Plumbline — a trust layer for LLM answers
connectsplumbline.lattice-sys.com
Every figure re-checked against SQL-computed facts; unsupported questions refused with the reason.
https://plumbline.lattice-sys.com/mcp/demoWebsiteOAuthMCP 2025-11-25v0.2.0last checked 24 Aug 2026spoke MCP on 2 of 2 checks (30 days)initialize in 903 msHow to authenticate
Checked against the endpoint by our probe on 24 Aug 2026. These are the capabilities the server advertises, not a prediction about any particular client.
| Scheme | OAuth |
|---|---|
| Issuer | https://plumbline.lattice-sys.com |
| Dynamic client registration | ✓Advertised (RFC 7591) |
| Client ID Metadata Document | ✕Not advertised |
| PKCE | ✓S256 |
| Grant types | authorization_code, refresh_token |
| Scopes | mcp |
| Protected-resource metadata | ✓Published (RFC 9728) |
| Anonymous access | Handshake succeeds; 18 tools listable |
What the probe found
A cross-origin preflight came back without Access-Control-Allow-Origin, so the endpoint is reachable from native clients only — code running in a web page is stopped by the browser before a request is ever sent.
The server exposes a public surface before authorization: ask_prepare, ask_result, ask_submit_draft, compare_departments, cross_check, describe_fact_capabilities, find_payroll_anomalies, get_ai_act_transparency, get_answer_queries, get_evidence_document, get_manager_chain, query_fact, run_code, run_sql, search_docs, search_employee, summarize_benefits, trust_finalize.
Tools
Contract history
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Status badge
Status for a README, from the last probe — cached an hour, so up to seven hours behind the endpoint. Links back to this page.
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