com.lattice-sys.plumbline/mcp

up checked 2026-11-11T06:39:02.914Z

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Publisher-provided title

Plumbline — a trust layer for LLM answers

Publisher-provided description

Every figure re-checked against SQL-computed facts; unsupported questions refused with the reason.

Summary by lookupd

Verifies business answers against SQL-computed facts, refuses unsupported questions, and runs read-only queries over HR and payroll…

Install

Claude Code, remote (streamable-http)

claude mcp add --transport http mcp https://plumbline.lattice-sys.com/mcp/demo

Codex, remote (streamable-http)

codex mcp add mcp --url https://plumbline.lattice-sys.com/mcp/demo

Cursor, remote (streamable-http) → .cursor/mcp.json

{
  "mcpServers": {
    "mcp": {
      "url": "https://plumbline.lattice-sys.com/mcp/demo"
    }
  }
}

Other clients: docs. Or tell your agent: Set up lookupd for me: read https://lookupd.com/agent.md and follow it.

Tools (18 tools)

Publisher-provided text

• ask_prepare BYO step 1 of 2: run the server-side trust plane for a business question (plan, SQL-verified facts, evidence retrieval, answerability gate, prompt composition)
• ask_result Fetch the published verdict for an ask_prepare session (status: pending, published, or unknown). This is the app panel's polling surface, so the verified answer
• ask_submit_draft BYO step 2 of 2: verify the draft you wrote for an ask_prepare prompt. The server runs the SAME post-answer guards the strict path uses (facts presence, tagged
• compare_departments Compare two departments by headcount and compensation. NOTE: internal drafting is disabled on this deployment. If your client supports MCP sampling, this tool a
• cross_check Corroborate a figure you obtained (e.g. from run_sql) against the verified fact store: it re-derives the named value_key from the same SQL the verified pipeline
• describe_fact_capabilities List safe metadata for the registered fact queries available on the server-pinned dataset: IDs, labels, parameters, and result shapes, never SQL. Use this when
• find_payroll_anomalies Surface payroll and deduction anomalies in the latest snapshot. NOTE: internal drafting is disabled on this deployment. If your client supports MCP sampling, th
• get_ai_act_transparency Return the Art. 13 transparency descriptor: intended purpose, capabilities, limitations, human oversight, logging mechanism, and article mapping.
• get_answer_queries Show the SQL behind one answer you already received, addressed by its correlation_id. Returns only the recorded fact queries (id, version, label, SQL, parameter
• get_evidence_document Show ONE retrieved evidence document behind an answer you already received, addressed by that answer's correlation_id plus a document_id from its evidence_docum
• get_manager_chain Return the management/reporting chain for an employee. NOTE: internal drafting is disabled on this deployment. If your client supports MCP sampling, this tool a
• query_fact Execute a registered, versioned read-only fact query against the server-pinned dataset. Provide query_id and version only: SQL is approved by the domain pack, n
• run_code Run YOUR OWN JavaScript in the in-tenant coderunner sandbox with the read-only, snapshot-scoped plumb.query() SDK. No filesystem, environment, or general networ
• run_sql Run YOUR OWN single read-only SELECT/WITH over the virtual snapshot_* relations. The query is statically verified against an allowlist, rewritten to the active
• search_docs Search Plumbline's own product and architecture documentation (how the verification, refusal, and trust layer itself works). Returns ranked, citable doc passage
• search_employee Search the employment fact store for a person and return a grounded, verified answer. NOTE: internal drafting is disabled on this deployment. If your client sup
• summarize_benefits Summarize benefit enrollments, optionally scoped (e.g. a department or plan). NOTE: internal drafting is disabled on this deployment. If your client supports MC
• trust_finalize Return the session's graded trust verdict: the tier (verified / registered-query / generated-sql / corroborated / unverified / conflict / refused), which truste

Details

• Version: 0.1.0
• Transports: streamable-http
• Uptime (7 days): 100%
• Median latency: 1105 ms
• First indexed: 2026-11-01T08:54:49.699Z
• Last seen in registry: 2026-11-01T08:54:49.699Z
• Website: https://plumbline.lattice-sys.com/

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