Part 2: Inflation Tracking — Automate Your CPI, PPI & PCE Monitoring

Use Cases at a Glance

BLS API Setup

The Bureau of Labor Statistics maintains the most granular inflation data. Registration is optional but recommended for higher rate limits.

1. Register at data.bls.gov/registrationEngine
2. Generate API key (optional but gives 5,000 requests/day vs 500/day)
3. Store as environment variable: BLS_API_KEY

Key BLS series IDs used in this part:

• CUSR0000SA0 — CPI-U (Consumer Price Index for All Urban Consumers), headline inflation
• CUSR0000SA0L1E — Core CPI (excludes food and energy)
• WPSFD4 — PPI Final Demand (Producer Price Index)

Additional series via FRED:

• PCE (FRED series) — Personal Consumption Expenditures (inflation measure preferred by Fed)
• DPCCRG3M086SBEA — Core PCE (Fed's explicit target is 2% on Core PCE)

Rate limits: 500 requests/day (unregistered), 5,000 requests/day (registered with API key). This series makes 2-3 API calls per CPI release, so registered access is recommended for peace of mind.

Monthly CPI Brief

Release cadence: CPI releases mid-month, typically on the second or third Tuesday or Wednesday. The exact date varies; the BLS publishes the upcoming 3 months of release dates at data.bls.gov/pub/news.release/archives.

Agent configuration example:

name: inflation-monitor
description: CPI, Core CPI, PPI, and PCE tracking
frequency: variable (see HEARTBEAT section)
cpi_release_dates_q1_2026:
  - 2026-01-13  # January CPI
  - 2026-02-10  # February CPI
  - 2026-03-11  # March CPI
api_keys:
  bls_api_key: ${BLS_API_KEY}
status_thresholds:
  hot: "> 3%"       # YoY inflation above 3%
  warm: "2% - 3%"   # Elevated but moderating
  cool: "1% - 2%"   # Approaching target
  cold: "< 1%"      # Below target (deflation risk)

Pre-release brief (day before): Show last month's reading, the current month's consensus estimate (pulled from financial data sources or noted as manual check), and what economists are watching.

Post-release brief (8:35 AM, 5 min after official release):

• Actual headline CPI: YoY % and MoM %
• Core CPI: YoY % and MoM %
• Comparison to prior month and consensus
• Classification: HOT (>3% YoY), WARM (2-3%), COOL (1-2%), COLD (<1%)
• Trend note: acceleration or deceleration vs prior 3 months

PPI and PCE Monitoring

Producer Price Index (PPI): Measures inflation from the producer/seller's perspective. It's a leading indicator for CPI because producer cost increases often pass through to consumers over time. PPI releases monthly, typically a day before CPI.

Pull WPSFD4 (Final Demand) from BLS. Compare YoY trend to CPI — if PPI is rising faster than CPI, it signals potential future inflation pressure on consumers.

PCE (Personal Consumption Expenditures): The Federal Reserve's preferred inflation measure because it's broader and differently weighted than CPI. The Fed's explicit 2% inflation target refers to Core PCE specifically, not CPI. PCE releases monthly as part of the income/spending report (BEA), typically in the third or fourth week of the month.

Core PCE (excludes food and energy) is what the Fed targets. When Core PCE is running at 2.5% and the Fed says "inflation is above target," they're referring specifically to Core PCE.

Trend Analysis

Beyond month-to-month readings, the agent tracks inflation trends to answer: is inflation accelerating or decelerating?

1. Store the last 12 months of CPI readings
2. Compute 3-month moving average (current + prior 2 months) ÷ 3
3. Compute 6-month moving average
4. Compare current reading to moving averages: if above both, inflation accelerating; if below both, decelerating
5. Note the context: "Inflation has been decelerating for 4 consecutive months but remains 1.2pp above Fed target"

This trend view is particularly valuable for options traders because sustained deceleration + still-elevated inflation creates unique implied volatility conditions.

HEARTBEAT Schedule

# CPI release morning (7 days before)
0 9 [cpi_date-7] * * — 7 days before CPI: countdown alert with consensus

# CPI release morning (1 day before)
0 9 [cpi_date-1] * * — 1 day before CPI: reminder with prior month recap

# CPI release (morning of, 8:30 AM ET)
0 8 [cpi_release_dates] * * — Morning of CPI: note time of release

# CPI release (5 minutes after)
35 8 [cpi_release_dates] * * — 8:35 AM: Poll BLS API, post full brief

# Monthly trend summary
0 9 1 * * — First of each month: summarize prior month inflation trend

Sample CPI Release Brief

FAQ

What's the difference between CPI, Core CPI, PPI, and PCE?

CPI (Consumer Price Index) measures the average price change for a basket of consumer goods and services — the headline inflation number most commonly cited in news. It includes everything: food, energy, housing, transportation, etc.

Core CPI excludes food and energy from the headline number. Food and energy prices are volatile and can spike due to supply shocks (bad harvest, geopolitical tensions) rather than underlying demand-driven inflation. By excluding them, Core CPI shows the underlying inflation trend more cleanly.

PPI (Producer Price Index) measures price changes from the seller's perspective — what factories, farmers, and manufacturers pay for inputs and what they charge for finished goods. PPI is a leading indicator for CPI because when producer costs rise, that inflation eventually gets passed through to consumers.

PCE (Personal Consumption Expenditures) is the Federal Reserve's preferred inflation measure. It's broader than CPI, weighted differently (giving more weight to items people actually spend more on), and updated monthly as part of the income/spending report. Core PCE (excluding food and energy) is what the Fed's 2% inflation target explicitly refers to — not CPI.

When does CPI release each month?

CPI releases mid-month, typically on the second or third Tuesday, Wednesday, or Thursday. The exact date varies month to month and is published by the BLS in advance. The release time is always 8:30 AM ET. The agent config maintains the upcoming 3 months of release dates and fires countdown alerts at 7 days, 1 day, and morning-of. The BLS website (data.bls.gov/pub/news.release/archives) publishes the full year of CPI release dates.

How does high CPI affect options traders?

In the periods leading up to a CPI print, IV on SPY and QQQ options typically rises as traders buy protection or establish speculative positions. After a surprisingly hot CPI (above consensus), the market often sells off and IV spikes further. After an in-line or cool CPI, IV often drops (IV crush similar to post-earnings). The pre-release brief from this agent, combined with the options flow monitoring in the OpenClaw for Options Trading series, gives you both the macro catalyst awareness and the market microstructure view.