Agent Service · x402 · early usage

Kumar 2016 IMWG measurable serum+urine M-protein response

by api.magentlab.com · discovered, not yet claimed by its owner · updated 2026-10-12

30d calls4

30d payers2

MethodPOST

Outputjson

Mirrored from Coinbase's public x402 Bazaar. The description is the provider's own text and has not been reviewed here; the payment requirements are copied as published.

What it does

Kumar 2016 IMWG measurable serum+urine M-protein response. First-match PD, sCR, CR, VGPR, PR, MR, or SD from caller-assigned flags. sCR is CR plus normal FLC ratio and no clonal BM cells by IHC. CR is negative serum and urine IFE, no plasmacytomas, and BMPC <5%. VGPR is electrophoresis-negative or ≥90% serum M-protein reduction with urine M-protein <100 mg/24 h. Not a diagnosis. Not MRD. Not FLC-only. magent does not assay labs.

Tags: imwg · myeloma · response · hematology · calculator · bazaar

Call contract

Method: POST
Input: HTTP request
Output: json
Last paid call: 2026-10-12

Input example from Bazaar metadata

{
  "items": [
    {
      "bmpc_lt_5": true,
      "electrophoresis_negative": false,
      "flc_ratio_normal": true,
      "ife_serum_negative": true,
      "ife_urine_negative": true,
      "imwg_pd": false,
      "no_clonal_cells_ihc": true,
      "plasmacytomas_absent": true,
      "serum_m_reduction_25_to_49": false,
      "serum_m_reduction_ge_50": false,
      "serum_m_reduction_ge_90": false,
      "urine_m_lt_100": false,
      "urine_m_pr": false,
      "urine_m_reduction_50_to_89": false
    },
    {
      "bmpc_lt_5": true,
      "electrophoresis_negative": false,
      "flc_ratio_normal": true,
      "ife_serum_negative": true,
      "ife_urine_negative": true,
      "imwg_pd": false,
      "no_clonal_cells_ihc": true,
      "plasmacytomas_absent": true,
      "serum_m_reduction_25_to_49": false,
      "serum_m_reduction_ge_50": false,
      "serum_m_reduction_ge_90": false,
      "urine_m_lt_100": false,
      "urine_m_pr": false,
      "urine_m_reduction_50_to_89": false
    }
  ]
}

Output example

{
  "count": 2,
  "items": [
    {
      "citation": {
        "authors": "Kumar S, Paiva B, Anderson KC, Durie B, Landgren O, Moreau P, Munshi N, Lonial S, Bladé J, Mateos MV, Dimopoulos M, Kastritis E, Boccadoro M, Orlowski R, Zamagni E, Palumbo A, San Miguel J, Avet-Loiseau H, Goldschmidt H, van de Donk NWCJ, et al.",
        "doi": "10.1016/S1470-2045(16)30206-6",
        "id": "kumar-2016",
        "pmid": "27511158",
        "source": "Lancet Oncol. 2016;17(8):e328-e346",
        "title": "International Myeloma Working Group consensus criteria for response and minimal residual disease assessment in multiple myeloma"
      },
      "cr_bits": true,
      "criteria": [
        {
          "factor": "imwg_pd",
          "met": false
        },
        {
          "factor": "ife_serum_negative",
          "met": true
        },
        {
          "factor": "ife_urine_negative",
          "met": true
        },
        {
          "factor": "plasmacytomas_absent",
          "met": true
        },
        {
          "factor": "bmpc_lt_5",
          "met": true
        },
        {
          "factor": "cr_bits",
          "met": true
        },
        {
          "factor": "flc_ratio_normal",
          "met": true
        },
        {
          "factor": "no_clonal_cells_ihc",
          "met": true
        },
        {
          "factor": "electrophoresis_negative",
          "met": false
        },
        {
          "factor": "serum_m_reduction_ge_90",
          "met": false
        },
        {
          "factor": "urine_m_lt_100",
          "met": false
        },
        {
          "factor": "serum_m_reduction_ge_50",
          "met": false
        },
        {
          "factor": "urine_m_pr",
          "met": false
        },
        {
          "factor": "serum_m_reduction_25_to_49",
          "met": false
        },
        {
          "factor": "urine_m_reduction_50_to_89",
          "met": false
        }
      ],
      "disclaimer": "Not a medical device. Deterministic published-formula or published-code output for autonomous agents. A licensed clinician remains responsible for patient care and billing submissions.",
      "formula": "imwg_response",
      "formula_expression": "Kumar 2016 IMWG measurable serum+urine M-protein response, first-match: PD if imwg_pd; else sCR iff CR_bits and flc_ratio_normal and no_clonal_cells_ihc; else CR iff CR_bits; else VGPR iff electrophoresis_negative or (serum_m_reduction_ge_90 and urine_m_lt_100); else PR iff serum_m_reduction_ge_50 and urine_m_pr; else MR iff serum_m_reduction_25_to_49 and urine_m_reduction_50_to_89; else SD. CR_bits = ife_serum_negative and ife_urine_negative and plasmacytomas_absent and bmpc_lt_5 (strictly <5% marrow plasma cells). Not FLC-only or nonsecretory. Not MRD. Not a diagnosis",
      "imwg_response": "sCR"
    },
    {
      "citation": {
        "authors": "Kumar S, Paiva B, Anderson KC, Durie B, Landgren O, Moreau P, Munshi N, Lonial S, Bladé J, Mateos MV, Dimopoulos M, Kastritis E, Boccadoro M, Orlowski R, Zamagni E, Palumbo A, San Miguel J, Avet-Loiseau H, Goldschmidt H, van de Donk NWCJ, et al.",
        "doi": "10.1016/S1470-2045(16)30206-6",
        "id": "kumar-2016",
        "pmid": "27511158",
        "source": "Lancet Oncol. 2016;17(8):e328-e346",
        "title": "International Myeloma Working Group consensus criteria for response and minimal residual disease assessment in multiple myeloma"
      },
      "cr_bits": true,
      "criteria": [
        {
          "factor": "imwg_pd",
          "met": false
        },
        {
          "factor": "ife_serum_negative",
          "met": true
        },
        {
          "factor": "ife_urine_negative",
          "met": true
        },
        {
          "factor": "plasmacytomas_absent",
          "met": true
        },
        {
          "factor": "bmpc_lt_5",
          "met": true
        },
        {
          "factor": "cr_bits",
          "met": true
        },
        {
          "factor": "flc_ratio_normal",
          "met": true
        },
        {
          "factor": "no_clonal_cells_ihc",
          "met": true
        },
        {
          "factor": "electrophoresis_negative",
          "met": false
        },
        {
          "factor": "serum_m_reduction_ge_90",
          "met": false
        },
        {
          "factor": "urine_m_lt_100",
          "met": false
        },
        {
          "factor": "serum_m_reduction_ge_50",
          "met": false
        },
        {
          "factor": "urine_m_pr",
          "met": false
        },
        {
          "factor": "serum_m_reduction_25_to_49",
          "met": false
        },
        {
          "factor": "urine_m_reduction_50_to_89",
          "met": false
        }
      ],
      "disclaimer": "Not a medical device. Deterministic published-formula or published-code output for autonomous agents. A licensed clinician remains responsible for patient care and billing submissions.",
      "formula": "imwg_response",
      "formula_expression": "Kumar 2016 IMWG measurable serum+urine M-protein response, first-match: PD if imwg_pd; else sCR iff CR_bits and flc_ratio_normal and no_clonal_cells_ihc; else CR iff CR_bits; else VGPR iff electrophoresis_negative or (serum_m_reduction_ge_90 and urine_m_lt_100); else PR iff serum_m_reduction_ge_50 and urine_m_pr; else MR iff serum_m_reduction_25_to_49 and urine_m_reduction_50_to_89; else SD. CR_bits = ife_serum_negative and ife_urine_negative and plasmacytomas_absent and bmpc_lt_5 (strictly <5% marrow plasma cells). Not FLC-only or nonsecretory. Not MRD. Not a diagnosis",
      "imwg_response": "sCR"
    }
  ],
  "path": "/api/calc/imwg_response"
}

