data.spencermcw.com
Distill sells pre-computed answers to narrow factual questions to AI agents, per call, over x402 (HTTP 402 and a USDC payment on Base). Every answer carries its sources, an as_of time, a computed confidence and the method version that produced it. No account, API key or signup.
DataLiveeip155:8453Exactvia cdp
Calls · 30d
2
This endpoint's own trailing-30-day call count, as published by the upstream catalog and snapshotted daily. 5 snapshots so far.
$0.75
Verified settled volume
31 settlements proven x402 by their on-chain EIP-3009 marker.
$0.010
Listed price
As published in the catalog. Always read the live 402 before paying.
2
Calls · 30d
Upstream's own call count for this endpoint, not ours.
2
Unique payers · 30d
Last called 2026-10-23 04:28Z
—
Upstream on-chain volume
Reported by the source catalog.
Paid to
0xE6900aE625875b748f56Fb45C3e06a59Be8870DFThe wallet the 402 directs payment to. Its whole payment record — every payer, every chain — is on the merchant page.
Asset 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913
Provider
The payTo wallet does not resolve to a registered ERC-8004 agent. That is not a verdict on the service — most of the catalog is unregistered.
Live 402 challenge
Captured by the enrichment pass, not read just now. Prices can change — always read the 402 the endpoint answers with.
{
"error": "payment required",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0xE6900aE625875b748f56Fb45C3e06a59Be8870DF",
"amount": "10000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 300
}
],
"resource": {
"url": "https://data.spencermcw.com/v1/medicare/partd/plan",
"mimeType": "application/json",
"description": "What does this Medicare Part D plan cost and cover? Premium, deductible, service area, cost sharing by tier and one drug’s terms for a contract-plan-segment id, computed by Distill from CMS’s monthly formulary files. Updated monthly. $0.01 per call (x402, USDC on Base); 3 free calls a day."
},
"extensions": {
"bazaar": {
"info": {
"input": {
"type": "http",
"method": "GET",
"queryParams": {
"plan": "H0028-063-000",
"rxcui": "617311",
"plan_year": 2027
}
},
"output": {
"type": "json",
"example": {
"data": {
"snp": null,
"drug": {
"tier": 1,
"rxcui": "617311",
"covered": true,
"step_therapy": false,
"quantity_limit": null,
"negotiated_drug": false,
"terms_vary_by_ndc": false,
"prior_authorization": false
},
"kind": "MA",
"plan": "H0028-063-000",
"tiers": [
{
"tier": 1,
"specialty": false,
"standard_mail": {
"type": "copay",
"amount": "10.00"
},
"preferred_mail": {
"type": "copay",
"amount": "0.00"
},
"standard_retail": {
"type": "copay",
"amount": "0.00"
},
"preferred_retail": {
"type": "not_offered",
"amount": null
},
"deductible_applies": false
},
{
"tier": 2,
"specialty": false,
"standard_mail": {
"type": "copay",
"amount": "20.00"
},
"preferred_mail": {
"type": "copay",
"amount": "0.00"
},
"standard_retail": {
"type": "copay",
"amount": "0.00"
},
"preferred_retail": {
"type": "not_offered",
"amount": null
},
"deductible_applies": false
},
{
"tier": 3,
"specialty": false,
"standard_mail": {
"type": "coinsurance",
"amount": "19"
},
"preferred_mail": {
"type": "coinsurance",
"amount": "19"
},
"standard_retail": {
"type": "coinsurance",
"amount": "19"
},
"preferred_retail": {
"type": "not_offered",
"amount": null
},
"deductible_applies": true
},
{
"tier": 4,
"specialty": false,
"standard_mail": {
"type": "coinsurance",
"amount": "50"
},
"preferred_mail": {
"type": "coinsurance",
"amount": "50"
},
"standard_retail": {
"type": "coinsurance",
"amount": "50"
},
"preferred_retail": {
"type": "not_offered",
"amount": null
},
"deductible_applies": true
},
{
"tier": 5,
"specialty": true,
"standard_mail": {
"type": "coinsurance",
"amount": "32"
},
"preferred_mail": {
"type": "coinsurance",
"amount": "32"
},
"standard_retail": {
"type": "coinsurance",
"amount": "32"
},
"preferred_retail": {
"type": "not_offered",
"amount": null
},
"deductible_applies": true
}
],
"premium": "0.00",
"file_date": "2026-10-08",
"plan_name": "Humana Essentials Plus Giveback (HMO)",
"plan_year": 2027,
"deductible": "50.00",
"formulary_id": "00027366",
"service_area": {
"counties": 7,
"ma_regions": [],
"pdp_regions": []
},
"contract_name": "CHA HMO, INC."
