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SigmaScribe MCP server

Give your AI assistant grounded access to SigmaScribe credit graphs, equity research graphs, and company filings. Connect in minutes with a one-time OAuth sign-in.

MCP server URL
https://mcp.sigmascribe.ai/mcp

Overview

What the server does

The SigmaScribe MCP server is a stateless bridge between your AI client and the data produced by the SigmaScribe research pipeline. Once connected, your assistant can discover covered companies, search filings, navigate structured credit and equity graphs, and open interactive scorecards and research funnels. It speaks MCP over streamable HTTP, so any MCP-capable host can use it.

Grounded, structured data

Answers trace back to real filings and the same graphs used inside the app.

Interactive MCP Apps

Live credit scorecards and research graphs render right inside supported hosts.

Authentication

OAuth through your MCP host

One-time OAuth sign-in

Point your client at https://mcp.sigmascribe.ai/mcp. The first connection triggers a sign-in and consent flow in your browser, and your client stores the resulting token automatically.

Quickstart

Connect your client

  1. 1
    In Claude (web or desktop), open Settings → Connectors.
  2. 2
    Click Add custom connector and paste the server URL below.
  3. 3
    Complete the one-time sign-in, then enable SigmaScribe from the + menu in any chat. Scorecards and research graphs render inline.
Connector URL
https://mcp.sigmascribe.ai/mcp

Reference

Tools

Once connected, your assistant automatically detects these tools and calls the relevant one for a given question.

Discovery

Find companies and the graphs available for them.

list_us_companiesno parameters

List all US companies with filings coverage. Returns company name and ticker.

list_credit_graphsno parameters

List tickers that have a credit graph seed available.

list_equity_graphsno parameters

List tickers that have an equity / research graph seed available.

list_company_filescompany_name

List document files for a company (type, fiscal period, publication date). Call this before search_documents.

Search

Keyword search across a company’s filings.

search_documentscompany_name, query, filenames

BM25 keyword search over filings. Search one metric or fact at a time; filenames are required (get them from list_company_files).

Graph readers

Navigate structured credit and equity research graphs by path.

read_credit_graphticker, path = "/"

Read credit graph data by a filesystem-style path.

//topics/facts/facts?topic=X/assumptions/insights/scores/ratios/tables/tables/{id}/modifiers/watches/gaps/edges?source=X/edges?target=X/rating/financials/operating_metrics/scenarios/suggested_scenarios
read_equity_graphticker, path = "/"

Read equity research graph data by path (evidence funnel of subjects, insights, and convictions).

//subjects/subjects/{id}/subjects/{id}/entries/insights/insights/{id}/insights/{id}/assumptions/convictions/convictions/{id}/convictions/{id}/watches/links/gaps/pm_inputs/financials/operating_metrics

Interactive MCP Apps

Open live viewers and run scenarios in supported hosts.

view_credit_graphticker

Open the interactive credit scorecard (rating cascade + scenarios) and return a slim summary to the model.

get_stress_catalogcatalog_id?

Read the deterministic stress-scenario catalog rules. Omit catalog_id for all entries.

compute_credit_graph_scenarioticker, name, impacts, trigger?, narrative?, probability?

Apply host-reasoned impacts in memory, recompute the rating, and render the stressed scenario. Read-only — never writes to storage.

view_equity_graphticker

Open the interactive Research Graph (subjects → insights → convictions evidence funnel).

MCP Apps

Interactive viewers

In hosts that support MCP Apps, SigmaScribe renders fully interactive UIs inline: a credit scorecard showing the rating cascade, modifiers, ratios, and a scenarios tab, and an equity Research Graph that walks the evidence funnel from subjects to convictions. The credit scorecard also supports host-reasoned stress scenarios via compute_credit_graph_scenario, which recomputes the rating in memory without ever writing to storage. Standard tools work in every MCP client; the interactive viewers appear where the host supports them.

Try it

Example prompts

A typical credit analyst session, from coverage to a stressed rating:

  1. 1“Which issuers do you have credit coverage for?”
  2. 2“Give me the credit profile and current rating for Boeing (BA).”
  3. 3“What ratios and modifiers are driving Boeing’s rating?”
  4. 4“Search Boeing’s latest 10-K for leverage and liquidity commentary.”
  5. 5“Stress test a demand downturn on Boeing and show the notch impact.”
  6. 6“Open the interactive scorecard so I can explore the full cascade.”

Equity research follows the evidence funnel:

“Which tickers have an equity research graph?”
“Open the research graph for MSFT and summarize the top convictions.”
“What assumptions underpin the bull case, and where are the open gaps?”