Use with an agent

Discover. Agents find this listing with GET https://bazaar.saylorinnovations.com/discovery/search?query=…, the MCP tool search_resources, or /discovery/resources.
Inspect. Fetch /resources/39399.json for the price and payment options.
Pay. Call GET https://api.magentlab.com/api/calc/imwg_response. The provider answers 402 with its payment requirements. An x402 client signs one of the options below and retries with PAYMENT-SIGNATURE.
Execute. The provider returns 200 with the data. Agent Bazaar is not in the request path and never sees your payment.

For humans

You don't need an account or an API key; you need a wallet holding a small amount of USDC on Base, and an x402-capable client (see the examples below). Call the endpoint unpaid first to see exactly what it asks for.

Pricing & payment

Price: $0.005 / request
Protocol: x402 v2
Auth: No account or API key. Pay per request.
Networks: Base
Demand: 4 calls · 2 unique payers in 30d (public x402 Bazaar data)

x402 payment requirements

Scheme	Network	Asset	Amount	Pay to	Timeout
exact	Base eip155:8453	USDC	$0.005	0x836Be278f1739fB4308091cD1852F7971Bc19Ee2	600s

accepts[] (raw JSON)

[
  {
    "scheme": "exact",
    "network": "eip155:8453",
    "payTo": "0x836Be278f1739fB4308091cD1852F7971Bc19Ee2",
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "amount": "5000",
    "amountUsd": 0.005,
    "maxTimeoutSeconds": 600
  }
]

Schemas

Output schema (JSON Schema)

{
  "properties": {
    "example": {
      "type": "object"
    },
    "type": {
      "type": "string"
    }
  },
  "required": [
    "type"
  ],
  "type": "object"
}

Example shape — generated from the schema, not a captured live response

{
  "example": {},
  "type": "string"
}

Examples

curl

curl "https://api.magentlab.com/api/calc/imwg_response"
# -> 402 Payment Required, accepts[] lists how to pay
# retry with a PAYMENT-SIGNATURE (or PAYMENT header) once paid

JavaScript

const res = await fetch("https://api.magentlab.com/api/calc/imwg_response");
if (res.status === 402) {
  const { accepts } = await res.json();
  // pay one of accepts[] via an x402 client, then retry with the payment header
}

Python

import httpx
res = httpx.get("https://api.magentlab.com/api/calc/imwg_response")
if res.status_code == 402:
    accepts = res.json()["accepts"]
    # pay one of accepts[] via an x402 client, then retry with the payment header

Details

Provider: api.magentlab.com
Endpoint: https://api.magentlab.com/api/calc/imwg_response
Machine-readable: /resources/39399.json