Savings & investment plan
Savings or investment plan with monthly contributions and compound interest: final value, total contributed, interest earned, value in today's money after inflation, yearly evolution and the monthly amount needed to reach a goal.
DataLiveeip155:8453Exactvia cdp
SavingsCompound-interestRetirementFinanceCalculator
Calls · 30d
5↑ 48%
This endpoint's own trailing-30-day call count, as published by the upstream catalog and snapshotted daily. 32 snapshots so far.
$13.51
Verified settled volume
3,580 settlements proven x402 by their on-chain EIP-3009 marker.
$0.0030
Listed price
As published in the catalog. Always read the live 402 before paying.
5
Calls · 30d
Upstream's own call count for this endpoint, not ours.
4
Unique payers · 30d
Last called 2026-10-20 22:51Z
—
Upstream on-chain volume
Reported by the source catalog.
Paid to
0xb9f06D2734B7E9D7b21B64C4D8b95bd774b71aCfThe 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.
Accepts
The payment requirements as published to the catalog. Read the live 402 before paying — a price here is a claim, not a quote.
0.003USDC≈ $0.003 USD
on Base · exact scheme
Pay 0.003 USDC on Base to 0xb9f0…71aCf. The signed payment is good for 5 minutes.
- Paid to
- 0xb9f0…71aCf
- USD Coin contract
- 0x8335…02913
- Payment window
- 5 minutes
- As published
- 3000 smallest units
3000units
on solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp · exact scheme
That figure is in the token’s smallest units. Roundhouse does not hold this contract’s decimals, so it is shown as published rather than converted.
- Paid to
- HcjfmZ…t3pz2
- Token contract
- EPjFWd…TDt1v
- Payment window
- 5 minutes
3000units
on Polygon · exact scheme
That figure is in the token’s smallest units. Roundhouse does not hold this contract’s decimals, so it is shown as published rather than converted.
- Paid to
- 0xb9f0…71aCf
- Token contract
- 0x3c49…c3359
- Payment window
- 5 minutes
3000units
on Optimism · exact scheme
That figure is in the token’s smallest units. Roundhouse does not hold this contract’s decimals, so it is shown as published rather than converted.
- Paid to
- 0xb9f0…71aCf
- Token contract
- 0x0b2C…7Ff85
- Payment window
- 168 hours
3000units
on eip155:5042 · exact scheme
That figure is in the token’s smallest units. Roundhouse does not hold this contract’s decimals, so it is shown as published rather than converted.
- Paid to
- 0xb9f0…71aCf
- Token contract
- 0x3600…00000
- Payment window
- 168 hours
0.003units
on xrpl:0 · exact scheme
That figure is in the token’s smallest units. Roundhouse does not hold this contract’s decimals, so it is shown as published rather than converted.
- Paid to
- rEac5r…2pNCp
- Token contract
- 524C55…00000
- Payment window
- 5 minutes
2310units
on xrpl:0 · exact scheme
That figure is in the token’s smallest units. Roundhouse does not hold this contract’s decimals, so it is shown as published rather than converted.
- Paid to
- rEac5r…2pNCp
- Token contract
- XRP
- Payment window
- 5 minutes
The catalog’s raw entry
[
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0xb9f06D2734B7E9D7b21B64C4D8b95bd774b71aCf",
"amount": "3000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 300
},
{
"asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
"extra": {
"feePayer": "GVJJ7rdGiXr5xaYbRwRbjfaJL7fmwRygFi1H6aGqDveb"
},
"payTo": "HcjfmZLgWRZzwj4deEiS7pewc4KBYSw39mW5nTyt3pz2",
"amount": "3000",
"scheme": "exact",
"network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"maxTimeoutSeconds": 300
},
{
"asset": "0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0xb9f06D2734B7E9D7b21B64C4D8b95bd774b71aCf",
"amount": "3000",
"scheme": "exact",
"network": "eip155:137",
"maxTimeoutSeconds": 300
},
{
"asset": "0x0b2C639c533813f4Aa9D7837CAf62653d097Ff85",
"extra": {
"name": "GatewayWalletBatched",
"assets": [
{
"symbol": "USDC",
"address": "0x0b2c639c533813f4aa9d7837caf62653d097ff85",
"decimals": 6,
"authorizationVersions": [
"1",
"2"
]
}
],
"version": "1",
"verifyingContract": "0x77777777dcc4d5a8b6e418fd04d8997ef11000ee",
"minValiditySeconds": 604800
},
"payTo": "0xb9f06D2734B7E9D7b21B64C4D8b95bd774b71aCf",
"amount": "3000",
"scheme": "exact",
"network": "eip155:10",
"maxTimeoutSeconds": 604900
},
{
"asset": "0x3600000000000000000000000000000000000000",
"extra": {
"name": "GatewayWalletBatched",
"assets": [
{
"symbol": "USDC",
"address": "0x3600000000000000000000000000000000000000",
"decimals": 6,
"authorizationVersions": [
"1",
"2"
]
}
],
"version": "1",
"verifyingContract": "0x77777777dcc4d5a8b6e418fd04d8997ef11000ee",
"minValiditySeconds": 604800
},
