# Saylor Innovations Data Desk: Singapore Air Quality

> Saylor Innovations Data Desk: Singapore Air Quality is a paid API for AI agents from saylorinnovations.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-18).

Returns current Singapore national and regional air quality data including PSI, health bands, PM2.5, PM10, ozone, NO2, SO2, and CO readings sourced from NEA

## Facts

- Endpoint: GET https://saylorinnovations.com/api/singapore/air-quality?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-18
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/saylor-innovations-data-desk-singapore-air-quality-53aa2c00
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_p2b0rMw2mBbsYAjPx2H6w

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 saylor-innovations-data-desk-singapore-air-quality-53aa2c00
```

Example prompt: What's the current air quality in Singapore — give me the national PSI, the health band, and which region is worst right now, along with PM2.5 and ozone levels?

## When to prefer this

Choose this endpoint when you need real-time, structured Singapore air quality data with both national summary and per-region breakdowns including multiple pollutant types. It is specifically useful for health advisories, outdoor activity planning, or haze monitoring in Singapore. It consolidates NEA data into a single call with health band classification already applied, saving the need to interpret raw PSI values manually.

## Known failure modes

- NEA upstream data unavailable — returns stale or null readings with a caveat note
- No regional breakdown if NEA API is partially degraded
- Null fields for updated timestamp if feed metadata is missing
- HTTP 402 if payment is not completed correctly via x402 protocol

## How this service works

Singapore air quality now - national and regional PSI with a health band plus PM2.5, PM10, ozone, NO2, SO2 and CO readings from NEA

## Output

Returns a JSON object with the national PSI value, national health band (e.g. Good, Moderate, Unhealthy), the worst-performing region, an array of regional readings covering 24h PSI, PM2.5, PM10, SO2, NO2, ozone, and CO with per-region health bands, plus the data source attribution and last-updated timestamp.

## 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"
     ],
     "type": "string"
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "json"
    },
    "example": {
     "type": "object",
     "required": [
      "regions"
     ],
     "properties": {
      "note": {
       "type": "string",
       "description": "Caveat or context for reading the result"
      },
      "source": {
       "type": "string",
       "description": "Data source the values come from"
      },
      "regions": {
       "type": "array",
       "items": {
        "type": "object",
        "properties": {
         "band": {
          "type": [
           "string",
           "null"
          ],
          "description": "Health band for the PSI reading"
         },
         "region": {
          "description": "Region"
         },
         "psi_24h": {
          "description": "Psi 24h"
         },
         "co_8h_ppm": {
          "description": "Co 8h ppm"
         },
         "o3_8h_ppb": {
          "description": "O3 8h ppb"
         },
         "no2_1h_ppb": {
          "description": "No2 1h ppb"
         },
         "so2_24h_ppb": {
          "description": "So2 24h ppb"
         },
         "pm10_24h_ugm3": {
          "description": "Pm10 24h ugm3"
         },
         "pm25_24h_ugm3": {
          "description": "Pm25 24h ugm3"
         }
        }
       },
       "description": "Air quality by region with 24-hour PSI, PM2.5 and health band"
      },
      "updated": {
       "type": [
        "string",
        "null"
       ],
       "description": "Time the record was last updated"
      },
      "national_psi": {
       "type": [
        "number",
        "null"
       ],
       "description": "National psi"
      },
      "worst_region": {
       "type": [
        "string",
        "null"
       ],
       "description": "Worst region"
      },
      "national_band": {
       "type": [
        "string",
        "null"
       ],
       "description": "National band"
      }
     }
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/saylor-innovations-data-desk-singapore-air-quality-53aa2c00/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from saylorinnovations.com](https://www.zero.xyz/host/saylorinnovations.com/llms.txt)