Vextorium
Posts with the most engagement right now on a Mastodon instance, with author, text, favourites, boosts and replies.
The wallet the 402 directs payment to. Its whole payment record — every payer, every chain — is on the merchant page.
Asset 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913
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": "0xb9f06D2734B7E9D7b21B64C4D8b95bd774b71aCf",
"amount": "3000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 300
},
{
"asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
"extra": {
"feePayer": "4ZHcGaij9ktYqm9dNvMSMLsbT5D7BUrXDEzQGVH5h3Q6"
},
"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",
"areFeesSponsored": false
},
"payTo": "rEac5rTEr7y81iEyrMTrHCRbnktSE2pNCp",
"amount": "0.003",
"scheme": "exact",
"network": "xrpl:0",
"maxTimeoutSeconds": 300
}
],
"message": "Payment required: 0.003 USD per call (USDC on Base, Solana or Polygon, or RLUSD on XRPL) via x402 v2. Send a POST with a JSON body, e.g. {\"instance\":\"mastodon.social\",\"limit\":20}, using any x402 client (e.g. `npx awal x402 pay <url> -X POST -d '<json>'`). The payment terms are in the PAYMENT-REQUIRED header and repeated in this body. Failed requests are not charged. Docs: https://api.vextorium.com/llms.txt",
"resource": {
"url": "https://api.vextorium.com/v1/mastodon-trending-posts",
"tags": [],
"iconUrl": "https://api.vextorium.com/icono.svg",
"mimeType": "application/json",
"description": "Posts with the most engagement right now on a Mastodon instance, with author, text, favourites, boosts and replies.",
"serviceName": "Vextorium"
},
"extensions": {
"bazaar": {
"info": {
"input": {
"body": {
"limit": 20,
"instance": "mastodon.social"
},
"type": "http",
"method": "POST",
"bodyType": "json"
},
"output": {
"type": "json",
"example": {
"count": 20,
"posts": [
{
"url": "https://tech.lgbt/@Natasha_Jay/117432189720716241",
"text": "\"Alien is a movie where nobody listens to the smart woman, and then they all die except for the smart woman and her cat. Four (⭐⭐⭐⭐) stars.\"",
"author": "Natasha_Jay@tech.lgbt",
"boosts": 172,
"replies": 12,
"language": "en",
"created_at": "2026-10-13T06:30:12.000Z",
"favourites": 306,
"author_name": "Nαtαshα :mastodon:"
},
{
"url": "https://mastodon.social/@gutenberg_org/117432401844117791",
"text": "\"The Analytical Engine weaves algebraic patterns just as the Jacquard loom weaves flowers and leaves.\" Let's celebrate, today is Ada Lovelace Day! Ada Lovelace, daughter of Lord Byron, was a pioneering mathematician. Known for creating the first machine algorithm for Babbage's Analytical Engine, she…",
"author": "gutenberg_org",
"boosts": 87,
"replies": 1,
"language": "en",
"created_at": "2026-10-13T07:24:08.844Z",
"favourites": 44,
"author_name": "Project Gutenberg"
}
],
"source": "Mastodon public API (mastodon.social)",
"instance": "mastodon.social"
}
}
},
"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": [],
"properties": {
"limit": {
"type": "integer"
},
"instance": {
"type": "string"
}
}
},
"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": {
"count": {
"type": [
"number",
"null"
]
},
"posts": {
"type": [
"array",
"null"
],
"items": {
"type": [
"null",
"object"
],
"properties": {
"url": {
"type": [
"null",
"string"
]
},
"text": {
"type": [
"null",
"string"
]
},
"author": {
"type": [
"null",
"string"
]
},
"boosts": {
"type": [
"null",
"number"
]
},
"replies": {
"type": [
"null",
"number"
]
},
"language": {
"type": [
"null",
"string"
]
},
"created_at": {
"type": [
"null",
"string"
]
},
"favourites": {
"type": [
"null",
"number"
]
},
"author_name": {
"type": [
"null",
"string"
]
}
}
}
},
"source": {
"type": [
"string",
"null"
]
},
"instance": {
"type": [
"string",
"null"
]
}
}
}
}
}
}
}
}
},
"method_hint": "This endpoint is called with POST; GET only returns these payment terms.",
"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.
