US National Debt — daily "Debt to the Penny" via US Treasury Fiscal Data. Each row carries record_date, debt held by public, intragovernmental holdings, and total public debt outstanding (all USD, signed integers as strings to preserve precision). Optional `filter` uses Fiscal Data syntax: `col:op:val` joined by commas (ops: eq, lt, lte, gt, gte, in). Default sort is `-record_date` (newest first). Authoritative source for "how much does the US owe?" — every weekday since 1993.
/api/treasury/debtPAYMENT-SIGNATURE.The debt API is a pay-per-call treasury endpoint built for AI agents and autonomous software. US National Debt — daily "Debt to the Penny" via US Treasury Fiscal Data.
There is no signup and no API key. An agent (or any HTTP client) hits the endpoint, receives an x402 "402 Payment Required" challenge, signs a sub-cent USDC payment on Base or Solana, and retries — the data comes back on the paid request. That makes it a drop-in debt data source for an agent tool-use loop, an MCP host, or a backend that needs treasury data on demand without onboarding to yet another vendor portal.
| Name | Type | Description |
|---|---|---|
fields | string | max 400 chars · match ^[a-z][a-z0-9_]*(,[a-z][a-z0-9_]*)*$ |
filter | string | max 800 chars · match ^[a-z][a-z0-9_]*:(eq|ne|lt|lte|gt|gte|in):[A-Za-z0-9._:\-+/, ]+(,[a-z][a-z0-9_]*:(eq|ne|lt|lte|gt|gte|in):[A-Za-z0-9._:\-+/, ]+)*$ |
sort | string | max 200 chars · match ^-?[a-z][a-z0-9_]*(,-?[a-z][a-z0-9_]*)*$ |
pageSize | integer | min 1 · max 10000 |
pageNumber | integer | min 1 |
# 1. Probe with no auth → 402 envelope with PaymentRequirements curl -sS 'https://2s.io/api/treasury/debt?fields=example&filter=example&sort=example&pageSize=100&pageNumber=1' # 2. Sign + retry with PAYMENT-SIGNATURE: curl -sS 'https://2s.io/api/treasury/debt?fields=example&filter=example&sort=example&pageSize=100&pageNumber=1' \ -H 'PAYMENT-SIGNATURE: <base64-json-payload>' # Or use the canonical runner (handles probe → sign → retry): # EVM_PRIVATE_KEY=0x... node --env-file=.env.local \ # --experimental-strip-types scripts/x402-pay.ts \ # 'https://2s.io/api/treasury/debt?fields=example&filter=example&sort=example&pageSize=100&pageNumber=1'
import { TwoS } from '@2sio/sdk'
const client = new TwoS({
privateKey: process.env.EVM_PRIVATE_KEY as `0x${string}`,
})
const result = await client.treasury.debt({
"fields": "example",
"filter": "example",
"sort": "example",
"pageSize": 100,
"pageNumber": 1
})
console.log('endpoint:', result.endpoint)
console.log('cost:', result.costUsd, 'USDC')
console.log('tx:', result.settlement?.txHash)
console.log('data:', result.data)import os
from twosio import TwoS
client = TwoS(private_key=os.environ["EVM_PRIVATE_KEY"])
result = client.treasury.debt(fields="example", filter="example", sort="example", pageSize=100, pageNumber=1)
print("endpoint:", result.endpoint)
print("cost:", result.cost_usd, "USDC")
print("tx:", (result.settlement or {}).get("tx_hash"))
print("data:", result.data)// 1. Add @2sio/mcp to your MCP host config (Claude Desktop example below).
// EVM_PRIVATE_KEY funds x402 payments per call.
// claude_desktop_config.json
{
"mcpServers": {
"2sio": {
"command": "npx",
"args": ["-y", "@2sio/mcp"],
"env": { "EVM_PRIVATE_KEY": "0x..." }
}
}
}
// 2. Once the server is running, agents call this tool via standard MCP:
{
"jsonrpc": "2.0",
"id": 1,
"method": "tools/call",
"params": {
"name": "treasury.debt",
"arguments": {
"fields": "example",
"filter": "example",
"sort": "example",
"pageSize": 100,
"pageNumber": 1
}
}
}| Field | Type | Description |
|---|---|---|
ok | boolean | one of: true |
items | array | |
total | integer | Total matching rows upstream; null when unknown. |
source | object | |
page | object | |
meta | object |
{
"ok": true,
"items": [
{}
],
"total": 1,
"source": {
"provider": "example",
"url": "example",
"license": "example"
},
"page": {
"number": 1,
"size": 1,
"pages": 1
},
"meta": {}
}