fix(fund): drop broken Coinbase Onramp URL builder

.claude/CLAUDE.md

@@ -17,14 +17,14 @@ Single-package TypeScript CLI published to npm. Runnable via `npx @agent-score/p
 | `src/keystore.ts` | AES-256-GCM + scrypt encrypted keystore (generic, chain-agnostic) |
 | `src/wallets.ts` | Wallet factory dispatching to chain modules |
 | `src/prompts.ts` | Passphrase input (respects `AGENTSCORE_PAY_PASSPHRASE` env) |
-| `src/constants.ts` | Chain network IDs, USDC addresses, RPC URLs, Coinbase Onramp builder |
+| `src/constants.ts` | Chain network IDs, USDC addresses, RPC URLs |
 | `src/chains/base.ts` | EVM adapter (x402): viem Account, USDC balance, EIP-681 QR URI |
 | `src/chains/solana.ts` | SVM adapter (x402): `@solana/kit` KeyPairSigner, SPL balance, `solana:` URI |
 | `src/chains/tempo.ts` | EVM adapter (MPP): viem Account on chain 4217, USDC.e balance, EIP-681 QR URI |
 | `src/commands/wallet.ts` | `wallet create/import/address/list/remove/export/show-mnemonic` |
 | `src/commands/balance.ts` | `balance` across chains |
 | `src/commands/qr.ts` | `qr` with optional amount |
-| `src/commands/fund.ts` | `fund` — onramp link + QR + balance polling (Tempo testnet uses programmatic mint) |
+| `src/commands/fund.ts` | `fund` — receive QR + balance polling (Tempo testnet uses programmatic mint via tempo_fundAddress) |
 | `src/commands/pay.ts` | `pay <METHOD> <URL>` — routes to `@x402/fetch` (base/solana) or `mppx/client` (tempo) |
 | `src/commands/identity.ts` | `reputation`, `assess`, `sessions create/get`, `credentials create/list/revoke`, `associate-wallet` (wraps `@agent-score/sdk`) |
 | `src/commands/passport.ts` | `passport login/status/logout` — AgentScore Passport (buyer-side identity); stores opc_ at `~/.agentscore/passport.json`, auto-attached on `pay <url>` settle leg |

README.md

@@ -32,7 +32,7 @@ Requires Node 20+ for the npm path. Native single-file binaries (no Node require
 # 1. One-shot init — encrypted keystores on every chain, derived from a single BIP-39 mnemonic
 agentscore-pay init
 
-# 2. Fund one of them (prints Coinbase Onramp URL + QR + polls balance)
+# 2. Fund one of them (prints receive QR + polls balance)
 agentscore-pay fund --chain base --amount 10
 
 # 3. Pay — rail auto-selected from the single funded wallet
@@ -267,7 +267,7 @@ Verbose mode (`-v`) logs rail selection + balances to stderr.
 | `wallet show-mnemonic --danger [--skip-confirm]` | Decrypt + print the stored BIP-39 mnemonic |
 | `balance [--chain c] [--network n]` | USDC balance across chains (mainnet default; `--network testnet` for Base Sepolia / Solana Devnet / Tempo testnet) |
 | `qr --chain c [--amount N] [--network n]` | ASCII QR or EIP-681 / `solana:` URI |
-| `fund --chain c [--amount N] [--network n]` | Onramp URL + QR + balance poll. Default amount is `10` USD (~50-200 typical agent calls). |
+| `fund --chain c [--amount N] [--network n]` | Receive QR + balance poll. Default amount is `10` USD (~50-200 typical agent calls). Send USDC from any wallet, exchange, or fiat onramp; `fund` polls until it lands. |
 | `faucet --chain c` | Print testnet faucet URL(s) for the chain + copy your address to clipboard |
 | `fund-estimate <url> [-X method] [-d body] [-H header]...` | Probe a 402-gated URL and report how many calls your balance covers + top-up suggestion |
 | `check <url> [-X method] [-d body] [-H header]...` | Probe 402 response; show accepted rails without paying |
@@ -425,9 +425,9 @@ The wallet holds USDC only — no ETH or SOL required. x402 (EIP-3009) and MPP T
 
