# USGS ASCE 7 Seismic Design Values Lookup

> USGS ASCE 7 Seismic Design Values Lookup is a paid API for AI agents from payai.agentstools.dev, paid per call via x402, $0.005/call, status unknown (last checked 2026-10-12).

Returns USGS ASCE 7 seismic design parameters (Ss, S1, SDS, SD1, PGA, seismic design category) for a US location by address or coordinates.

## Facts

- Endpoint: GET https://payai.agentstools.dev/hazard/seismic?utm_source=zero.xyz
- Price: $0.005/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-12
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/usgs-asce-7-seismic-design-values-lookup-36424598
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_Y3o98X6_O0GjVQsCQ11do

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability usgs-asce-7-seismic-design-values-lookup-36424598
```

Example prompt: What are the ASCE 7-22 seismic design values — Ss, S1, SDS, SD1, seismic design category, and PGA — for a Risk Category II building with site class D at 1600 Pennsylvania Ave NW, Washington DC?

## When to prefer this

Use this endpoint when you need official USGS-sourced ASCE 7 seismic design parameters for structural or geotechnical engineering work at a specific US location. Ideal for automating code-compliant seismic design checks, building permit preparation, or feasibility studies where Ss, S1, SDS, SD1, seismic design category, and PGA are required inputs. Prefer this over manual USGS web tool lookups when integrating seismic data into automated design workflows.

## Known failure modes

- Address not geocodable or outside the US — returns error indicating location not supported
- Invalid or out-of-range lat/lon coordinates — returns validation error
- Neither address nor lat/lon provided — returns missing required parameter error
- Unsupported ref_doc, site_class, or risk_category enum value — returns schema validation error
- USGS backend unavailable — returns upstream service error
- Payment not provided or insufficient — returns HTTP 402 Payment Required

## How this service works

USGS ASCE 7 seismic design values for a US point: Ss, S1, SDS, SD1, seismic design category, and PGA, for a US address or coordinates. Optional reference document, risk category, and site class.

## Output

Returns USGS ASCE 7 seismic design parameters including Ss, S1, SDS, SD1, PGA, and seismic design category for the specified US location, computed using the chosen reference document version (asce7-22/16/10), site class, and occupancy risk category.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET",
      "HEAD",
      "DELETE"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "required": [],
     "properties": {
      "lat": {
       "type": "number",
       "description": "Latitude [-90,90] (with lon)"
      },
      "lon": {
       "type": "number",
       "description": "Longitude [-180,180] (with lat)"
      },
      "address": {
       "type": "string",
       "description": "US street address (auto-geocoded)"
      },
      "ref_doc": {
       "enum": [
        "asce7-22",
        "asce7-16",
        "asce7-10"
       ],
       "type": "string",
       "description": "ASCE 7 reference document (default asce7-22)"
      },
      "site_class": {
       "enum": [
        "A",
        "B",
        "C",
        "D",
        "E",
        "default"
       ],
       "type": "string",
       "description": "Soil site class (default D)"
      },
      "risk_category": {
       "enum": [
        "I",
        "II",
        "III",
        "IV"
       ],
       "type": "string",
       "description": "Occupancy risk category (default II)"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/usgs-asce-7-seismic-design-values-lookup-36424598/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from payai.agentstools.dev](https://www.zero.xyz/host/payai.agentstools.dev/llms.txt)