Tru8 Evidence Research MCP Server

Evidence research for a factual claim or article URL. Submit a claim as text or paste an article URL. URLs are auto-detected and trigger article mode: the pipeline extracts claims from the page and auto-selects up to 5 for evidence research. Tiers (in fallback order): - lookup (~£0.02, instant) — cached prior analysis - consensus (~£0.03, instant) — cross-user aggregate landscape (k≥3 checks) - quick (~£0.07, ~15s) — web search + heuristic classification - full (~£0.15, ~60-90s) — web + specialist APIs, LLM classification, coverage recovery Charges based on tier actually executed, not tier requested. Identical calls within ten minutes return the same check, so a transport retry never runs — or charges — twice. Set max_tier to control maximum spend per call. Output structure: - claims[].claimMap.elements[] — verifiable sub-claims with state (supported/disputed/unresolved) - claims[].claimMap.elements[].evidenceRefs[] — evidence mapped to elements with relationship (supports/challenges/context) and reasoning - claims[].evidence[] — sources classified by tier (primary/reporting/ commentary) and type (data/official/news/analysis/opinion/academic) - claims[].claimMap.orientation — mechanical summary from element states - _meta — execution metadata: executedTier, chargedPence, limitations A run that has not finished after several minutes returns {checkId, status, chargedPence, message} instead of the result: fetch it later with tru8_get_result (free). A run that FAILS raises an error and is not charged. Per-argument guidance lives on the parameters themselves (see the Annotated/Field declarations above), which is where a client can actually read it — a docstring "Args:" block never reaches the tool's inputSchema.

Retrieve a previously submitted check with pre-computed analytics. Returns the full result including a _computed block with tier/type distributions, corroboration groups, diagnostic values, timeline analysis, element state summaries, and per-claim dispositions. Use this over tru8_get_result_raw when you want structured analytics ready for summarisation or comparison without post-processing.

Retrieve a previously submitted check without computed analytics. Returns claims, elements, evidence, and claim maps only. No _computed block. Smaller response payload. Use this when you will compute your own aggregations or only need specific fields from the raw data.