diff --git a/build/agents/mpp.mdx b/build/agents/mpp.mdx
index 49c13e612..e28cb1129 100644
--- a/build/agents/mpp.mdx
+++ b/build/agents/mpp.mdx
@@ -46,7 +46,7 @@ submits the transaction and pays the gas; it never custodies funds.
 MPP settlement on Celo runs through the same hosted facilitator as x402, which
 charges a small credit per transaction. Get an API key (a human does this once):
 
-1. Open [x402.celo.org](https://x402.celo.org) and connect an EVM wallet.
+1. Open [x402.celo.org](https://x402.celo.org) and connect an [EVM](https://ethereum.org/developers/docs/evm/) wallet.
 2. Click **Create API key** and sign the message (no gas, no transaction).
 3. Copy the key (shown once) — it looks like `x402_...`.
 4. Set it as `X402_API_KEY` in your project.
@@ -168,7 +168,7 @@ npm run buyer          # terminal 2 — pays and prints the settlement tx
 | USDC | Celo mainnet | `0xcebA9300f2b948710d2653dD7B07f33A8B32118C` |
 | USDC | Celo Sepolia | `0x01C5C0122039549AD1493B8220cABEdD739BC44E` |
 
-Both are 6-decimal and support gasless EIP-3009 transfers.
+Both are 6-decimal and support gasless [EIP-3009](https://eips.ethereum.org/EIPS/eip-3009) transfers.
 
 ## Resources
 
diff --git a/build/agents/x402.mdx b/build/agents/x402.mdx
index fc810c6c5..3d8740999 100644
--- a/build/agents/x402.mdx
+++ b/build/agents/x402.mdx
@@ -12,7 +12,7 @@ x402 is an open protocol for internet-native payments that activates the HTTP 40
 - **Instant Settlement**: Sub-second on Celo, compared to days with traditional payments
 - **Zero Protocol Fees**: Only pay nominal blockchain gas fees
 - **Agent-First**: Designed for autonomous AI agent transactions
-- **Chain Agnostic**: Supports 170+ EVM chains including Celo
+- **Chain Agnostic**: Supports 170+ [EVM](https://ethereum.org/developers/docs/evm/) chains including Celo
 
 ## Why x402?
 
@@ -63,7 +63,7 @@ sequenceDiagram
 
 ## Get Started with the Celo Facilitator
 
-Celo runs its own hosted x402 facilitator, built on the open-source [`x402-rs`](https://github.com/x402-rs/x402-rs) implementation. It is the recommended default for accepting x402 payments on Celo. It accepts **USDC** and **USDT** on Celo via the gasless EIP-3009 `transferWithAuthorization` scheme — the buyer signs an authorization off-chain, and the facilitator submits it on-chain and pays the gas itself. The facilitator never custodies funds: `transferWithAuthorization` moves tokens directly payer → payee inside the token contract.
+Celo runs its own hosted x402 facilitator, built on the open-source [`x402-rs`](https://github.com/x402-rs/x402-rs) implementation. It is the recommended default for accepting x402 payments on Celo. It accepts **USDC** and **USDT** on Celo via the gasless [EIP-3009](https://eips.ethereum.org/EIPS/eip-3009) `transferWithAuthorization` scheme — the buyer signs an authorization off-chain, and the facilitator submits it on-chain and pays the gas itself. The facilitator never custodies funds: `transferWithAuthorization` moves tokens directly payer → payee inside the token contract.
 
 Two hosts are involved, and they are not interchangeable: