# Interzoid IRS Per Diem Rates Lookup

> Interzoid IRS Per Diem Rates Lookup is a paid API for AI agents from api.interzoid.com, paid per call via x402, $0.25/call, status unknown (last checked 2026-09-15).

Retrieves current IRS per diem rates (lodging, meals, incidentals, and total) for a given US location by address, ZIP code, city, county, or state

## Facts

- Endpoint: GET https://api.interzoid.com/getirsperdiemrates
- Price: $0.25/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/interzoid-irs-per-diem-rates-lookup-8fcc83e1
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_3WN7yjlujm3xNVS-sfE3P

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 interzoid-irs-per-diem-rates-lookup-8fcc83e1
```

Example prompt: What are the current IRS per diem rates for San Francisco, CA — I need the lodging allowance, meals and incidentals, and whether it's a high-cost locality?

## When to prefer this

Use this endpoint when you need authoritative IRS-sourced per diem rates for a specific US location, particularly for corporate travel expense reimbursement, tax compliance, HR policy enforcement, or ERP/CRM enrichment. Prefer this over manual lookups or static tables when the effective period or high-cost locality classification matters for accuracy.

## Known failure modes

- Location not found in CONUS per diem database — returns error or empty result
- Non-US or non-CONUS location (e.g. Alaska, Hawaii, overseas) — not supported
- Ambiguous location string that cannot be resolved — may return incorrect or null jurisdiction
- Payment failure or insufficient USDC — 402 Payment Required before response
- Malformed or missing lookup query parameter — returns 400 Bad Request

## How this service works

Retrieve current IRS high-low method per diem rates for any US location to support accountable-plan travel reimbursement (Revenue Procedure 2019-48). Classifies each location as High-Cost or Low-Cost with separate lodging and meals-and-incidentals (M&IE) components.

## Output

Returns a JSON object with the city and state, IRS jurisdiction name, total per diem rate, lodging allowance, meals and incidentals allowance, IRS locality classification (e.g. High-Cost Locality), and the effective IRS notice period for that location.

## Example request

```json
{
 "input": {
  "type": "http",
  "method": "GET",
  "queryParams": {
   "lookup": "Denver, CO"
  }
 }
}
```

## 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"
    },
    "queryParams": {
     "type": "object",
     "required": [
      "lookup"
     ],
     "properties": {
      "lookup": {
       "type": "string",
       "description": "Full street address, ZIP code, city, county, or state (CONUS)"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "City": "New York",
  "Code": "Success",
  "State": "New York",
  "Credits": "0",
  "Jurisdiction": "New York, NY (Manhattan)",
  "TotalPerDiem": "$319.00",
  "EffectivePeriod": "October 1, 2024 — September 30, 2025 (IRS Notice 2024-68)",
  "LodgingAllowance": "$233.00",
  "IRSClassification": "High-Cost Locality",
  "MealsIncidentalAllowance": "$86.00"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/interzoid-irs-per-diem-rates-lookup-8fcc83e1/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.interzoid.com](https://www.zero.xyz/host/api.interzoid.com/llms.txt)