Detect economically material changes to SAM
Detect economically material changes to SAM.gov federal contract opportunities, including deadline moves, solicitation amendments, attachment changes, set-aside, NAICS, status, and award changes. Returns an immutable before/after delta with materiality, reason codes, and provenance for procurement and capture agents.
10000 (raw units)
price
3
calls / 30d
1
unique payers
2026-09-17
updated
Provider
myc-staging.crescadia.com · discovered, not yet claimed by its owner
Payment (x402 accepts[])
[
{
"scheme": "exact",
"network": "eip155:8453",
"payTo": "0xc54cAF5be3660c0558700B7a64103904eC9c861C",
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"amount": "10000",
"maxTimeoutSeconds": 300
}
]Output schema
{
"bazaar": {
"info": {
"input": {
"method": "GET",
"pathParams": {
"product_event_id": "product_5b0221871e05ed90476245bc0d55484f"
},
"type": "http"
},
"output": {
"example": {
"changed": true,
"confidence": 1,
"event_count": 1,
"events": [
{
"current": [
"https://sam.gov/example/attachment-v2"
],
"event": "attachments_changed",
"field": "resource_links",
"materiality": 0.85,
"previous": [
"https://sam.gov/example/attachment-v1"
],
"reason": "Attachment/resource changes may alter requirements."
}
],
"material_changed": true,
"material_event_count": 1,
"notice_id": "example-notice-id",
"product": {
"event_digest": "example",
"price": {
"amount": "0.01",
"currency": "USD"
},
"product_event_id": "product_example",
"product_id": "federal_opportunity.delta",
"product_version": "1"
},
"provenance": {
"materiality_threshold": 0.65,
"source": "SAM.gov"
},
"source": "SAM.gov"
},
"type": "json"
}
},
"routeTemplate": "/v1/paid/products/:product_event_id",
"schema": {
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"method": {
"enum": [
"GET",
"HEAD",
"DELETE"
],
"type": "string"
},
"pathParams": {
"properties": {
"product_event_id": {
"description": "Immutable MYC priced product event identifier.",
"type": "string"
}
},
"required": [
"product_event_id"
],
"type": "object"
},
"queryParams": {
"properties": {},
"type": "object"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method"
],
"type": "object"
},
"output": {
"properties": {
"example": {
"properties": {
"changed": {
"type": "boolean"
},
"confidence": {
"type": "number"
},
"event_count": {
"type": "integer"
},
"events": {
"items": {
"properties": {
"current": {},
"event": {
"type": "string"
},
"field": {
"type": "string"
},
"materiality": {
"type": "number"
},
"previous": {},
"reason": {
"type": "string"
}
},
"required": [
"field",
"event",
"materiality",
"reason"
],
"type": "object"
},
"type": "array"
},
"material_changed": {
"type": "boolean"
},
"material_event_count": {
"type": "integer"
},
"notice_id": {
"type": "string"
},
"product": {
"properties": {
"event_digest": {
"type": "string"
},
"price": {
"properties": {
"amount": {
"type": "string"
},
"currency": {
"type": "string"
}
},
"required": [
"amount",
"currency"
],
"type": "object"
},
"product_event_id": {
"type": "string"
},
"product_id": {
"type": "string"
},
"product_version": {
"type": "string"
}
},
"required": [
"product_event_id",
"product_id",
"product_version",
"event_digest",
"price"
],
"type": "object"
},
"provenance": {
"type": "object"
},
"source": {
"type": "string"
}
},
"required": [
"notice_id",
"changed",
"material_changed",
"event_count",
"material_event_count",
"events",
"source",
"confidence",
"provenance",
"product"
],
"type": "object"
},
"type": {
"type": "string"
}
},
"required": [
"type"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}
}
}Use it
curl
curl "https://myc-staging.crescadia.com/v1/paid/products/:product_event_id" # -> 402 Payment Required, accepts[] lists how to pay # retry with a PAYMENT-SIGNATURE (or PAYMENT header) once paid
JavaScript
const res = await fetch("https://myc-staging.crescadia.com/v1/paid/products/:product_event_id");
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://myc-staging.crescadia.com/v1/paid/products/:product_event_id")
if res.status_code == 402:
accepts = res.json()["accepts"]
# pay one of accepts[] via an x402 client, then retry with the payment headerMachine-readable
Everything on this page is also available as clean JSON at /resources/7391.json, and this resource appears in /discovery/resources and /discovery/search.