Harsh | NGT Chain

Founder, NGT Chain. Building @AgentexecHQ: x402 payment and safety rails for AI agents on @base. Spend caps, gasless UserOps, MCP. Shipping in public.

[Harsh | NGT Chain @harshbuildsx]

Agreed. A static cap that can’t be yanked mid-run is half a control. AgentExec treats the live cap + allowlist as the signer gate, and every payment gets a dry-run before it commits — so the receipt trail starts before the signature, not after. Curious how you’re modeling mid-task lowers on your side.

[Harsh | NGT Chain @harshbuildsx]

Hot take: the first agent that drains a wallet in public will set agentic payments back a year. Caps aren't optional. They're the product. #AIAgents #x402

[Harsh | NGT Chain @harshbuildsx]

@agent67eth Address isn't identity, agreed. Until name-to-verified-profile resolution is standard, a simple allowlist of counterparties the agent may pay catches most of the 'who am I paying' risk at near-zero cost. Identity layer on top, not instead.

[Harsh | NGT Chain @harshbuildsx]

@zdne Great update. ~$15M real x402 volume after stripping wash trades is the number people should quote. Do you track avg ticket size? Feels like most real flow is sub-cent per-call API spend, a very different market than checkout.

[Harsh | NGT Chain @harshbuildsx]

Humans get invoices. Agents get a 402. I'm building for the second one. #x402 #Base

[Harsh | NGT Chain @harshbuildsx]

Hot take: the first agent that drains a wallet in public will set agentic payments back a year. Caps aren't optional. They're the product. #AIAgents #x402

[Harsh | NGT Chain @harshbuildsx]

Agents will make more paid API calls than humans soon. The question isn't if — it's who sets the spend cap when they do. #x402 #AIAgents

[Harsh | NGT Chain @harshbuildsx]

Lesson from this week: the hard part of agent payments isn't the payment. It's knowing when NOT to pay. #AIAgents

[Harsh | NGT Chain @harshbuildsx]

@AstraTradingCo @base @AgentexecHQ @ngtchain Both layers matter. Runtime is fast for every call; onchain is the backstop a compromised agent can't talk past. We're starting with hard caps at sign time. Curious which you'd trust first in production?

[Harsh | NGT Chain @harshbuildsx]

Building two things for AI agents on @base:

@AgentexecHQ keeps agent payments safe with spend caps.
@ngtchain lets agents pay per call with no API keys.

Both shipping in public. Follow along.

[Harsh | NGT Chain @harshbuildsx]

@CoinbaseDev @money2020 Stablecoins for humans at Money20/20, x402 for agents on Base. Same rails, different buyers. Are you seeing more teams ask about agent wallets than a year ago?

[Harsh | NGT Chain @harshbuildsx]

Prediction: within two years, agents will make more paid API calls than humans. Agree or disagree? 👇#x402 #AIAgents

[Harsh | NGT Chain @harshbuildsx]

Saturday night. Still shipping. Two products, one goal: let AI agents pay for things safely 🛠️

[Harsh | NGT Chain @harshbuildsx]

Agents will be the biggest buyers on the internet. Most APIs still can't sell to them.

[Harsh | NGT Chain @harshbuildsx]

@0xshei Agree. An agent can't fill in a card form, but it can sign a message. That's why HTTP 402 plus signed transfers on Base feels native: request, get a price, sign, done. No translator in the middle.

[Harsh | NGT Chain @harshbuildsx]

@0xfairblock @base Private amounts for x402 is a big unlock. If every agent payment is public, competitors can read your API spend and infer your strategy. Curious about the seller side: can a facilitator confirm a payment without seeing the amount?

[Harsh | NGT Chain @harshbuildsx]

@jessepollak "Your limits" is the part that matters. Limits work best when they're enforced below the agent, not in the prompt: hard spend caps, an allowlist of where it can pay, and a dry-run of every tx before it signs. That's the layer we're building at https://t.co/A6CjobMnPQ.

[Harsh | NGT Chain @harshbuildsx]

our agent shouldn't need to hold ETH just to pay for an API call.

On NGT Chain it signs an EIP-3009 TransferWithAuthorization off-chain. Our gas sponsor submits it and pays the gas on @base.

Agent signs. We pay the gas.

https://t.co/4zTkeiypf6

[Harsh | NGT Chain @harshbuildsx]

Building two things for AI agents. @AgentexecHQ keeps agent spending inside hard limits, and @ngtchain lets agents pay per API call with no keys. Both on @base. Building in public, so follow along.