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Specialist research. Published by Synoptic.

Sources & methodology

SEC data engineering

Primary sources — EDGAR API Field Guide

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Synoptic research·Reviewed 2026-11-14·How we assess sources

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Find in this table6 records


SEC EDGAR API documentation	Official submissions, XBRL, bulk data, update schedule and access requirements.
SEC Developer Resources	Official archive, index and RSS options; fair-access request limit.
Synoptic SEC stream	Canonical non-delayed-labelled stream. Public MCP metadata checked 2026-11-14; latency was not measured.
sec-api.io official product site	Vendor lists separate query, full-text, extraction and real-time APIs; not independently benchmarked.
Synoptic REST reference	Stored stream posts, source metadata and post retrieval constraints.
Synoptic WebSocket subscriptions	Live post transport, filtering and bounded catch-up.

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