Separate three kinds of access
The SEC supplies official JSON APIs and archive documents. A filing-focused MCP server can expose search and document-reading tools over those records. Synoptic MCP exposes stream discovery and accessible stored posts. These are different scopes of work.
Do not assume that a server finding an SEC stream can also retrieve a companyfacts value, read a full 10-K or parse an insider transaction. Look for that operation in the server’s actual tool list, then test a known filing or event.
What was verified here
On 2026-11-14, anonymous requests successfully initialized Synoptic MCP, listed its tools, searched the public catalog for SEC and inspected the canonical SEC stream. A subsequent anonymous get_stream_posts request returned HTTP 401 with Authentication required.
That is a live connector check with a clear boundary: public discovery worked and subscriber-post retrieval required authentication. It is not an end-to-end filing-analysis test and does not establish source-document parsing, coverage completeness or latency.
Choose the next check
Connect correctly
Use the documented remote endpoint and inspect live tool schemas.
Read guide ↗Ask a bounded filing question
Use prompts that request dates, identifiers and source evidence.
Read guide ↗Compare server scopes
Read vendor documentation with a test-status column.
Read guide ↗Reproduce the public probe
Run the anonymous calls and inspect the observed result.
Read guide ↗Choose permissions
Separate public catalog access from authenticated post reads and writes.
Read guide ↗Who publishes this guide
This is a Synoptic-owned publication and is not affiliated with the SEC. The comparison includes filing-focused alternatives because stream research does not cover every EDGAR task. We make no recommendation based on an unperformed competitor benchmark.
The Synoptic workflow explains where its verified connector fits: discover the correct stream, confirm your entitlement and use accessible posts as references for further reading.
Source notes
- Synoptic MCP documentation ↗
Endpoint, clients, public discovery, OAuth scopes and actual research-tool behavior.
- Official SEC API documentation ↗
Official company submissions and XBRL access; not an SEC-operated MCP service.
- Model Context Protocol architecture ↗
MCP host/client/server and tools; transport differs from a domain-specific REST API.
- Synoptic SEC stream ↗
Public catalog metadata checked through real anonymous MCP calls on 2026-11-14.
The Synoptic workflow
Read Synoptic MCP setup
Start with public discovery, then connect your account only when you need accessible posts.
Read Synoptic MCP setup