}
}
}
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"input"
],
"properties": {
"input": {
"type": "object",
"required": [
"type",
"method"
],
"properties": {
"type": {
"type": "string",
"const": "http"
},
"method": {
"enum": [
"GET"
],
"type": "string"
},
"queryParams": {
"type": "object",
"required": [
"plan"
],
"properties": {
"ndc": {
"type": "string",
"pattern": "^\\d{11}$"
},
"plan": {
"type": "string",
"pattern": "^[A-Za-z]\\d{4}-\\d{3}-\\d{3}$"
},
"rxcui": {
"type": "string",
"pattern": "^\\d{1,10}$"
},
"plan_year": {
"type": "integer",
"maximum": 2100,
"minimum": 2000
}
}
}
},
"additionalProperties": false
},
"output": {
"type": "object",
"required": [
"type"
],
"properties": {
"type": {
"type": "string"
},
"example": {
"type": "object",
"properties": {
"data": {
"type": "object",
"required": [
"plan_year",
"file_date",
"plan",
"plan_name",
"contract_name",
"kind",
"snp",
"formulary_id",
"premium",
"deductible",
"service_area",
"tiers",
"drug"
],
"properties": {
"snp": {
"type": [
"string",
"null"
]
},
"drug": {
"anyOf": [
{
"anyOf": [
{
"type": "object",
"required": [
"rxcui",
"covered",
"tier",
"prior_authorization",
"step_therapy",
"quantity_limit",
"negotiated_drug",
"terms_vary_by_ndc"
],
"properties": {
"tier": {
"type": "integer",
"maximum": 9007199254740991,
"minimum": -9007199254740991
},
"rxcui": {
"type": "string"
},
"covered": {
"type": "boolean",
"const": true
},
"step_therapy": {
"type": "boolean"
},
"quantity_limit": {
"anyOf": [
{
"type": "object"
},
{
"type": "null"
}
]
},
"negotiated_drug": {
"type": "boolean"
},
"terms_vary_by_ndc": {
"type": "boolean"
},
"prior_authorization": {
"type": "boolean"
}
},
"additionalProperties": false
},
{
"type": "object",
"required": [
"rxcui",
"covered"
],
"properties": {
"rxcui": {
"type": "string"
},
"covered": {
"type": "boolean",
"const": false
}
},
"additionalProperties": false
}
]
},
{
"type": "null"
}
]
},
"kind": {
"type": "string"
},
"plan": {
"type": "string"
},
"tiers": {
"type": "array",
"items": {
"type": "object",
"required": [
"tier",
"specialty",
"deductible_applies",
"preferred_retail",
"standard_retail",
"preferred_mail",
"standard_mail"
],
"properties": {
"tier": {
"type": "integer",
"maximum": 9007199254740991,
"minimum": -9007199254740991
},
"specialty": {
"type": "boolean"
},
"standard_mail": {
"type": "object"
},
"preferred_mail": {
"type": "object"
},
"standard_retail": {
"type": "object"
},
"preferred_retail": {
"type": "object"
},
"deductible_applies": {
"type": "boolean"
}
},
"additionalProperties": false
}
},
"premium": {
"type": [
"string",
"null"
]
},
"file_date": {
"type": "string"
},
"plan_name": {
"type": "string"
},
"plan_year": {
"type": "integer",
"maximum": 9007199254740991,
"minimum": -9007199254740991
},
"deductible": {
"type": [
"string",
"null"
]
},
"formulary_id": {
"type": "string"
},
"service_area": {
"type": "object",
"required": [
"counties",
"ma_regions",
"pdp_regions"
],
"properties": {
"counties": {
"type": "integer",
"maximum": 9007199254740991,
"minimum": -9007199254740991
},
"ma_regions": {
"type": "array"
},
"pdp_regions": {
"type": "array"
}
},
"additionalProperties": false
},
"contract_name": {
"type": "string"
}
},
"additionalProperties": false
}
}
}
}
}
}
}
}
},
"x402Version": 2
}Accepts
The payment requirements as published to the catalog. Read the live 402 before paying — a price here is a claim, not a quote.
0.01USDC≈ $0.01 USD
on Base · exact scheme
Pay 0.01 USDC on Base to 0xE690…870DF. The signed payment is good for 5 minutes.
