AINumbers MCP Apps Server

Live endpoint: https://mcp.ainumbers.co/mcp (streamable HTTP, no auth)

An MCP Apps (SEP-1865) server that renders AINumbers.co fintech tools as interactive widgets inside Claude, ChatGPT, M365 Copilot, VS Code, and any other MCP Apps host. Published in the Official MCP Registry as co.ainumbers/tools.

Tools

Fifteen flagship tools render as widgets — the actual single-file AINumbers tool, served as a text/html;profile=mcp-app resource, driven by the AIN Bridge (prefill → run → Policy Mandate export):

MCP tool	AINumbers tool
baas_provider_comparator	T152 BaaS Provider Comparator
validate_ap2_mcp_policy	T320 AP2 MCP Policy Validator & Bridge
build_google_ap2_mandate	T285 Google AP2 Checkout/Payment Mandate Builder
score_mcp_readiness	T288 MCP Developer Readiness Scorecard
agentic_mandate_sandbox	RBE-06 Agentic Mandate Sandbox
customer_risk_rating	T110 Customer Risk Rating Engine
ap2_aml_mandate_builder	T131 AP2 AML Mandate Builder
lint_mcp_tool_definition	T274 MCP Tool-Definition Linter
validate_mcp_server_json	T275 MCP server.json Validator
compare_agentic_payment_protocols	T276 Agentic Payments Protocol Comparator
decode_x402_payment	T277 x402 Decoder & 402 Flow Simulator
audit_mcp_oauth	T278 MCP OAuth 2.1 Authorization Auditor
scan_tool_poisoning	T282 MCP Tool-Poisoning Scanner
validate_a2a_agent_card	T283 A2A Agent Card Validator
inspect_visa_tap_signature	T286 Visa TAP Signature Inspector

Plus list_ainumbers_tools — catalog search across all 420+ tools, returning deep-links; prefill-enabled tools accept #in=<base64url(JSON of {element_id: value})>[&run=1] for one-click invocation.

All 16 tools are read-only (readOnlyHint: true), no account, no auth, zero PII — inputs are processed transiently and never stored.

Connect it

• Claude: Settings → Connectors → Add custom connector → https://mcp.ainumbers.co/mcp
• Inspector: npx @modelcontextprotocol/inspector → Streamable HTTP → same URL
• Production runs on Cloudflare Workers (/healthz reports runtime: cloudflare-workers) — no cold starts.

Develop

npm install
node generate.mjs   # re-vendor tool HTML + manifests + catalog from ../repo into ./data
npm start           # http://localhost:3300/mcp  (+ /healthz) — Node/express variant (server.mjs)
npx wrangler deploy # deploy the Cloudflare Workers variant (worker.mjs)

pilot.mjs is the single source of truth for the widget tool set. After changing any pilot tool in the AINumbers repo, run node generate.mjs, commit data/, and push; run npx wrangler deploy to update production.

Docs: ainumbers.co/mcp.html (privacy, terms, support).

All tool content is client-side, deterministic, zero PII — © Post Oak Labs, CC BY 4.0. See README-SPEC.md for architecture and history.