Evidence Desk Judge-first WebMCP evidence review
WEBMCP: CHECKING AGENT CLUSTER: UNKNOWN

CASE HX-17 · PROOF BEFORE ACTION

Can an agent prove its answer before you act?

Watch the agent inspect signed evidence, expose the decisive conflict, and stop before the human decision.

THE CONTESTED CLAIM

“Did the vendor provide the required inspection report before acceptance?”

Agent proposes. Human decides. The receipt preserves both.

Copies a self-contained four-tool briefing. Real calls appear in the live record.

13 VERIFIED · 4 WEBMCP TOOLS · HUMAN-ONLY FINAL ACTION

PROVENANCE — LIVE TOOL-CALL RECORD

What the agent did

LIVE
INITIAL Copy the briefing to start a real WebMCP review. Updated now · View receipt trail
    ACCEPTED MAR 14 EX-003 acceptance certificate
    INSPECTED MAR 19 EX-002 signed inspection report
    VERDICT: PENDING REVIEW
    1. 1AGENT INVESTIGATES
      search · inspect · evaluate · propose
    2. 2HUMAN ADJUDICATES
      approve · correct · decline
    3. 3EVIDENCE PRESERVES
      hashes · manifest · local receipt

    PROPOSAL → DECISION

    Decisive evidence

    HUMAN CONTROLLED

    The agent can propose evidence. Only you can pin, remove, or reject it. The initial view stays on the deliberate EX-001 / EX-002 contradiction.

    OPEN THE FULL SIGNED PACKET · 13 EXHIBITS

    Every span below was checked client-side against the signed manifest before display.

    FINAL VERDICT BOUNDARY

    Only you can approve, correct, or decline the agent verdict.

    PRESERVE THE DECISION

    Seal a local, tamper-evident receipt

    Records the human decision, accepted evidence hashes, and the tool-call trail. No network. Not an authoritative legal signature.

    AFTER THE PRIMARY FLOW · ADVERSARIAL PROOF

    Forgery Bench

    Edit a signed exhibit, change one date, and submit the forgery. The manifest comparison catches the changed bytes and quarantines the evidence.

    OPTIONAL · LOAD YOUR OWN CASE

    Bring your own evidence

    Paste plain-text documents in the exhibit format. The browser signs them locally with a keypair generated on this page — nothing is uploaded. Saving a packet writes the local private key into a JSON file on your machine; treat that file as a secret.

    EXHIBIT FORMAT — FULL SPEC + WORKED EXAMPLE 
    One or more EXHIBIT blocks, concatenated in a single paste or .txt file.

  EXHIBIT: EX-101
  TITLE: Vendor Attestation Letter
  [SPAN EX-101-1]
  free text, possibly multiple lines
  [SPAN EX-101-2]
  more text

Rules:
  - EXHIBIT id must match EX-[A-Z0-9-]+ (e.g. EX-101, EX-7B).
  - TITLE is required and non-empty.
  - [SPAN id] starts a span; the following non-empty lines are its text.
  - Span ids must be unique within an exhibit.
  - Hard caps: 20 exhibits, 10 spans per exhibit.

Worked example:

  EXHIBIT: EX-101
  TITLE: Inspection Report IR-2219
  [SPAN EX-101-1]
  MERIDIAN COMPONENTS LTD - Inspection Report IR-2219. Lot HX-17.
  [SPAN EX-101-2]
  Final inspection completed 2026-03-19, prior to acceptance.