Clerkfield MCP Server
Server Configuration
Describes the environment variables required to run the server.
| Name | Required | Description | Default |
|---|---|---|---|
| CLERKFIELD_API_KEY | Yes | Your Clerkfield API key. Required for the local server (npm/Docker); for the remote server the same key is supplied as an 'Authorization: Bearer <your key>' header. | |
| CLERKFIELD_BASE_URL | No | API base URL (default https://clerkfield.com). | https://clerkfield.com |
Instructions
Guidance the server publishes about itself, which clients place ahead of the tool catalog so the model reads it before choosing anything.
Clerkfield verifies U.S. businesses against official state registries and searches UCC lien filings. Results are business records with their official source and date. Clerkfield is not a consumer reporting agency: never use results to decide an individual's eligibility for credit, employment, housing or insurance. Call get_coverage first if you're unsure whether a state is covered.
Capabilities
Features and capabilities supported by this server
Protocol revision2025-11-25
| Capability | Details |
|---|---|
| tools | {
"listChanged": true
} |
Tools
Functions exposed to the LLM to take actions
| Name | Description |
|---|---|
| verify_businessA | Check a U.S. business against the official registry of the state it was formed in. Returns a verdict (pass, review or fail) with flags explaining why (name match, active status, months in business, whether the owner is listed), plus the state's record: legal name, entity id, status, formation date, addresses, registered agent and officers. Covered states: AL, AR, CO, CT, FL, ID, KY, MN, NJ, NM, NY, ND, OR, PA, TX. |
| search_liensA | List UCC financing statements filed against a business (debtor) or filed by a lender (secured party), newest first, with a summary of active, lapsed and terminated filings and the lenders on active filings. Each filing has its file number, dates, status, parties, collateral and later amendments. Covered states: AL, AR, CT, FL, ID, KY, NE, NJ, NM, RI; search by lender in CT, FL, NE, NM, RI. |
| get_coverageB | Which U.S. states each check covers (business check, lien search, search by lender). |
Prompts
Interactive templates invoked by user choice
| Name | Description |
|---|---|
No prompts | |
Resources
Contextual data attached and managed by the client
| Name | Description |
|---|---|
No resources | |
TDQS
Scored across 3 tools
Each tool has a clearly distinct purpose: verifying a business, checking state coverage, and searching liens. The coverage tool is meta-level but does not overlap with the two lookup tools.
All three tools follow the same predictable verb_noun snake_case convention: verify_business, get_coverage, search_liens. There are no naming style deviations.
Three tools is a focused, well-scoped surface for this domain, and each tool earns its place. No tool appears redundant or missing at the count level.
The surface covers the core workflows: business verification, lien search by debtor or lender, and coverage discovery. Minor gaps exist, such as no separate business lookup or batch verification, but agents can work around them.