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
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
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
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
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
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
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": "4ZHcGaij9ktYqm9dNvMSMLsbT5D7BUrXDEzQGVH5h3Q6"
},
"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": "405E66E191A741A28BB6D0409094691C",
"sourceTag": 804681468,
"areFeesSponsored": false
},
"payTo": "rEac5rTEr7y81iEyrMTrHCRbnktSE2pNCp",
"amount": "0.003",
"scheme": "exact",
"network": "xrpl:0",
"maxTimeoutSeconds": 300
},
{
"asset": "XRP",
"extra": {
"invoiceId": "DDB40CEC96824754A3DF58A14EE6A67F",
"sourceTag": 804681468,
"areFeesSponsored": false
},
"payTo": "rEac5rTEr7y81iEyrMTrHCRbnktSE2pNCp",
"amount": "2260",
"scheme": "exact",
"network": "xrpl:0",
"maxTimeoutSeconds": 300
}
]Extensions
{
"bazaar": {
"info": {
"input": {
"body": {
"limit": 20,
"instance": "mastodon.social"
},
"type": "http",
"method": "POST",
"bodyType": "json"
},
"output": {
"type": "json",
"example": {
"count": 20,
"posts": [
{
"url": "https://tech.lgbt/@Natasha_Jay/117432189720716241",
"text": "\"Alien is a movie where nobody listens to the smart woman, and then they all die except for the smart woman and her cat. Four (⭐⭐⭐⭐) stars.\"",
"author": "Natasha_Jay@tech.lgbt",
"boosts": 172,
"replies": 12,
"language": "en",
"created_at": "2026-10-13T06:30:12.000Z",
"favourites": 306,
"author_name": "Nαtαshα :mastodon:"
},
{
"url": "https://mastodon.social/@gutenberg_org/117432401844117791",
"text": "\"The Analytical Engine weaves algebraic patterns just as the Jacquard loom weaves flowers and leaves.\" Let's celebrate, today is Ada Lovelace Day! Ada Lovelace, daughter of Lord Byron, was a pioneering mathematician. Known for creating the first machine algorithm for Babbage's Analytical Engine, she…",
"author": "gutenberg_org",
"boosts": 87,
"replies": 1,
"language": "en",
"created_at": "2026-10-13T07:24:08.844Z",
"favourites": 44,
"author_name": "Project Gutenberg"
}
],
"source": "Mastodon public API (mastodon.social)",
"instance": "mastodon.social"
}
}
},
"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": [],
"properties": {
"limit": {
"type": "integer"
},
"instance": {
"type": "string"
}
}
},
"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": {
"count": {
"type": [
"number",
"null"
]
},
"posts": {
"type": [
"array",
"null"
],
"items": {
"type": [
"null",
"object"
],
"properties": {
"url": {
"type": [
"null",
"string"
]
},
"text": {
"type": [
"null",
"string"
]
},
"author": {
"type": [
"null",
"string"
]
},
"boosts": {
"type": [
"null",
"number"
]
},
"replies": {
"type": [
"null",
"number"
]
},
"language": {
"type": [
"null",
"string"
]
},
"created_at": {
"type": [
"null",
"string"
]
},
"favourites": {
"type": [
"null",
"number"
]
},
"author_name": {
"type": [
"null",
"string"
]
}
}
}
},
"source": {
"type": [
"string",
"null"
]
},
"instance": {
"type": [
"string",
"null"
]
}
}
}
}
}
}
}
}
}Provenance
- Seen in the source catalog
- 2026-10-15 01:29Z
- Last indexed by Roundhouse
- 2026-10-17 07:40Z
- Last enriched (probe, favicon, geo)
- 2026-10-13 15:16Z
- 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. 6 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 Vextorium 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=Vextorium' 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/v1/mastodon-trending-posts, 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.