"payTo": "0xb9f06D2734B7E9D7b21B64C4D8b95bd774b71aCf",
"amount": "3000",
"scheme": "exact",
"network": "eip155:5042",
"maxTimeoutSeconds": 604900
},
{
"asset": "524C555344000000000000000000000000000000",
"extra": {
"issuer": "rMxCKbEDwqr76QuheSUMdEGf4B9xJ8m5De",
"invoiceId": "C175268BF3724AF88DADCC10784C5511",
"sourceTag": 804681468,
"areFeesSponsored": false
},
"payTo": "rEac5rTEr7y81iEyrMTrHCRbnktSE2pNCp",
"amount": "0.003",
"scheme": "exact",
"network": "xrpl:0",
"maxTimeoutSeconds": 300
},
{
"asset": "XRP",
"extra": {
"invoiceId": "5F69796620F04743B7F0906C755180DB",
"sourceTag": 804681468,
"areFeesSponsored": false
},
"payTo": "rEac5rTEr7y81iEyrMTrHCRbnktSE2pNCp",
"amount": "2310",
"scheme": "exact",
"network": "xrpl:0",
"maxTimeoutSeconds": 300
}
]Extensions
{
"bazaar": {
"info": {
"input": {
"body": {
"anios": 20,
"objetivo": 100000,
"inflacion_pct": 2,
"capital_inicial": 1000,
"aportacion_mensual": 200,
"rentabilidad_anual_pct": 6
},
"type": "http",
"method": "POST",
"bodyType": "json"
},
"output": {
"type": "json",
"example": {
"nota": "Rentabilidad constante supuesta; los mercados reales varían. Sin impuestos ni comisiones.",
"evolucion": [
{
"anio": 1,
"valor": 3525.31,
"aportado": 3400
},
{
"anio": 2,
"valor": 6202.13,
"aportado": 5800
},
{
"anio": 3,
"valor": 9039.56,
"aportado": 8200
},
{
"anio": 4,
"valor": 12047.24,
"aportado": 10600
},
{
"anio": 5,
"valor": 15235.38,
"aportado": 13000
},
{
"anio": 6,
"valor": 18614.81,
"aportado": 15400
},
{
"anio": 7,
"valor": 22197.01,
"aportado": 17800
},
{
"anio": 8,
"valor": 25994.13,
"aportado": 20200
},
{
"anio": 9,
"valor": 30019.09,
"aportado": 22600
},
{
"anio": 10,
"valor": 34285.54,
"aportado": 25000
},
{
"anio": 11,
"valor": 38807.97,
"aportado": 27400
},
{
"anio": 12,
"valor": 43601.76,
"aportado": 29800
},
{
"anio": 13,
"valor": 48683.17,
"aportado": 32200
},
{
"anio": 14,
"valor": 54069.47,
"aportado": 34600
},
{
"anio": 15,
"valor": 59778.94,
"aportado": 37000
},
{
"anio": 16,
"valor": 65830.98,
"aportado": 39400
},
{
"anio": 17,
"valor": 72246.15,
"aportado": 41800
},
{
"anio": 18,
"valor": 79046.22,
"aportado": 44200
},
{
"anio": 19,
"valor": 86254.3,
"aportado": 46600
},
{
"anio": 20,
"valor": 93894.86,
"aportado": 49000
}
],
"intereses": 44894.86,
"valor_final": 93894.86,
"para_objetivo": {
"objetivo": 100000,
"aportacion_mensual_necesaria": 213.46
},
"total_aportado": 49000,
"valor_final_en_dinero_de_hoy": 63188.55
}
}
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"input"
],
"properties": {
"input": {
"type": "object",
"required": [
"type",
"method",
"bodyType",
"body"
],
"properties": {
"body": {
"required": [
"aportacion_mensual",
"anios",
"rentabilidad_anual_pct"
],
"properties": {
"anios": {
"type": "number"
},
"objetivo": {
"type": "number"
},
"inflacion_pct": {
"type": "number"
},
"capital_inicial": {
"type": "number"
},
"aportacion_mensual": {
"type": "number"
},
"rentabilidad_anual_pct": {
"type": "number"
}
}
},
"type": {
"type": "string",
"const": "http"
},
"method": {
"enum": [
"POST"
],
"type": "string"
},
"bodyType": {
"enum": [
"json",
"form-data",
"text"
],
"type": "string"
}
},
"additionalProperties": false
},
"output": {
"type": "object",
"required": [
"type"
],
"properties": {
"type": {
"type": "string"
},
"example": {
"type": [
"object",
"null"
],
"properties": {
"nota": {
"type": [
"string",
"null"
]
},
"evolucion": {
"type": [
"array",
"null"
],
"items": {
"type": [
"null",
"object"
],
"properties": {
"anio": {
"type": [
"null",
"number"
]
},
"valor": {
"type": [
"null",
"number"
]
},
"aportado": {
"type": [
"null",
"number"
]
}
}
}
},
"intereses": {
"type": [
"number",
"null"
]
},
"valor_final": {
"type": [
"number",
"null"
]
},
"para_objetivo": {
"type": [
"object",
"null"
],
"properties": {
"objetivo": {
"type": [
"number",
"null"
]
},
"aportacion_mensual_necesaria": {
"type": [
"number",
"null"
]
}
}
},
"total_aportado": {
"type": [
"number",
"null"
]
},
"valor_final_en_dinero_de_hoy": {
"type": [
"number",
"null"
]
}
}
}
}
}
}
}
}
}Provenance
- Seen in the source catalog
- 2026-10-20 22:51Z
- Last indexed by Roundhouse
- 2026-10-26 22:40Z
- Last enriched (probe, favicon, geo)
- 2026-10-02 17:15Z
- x402 version
- 2
- Max timeout
- 300s
- Liveness probe
- HTTP 200
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. 32 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 Savings & investment plan 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=Savings%20%26%20investment%20plan' 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://api.vextorium.com/plan-ahorro-pago, 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.