generated: '2026-09-11'
method: searched
source: >-
  MCP registry (registry.modelcontextprotocol.io, io.github.15998194110/delta-witness),
  npm (delta-witness-mcp), and the first-party monorepo
  github.com/15998194110/delta-witness/packages/mcp-server.
name: DELTA Witness MCP
description: >-
  First-party MCP server exposing the paid DELTA Witness Capture and Guard
  (preflight) tools for public-source observation before autonomous actions.
deployment:
  mode: local-stdio
  install: npx -y delta-witness-mcp@0.7.0
  package: https://www.npmjs.com/package/delta-witness-mcp
  auth: unknown
  verified: searched
  note: >-
    No hosted/remote MCP HTTP endpoint is published; the server is distributed as
    an npm package launched over stdio. A human must install and run it before an
    agent can reach it. Registered active in the MCP registry as
    io.github.15998194110/delta-witness, npm delta-witness-mcp v0.7.0
    (published 2026-09-06, transport: stdio). The underlying paid operations
    still require x402 USDC-on-Base settlement per call.
registry:
  mcp_registry: io.github.15998194110/delta-witness
  status: active
  version: 0.7.0
tools:
  - name: capture
    description: >-
      Observe a public webpage independently and return timestamped proof
      metadata and content hashes.
    backing_operation: browserVerificationPageStateProof
    price_usd: 1
  - name: preflight
    description: >-
      Observe a public source and deterministically compare it with supplied
      expectations or a prior DELTA proof before an autonomous action.
    backing_operation: preflightAutonomousAction
    price_usd: 5