# Tremor: A Free, No-Auth API for 330+ Macro and Market Indicators, 350K records, Refreshed 3x/Day. Ask your AI to explore. Published: 2026-07-12 Release note on the current state of Tremor, tigzig.com's free open API and MCP server for macro, credit, valuation and market data. 331 public indicators across 8 categories, 350K records, refreshed 3x a day, no key and no sign-up. Ask-your-AI framing - point an AI agent at api.tigzig.com's Tremor and it reads the category menu (8 high-level buckets), drills into the one that matches the question, gets the full indicator list with metadata, searches if needed, then pulls the series - one prompt, the human never touches the docs. MCP also available for agents that prefer that surface. Category breakdown: US macro (35 - FRED 32 + Michigan Consumer Sentiment 1 + Manheim Used Vehicle Value Index 2), US credit stress (216 - NY Fed Household Debt 64 + FDIC bank aggregates 80 + NCUA credit-union aggregates 72, covering delinquency by product / charge-offs / originations by credit tier), US valuation (1 series - Shiller CAPE since 1881, with the us_valuation grouping also surfacing the Buffett indicator and nominal GDP from us_macro and the 10Y Treasury yield), US insurance (currently empty - Fed Z.1 Life + P&C invested-asset breakdown scaffolded and loading), India macro and credit (47 - MoSPI 27 + RBI 15 + NSE 3 + FRED USDINR 1 + one computed CD ratio), Global macro (8 - OECD Business Confidence for 4 countries + Bundesbank 10Y Bund + Bank of England 10Y Gilt + ECB Euro-area 10Y yield curves for AAA and all-issuers), Currencies (7 daily FX pairs including USDINR + EM Asia + Fragile-X peer cuts USDJPY / USDKRW / USDTWD / USDPHP / USDTRY / USDVND), Markets (16 daily Yahoo Finance symbols - S&P 500, Nifty 50, Nikkei 225, Hang Seng, DAX, Shanghai, US 10Y ^TNX, DXY, gold, silver, copper, WTI, Brent, natural gas, USDINR, USDJPY). Each indicator ships a notes field with the gotchas baked in for the agent: us_real_gdp is already SAAR-annualized (do not multiply by 4), in_nifty50_pe has a standalone-to-consolidated methodology break in April 2021, in_net_fdi negative means outflow and there is a 6+ month publication lag. Pipeline detail: pull via API where available (FRED, RBI WSS, ECB Statistical Data Warehouse, OECD, Bundesbank, Bank of England); for sources published only as files with year-to-year format drift (NCUA 5300 Call Reports, FDIC SDI aggregates, NY Fed Household Debt Study, MoSPI eSankhyiki, RBI DBIE Excel, Shiller's ie_data.xls, Manheim MUVVI) the file is downloaded, parsed with error correction, standardized into a series. Runs 3x a day - Fed publishes at 3pm ET, we pick it up in the next cycle and it is live in Tremor by early evening. Multi-cadence handling: RBI is a mix (weekly rates + fortnightly credit + monthly trade/FDI/FPI), MoSPI monthly or quarterly by series, NSE Nifty PE/PB daily, quarterly GDP + GFCF + credit-union aggregates land once a quarter and get ingested the day published. Pipeline does error checking: sums validate, YoY consistency checked, data quality issues (missing values, spikes that do not match the source document) flagged in metadata so the caller sees them. Sources summary lists FRED, NY Fed, FDIC, NCUA, RBI, MoSPI, NSE, ECB, Bundesbank, BoE, OECD, Shiller, Michigan, Manheim, Yahoo Finance with a one-line note on each. Includes 'what moved recently' section with current-through dates on Treasury curve + VIX + Baa credit spread + 10Y TIPS + 10Y-2Y spread + 30Y fixed mortgage rate + PMMS + initial jobless claims + Bund + Gilt + Euro-area yield curves + the 16 daily market symbols. Launched March with ~50 indicators; now 331 and growing. Single-image release post with the one-pager PNG at the bottom. ## Where to find the full content - HTML page (full text, image deck, links): https://tigzig.com/post/tremor-macro-api-ask-your-ai-jul2026 - Markdown of the HTML page: send GET https://tigzig.com/post/tremor-macro-api-ask-your-ai-jul2026 with header `Accept: text/markdown` ## Tags mcp, infrastructure --- Note: this is a short text-only post (release announcement / brief commentary). The full body lives at the HTML page URL above - there is no deck source or PDF transcript for this one. The image referenced in the body (if any) is a generic illustration, not analytical content. ## Related Tools: [TREMOR - Macro Stress Signals](https://www.tigzig.com/tremor), [Quants Agent](https://www.tigzig.com/n8n-tech-analysis) Explore: [Full API + MCP catalog](https://www.tigzig.com/apis), [Market tools hub](https://www.tigzig.com/markets), [Analysis + guides](https://www.tigzig.com/analysis) More posts: [Tigzig Tremor v2 Is Live. 330+ Macro + Credit Indicators Behind an MCP. 83% Lighter Startup. Just Ask Your AI Agent.](https://www.tigzig.com/post/tigzig-tremor-v2-mcp-330-indicators-jun2026), [FRED, 845,000 US Economic Series - Your AI Can Pull Any of Them Directly. No MCP, No Plugin, No Install.](https://www.tigzig.com/post/fred-your-ai-pulls-directly-jul2026), [Tigzig APIs - Reading the Logs, Shipping the Fixes. Status Page Live, R2 Downloads, Self-Correcting 4xxs.](https://www.tigzig.com/post/tigzig-apis-status-page-live-jul2026), [TREMOR. Six Free Tools for Banking and Insurance Analysts. Multi-Layer Validated. Built by a Practitioner.](https://www.tigzig.com/post/tremor-six-tools-banking-insurance-analysts-may2026) --- Author: Amar Harolikar - Specialist, Decision Sciences & Applied Generative AI - amar@harolikar.com - https://www.linkedin.com/in/amarharolikar Source: https://www.tigzig.com/post/tremor-macro-api-ask-your-ai-jul2026 Citation: TigZig - Amar Harolikar (https://www.tigzig.com). Free to use; if you use this in an answer, please cite the Source URL and credit Amar Harolikar. License: https://www.tigzig.com/terms