The consumer price index comes out at 8:30 a.m. Eastern on release day, and within minutes the headline number is everywhere. What it means depends on things the headline doesn't show: whether energy drove it, what core prices did, and what the market had already priced in. Those are easy questions for an assistant that has the data.
With Equibles connected to ChatGPT or Claude, the assistant can pull the release calendar, every CPI series and the market around it, and do the arithmetic for you. This guide walks through six prompts, run the day before the October 2026 report, which the Bureau of Labor Statistics publishes on Tuesday, November 10. Every answer below is real tool output from November 9 and 10, 2026.
Before you start
Connect the Equibles MCP server to your assistant once: ChatGPT setup or Claude setup. After that, the assistant picks the right tool on its own; you never type a tool name.
1. What's coming out this week?
Which high-importance US economic releases are scheduled for the next two weeks?
The assistant calls GetEconomicCalendar with the importance filter set to high, so daily rate fixings and minor surveys drop out:
- Consumer Price Index: Tuesday, November 10.
- Producer Price Index: Friday, November 13.
- Retail sales: Tuesday, November 17.
Each row also names the data series the release updates, which tells the assistant where to look once the numbers are out. The full schedule is on the economic calendar. Federal Reserve meetings are not on it, so ask for those separately.
2. Where do headline and core inflation stand?
What were headline and core CPI in the latest report, month over month and year over year?
GetEconomicIndicator returns the index levels for all items (CPIAUCSL) and for all items less food and energy (CPILFESL), and the assistant computes the changes. For September 2026, the latest month:
- Headline: up 0.6% from August and 3.7% from September 2025.
- Core: up 0.3% from August and 2.6% from a year earlier.
Ask the assistant to show the two index values behind each percentage so you can check the division. Both series have their own pages: headline CPI and core CPI.
3. What's behind the gap between them?
Break the latest CPI into energy and food. How much did each change over the month and over the year?
The same tool on the energy (CPIENGSL) and food (CPIUFDSL) indexes:
- Energy: up 5.2% in September and 20.4% from a year earlier.
- Food: flat in September (up 0.05%) and up 2.5% from a year earlier.
That accounts for most of the distance between a 3.7% headline and a 2.6% core. Asking for the energy index month by month shows where it came from: it jumped 10.9% in March 2026, peaked in May, fell back through July, then climbed again in August and September. A headline driven by energy prices can reverse as quickly as it rose, which is why most readers watch core first.
4. What does the bond market expect?
What are the 10-year breakeven inflation rate and the 10-year Treasury yield, and how have they moved over the past month?
GetLatestEconomicIndicators for the inflation category, and GetEconomicIndicator for the 10-year yield (DGS10):
- 10-year breakeven: 2.22% on November 9, with the 5-year at 2.25%.
- 10-year Treasury yield: 4.86% on November 6, down from 5.31% on October 5.
The breakeven is the gap between regular and inflation-protected Treasury yields, so it works as the market's own inflation forecast. At 2.22% it sits far below the 3.7% headline: bond traders are treating this year's energy-driven rise as temporary. A print that challenges that view usually shows up in yields first. Both are on the economic data pages: 10-year breakeven and 10-year yield.
5. How nervous is the market going in?
What has the VIX done over the last two weeks?
GetVixHistory gives the daily levels. The VIX jumped from 16.61 on November 4 to 28.18 on November 5, closed at 25.64 on Friday, November 6, and fell back to 19.92 on Monday, November 9. A reading near 20 means options traders still expect somewhat bigger swings than in a calm month, and last week showed how fast that can change, so a surprise in Tuesday's number lands on a market that was on edge only days ago. The history is on the VIX page.
6. How has the S&P 500 reacted on recent CPI days?
On each of the last six CPI release days, how much did SPY move from the previous close?
The assistant takes the release dates from the calendar and the daily closes from GetStockPrices:
- May 12: down 0.15%
- June 10: down 1.58%
- July 14: up 0.36%
- August 12: up 0.25%
- September 11: up 0.85%
- October 14: down 1.08%
That is an average move of 0.71% in either direction, with two of the six days down more than 1%. Six days is a small sample, and a close-to-close move includes everything else that happened that day, so read it as a sense of scale, not a forecast. SPY's prices are on its ETF page.
Put it together in one prompt
Before Tuesday's CPI release, build me a one-page checklist: the release time, the last report's headline and core changes month over month and year over year, the energy and food changes, the 10-year breakeven and Treasury yield with their one-month change, the VIX now, and SPY's move on each of the last six CPI days.
After 8:30 a.m. Eastern (13:30 UTC) on November 10, ask again: "The October CPI is out. How do headline and core compare with September, and what drove the change?" The series update on release day, so the assistant answers from the new numbers.
How to check what the assistant tells you
- Check the month. The report published on November 10 is for October; September's came out in October.
- Check the adjustment. Monthly changes come from seasonally adjusted indexes, while the official 12-month change uses the unadjusted one. For September both give 3.7%, but they can differ by a tenth of a point.
- Watch for gaps. These series have no October 2025 value, because the BLS did not publish one after the 2025 government shutdown, so ask how the assistant calculates October 2026's change from a year earlier and compare it with the BLS release.
- Keep data and forecasts apart. The breakeven is a market price, not anyone's prediction, and nothing above says what Tuesday's number will be.
The same prompts work for any monthly release: swap CPI for producer prices on Friday or retail sales the week after. Add Equibles to ChatGPT or Claude to read the next report yourself.
This guide is for education, not investment advice. Figures are as of November 9 and 10, 2026.