Changelog

Changes to the Arche API, newest first.

October 2026

Arche API v1 is available.

Arche serves company fundamentals from SEC filings, normalized from XBRL, available as they were known on any date and traceable to the filing each figure came from.

• Financial statements. Income statements, balance sheets and cash flow statements, with every version retained. See Data model and Versioning.
• Point-in-time financials. Statements as they were known on a given date, for research and backtests free of look-ahead bias. See Point-in-time research.
• Company identity. Resolution by CIK, ticker or name. See Company identity.
• Metrics and time series. A published definition for every metric. See Metric catalog and Time series.
• Provenance. The filing, concept and context behind each figure. See Provenance.
• Restatements. Alerts, version-to-version deltas and signed webhooks. See Restatement drift and Webhooks.
• Modeling. Trailing twelve months, growth, ratios and point-in-time universe snapshots. See Modeling.
• Narrative disclosures. The text disclosures filed alongside the numbers. See Narrative disclosures.
• Coverage and data quality. Coverage by company and metric, and the quality checks behind each statement. See Coverage and data quality.
• MCP. A Model Context Protocol server for AI agents. See MCP.
• Bulk export. The full corpus as daily Parquet snapshots. See Bulk export.

Five plans are available, from Free to Enterprise. See Rate limits for what each includes.