# Heurist Mesh FRED Macro Series Snapshot

> Heurist Mesh FRED Macro Series Snapshot is a paid API for AI agents from mesh.heurist.xyz, paid per call via x402, $0.003/call, status unknown (last checked 2026-09-15).

Returns the latest and previous readings plus derived change metrics for a single curated macroeconomic data series from FRED.

## Facts

- Endpoint: POST https://mesh.heurist.xyz/x402/solana/agents/FredMacroAgent/macro_series_snapshot
- Price: $0.003/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/heurist-mesh-fred-macro-series-snapshot-4a452533
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_5orsF_BA7qHwBpHTNLRpa

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 heurist-mesh-fred-macro-series-snapshot-4a452533 -d '<json body>'
```

Example prompt: What's the latest FRED macro snapshot for CPI — give me the newest reading, the previous one, and how much it changed?

## When to prefer this

Use this endpoint when you need a quick, single-series snapshot of the newest macro data point alongside its predecessor and change metrics — ideal for fast economic pulse checks, alert triggers, or feeding derived change signals into downstream analysis. Prefer this over the multi-pillar regime summary when you need granular point-in-time data for one specific series rather than a broad cross-pillar narrative.

## Known failure modes

- Unsupported or unrecognized macro series identifier returns an error or empty result
- FRED source data temporarily unavailable causes fetch failure
- Malformed request body missing required series field returns validation error
- Rate limiting or payment failure (x402) blocks the request
- Series has not been updated recently, so latest and previous readings may reflect older data

## How this service works

Return a compact latest read for one curated macro series. Use this for the newest supported macro reading, previous reading, and derived change metrics.

## Output

Returns a compact JSON object containing the macro series name, the latest available data point value and its release/observation date, the previous data point value and its date, and derived change metrics (absolute and/or percentage change) between the two readings.

## 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",
    "bodyType",
    "body"
   ],
   "properties": {
    "body": {
     "type": "object",
     "required": [
      "series_key"
     ],
     "properties": {
      "debug": {
       "type": "boolean",
       "default": false,
       "description": "Debug mode flag. ALWAYS use false."
      },
      "series_key": {
       "type": "string",
       "description": "Curated macro series key (e.g. headline_cpi, fed_funds, real_gdp). See enum for all supported keys."
      }
     }
    },
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "POST"
     ],
     "type": "string"
    },
    "bodyType": {
     "enum": [
      "json"
     ],
     "type": "string"
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object",
     "properties": {
      "result": {
       "type": "object",
       "additionalProperties": true
      }
     }
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/heurist-mesh-fred-macro-series-snapshot-4a452533/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from mesh.heurist.xyz](https://www.zero.xyz/host/mesh.heurist.xyz/llms.txt)