 ### Mainnet
 
-- **Base, Solana** — `agentscore-pay fund --chain base --amount 10` prints a [Coinbase Onramp](https://www.coinbase.com/onramp) URL (card → USDC on your chain) and an ASCII QR. Click the URL, or scan the QR from any mobile wallet with USDC to send yourself a transfer. `fund` polls balance and confirms when the deposit lands. Default amount is `$10` (~50-200 typical agent calls).
-- **Tempo** — Coinbase Onramp does not cover Tempo. Fund by transferring USDC.e (chain 4217) from another Tempo wallet.
-- **From an existing wallet (no onramp)** — `agentscore-pay wallet address --chain base` prints the address; send USDC on Base to it from MetaMask, Rabby, Coinbase Wallet, Phantom, or a CEX withdrawal. Same pattern on Solana + Tempo.
+- **All chains** — `agentscore-pay fund --chain <chain> --amount 10` prints an ASCII QR and your wallet address, then polls balance until the deposit lands. Send USDC from any source: another wallet (MetaMask, Rabby, Coinbase Wallet, Phantom), a CEX withdrawal, or any third-party fiat onramp that supports the destination chain (Coinbase Pay, MoonPay, Transak, Onramper, Stripe Crypto Onramp, etc.). Default amount is `$10` (~50-200 typical agent calls).
+- **Tempo specifics** — most fiat-onramp partners don't cover Tempo (chain 4217) yet. Fund by transferring USDC.e from another Tempo wallet, or via a bridge (LayerZero / Squid / Relay) from Base.
+- **No-frills receive** — `agentscore-pay wallet address --chain base` prints just the address if you already know your funding source.
 
 ### Testnet
 

src/cli.ts

@@ -138,7 +138,7 @@ export function buildCli() {
             description: 'Next steps:',
             commands: [
               { command: 'passport login', description: 'Verify identity once — required for AgentScore-gated merchants. Skipped automatically for unregulated ones. ~30 seconds in browser, no money needed.' },
-              { command: 'fund', options: { chain: true }, description: 'Top up a wallet via Coinbase Onramp + QR' },
+              { command: 'fund', options: { chain: true }, description: 'Print a receive QR + poll for the deposit' },
               { command: 'balance', description: 'Confirm wallet balances' },
               { command: 'discover', description: 'Browse paid services in the x402 + MPP ecosystem' },
             ],
@@ -338,16 +338,16 @@ export function buildCli() {
   // ── fund ────────────────────────────────────────────────────────────────────
   cli.command('fund', {
     description:
-      'Fund the wallet. Base/Solana mainnet: Coinbase Onramp URL + receive QR + balance polling. Tempo testnet: programmatic mint via tempo_fundAddress (free, no signup). Tempo mainnet: receive QR + balance polling.',
-    hint: 'Tempo testnet funds instantly via JSON-RPC — no browser required. Other networks open Coinbase Onramp in your browser.',
+      'Fund the wallet. Mainnet networks: receive QR + balance polling. Tempo testnet: programmatic mint via tempo_fundAddress (free, no signup). Base/Solana testnets: see the `faucet` command.',
+    hint: 'Tempo testnet funds instantly via JSON-RPC. Mainnet networks print a receive QR — send USDC from another wallet, exchange, or fiat onramp; pay polls until it lands.',
     options: z.object({
       chain: chainSchema,
       network: networkSchema,
       name: walletNameSchema,
       amount: z.coerce.number().optional().describe('Target amount in USD (default 10)'),
     }),
     examples: [
-      { options: { chain: 'base', amount: 10 }, description: 'Fund $10 USDC on Base via Coinbase Onramp' },
+      { options: { chain: 'base', amount: 10 }, description: 'Print receive QR for $10 USDC on Base and poll for the deposit' },
       { options: { chain: 'tempo', network: 'testnet' }, description: 'Programmatically mint Tempo testnet stablecoins (free)' },
     ],
     run(c) {

