Cobalt Intelligence
Search US business registrations and read Secretary of State filings for a company.
Connects to Cobalt Intelligence to search US business records by company name and pull details from Secretary of State filings. Muse can look up a business, check its registration status, and summarize filing information for due diligence or vendor checks.
Try asking Muse: "Look up the Secretary of State filing for this vendor before I sign the contract."
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Source: Found in the official MCP Registry (io.usefulapi/cobalt-intelligence) · First listed November 7, 2026
Last 24 hours
Each bar is one check, every 15 minutes. Green means it answered. Last checked 3 h ago.
Is it safe to connect?
What Muse can see: It does not ask you to sign in, so it cannot see your accounts. It only sees what Muse sends it from your request.
Before it acts: Read what Muse plans to do before you approve it, and remove the app from Muse when you stop using it.
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How to add it to Muse
Not in Muse's Connectors list yet, but Muse can still use it. Copy the request below and paste it into Muse. Muse asks before it shares anything with the app's site. Meta does not review apps used this way, so only use ones you trust. We tested this in the Muse app on September 24, 2026: Muse used an app's link directly this way and returned a live answer.
https://cobalt-intelligence.usefulapi.io/mcpNot in Muse's Connectors list yet. Muse can still use it: its page gives you a request to paste into Muse.
Also use it in ChatGPT or Claude
Cobalt Intelligence is a remote MCP server, so any assistant that can add a custom connector by link can use it. Same link, same tools.
Add it to ChatGPT
- 1
Open ChatGPT settings
In ChatGPT, open Settings, then Connectors (called Apps & Connectors on some accounts).
- 2
Turn on developer mode
Under Advanced settings, switch on Developer mode. That is what lets you add a connector by link.
- 3
Create the connector
Choose Create, give it a name, paste the link as the MCP server URL, and save. If it needs a sign-in, ChatGPT asks for it here.
- 4
Use it in a chat
Start a chat, open the tools menu, pick the connector, and ask. ChatGPT asks before it runs a tool the first time.
Custom connectors need a paid ChatGPT plan, and on Team, Enterprise and Edu accounts only an admin can add them. Our "Working" label means the server answered us; it cannot tell whether your plan lets you add it. All connectors that work in ChatGPT
Add it to Claude
- 1
Open Claude settings
In Claude, open Settings, then Connectors.
- 2
Add a custom connector
Choose Add custom connector, give it a name, and paste the link.
- 3
Connect and use it
If it needs a sign-in, Claude sends you to it. Then turn the connector on in a chat from the tools menu and ask.
Custom connectors are available on paid Claude plans; on Team and Enterprise accounts an admin may need to add them. Our "Working" label means the server answered us; it cannot tell whether your plan lets you add it. All connectors that work in Claude
https://cobalt-intelligence.usefulapi.io/mcpWhat people ask Muse to do
Technical details: safety screening, tools, response time and recent checks
Response time at the last check: 115ms. Worked in 100% of checks over 30 days.
Screening · November 7, 2026
Screened, no issues found
Screening looks for known threats and hidden instructions at the time of the check, and runs again weekly and whenever the tool list changes. It cannot see the server's code, so only connect what you need and review what Muse asks to do. How screening works.
Tools · 5
cobaltintelligence_list_statesList the state names the other tools accept, from Cobalt's search index. Call this first to pick a valid state. Cobalt API: GET /v1/search/index.cobaltintelligence_search_businessesFind business entities in one state whose name matches search_query. Returns candidate matches; pick one, then call cobaltintelligence_get_business or cobaltintelligence_get_business_by_sos_id. Cobalt API: GET /v1/search/list. Entity records only. Not a consumer report under the cobaltintelligence_get_businessGet the Secretary of State record for one business name in one state. Add city or zip to narrow a common name. A slow search returns a retryId; check it with cobaltintelligence_get_search_result. Cobalt API: GET /v1/search. Entity records only. Not a consumer report under the FCRcobaltintelligence_get_business_by_sos_idGet the Secretary of State record for one filing id (SOS id) in one state. Use the id from cobaltintelligence_search_businesses or a previous record. A slow search returns a retryId. Cobalt API: GET /v1/search?sosId=. Entity records only. Not a consumer report under the FCRA. Do cobaltintelligence_get_search_resultCheck a search that returned a retryId. Makes one call and does not wait. Call again later if the status is still Incomplete. Cobalt API: GET /v1/search?retryId=. Entity records only. Not a consumer report under the FCRA. Do not use it to screen, score or decide on any person's eRecent checks
Link
https://cobalt-intelligence.usefulapi.io/mcpQuestions about Cobalt Intelligence in Muse
How do I connect Cobalt Intelligence to Muse?
Not in Muse's Connectors list yet, but Muse can still use it. Paste this into Muse: "Use Cobalt Intelligence to help me. It is a free service with an MCP server at https://cobalt-intelligence.usefulapi.io/mcp. It does not need an API key. Ask me before you share anything with it." Muse asks before it shares anything with the app's site. Meta does not review apps used this way, so only use ones you trust. We tested this in the Muse app on September 24, 2026: Muse used an app's link directly this way and returned a live answer.
Is Cobalt Intelligence working right now?
At the last check (November 8, 2026, 02:45 UTC) the endpoint was working, answering in 115ms. Over the last 7 days it answered 100% of health checks. It is checked every 15 minutes.
Is Cobalt Intelligence safe to connect to Muse?
It was screened on November 7, 2026 with the result "screened, no issues found". Screening checks the domain against threat feeds and reads the tools for hidden instructions and requests for passwords or card numbers. It cannot see the server's code, so grant only the access you need.
What can Cobalt Intelligence do in Muse?
It exposes 5 tools, including cobaltintelligence_list_states, cobaltintelligence_search_businesses, cobaltintelligence_get_business, cobaltintelligence_get_business_by_sos_id. For example, you could ask Muse: "Look up the Secretary of State filing for this vendor before I sign the contract."
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