Try the bridge

The bridge between real life and blockchain.

20M APIs. Every chain. One gateway. Both directions.

Read the bridge docs Try the playground

Real-world APIs

Stripe
Twilio
Shopify
SendGrid
HubSpot
+ 2,866 more
→
←
MeterCall
Bridge
EIP-712 signed · hot wallet · nonce-protected
→
←

Blockchains

Ethereum
Base
Solana
Arbitrum
Polygon
+ 25 more
20M+
APIs reachable
30+
Chains supported
↔
Both directions
EIP-712
Signed attestations

Two flows. One bridge. Smart contracts reach the real world. Real-world events reach smart contracts. Both are cryptographically attested.

Chain → Real worldYour contract calls a real API.

Your smart contract emits a BridgeCall event. The bridge listener picks it up, routes to the right real-world API, and writes the signed result back on-chain.

// Your contract emits a bridge call.
event BridgeCall(
  bytes32 requestId,
  string  apiSlug,      // e.g. "stripe-replacement"
  bytes   params,       // ABI-encoded args
  address callback
);

// MeterCall calls you back with a signed result.
function fulfill(
  bytes32 requestId,
  bytes   result,
  bytes   sig
) external onlyBridge {
  require(verifier.verify(requestId, result, sig), "bad sig");
  // use the result on-chain
}

Real world → ChainA webhook becomes an attestation.

A real-world event (Stripe charge, Twilio SMS, Shopify order) posts to MeterCall. We verify it, produce an EIP-712 attestation signed by the bridge's hot wallet, and your smart contract consumes it.

// 1) Stripe fires a webhook at MeterCall.
POST /v1/bridge/webhook/stripe-replacement
X-MeterCall-Signature: <hmac>

// 2) MeterCall produces an EIP-712 attestation.
{
  "eip712": {
    "domain": { "name": "MeterCallBridge", "chainId": 8453 },
    "message": {
      "requestId": "0x…",
      "apiSlug":   "stripe-replacement",
      "resultHash": "0x…"
    }
  },
  "signature": "0x…"
}

// 3) Smart contract verifies via BridgeVerifier.
verifier.verifyAttestation(requestId, slug, resultHash, ts, sig);

Use cases Anything an API can do, a smart contract can now trigger. Anything that happens in the real world can now trigger a smart contract.

Smart contract pays a refund via Stripe
DAO sends email receipts via SendGrid
NFT mint triggers a real-world courier via Shippo
DeFi protocol fires SMS alerts via Twilio
On-chain subscription → real-world SaaS activation
Real-world KYC verify → on-chain attestation
Stripe webhook → on-chain event mirror
Sports score oracle (ESPN) feeds prediction markets

Apps already bridging Live MeterCall modules exposed as bridge connectors.

Stripe Bridge
Refunds, charges, payouts on-chain.
↔ both ways
Twilio Bridge
SMS & voice from smart contracts.
↔ both ways
Shopify Bridge
Orders, inventory, fulfillment.
↔ both ways
SendGrid Bridge
Email from chain events.
↔ both ways
HubSpot Bridge
CRM contacts ↔ on-chain identity.
↔ both ways
Airtable Bridge
On-chain triggers write to Airtable.
↔ both ways
OpenAI Bridge
Contracts call GPT, get signed results.
↔ both ways
Anthropic Bridge
Claude in the EVM via attestation.
↔ both ways

Put the real world inside your contracts.

Read the docs. Run the playground. Ship your first bridge call today.

Read the bridge docs Try the playground Browse 2,866 connectors