feat(payments): add interactive Squid funding to payments fund

README.md

@@ -205,6 +205,21 @@ filecoin-pin data-set <dataset-id>
 filecoin-pin add myfile.txt --network calibration
 ```
 
+### Fund from another EVM chain
+
+On Filecoin Mainnet, interactive `payments fund` can use [Squid](documentation/glossary.md#squid) when the owner wallet is short of FIL for gas or USDFC for the requested deposit. It supports Filecoin, Arbitrum, Ethereum, Base, Optimism, Polygon, Avalanche, and BNB Chain, and accepts `native`, a token address, or an unambiguous token symbol from Squid's current catalog.
+
+```bash
+export SQUID_INTEGRATOR_ID=your-integrator-id
+filecoin-pin payments fund --days 30 \
+  --from-chain arbitrum \
+  --from-token USDC \
+  --max-source-amount 10 \
+  --source-rpc-url https://your-arbitrum-rpc.example
+```
+
+The same private key must control the wallet on both chains. Filecoin Pin shows the planned source spend and asks for confirmation before signing. If the process is interrupted, the next attempt prints the path of a pending marker; verify both chains manually before deleting that file and retrying. Calibration, devnet, session keys, and non-interactive acquisition are not supported.
+
 For detailed guides, see:
 - **CLI**: [Complete CLI walkthrough](https://docs.filecoin.io/builder-cookbook/filecoin-pin/filecoin-pin-cli)
 - **GitHub Action**: [CI/CD integration guide](https://docs.filecoin.io/builder-cookbook/filecoin-pin/github-action)
@@ -275,6 +290,9 @@ RPC_URL=wss://...              # Filecoin RPC endpoint (overrides NETWORK if spe
                                # Mainnet: wss://wss.node.glif.io/apigw/lotus/rpc/v1
                                # Calibration: wss://wss.calibration.node.glif.io/apigw/lotus/rpc/v1
 
+# Optional - interactive Mainnet funding through Squid
+SQUID_INTEGRATOR_ID=...        # Squid-issued integration identifier
+
 # Optional for Pinning Server Daemon
 ACCESS_TOKEN=...               # Bearer token required on all API requests except GET /
 ALLOW_NO_AUTH=true             # Start without a token, serving all requests unauthenticated (not recommended)

documentation/glossary.md

@@ -237,6 +237,9 @@ Session keys require specific permissions (such as CREATE_DATA_SET and ADD_PIECE
 
 Note that the filecoin-pin CLI's `--session-key` flag (and `SESSION_KEY` environment variable) expect the session key's **private key** — the `SESSION_KEY` value printed by `filecoin-pin session create` or `filecoin-pin session generate` — not the session address. The (public) session address is only used when authorizing or revoking: `filecoin-pin session authorize <session-address>` and `filecoin-pin session revoke <session-address>`.
 
+## Squid
+
+Squid is the cross-chain routing service [Filecoin Pin](#filecoin-pin) can use to acquire FIL or [USDFC](#usdfc) missing from a Filecoin Mainnet wallet during interactive funding. Supported tokens and available routes come from Squid at command time; see the [Squid API documentation](https://docs.squidrouter.com/api).
 
 
 ## Standard IPFS Tooling

package.json

@@ -152,6 +152,7 @@
     "picocolors": "^1.1.1",
     "pino": "^10.3.1",
     "semver": "^7.7.4",
+    "squid-evm-funding": "github:snissn/squid-evm-funding#v0.1.0",
     "varint": "^6.0.0",
     "viem": "^2.48.3"
   },

pnpm-workspace.yaml

@@ -8,3 +8,4 @@ onlyBuiltDependencies:
   - esbuild
   - node-datachannel
   - playwright
+  - squid-evm-funding

src/commands/payments.ts

@@ -6,7 +6,7 @@ import { runInteractiveSetup } from '../payments/interactive.js'
 import { showPaymentStatus } from '../payments/status.js'
 import type { FundOptions, PaymentSetupOptions } from '../payments/types.js'
 import { runWithdraw } from '../payments/withdraw.js'
-import { addAuthOptions } from '../utils/cli-options.js'
+import { addAuthOptions, addFundingSourceOptions } from '../utils/cli-options.js'
 
 export const paymentsCommand = new Command('payments').description(
   'Manage storage payments (required before your first upload)'
@@ -71,6 +71,7 @@ const fundCommand = new Command('fund')
   })
 
 addAuthOptions(fundCommand)
+addFundingSourceOptions(fundCommand)
 paymentsCommand.addCommand(fundCommand)
 
 // Withdraw command

src/payments/fund.ts

@@ -7,27 +7,31 @@
 import { confirm, isCancel } from '@clack/prompts'
 import type { Synapse } from '@filoz/synapse-sdk'
 import pc from 'picocolors'
-import { parseUnits } from 'viem'
+import { formatUnits, parseUnits } from 'viem'
 import { CliFatal, CliIncomplete, isCliFatal, isCliIncomplete, setIncompleteExitCode } from '../common/cli-errors.js'