src/commands/agent-guide.ts

@@ -73,7 +73,7 @@ const GUIDE: AgentGuide = {
       command_example: 'agentscore-pay balance --json',
       notes: [
         'Pass --network testnet to check testnet balances (Base Sepolia, Solana devnet, Tempo testnet).',
-        'If a chain is empty, run `agentscore-pay fund --chain <chain>` for an onramp link or testnet faucet.',
+        'If a chain is empty, run `agentscore-pay fund --chain <chain>` for a receive QR (mainnet) or testnet faucet/programmatic mint.',
       ],
     },
     {
@@ -130,12 +130,11 @@ const GUIDE: AgentGuide = {
     },
     {
       step: 'Get MAINNET USDC with `fund`',
-      why: '`fund` walks the user through Coinbase Onramp (Base + Solana mainnet) or prints a receive QR + balance polling (Tempo mainnet has no public onramp).',
+      why: '`fund` prints a receive QR for the wallet address and polls balance until USDC lands. The user funds from any source they prefer (CEX withdrawal, another wallet, fiat onramp).',
       command_example: 'agentscore-pay fund --chain base --json',
       notes: [
         'Tempo TESTNET via `fund` calls the same programmatic mint as `faucet` — free, immediate, no browser. `fund --chain tempo --network testnet` works without prompts.',
-        'Tempo MAINNET via `fund` prints a receive QR; the user has to acquire USDC.e on Tempo via a CEX or bridge themselves (no onramp partner today).',
-        'Base/Solana mainnet `fund` opens Coinbase Onramp — the user completes a card or bank purchase, pay polls until USDC lands in the wallet.',
+        'All mainnet networks behave the same: receive QR + balance poll. The user picks the funding source — CEX, another wallet, or any third-party onramp that supports the destination chain.',
         'Use `fund-estimate <URL>` to compute "how many calls does my current balance cover for this merchant" — useful before deciding whether to top up.',
       ],
     },

src/commands/fund.ts

@@ -2,7 +2,7 @@ import { setTimeout as sleep } from 'timers/promises';
 import * as baseChain from '../chains/base';
 import * as solanaChain from '../chains/solana';
 import * as tempoChain from '../chains/tempo';
-import { onrampUrl, type Chain, type Network } from '../constants';
+import { type Chain, type Network } from '../constants';
 import { loadKeystore } from '../keystore';
 import { DEFAULT_WALLET_NAME } from '../paths';
 
@@ -24,7 +24,6 @@ export interface FundResult {
   address: string;
   amount_usd: number | null;
   status: 'deposit_detected' | 'tempo_testnet_minted' | 'tempo_testnet_mint_pending' | 'timeout';
-  onramp_url?: string | null;
   qr_uri?: string;
   initial_usdc?: string;
   final_usdc?: string;
@@ -86,7 +85,6 @@ export async function fund(input: FundInput): Promise<FundResult> {
     };
   }
 
-  const onramp = network === 'mainnet' ? onrampUrl(input.chain, ks.address, input.amountUsd) : null;
   const uri = buildQrUri(input.chain, ks.address, input.amountUsd, network);
   const initial = await readBalance(input.chain, ks.address, network);
   const deadline = Date.now() + DEFAULT_TIMEOUT_MS;
@@ -101,7 +99,6 @@ export async function fund(input: FundInput): Promise<FundResult> {
         address: ks.address,
         amount_usd: input.amountUsd ?? null,
         status: 'deposit_detected',
-        onramp_url: onramp,
         qr_uri: uri,
         initial_usdc: formatBalance(input.chain, initial),
         final_usdc: formatBalance(input.chain, current),
@@ -116,7 +113,6 @@ export async function fund(input: FundInput): Promise<FundResult> {
     address: ks.address,
     amount_usd: input.amountUsd ?? null,
     status: 'timeout',
-    onramp_url: onramp,
     qr_uri: uri,
     initial_usdc: formatBalance(input.chain, initial),
     final_usdc: formatBalance(input.chain, current),

