AINumbers.co Crypto Tax API
The crypto-tax API from AINumbers.co — 1 operation(s) for crypto-tax.
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OpenAPI Specification
openapi: 3.2.0
info:
title: AINumbers.co Fintech Intelligence Suite Crypto Tax 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: crypto-tax
paths:
/v1/tools/crypto_cost_basis_gain_calculator:
post:
operationId: crypto_cost_basis_gain_calculator
summary: Crypto Cost Basis & Gain Calculator
description: 'Compute cost basis and realized gain/loss per disposal using FIFO, LIFO, HIFO, or specific-identification lot matching. Short/long-term split at 12-month threshold (IRC §1222). Per-wallet basis tracking as required for US taxpayers from 2025 (IRS Rev. Proc. 2024-28). Feeds IRS Form 1099-DA and CARF/DAC8 basis reporting. Tier 1 Policy Mandate + Tier 2 gain/loss schedule CSV. Client-side. Works offline. Zero PII.
**Tool URL:** https://ainumbers.co/tools/466-crypto-cost-basis-gain-calculator.html
**AP2/Policy Mandate export:** yes'
tags:
- crypto-tax
requestBody:
required: true
content:
application/json:
schema:
type: object
properties:
method:
type: string
enum:
- FIFO
- LIFO
- HIFO
- spec_id
description: 'Lot-matching method: FIFO=first-in-first-out; LIFO=last-in; HIFO=highest-cost-first; spec_id=taxpayer designates each lot'
wallet_by_wallet:
type: boolean
description: Restrict lot matching to same wallet (required for US from 2025)
lots:
type: array
items:
type: object
properties:
lot_id:
type: string
asset:
type: string
wallet:
type: string
date_acquired:
type: string
description: YYYY-MM-DD
qty:
type: number
cost_usd:
type: number
description: Acquisition lots
disposals:
type: array
items:
type: object
properties:
disposal_id:
type: string
asset:
type: string
wallet:
type: string
date_disposed:
type: string
description: YYYY-MM-DD
qty:
type: number
proceeds_usd:
type: number
spec_lot_id:
type: string
description: Required for spec_id method
description: Disposals to match
required:
- method
- lots
- disposals
responses:
'200':
description: Successful tool execution result
content:
application/json:
schema:
type: object
properties:
total_proceeds_usd:
type: number
total_basis_usd:
type: number
net_gain_loss_usd:
type: number
short_term_gain_loss_usd:
type: number
long_term_gain_loss_usd:
type: number
gain_loss_schedule:
type: array
items:
type: object
properties:
disposal_id:
type: string
proceeds_usd:
type: number
basis_usd:
type: number
gain_loss_usd:
type: number
term:
type: string
enum:
- short
- long
- unknown
date_acquired:
type: string
date_disposed:
type: string
x-mcp-tool-name: crypto_cost_basis_gain_calculator
x-tool-url: https://ainumbers.co/tools/466-crypto-cost-basis-gain-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.