Roundhouse AI

natur.halowerk.com

Assembles all names associated with one taxon into a graph with the accepted name at the centre and every synonym, basionym and alternate representation as a node carrying its status, authority and the register that supplied it. Two registers are queried rather than one because their disagreement is the finding: reconciling datasets that span decades regularly turns up names that GBIF treats as a synonym and WoRMS treats as a separate species, or the reverse, and a service that silently follows…

DataLiveeip155:8453Exactvia cdp
https://natur.halowerk.com/v1/synonym-graph
Calls · 30d
1→ 0%
This endpoint's own trailing-30-day call count, as published by the upstream catalog and snapshotted daily. 17 snapshots so far.
$11.49
Verified settled volume
2,661 settlements proven x402 by their on-chain EIP-3009 marker.
$0.0060
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 2026-08-11 20:34Z
—
Upstream on-chain volume
Reported by the source catalog.
Paid to
0x2880EdfFF13100677Bf97A3CBdF3Bc34771C4E5E

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.

{
  "docs": "https://natur.halowerk.com/llms.txt",
  "name": "synonym_graph",
  "error": "payment_required",
  "accepts": [
    {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "asset": "USDC",
        "version": "2",
        "eip712Domain": {
          "name": "USD Coin",
          "chainId": 8453,
          "version": "2",
          "verifyingContract": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913"
        },
        "network_name": "Base Mainnet",
        "assetTransferMethod": "eip3009"
      },
      "payTo": "0x2880EdfFF13100677Bf97A3CBdF3Bc34771C4E5E",
      "amount": "6000",
      "scheme": "exact",
      "network": "eip155:8453",
      "maxTimeoutSeconds": 300
    }
  ],
  "pricing": "https://natur.halowerk.com/pricing",
  "resource": {
    "url": "https://natur.halowerk.com/v1/synonym-graph",
    "mimeType": "application/json",
    "description": "Assembles all names associated with one taxon into a graph with the accepted name at the centre and every synonym, basionym and alternate representation as a node carrying its status, authority and the register that supplied it. Two registers are queried rather than one because their disagreement is the finding: reconciling datasets that span decades regularly turns up names that GBIF treats as a synonym and WoRMS treats as a separate species, or the reverse, and a service that silently follows…"
  },
  "extensions": {
    "bazaar": {
      "info": {
        "input": {
          "body": {
            "name": "Gadus morhua",
            "include_worms": true
          },
          "type": "http",
          "method": "POST",
          "bodyType": "json"
        }
      },
      "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": {
                "type": "object",
                "required": [
                  "name"
                ],
                "properties": {
                  "name": {
                    "type": "string",
                    "maxLength": 200,
                    "minLength": 2
                  },
                  "include_worms": {
                    "type": "boolean",
                    "default": true,
                    "description": "Query WoRMS as well. Only meaningful for marine taxa but harmless otherwise."
                  }
                },
                "additionalProperties": false
              },
              "type": {
                "type": "string",
                "const": "http"
              },
              "method": {
                "enum": [
                  "POST",
                  "PUT",
                  "PATCH"
                ],
                "type": "string"
              },
              "bodyType": {
                "enum": [
                  "json",
                  "form-data",
                  "text"
                ],
                "type": "string"
              }
            },
            "additionalProperties": false
          }
        }
      }
    }
  },
  "price_usdc": "0.006",
  "description": "Assembles all names associated with one taxon into a graph with the accepted name at the centre and every synonym, basionym and alternate representation as a node carrying its status, authority and the register that supplied it. Two registers are queried rather than one because their disagreement is the finding: reconciling datasets that span decades regularly turns up names that GBIF treats as a synonym and WoRMS treats as a separate species, or the reverse, and a service that silently follows one register hands the user a merge that quietly loses records. Conflicts are therefore listed explicitly with what each register says. For marine taxa WoRMS is noted as the specialist authority and GBIF as the aggregator, which is the ordering a taxonomist would apply, but the response states that rather than acting on it unilaterally. Names are returned with their publication authority so the same binomial published by different authors — a homonym, not a synonym — can be told apart, which is the failure mode that silently merges two unrelated organisms.",
  "inputSchema": {
    "type": "object",
    "required": [
      "name"
    ],
    "properties": {
      "name": {
        "type": "string",
        "maxLength": 200,
        "minLength": 2
      },
      "include_worms": {
        "type": "boolean",
        "default": true,
        "description": "Query WoRMS as well. Only meaningful for marine taxa but harmless otherwise."
      }
    },
    "additionalProperties": false
  },
  "price_model": "per_call",
  "x402Version": 2,
  "instructions": "Sign the accepted terms with an x402 client and repeat the request with the payment header.",
  "payment_header": "PAYMENT-SIGNATURE",
  "capability_request": {
    "url": "https://bedarf.halowerk.com/capabilities/request",
    "cost": "free",
    "method": "POST",
    "description": "Missing a capability, or does the scope not fit? Report the need here - no payment required. Similar reports are bundled; the response returns an id you can check back on.",
    "body_example": {
      "max_price": 0.01,
      "description": "what exactly is needed",
      "requested_capability": "short label"
    }
  }
}

Accepts

The payment requirements as published to the catalog. Read the live 402 before paying — a price here is a claim, not a quote.

0.006USDC≈ $0.006 USD
on Base · exact scheme

Pay 0.006 USDC on Base to 0x2880…C4E5E. The signed payment is good for 5 minutes.

Paid to
0x2880…C4E5E
USD Coin contract
0x8335…02913
Payment window
5 minutes
As published
6000 smallest units
The catalog’s raw entry
[
  {
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "extra": {
      "name": "USD Coin",
      "asset": "USDC",
      "version": "2",
      "eip712Domain": {
        "name": "USD Coin",
        "chainId": 8453,
        "version": "2",
        "verifyingContract": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913"
      },
      "network_name": "Base Mainnet",
      "assetTransferMethod": "eip3009"
    },
    "payTo": "0x2880EdfFF13100677Bf97A3CBdF3Bc34771C4E5E",
    "amount": "6000",
    "scheme": "exact",
    "network": "eip155:8453",
    "maxTimeoutSeconds": 300
  }
]

Extensions

{
  "bazaar": {
    "info": {
      "input": {
        "body": {
          "name": "Gadus morhua",
          "include_worms": true
        },
        "type": "http",
        "method": "POST",
        "bodyType": "json"
      }
    },
    "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": {
              "type": "object",
              "required": [
                "name"
              ],
              "properties": {
                "name": {
                  "type": "string",
                  "maxLength": 200,
                  "minLength": 2
                },
                "include_worms": {
                  "type": "boolean",
                  "default": true,
                  "description": "Query WoRMS as well. Only meaningful for marine taxa but harmless otherwise."
                }
              },
              "additionalProperties": false
            },
            "type": {
              "type": "string",
              "const": "http"
            },
            "method": {
              "enum": [
                "POST",
                "PUT",
                "PATCH"
              ],
              "type": "string"
            },
            "bodyType": {
              "enum": [
                "json",
                "form-data",
                "text"
              ],
              "type": "string"
            }
          },
          "additionalProperties": false
        }
      }
    }
  }
}

Provenance

Seen in the source catalog
2026-08-11 20:34Z
Last indexed by Roundhouse
2026-09-10 20:30Z
Last enriched (probe, favicon, geo)
2026-09-21 06:15Z
x402 version
2
Max timeout
300s
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. 17 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 natur.halowerk.com 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=natur.halowerk.com'
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://natur.halowerk.com/v1/synonym-graph, 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.