Discovery needs no key. Ratings and market analysis are Pro.
Get an API key
Free tier, no form to fill in. Signing in shares your email address with us — we
store it to create your key and to recognise you if you sign in with another
provider. See our Privacy Policy and
Terms.
openapi: 3.2.0
info:
title: AINumbers.co Fintech Intelligence Suite CRR3 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: CRR3
paths:
/v1/tools/calculate_crr3_output_floor_phase_in:
post:
operationId: calculate_crr3_output_floor_phase_in
summary: CRR3 Output Floor Phase-In Capital Impact Calculator
description: 'Calculate year-by-year CRR3 output floor capital impact as floor ramps 50% to 72.5% 2025-2030.
**Tool URL:** https://ainumbers.co/tools/357-crr3-output-floor-phase-in-calculator.html
**AP2/Policy Mandate export:** yes'
tags:
- CRR3
requestBody:
required: true
content:
application/json:
schema:
type: object
properties:
internal_trea_bn:
type: number
sa_trea_bn:
type: number
cet1_capital_bn:
type: number
required:
- internal_trea_bn
- sa_trea_bn
responses:
'200':
description: Successful tool execution result
content:
application/json:
schema:
type: object
x-mcp-tool-name: calculate_crr3_output_floor_phase_in
x-tool-url: https://ainumbers.co/tools/357-crr3-output-floor-phase-in-calculator.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.