 import { MIN_RUNWAY_DAYS } from '../common/constants.js'
 import { resolveIpfsIndexedMetadata } from '../core/metadata/index.js'
 import {
+  calculateFilecoinPayFundingPlan,
   checkUSDFCBalance,
   clampDepositToLimit,
   DEFAULT_LOCKUP_DAYS,
   depositUSDFC,
   executeFilecoinPayFunding,
+  getPaymentStatus,
+  MIN_FIL_FOR_GAS,
   planFilecoinPayFunding,
   toStorageRunwaySummary,
   withdrawUSDFC,
 } from '../core/payments/index.js'
-import { initializeSynapse } from '../core/synapse/index.js'
+import { getClientAddress, initializeSynapse } from '../core/synapse/index.js'
 import { formatUSDFC } from '../core/utils/format.js'
 import { formatRunwaySummary } from '../core/utils/index.js'
 import { getCLILogger, parseCLIAuth } from '../utils/cli-auth.js'
 import type { Spinner } from '../utils/cli-helpers.js'
 import { cancel, createSpinner, intro, isInteractive, outro } from '../utils/cli-helpers.js'
 import { isTTY, log } from '../utils/cli-logger.js'
+import { acquirePaymentShortfalls, validateFundingSourceOptions } from './squid-funding.js'
 import type { AutoFundOptions, FundingAdjustmentResult, FundOptions } from './types.js'
 
 // Helper: confirm/warn or bail when target implies < lockup-days runway
@@ -245,12 +249,13 @@ export async function runFund(options: FundOptions): Promise<void> {
 
   spinner.start('Connecting...')
   try {
+    const sourceRequested = validateFundingSourceOptions(options)
+
     // Parse and validate authentication
     const authConfig = parseCLIAuth(options)
 
     const logger = getCLILogger()
     const synapse = await initializeSynapse(authConfig, logger)
-
     spinner.stop(`${pc.green('✓')} Connected`)
 
     const targetDays: number = hasDays ? Number(options.days) : 0
@@ -265,14 +270,50 @@ export async function runFund(options: FundOptions): Promise<void> {
       throw new Error(`Invalid --amount '${options.amount}'`)
     }
 
-    spinner.start('Calculating funding plan...')
-    const planResult = await planFilecoinPayFunding({
-      synapse,
+    const planOptions = {
       targetRunwayDays: hasDays ? targetDays : undefined,
       targetDeposit: hasAmount ? targetDeposit : undefined,
       mode: options.mode ?? 'exact',
       allowWithdraw: options.mode !== 'minimum',
-    })
+    } as const
+
+    spinner.start('Calculating funding plan...')
+    if (sourceRequested) {
+      const [status, accountSummary] = await Promise.all([
+        getPaymentStatus(synapse),
+        synapse.payments.accountSummary({}),
+      ])
+      const preview = calculateFilecoinPayFundingPlan({ status, accountSummary, ...planOptions })
+      const filShortfall =
+        preview.delta !== 0n && status.filBalance < MIN_FIL_FOR_GAS ? MIN_FIL_FOR_GAS - status.filBalance : 0n
+      const usdfcShortfall = preview.delta > 0n ? (preview.walletShortfall ?? 0n) : 0n
+      if (filShortfall > 0n || usdfcShortfall > 0n) {
+        if (!isInteractive()) throw new Error('Squid source acquisition requires an interactive terminal')
+        await acquirePaymentShortfalls({
+          synapse,
+          owner: getClientAddress(synapse),
+          filShortfall,
+          usdfcShortfall,
+          requiredWalletUsdfc: preview.delta > 0n ? preview.delta : 0n,
+          options,
+          confirm: async (summary) => {
+            const spend = summary.quotes.reduce((total, quote) => total + quote.sourceAmount, 0n)
+            const targets = summary.quotes
+              .map(
+                (quote) =>
+                  `${formatUnits(quote.requirement.amount, 18)} ${quote.requirement.id === 'filecoin-fil' ? 'FIL' : 'USDFC'}`
+              )
+              .join(' and ')
+            const proceed = await confirm({
+              message: `Spend ${formatUnits(spend, summary.source.decimals)} ${summary.source.symbol} from ${summary.sourceChainName} via Squid to receive ${targets} on Filecoin (source-token limit: ${formatUnits(summary.maxSourceAmount, summary.source.decimals)} ${summary.source.symbol}; buffered network-fee limit: ${formatUnits(summary.maxNativeFee, summary.nativeCurrency.decimals)} ${summary.nativeCurrency.symbol}; final network fees may vary)?`,
+              initialValue: false,
+            })
+            if (isCancel(proceed) || !proceed) throw new CliIncomplete('Source acquisition cancelled by user')
+          },
+        })
+      }
+    }
+    const planResult = await planFilecoinPayFunding({ synapse, ...planOptions })
     const { plan } = planResult
     spinner.stop(`${pc.green('✓')} Funding plan prepared`)