src/commands/wallet.ts

@@ -1,4 +1,4 @@
-import { onrampUrl, SUPPORTED_CHAINS, type Chain } from '../constants';
+import { SUPPORTED_CHAINS, type Chain } from '../constants';
 import { CliError } from '../errors';
 import { decryptSecret, deleteKeystore, keystoreExists, listWallets, loadKeystore } from '../keystore';
 import { deriveKey, generatePhrase, validatePhrase } from '../mnemonic';
@@ -25,7 +25,6 @@ export interface CreateResult {
   created: boolean;
   reason?: string;
   qr_uri?: string;
-  onramp_url?: string | null;
 }
 
 export interface WalletCreateInput {
@@ -99,7 +98,6 @@ export async function walletCreate(input: WalletCreateInput = {}): Promise<Walle
       keystore: keystorePath(c, name),
       created: true,
       qr_uri: getQrUri(wallet),
-      onramp_url: onrampUrl(c, wallet.address),
     });
   }
   return { created, skipped: existing };
@@ -140,7 +138,6 @@ async function walletCreateMnemonic(chain?: Chain): Promise<WalletCreateResult>
       keystore: keystorePath(c),
       created: true,
       qr_uri: getQrUri(wallet),
-      onramp_url: onrampUrl(c, wallet.address),
     });
   }
   await saveMnemonic(phrase, passphrase, chains);
@@ -238,7 +235,6 @@ export async function walletImportMnemonic(input: WalletImportMnemonicInput): Pr
       keystore: keystorePath(c),
       created: true,
       qr_uri: getQrUri(wallet),
-      onramp_url: onrampUrl(c, wallet.address),
     });
   }
   await saveMnemonic(normalized, passphrase, chains);

src/constants.ts

@@ -58,20 +58,6 @@ export const USDC = {
   },
 } as const;
 
-export function onrampUrl(chain: Chain, address: string, amountUsd?: number): string | null {
-  if (chain === 'tempo') return null;
-  const network = chain === 'base' ? 'base' : 'solana';
-  const asset = 'USDC';
-  const base = 'https://pay.coinbase.com/buy/select-asset';
-  const params = new URLSearchParams({
-    defaultAsset: asset,
-    defaultNetwork: network,
-    addresses: JSON.stringify({ [address]: [network] }),
-  });
-  if (amountUsd && amountUsd > 0) params.set('presetFiatAmount', String(amountUsd));
-  return `${base}?${params.toString()}`;
-}
-
 export type EvmConfig = {
   address: `0x${string}`;
   decimals: number;

tests/constants.test.ts

@@ -1,5 +1,5 @@
 import { describe, expect, it } from 'vitest';
-import { isKnownUSDC, onrampUrl, SUPPORTED_CHAINS, USDC } from '../src/constants';
+import { isKnownUSDC, SUPPORTED_CHAINS, USDC } from '../src/constants';
 
 describe('constants', () => {
   it('supports base, solana, tempo', () => {
@@ -13,27 +13,6 @@ describe('constants', () => {
     expect(USDC.tempo.mainnet.address.toLowerCase()).toBe('0x20c000000000000000000000b9537d11c60e8b50');
   });
 
-  it('onrampUrl returns Coinbase Pay URL for base', () => {
-    const url = onrampUrl('base', '0xABC');
-    expect(url).toContain('pay.coinbase.com');
-    expect(url).toContain('defaultNetwork=base');
-    expect(url).toContain(encodeURIComponent('0xABC'));
-  });
-
-  it('onrampUrl returns Coinbase Pay URL for solana', () => {
-    const url = onrampUrl('solana', '4Nd1mBQtrMJVYVfKf2PJy9NZUZdTAsp7D4xWLs4gDB4T');
-    expect(url).toContain('defaultNetwork=solana');
-  });
-
-  it('onrampUrl returns null for tempo', () => {
-    expect(onrampUrl('tempo', '0xABC')).toBeNull();
-  });
-
-  it('onrampUrl includes amount when provided', () => {
-    const url = onrampUrl('base', '0xABC', 50);
-    expect(url).toContain('presetFiatAmount=50');
-  });
-
   describe('isKnownUSDC', () => {
     it('matches base USDC mainnet + sepolia case-insensitively', () => {
       expect(isKnownUSDC(USDC.base.mainnet.address, 'base')).toBe(true);