- Paid to
- 0xE690…870DF
- USD Coin contract
- 0x8335…02913
- Payment window
- 5 minutes
- As published
- 10000 smallest units
The catalog’s raw entry
[
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0xE6900aE625875b748f56Fb45C3e06a59Be8870DF",
"amount": "10000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 300
}
]Extensions
{
"bazaar": {
"info": {
"input": {
"type": "http",
"method": "GET",
"queryParams": {
"plan": "H0028-063-000",
"rxcui": "617311",
"plan_year": 2027
}
},
"output": {
"type": "json",
"example": {
"data": {
"snp": null,
"drug": {
"tier": 1,
"rxcui": "617311",
"covered": true,
"step_therapy": false,
"quantity_limit": null,
"negotiated_drug": false,
"terms_vary_by_ndc": false,
"prior_authorization": false
},
"kind": "MA",
"plan": "H0028-063-000",
"tiers": [
{
"tier": 1,
"specialty": false,
"standard_mail": {
"type": "copay",
"amount": "10.00"
},
"preferred_mail": {
"type": "copay",
"amount": "0.00"
},
"standard_retail": {
"type": "copay",
"amount": "0.00"
},
"preferred_retail": {
"type": "not_offered",
"amount": null
},
"deductible_applies": false
},
{
"tier": 2,
"specialty": false,
"standard_mail": {
"type": "copay",
"amount": "20.00"
},
"preferred_mail": {
"type": "copay",
"amount": "0.00"
},
"standard_retail": {
"type": "copay",
"amount": "0.00"
},
"preferred_retail": {
"type": "not_offered",
"amount": null
},
"deductible_applies": false
},
{
"tier": 3,
"specialty": false,
"standard_mail": {
"type": "coinsurance",
"amount": "19"
},
"preferred_mail": {
"type": "coinsurance",
"amount": "19"
},
"standard_retail": {
"type": "coinsurance",
"amount": "19"
},
"preferred_retail": {
"type": "not_offered",
"amount": null
},
"deductible_applies": true
},
{
"tier": 4,
"specialty": false,
"standard_mail": {
"type": "coinsurance",
"amount": "50"
},
"preferred_mail": {
"type": "coinsurance",
"amount": "50"
},
"standard_retail": {
"type": "coinsurance",
"amount": "50"
},
"preferred_retail": {
"type": "not_offered",
"amount": null
},
"deductible_applies": true
},
{
"tier": 5,
"specialty": true,
"standard_mail": {
"type": "coinsurance",
"amount": "32"
},
"preferred_mail": {
"type": "coinsurance",
"amount": "32"
},
"standard_retail": {
"type": "coinsurance",
"amount": "32"
},
"preferred_retail": {
"type": "not_offered",
"amount": null
},
"deductible_applies": true
}
],
"premium": "0.00",
"file_date": "2026-10-08",
"plan_name": "Humana Essentials Plus Giveback (HMO)",
"plan_year": 2027,
"deductible": "50.00",
"formulary_id": "00027366",
"service_area": {
"counties": 7,
"ma_regions": [],
"pdp_regions": []
},
"contract_name": "CHA HMO, INC."
