Utilities · x402 · early usage

Latest Brazil Selic policy target interest rate from Banco Central do Brasil SGS 432, i…

Latest Brazil Selic policy target interest rate from Banco Central do Brasil SGS 432, in percent per annum, for monetary policy and borrowing-cost analysis.

by brazil-macro.use.x402atlas.com · discovered, not yet claimed by its owner · updated 2026-10-10

30d calls2

30d payers2

MethodGET

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

Latest Brazil Selic policy target interest rate from Banco Central do Brasil SGS 432, in percent per annum, for monetary policy and borrowing-cost analysis.

Tags: brazil · selic · interest-rates · monetary-policy · policy-rates · bazaar

Call contract

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

No input exampleProvider did not publish one in Bazaar metadata.

Output example

{
  "changes": "Selected series; dates normalized to ISO days or months; decimal strings parsed as numbers; observations sorted ascending; original numeric values unchanged; no interpolation or derived inflation calculations.",
  "method_url": "https://brazil-macro.use.x402atlas.com/data-method",
  "notice": "Source: Banco Central do Brasil SGS; Selic target by Copom, IPCA by IBGE. Selic database is available under ODbL 1.0; IPCA reproduction follows BCB terms with source attribution and information integrity. No affiliation or endorsement. Source data is free; the fee is for API integration, not exclusive data rights.",
  "operation": "latest",
  "retrieved_at": "2024-04-15T12:00:00Z",
  "schema_version": "1",
  "series": [
    {
      "alias": "selic",
      "attribution": "Banco Central do Brasil / Copom",
      "frequency": "daily",
      "license_url": "https://opendatacommons.org/licenses/odbl/1-0/",
      "name": "Selic policy target",
      "observations": [
        {
          "period": "2024-01-05",
          "value": 11.75
        }
      ],
      "source_id": "432",
      "unit": "percent_per_annum"
    }
  ],
  "source": "Banco Central do Brasil SGS",
  "source_request_url": "https://api.bcb.gov.br/dados/serie/bcdata.sgs.432/dados/ultimos/1?formato=json",
  "source_url": "https://www.bcb.gov.br/estatisticas",
  "warnings": [
    "Source supplies no publication timestamp or revision flag; observations may be revised. Retrieval time is not observation freshness."
  ]
}

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/36395.json for the price and payment options.
Pay. Call GET https://brazil-macro.use.x402atlas.com/selic/latest. 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, Polygon, Arbitrum One, Solana, and an x402-capable client (see the examples below). Call the endpoint unpaid first to see exactly what it asks for.

Pricing & payment

Price: $0.01 / request
Protocol: x402 v2
Auth: No account or API key. Pay per request.
Networks: Base, Polygon, Arbitrum One, Solana
Demand: 2 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	$0.01	0x8C128f1Ee62Bb5e47867CfbAe2ad89be325Df1b2	300s
exact	Polygon eip155:137	USDC	$0.01	0x8C128f1Ee62Bb5e47867CfbAe2ad89be325Df1b2	300s
exact	Arbitrum One eip155:42161	USDC	$0.01	0x8C128f1Ee62Bb5e47867CfbAe2ad89be325Df1b2	300s
exact	Solana solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp	USDC	$0.01	ASt6xvRyQ7ntERsmcYVMdLqZvz1GEN8Fzexzq62tXrNQ	300s

accepts[] (raw JSON)

[
  {
    "scheme": "exact",
    "network": "eip155:8453",
    "payTo": "0x8C128f1Ee62Bb5e47867CfbAe2ad89be325Df1b2",
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "amount": "10000",
    "amountUsd": 0.01,
    "maxTimeoutSeconds": 300
  },
  {
    "scheme": "exact",
    "network": "eip155:137",
    "payTo": "0x8C128f1Ee62Bb5e47867CfbAe2ad89be325Df1b2",
    "asset": "0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359",
    "amount": "10000",
    "amountUsd": 0.01,
    "maxTimeoutSeconds": 300
  },
  {
    "scheme": "exact",
    "network": "eip155:42161",
    "payTo": "0x8C128f1Ee62Bb5e47867CfbAe2ad89be325Df1b2",
    "asset": "0xaf88d065e77c8cC2239327C5EDb3A432268e5831",
    "amount": "10000",
    "amountUsd": 0.01,
    "maxTimeoutSeconds": 300
  },
  {
    "scheme": "exact",
    "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
    "payTo": "ASt6xvRyQ7ntERsmcYVMdLqZvz1GEN8Fzexzq62tXrNQ",
    "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
    "amount": "10000",
    "amountUsd": 0.01,
    "maxTimeoutSeconds": 300
  }
]

Schemas

Output schema (JSON Schema)

