New York, United States – February 25, 2026 – Mintfunnel, a Coinbound Company / InsumerAPI delivers privacy-preserving proof of token and NFT ownership at $0.04 per verification — with triple-SDK agent tooling (MCP, LangChain, GPT Actions) and zero blockchain knowledge required for merchants
InsumerAPI Launches Privacy-Preserving On-Chain Verification for Token-Gated Commerce
The Insumer Model™, the infrastructure platform that turns token holders into recognized customers with real-world perks, today announced InsumerAPI — a RESTful on-chain verification API that delivers cryptographically signed boolean proofs of token and NFT ownership without ever exposing wallet addresses, balances, or transaction histories.
Built by Douglas Borthwick — a Wall Street veteran with 30+ years at Morgan Stanley, Merrill Lynch, and Standard Chartered, and a pioneer in SEC-registered security token offerings — InsumerAPI is the sixth application in a complete production ecosystem that already includes:
- InsumerPass (customer verification)
- InsumerScanner (merchant POS)
- InsumerDashboard (business configuration)
- InsumerRegistry (open token database)
- InsumerExtension (Chrome browser integration)
What InsumerAPI Does
A single POST endpoint (/v1/attest) checks 1–10 conditions against a wallet across 31 blockchains and returns only signed booleans — met: true or met: false. The actual balance is never revealed.
Every response carries an ECDSA P-256 signature that downstream systems — AI agents, merchants, auditors — can verify offline without re-querying the blockchain or repeatedly trusting the service.
Merchant Economics
For merchants, the economics are decisive:
- On-chain verification costs $0.02–$0.04 per scan
- Compared to $1–$5+ per click on Google or Meta ads
Merchants onboard with zero blockchain knowledge, configure discount tiers through a dashboard or API, and integrate with existing payment processors such as:
- Stripe
- Square
- Clover
Customers pay in dollars. Merchants receive dollars. Token ownership simply unlocks the discount.
The First Fully Autonomous Agent Commerce Loop
InsumerAPI is the only on-chain verification API where an AI agent can complete the entire merchant lifecycle autonomously — from API discovery to directory listing — with no human in the loop.
An agent can:
- Read standard machine-readable files (llms.txt, OpenAPI spec, ai-plugin.json)
- Create an API key
- Browse the merchant directory
- Verify token holdings
- Generate signed discount codes
- Onboard new merchants
- Verify domain ownership
- Purchase credits with USDC on supported chains
- Publish to the public directory
Every step is authenticated and cryptographically signed.
Triple-SDK Agent Tooling
Three published SDKs support autonomous AI agent integration:
MCP Server
- Published to npm (mcp-server-insumer)
- Listed in the Official MCP Registry
- 16 tools covering all API endpoints
LangChain Integration
- Published to PyPI (langchain-insumer v0.1.2)
- Designed for Python AI agent frameworks
- 6 tools plus HTTP wrapper
GPT Actions
- OpenAI function-calling integration via OpenAPI spec
- InsumerAPI Verify is live in the ChatGPT GPT Store
- Enables conversational verification of holdings for discounts or eligibility — no coding required
No other Web3 MCP server, LangChain package, or GPT action in the market focuses on token-gated commerce, merchant verification, or merchant onboarding. The triple-SDK offering is unique in the space.
Founder Quote
“The missing piece in token-gated commerce was never the blockchain — it was the bridge to the real world,” said Douglas Borthwick, Founder of The Insumer Model™.
“An AI agent can now go from zero to a fully onboarded, domain-verified, directory-listed merchant without a single human touching a keyboard. Meanwhile, a SHIB holder walks into a coffee shop that recognizes SHIB holders, taps their phone, and gets 10% off — without the merchant ever knowing details of their wallet other than that they own enough SHIB to meet a tier threshold. That’s the insumer economy.”
Pricing and Access
InsumerAPI offers:
- Free Tier: 10 credits + 100 daily reads
- Pay-Per-Use: $0.04 per credit via USDC
- Pro Plan: $29/month (100 credits + 10,000 daily reads)
- Enterprise Plan: $99/month (500 credits + 100,000 daily reads)
Merchants join free with 100 verification credits included.
Links
- Developer documentation: https://insumermodel.com/developers
- Try the GPT: https://chatgpt.com/g/g-699c5e43ce2481918b3f1e7f144c8a49-insumerapi-verify
- MCP Server: https://www.npmjs.com/package/mcp-server-insumer
- LangChain: https://pypi.org/project/langchain-insumer/
- Full platform and free book: https://insumermodel.com
About The Insumer Model™
The Insumer Model™ provides privacy-preserving on-chain verification infrastructure for token-gated commerce. The platform enables businesses to recognize token and NFT holders with real-world discounts across 31 blockchains — no crypto payments, no wallet exposure, no data risk.
Built by Douglas Borthwick, drawing from 30+ years in finance and pioneering work in tokenized securities, the platform bridges digital asset ownership to everyday commerce through six connected applications and a developer API with triple-SDK agent tooling.
Media Contact
Douglas C. Borthwick
Email: press@insumermodel.com
X: @theinsumermodel
Website: https://insumermodel.com
Disclaimer: This is a sponsored press release for informational purposes only. It does not reflect the views of Times Tabloid, nor is it intended to be used as legal, tax, investment, or financial advice. Times Tabloid is not responsible for any financial losses.
