Roundhouse AI

phion.systems

Atomically reserve cumulative mandate capacity and return signed state

OtherLiveeip155:8453Exactvia cdp
https://phion.systems/v1/paid/mandates/reserve
Calls · 30d
1
This endpoint's own trailing-30-day call count, as published by the upstream catalog and snapshotted daily. 13 snapshots so far.
$0.77
Verified settled volume
191 settlements proven x402 by their on-chain EIP-3009 marker.
$0.0040
Listed price
As published in the catalog. Always read the live 402 before paying.
1
Calls · 30d
Upstream's own call count for this endpoint, not ours.
1
Unique payers · 30d
Last called 2026-09-11 18:05Z
—
Upstream on-chain volume
Reported by the source catalog.
Paid to
0x7BEcA68DD9aC733D4de6b16d16B85Dc391c071e2

The 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.

Live 402 challenge

Captured by the enrichment pass, not read just now. Prices can change — always read the 402 the endpoint answers with.

{
  "accepts": [
    {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "version": "2"
      },
      "payTo": "0x7BEcA68DD9aC733D4de6b16d16B85Dc391c071e2",
      "amount": "4000",
      "scheme": "exact",
      "network": "eip155:8453",
      "maxTimeoutSeconds": 60
    }
  ],
  "resource": {
    "url": "https://phion.systems/v1/paid/mandates/reserve",
    "mimeType": "application/json",
    "description": "Atomically reserve cumulative mandate capacity and return signed state"
  },
  "extensions": {
    "bazaar": {
      "info": {
        "input": {
          "body": {
            "amount": "4000",
            "mandate_id": "weekly-budget",
            "ttl_seconds": 300,
            "idempotency_key": "purchase-1",
            "capability_token": "32-or-more-secret-characters-here",
            "cumulative_limit": "100000"
          },
          "type": "http",
          "method": "POST",
          "bodyType": "json",
          "discoverable": true
        },
        "output": {
          "type": "json",
          "example": {
            "receipt": {
              "signature": "base64url"
            },
            "reservation": {
              "status": "reserved",
              "remaining": "96000"
            }
          }
        },
        "inputSchema": {
          "type": "object",
          "required": [
            "mandate_id",
            "idempotency_key",
            "capability_token",
            "amount",
            "cumulative_limit"
          ]
        }
      },
      "schema": {
        "type": "object",
        "$schema": "https://json-schema.org/draft/2020-12/schema"
      }
    }
  },
  "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.

0.004USDC≈ $0.004 USD
on Base · exact scheme

Pay 0.004 USDC on Base to 0x7BEc…071e2. The signed payment is good for 1 minute.

Paid to
0x7BEc…071e2
USD Coin contract
0x8335…02913
Payment window
1 minute
As published
4000 smallest units
The catalog’s raw entry
[
  {
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "extra": {
      "name": "USD Coin",
      "version": "2"
    },
    "payTo": "0x7BEcA68DD9aC733D4de6b16d16B85Dc391c071e2",
    "amount": "4000",
    "scheme": "exact",
    "network": "eip155:8453",
    "maxTimeoutSeconds": 60
  }
]

Extensions

{
  "bazaar": {
    "info": {
      "input": {
        "body": {
          "amount": "4000",
          "mandate_id": "weekly-budget",
          "ttl_seconds": 300,
          "idempotency_key": "purchase-1",
          "capability_token": "32-or-more-secret-characters-here",
          "cumulative_limit": "100000"
        },
        "type": "http",
        "method": "POST",
        "bodyType": "json",
        "discoverable": true
      },
      "output": {
        "type": "json",
        "example": {
          "receipt": {
            "signature": "base64url"
          },
          "reservation": {
            "status": "reserved",
            "remaining": "96000"
          }
        }
      },
      "inputSchema": {
        "type": "object",
        "required": [
          "mandate_id",
          "idempotency_key",
          "capability_token",
          "amount",
          "cumulative_limit"
        ]
      }
    },
    "schema": {
      "type": "object",
      "$schema": "https://json-schema.org/draft/2020-12/schema"
    }
  }
}

Provenance

Seen in the source catalog
2026-09-11 18:05Z
Last indexed by Roundhouse
2026-09-24 23:20Z
Last enriched (probe, favicon, geo)
2026-09-11 18:16Z
x402 version
2
Max timeout
60s
Liveness probe
HTTP 402
Report

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. 13 snapshots so far. Verified volume counts only settlements with an on-chain EIP-3009 marker.

Open skill.md
Show the prompt
Using Roundhouse, look up the x402 service phion.systems 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=phion.systems'
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://phion.systems/v1/paid/mandates/reserve, 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. Mint a personal key for $0.01 at GET https://api.roundhouseai.io/v0/test/x402,
or use an organization key from https://roundhouseai.io/dashboard/team.

If you do not have Roundhouse tools or skills installed, read
https://roundhouseai.io/skill.md first — it is the whole procedure.