{
  "properties": {
    "example": {
      "additionalProperties": false,
      "properties": {
        "changes": {
          "description": "Transformations applied without changing numeric values.",
          "type": "string"
        },
        "method_url": {
          "description": "Free machine-readable alteration method and license notices.",
          "enum": [
            "https://brazil-macro.use.x402atlas.com/data-method"
          ],
          "type": "string"
        },
        "notice": {
          "description": "Attribution, reuse conditions and integration fee notice.",
          "type": "string"
        },
        "operation": {
          "description": "Endpoint operation.",
          "enum": [
            "latest"
          ],
          "type": "string"
        },
        "retrieved_at": {
          "description": "UTC retrieval time; unchanged on source cache hits; not observation freshness.",
          "format": "date-time",
          "type": "string"
        },
        "schema_version": {
          "description": "Normalized contract version.",
          "enum": [
            "1"
          ],
          "type": "string"
        },
        "series": {
          "description": "One fixed economic indicator.",
          "items": {
            "additionalProperties": false,
            "properties": {
              "alias": {
                "description": "Fixed endpoint series.",
                "enum": [
                  "selic"
                ],
                "type": "string"
              },
              "attribution": {
                "description": "Original producer and distributor.",
                "enum": [
                  "Banco Central do Brasil / Copom"
                ],
                "type": "string"
              },
              "frequency": {
                "description": "Observation frequency; gaps are not filled.",
                "enum": [
                  "daily"
                ],
                "type": "string"
              },
              "license_url": {
                "description": "Applicable source reuse license or terms.",
                "enum": [
                  "https://opendatacommons.org/licenses/odbl/1-0/"
                ],
                "type": "string"
              },
              "name": {
                "description": "Indicator name.",
                "enum": [
                  "Selic policy target"
                ],
                "type": "string"
              },
              "observations": {
                "description": "Ascending observed periods, without interpolation.",
                "items": {
                  "additionalProperties": false,
                  "properties": {
                    "period": {
                      "description": "Source observation day for Selic or reference month for IPCA, not publication time.",
                      "pattern": "^[0-9]{4}-[0-9]{2}-[0-9]{2}$",
                      "type": "string"
                    },
                    "value": {
                      "description": "Source percentage, unchanged; 1 means one percent. See series unit.",
                      "maximum": 1000,
                      "minimum": -100,
                      "type": "number"
                    }
                  },
                  "required": [
                    "period",
                    "value"
                  ],
                  "type": "object"
                },
                "maxItems": 1,
                "minItems": 1,
                "type": "array"
              },
              "source_id": {
                "description": "BCB SGS identifier.",
                "enum": [
                  "432"
                ],
                "type": "string"
              },
              "unit": {
                "description": "Selic annual percentage or IPCA monthly percentage change.",
                "enum": [
                  "percent_per_annum"
                ],
                "type": "string"
              }
            },
            "required": [
              "alias",
              "source_id",
              "name",
              "frequency",
              "unit",
              "attribution",
              "license_url",
              "observations"
            ],
            "type": "object"
          },
          "maxItems": 1,
          "minItems": 1,
          "type": "array"
        },
        "source": {
          "description": "Source attribution.",
          "enum": [
            "Banco Central do Brasil SGS"
          ],
          "type": "string"
        },
        "source_request_url": {
          "description": "Exact free source request for this selection.",
          "type": "string"
        },
        "source_url": {
          "description": "Official source website.",
          "type": "string"
        },
        "warnings": {
          "description": "Limits of source revision and publication metadata.",
          "items": {
            "description": "Data interpretation warning.",
            "type": "string"
          },
          "maxItems": 1,
          "minItems": 1,
          "type": "array"
        }
      },
      "required": [
        "operation",
        "schema_version",
        "source",
        "source_url",
        "source_request_url",
        "notice",
        "changes",
        "method_url",
        "retrieved_at",
        "series",
        "warnings"
      ],
      "type": "object"
    },
    "type": {
      "type": "string"
    }
  },
  "required": [
    "type"
  ],
  "type": "object"
}

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

{
  "example": {
    "changes": "string",
    "method_url": "https://brazil-macro.use.x402atlas.com/data-method",
    "notice": "string",
    "operation": "latest",
    "retrieved_at": "2026-01-01T00:00:00Z",
    "schema_version": "1",
    "series": [
      {
        "alias": "selic",
        "attribution": "Banco Central do Brasil / Copom",
        "frequency": "daily",
        "license_url": "https://opendatacommons.org/licenses/odbl/1-0/",
        "name": "Selic policy target",
        "observations": [
          {
            "period": "string",
            "value": 0
          }
        ],
        "source_id": "432",
        "unit": "percent_per_annum"
      }
    ],
    "source": "Banco Central do Brasil SGS",
    "source_request_url": "string",
    "source_url": "string",
    "warnings": [
      "string"
    ]
  },
  "type": "string"
}

Examples

curl

curl "https://brazil-macro.use.x402atlas.com/selic/latest"
# -> 402 Payment Required, accepts[] lists how to pay
# retry with a PAYMENT-SIGNATURE (or PAYMENT header) once paid

JavaScript

const res = await fetch("https://brazil-macro.use.x402atlas.com/selic/latest");
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://brazil-macro.use.x402atlas.com/selic/latest")
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: brazil-macro.use.x402atlas.com
Endpoint: https://brazil-macro.use.x402atlas.com/selic/latest
Machine-readable: /resources/36395.json