geoprimitives
Drop vertices from a geometry while keeping its shape. Use it to cut a boundary down before a call whose cost is vertex-driven -- POST /v1/pip caps on points times polygon vertices, and POST /v1/geometry/buffer and the overlay ops cap at 2000 positions -- and to shrink what you store or draw. The response reports outputVertices next to inputVertices, so the saving is measurable before you spend again. The algorithm is Douglas-Peucker. Send toleranceMeters for a ground tolerance applied isotropically: both axes are scaled to metres at the input's centre latitude first, so at 70 deg N the simplification is not three times as aggressive east-west as north-south, which a raw degree tolerance makes it. Send tolerance instead for the raw degree tolerance if you want turf's behaviour unchanged. Retained vertices come back exactly as sent rather than round-tripped through the scaling. Not topology-preserving: adjacent polygons simplified separately can gap or overlap along a shared edge. Input is EPSG:4326 only. Limits: 100000 positions across the whole document, 1 MiB request body.
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.
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 0.01 USDC on Base to 0x76A5…68FCe. The signed payment is good for 5 minutes.
- Paid to
- 0x76A5…68FCe
- USD Coin contract
- 0x8335…02913
- Payment window
- 5 minutes
- As published
- 10000 smallest units
The catalog’s raw entry
[
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0x76A51b5Dd3729950B3b60c17f19252d221968FCe",
"amount": "10000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 300
}
]Extensions
{
"bazaar": {
"info": {
"input": {
"body": {
"geojson": {
"type": "LineString",
"coordinates": [
[
-150,
61
],
[
-149.98,
61.001
],
[
-149.96,
61.0005
],
[
-149.94,
61.0015
],
[
-149.9,
61.002
]
]
},
"toleranceMeters": 100
},
"type": "http",
"method": "POST",
"bodyType": "json"
},
"output": {
"type": "json",
"example": {
"op": "simplify",
"notes": [
"Tolerance was applied isotropically on the ground by scaling both axes to metres at latitude 61.0010, so 100 m means the same east-west as north-south.",
"Simplification is per-geometry Douglas-Peucker. It does not preserve topology: adjacent polygons simplified separately can gap or overlap along a shared edge."
],
"geojson": {
"type": "Feature",
"geometry": {
"type": "LineString",
"coordinates": [
[
-150,
61
],
[
-149.9,
61.002
]
]
},
"properties": null
},
"inputVertices": 5,
"outputVertices": 2,
"toleranceMeters": 100,
"toleranceDegrees": {
"latitude": 0.00089743142433687,
"longitude": 0.0018482314669043616
}
}
}
},
"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",
"oneOf": [
{
"required": [
"toleranceMeters"
]
},
{
"required": [
"tolerance"
]
}
],
"required": [
"geojson"
],
"properties": {
"geojson": {
"type": "object",
"description": "A GeoJSON Feature, FeatureCollection or Geometry in EPSG:4326, longitude then latitude in degrees. At most 100000 positions across the whole document."
},
"tolerance": {
"type": "number",
"maximum": 180,
"minimum": 0,
"description": "Raw Douglas-Peucker tolerance in degrees, applied to longitude and latitude alike and therefore anisotropic away from the equator. Send this or toleranceMeters, never both."
},
"highQuality": {
"type": "boolean",
"default": false,
"description": "Skip the radial-distance pre-pass. Slower, and keeps more of the original shape."
},
"toleranceMeters": {
"type": "number",
"maximum": 1000000,
"minimum": 0,
"description": "Ground tolerance in metres. A vertex is dropped when removing it moves the line by less than this. Send this or tolerance, never both."
}
},
"additionalProperties": false
},
"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"
}
}
}
}
}
}
}Provenance
- Seen in the source catalog
- 2026-08-21 17:26Z
- Last indexed by Roundhouse
- 2026-09-20 17:20Z
- Last enriched (probe, favicon, geo)
- 2026-09-23 21:15Z
- x402 version
- 2
- Max timeout
- 300s
- Liveness probe
- HTTP 404
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. 28 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 geoprimitives 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=geoprimitives' 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.geoprimitives.dev/v1/geometry/simplify, 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.