}
}
}
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"input"
],
"properties": {
"input": {
"type": "object",
"required": [
"type",
"method"
],
"properties": {
"type": {
"type": "string",
"const": "http"
},
"method": {
"enum": [
"GET"
],
"type": "string"
},
"queryParams": {
"type": "object",
"required": [
"plan"
],
"properties": {
"ndc": {
"type": "string",
"pattern": "^\\d{11}$"
},
"plan": {
"type": "string",
"pattern": "^[A-Za-z]\\d{4}-\\d{3}-\\d{3}$"
},
"rxcui": {
"type": "string",
"pattern": "^\\d{1,10}$"
},
"plan_year": {
"type": "integer",
"maximum": 2100,
"minimum": 2000
}
}
}
},
"additionalProperties": false
},
"output": {
"type": "object",
"required": [
"type"
],
"properties": {
"type": {
"type": "string"
},
"example": {
"type": "object",
"properties": {
"data": {
"type": "object",
"required": [
"plan_year",
"file_date",
"plan",
"plan_name",
"contract_name",
"kind",
"snp",
"formulary_id",
"premium",
"deductible",
"service_area",
"tiers",
"drug"
],
"properties": {
"snp": {
"type": [
"string",
"null"
]
},
"drug": {
"anyOf": [
{
"anyOf": [
{
"type": "object",
"required": [
"rxcui",
"covered",
"tier",
"prior_authorization",
"step_therapy",
"quantity_limit",
"negotiated_drug",
"terms_vary_by_ndc"
],
"properties": {
"tier": {
"type": "integer",
"maximum": 9007199254740991,
"minimum": -9007199254740991
},
"rxcui": {
"type": "string"
},
"covered": {
"type": "boolean",
"const": true
},
"step_therapy": {
"type": "boolean"
},
"quantity_limit": {
"anyOf": [
{
"type": "object"
},
{
"type": "null"
}
]
},
"negotiated_drug": {
"type": "boolean"
},
"terms_vary_by_ndc": {
"type": "boolean"
},
"prior_authorization": {
"type": "boolean"
}
},
"additionalProperties": false
},
{
"type": "object",
"required": [
"rxcui",
"covered"
],
"properties": {
"rxcui": {
"type": "string"
},
"covered": {
"type": "boolean",
"const": false
}
},
"additionalProperties": false
}
]
},
{
"type": "null"
}
]
},
"kind": {
"type": "string"
},
"plan": {
"type": "string"
},
"tiers": {
"type": "array",
"items": {
"type": "object",
"required": [
"tier",
"specialty",
"deductible_applies",
"preferred_retail",
"standard_retail",
"preferred_mail",
"standard_mail"
],
"properties": {
"tier": {
"type": "integer",
"maximum": 9007199254740991,
"minimum": -9007199254740991
},
"specialty": {
"type": "boolean"
},
"standard_mail": {
"type": "object"
},
"preferred_mail": {
"type": "object"
},
"standard_retail": {
"type": "object"
},
"preferred_retail": {
"type": "object"
},
"deductible_applies": {
"type": "boolean"
}
},
"additionalProperties": false
}
},
"premium": {
"type": [
"string",
"null"
]
},
"file_date": {
"type": "string"
},
"plan_name": {
"type": "string"
},
"plan_year": {
"type": "integer",
"maximum": 9007199254740991,
"minimum": -9007199254740991
},
"deductible": {
"type": [
"string",
"null"
]
},
"formulary_id": {
"type": "string"
},
"service_area": {
"type": "object",
"required": [
"counties",
"ma_regions",
"pdp_regions"
],
"properties": {
"counties": {
"type": "integer",
"maximum": 9007199254740991,
"minimum": -9007199254740991
},
"ma_regions": {
"type": "array"
},
"pdp_regions": {
"type": "array"
}
},
"additionalProperties": false
},
"contract_name": {
"type": "string"
}
},
"additionalProperties": false
}
}
}
}
}
}
}
}
}Provenance
- Seen in the source catalog
- 2026-10-23 04:28Z
- Last indexed by Roundhouse
- 2026-10-27 13:00Z
- Last enriched (probe, favicon, geo)
- 2026-10-22 22:45Z
- x402 version
- 2
- Max timeout
- 300s
- Liveness probe
- HTTP 402
Hand this page to an agent
Copy the prompt and paste it into Claude, an MCP client or your own agent — it will vet this service and call it over the free read API. No key, no account.
GET api.roundhouseai.io/v0/endpoints
This endpoint's own trailing-30-day call count, as published by the upstream catalog and snapshotted daily. 5 snapshots so far. Verified volume counts only settlements with an on-chain EIP-3009 marker.
Show the promptHide the prompt
Using Roundhouse, look up the x402 service data.spencermcw.com and tell me whether it is worth paying: what a call costs, whether the endpoint answered when last probed, and what its payment record actually shows. curl -s 'https://api.roundhouseai.io/v0/endpoints?q=data.spencermcw.com' curl -s 'https://api.roundhouseai.io/v0/merchants/<the payTo wallet returned above>' Then call it: read the price from the live 402 at https://data.spencermcw.com/v1/medicare/partd/plan, never from a cached figure, and pay with an x402 client. The /v0 API needs an API key (`authorization: Bearer rh_live_…`) on everything except /v0/unified* and /v0/endpoints. Either pay over x402 (mint a personal key for $0.01 at GET https://api.roundhouseai.io/v0/test/x402), or ask me for an organization key, which I create at https://roundhouseai.io/dashboard/connections. If you have neither, ask before going further. If you do not have Roundhouse tools or skills installed, read https://roundhouseai.io/skill.md first — it is the whole procedure.