a recommendation.

resolve

resolve_procedure

Maps a free-text procedure name ('knee mri', 'gallbladder removal') to a CostKits catalog slug with a confidence score. Returns best_match and alternatives; best_match is null when the procedure is not in the catalog.

Endpoints

URL	Transport	State	Latency	Checked
https://mcp.costkits.com/mcp	streamable-http	answering	3213 ms	8 min ago

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Costkits MCP — questions

Answers built from our own checks of this server.

What can Costkits MCP do?

It exposes 13 tools, read directly from the server on our last check. Among them: calculate_liability, check_financial_assistance, compare_bill_amount, demo_estimate, estimate_procedure_cost, find_providers and 7 more. The full list with descriptions is on this page — we take it from the server itself via tools/list, not from a README. How MCP servers expose tools in the first place →

Is Costkits MCP working right now?

We send a real MCP handshake every 15 minutes. Over the last 24 hours 91 of 91 checks got a reply (100.0%), average response time 1661 ms. The bar chart above shows every period we have measured.

How do I connect Costkits MCP?

Copy the ready config from this page. We generate it for Claude Code, Claude Desktop, Codex, Cursor and VS Code, each in the form that client actually reads. It is a remote server, so there is nothing to install — the client connects to the address.

Does Costkits MCP need an API key?

No. Costkits MCP completed a full MCP handshake with us as an anonymous client and listed its tools without asking for anything. All 13 of them are readable on this page. This is what we observed, not what the docs claim.

How many people use Costkits MCP?

The npm package @costkits/costkits-mcp was installed 80 times in the last week. Week over week that is -70%. We show installs rather than GitHub stars on purpose: a star is a bookmark, an install is someone actually running it.

Is Costkits MCP open source?

The code is open source: it is published under the MIT licence, written in JavaScript, 0 stars on GitHub and 1 open issue. The licence covers the code in the repository, not the hosted service at mcp.costkits.com, which runs on its operator's own terms.