AINumbers.co rule changes API

openapi: 3.2.0
info:
  title: AINumbers.co Fintech Intelligence Suite rule changes API
  version: 1.0.0
  description: '**1255 fintech intelligence tools** covering ISO 20022, A2A payments, CFPB §1033, EU AI Act, DORA, MiCA, AML/KYC, BaaS, DLT/tokenization, ESG/climate finance, agentic payments (AP2, ACP, x402, Visa TAP, Mastercard Agent Pay), PQC migration, sanctions screening, and OpenChainGraph v0.4 computation chains.


    ## Transport


    > **The live transport is MCP JSON-RPC 2.0 at `https://mcp.ainumbers.co/mcp` — not REST.**

    >

    > This OpenAPI file is a **descriptive data-room artifact** — a machine-readable index of all tools and their input/output schemas. The REST paths (`POST /v1/tools/{name}`) described here are a projection; they become functional only if the optional REST shim (Area 2 Path B) is deployed.

    >

    > To call tools today, connect via the official MCP client SDKs. TypeScript: `@modelcontextprotocol/sdk`. Python: `mcp`.


    ## Architecture


    All tools run **entirely client-side** (browser JavaScript). Zero PII. Zero server calls after page load. Deterministic, reproducible outputs. Licensed CC BY 4.0.


    OpenChainGraph v0.4 compute-binding nodes additionally run **server-side on the MCP Worker** and emit verifiable artifacts with `execution_hash` (WebCrypto SHA-256 over RFC 8785 canonical JSON).'
  contact:
    name: Post Oak Labs
    url: https://postoaklabs.com
    email: tim@postoaklabs.com
  license:
    name: CC BY 4.0
    url: https://creativecommons.org/licenses/by/4.0/
servers:
- url: https://ainumbers.co
  description: Static browser-based tool host (DreamHost). Tools run client-side — no REST gateway is active on this origin. See x-mcp for the live MCP endpoint.
tags:
- name: rule changes
paths:
  /v1/tools/assess_rule_change_impact:
    post:
      operationId: assess_rule_change_impact
      summary: Network Rule Change Impact Assessor
      description: 'Models the estimated impact of 2025–2026 Visa, Mastercard, and NACHA rule changes on a transaction portfolio. Seven embedded rule changes covering CNP authentication, EMV fallback, authorisation optimisation, surcharge updates, NACHA fraud monitoring, and data security enforcement. Outputs volume affected, interchange impact, compliance actions, and timeline.


        **Tool URL:** https://ainumbers.co/tools/230-network-rule-change-impact-assessor.html

        **AP2/Policy Mandate export:** yes'
      tags:
      - rule changes
      requestBody:
        required: true
        content:
          application/json:
            schema:
              type: object
              properties:
                rule_change_id:
                  type: string
                monthly_volume:
                  type: integer
                average_ticket_usd:
                  type: number
                channel_mix:
                  type: string
              required:
              - rule_change_id
              - monthly_volume
              - average_ticket_usd
      responses:
        '200':
          description: Successful tool execution result
          content:
            application/json:
              schema:
                type: object
                properties:
                  rule_change_title:
                    type: string
                  impact_level:
                    type: string
                    enum:
                    - high
                    - medium
                    - low
                  transactions_affected_per_month:
                    type: integer
                  estimated_monthly_impact_usd:
                    type: number
                  estimated_annual_impact_usd:
                    type: number
                  compliance_actions:
                    type: array
                    items:
                      type: string
                  implementation_timeline:
                    type: array
                  ap2_mandate:
                    type: object
      x-mcp-tool-name: assess_rule_change_impact
      x-tool-url: https://ainumbers.co/tools/230-network-rule-change-impact-assessor.html
      x-source: manifest
      x-ap2-export: true
x-mcp:
  transport: MCP JSON-RPC 2.0 (streamable HTTP)
  endpoint: https://mcp.ainumbers.co/mcp
  protocol_version: '2025-11-25'
  authentication: none
  registry: co.ainumbers/tools (official MCP registry)
  note: Connect any MCP-compatible client (Claude, ChatGPT, custom agent) directly to this endpoint. The REST paths in this file are descriptive only — they do not exist on the live server unless the REST shim is deployed.