`asp_payment_limit`

Pack: drug-prices · Endpoint: https://gateway.pipeworx.io/drug-prices/mcp

What Medicare Part B PAYS for a drug administered by a provider — the quarterly ASP payment limit, set by statute at 106% of the manufacturer-reported Average Sales Price. Look up by HCPCS J-code (“J9271”) or drug name (“pembrolizumab”, “Keytruda”). This is the clinic/infusion benchmark: oncology drugs, biologics, injectables and vaccines. Returns the limit per its dosage unit, the quarter it is in force, AND the earlier quarter of ASP data it was derived from — those differ by two quarters and the gap matters. For retail pharmacy acquisition cost use nadac_price instead. Keyless.

Parameters

Name	Type	Required	Description
`hcpcs`	string	no	HCPCS code, e.g. “J9271” (pembrolizumab), “J0178” (aflibercept), “90632”.
`drug`	string	no	Drug name or fragment matched against the short description, e.g. “pembrolizumab”, “rituximab”. Give either this or `hcpcs`.
`quarter`	string	no	Optional quarter as a date in it, or “YYYY-Qn” (e.g. “2026-Q1”, “2026-01-01”). Defaults to the most recent quarter loaded.
`limit`	number	no	Max codes to return when searching by name, 1–100 (default 20).

Example call

Arguments

{
  "hcpcs": "J9271"
}

curl

curl -X POST https://gateway.pipeworx.io/drug-prices/mcp \
  -H 'Content-Type: application/json' \
  -d '{"jsonrpc":"2.0","id":1,"method":"tools/call","params":{"name":"asp_payment_limit","arguments":{"hcpcs":"J9271"}}}'

TypeScript (@pipeworx/sdk)

import { Pipeworx } from '@pipeworx/sdk';
const pipeworx = new Pipeworx();

const result = await pipeworx.call('asp_payment_limit', {
  "hcpcs": "J9271"
});

More examples

{
  "drug": "pembrolizumab"
}

{
  "hcpcs": "J9271",
  "quarter": "2026-Q1"
}

Connect

Add this to your MCP client config, or use one-click install buttons:

{
  "mcpServers": {
    "drug-prices": {
      "url": "https://gateway.pipeworx.io/drug-prices/mcp"
    }
  }
}

See Getting Started for client-specific install steps.

asp_payment_limit