feat: enable metamask pay in dapps via feature flag

[matthewwalsh0]

Description

Replace the MM_PAY_DAPPS_ENABLED build-time environment variable with a dappsEnabled property under the confirmations_pay remote feature flag (defaults to false).

Changelog

CHANGELOG entry: null

Related issues

Manual testing steps

Screenshots/Recordings

Before

After

Pre-merge author checklist

• I've followed MetaMask Contributor Docs and MetaMask Extension Coding Standards.
• I've completed the PR template to the best of my ability
• I've included tests if applicable
• I've documented my code using JSDoc format if applicable
• I've applied the right labels on the PR (see labeling guidelines). Not required for external contributors.

Pre-merge reviewer checklist

• I've manually tested the PR (e.g. pull and build branch, run the app, test code being changed).
• I confirm that this PR addresses all acceptance criteria described in the ticket it closes and includes the necessary testing evidence such as recordings and or screenshots.

---

Note

Medium Risk
Changes the enablement mechanism for MetaMask Pay in dapps from build-time env to a runtime remote feature flag, which can affect rollout behavior and visibility. Also adjusts confirmation UI/test selectors for PayWithRow, risking minor UI regressions in the confirmations flow.

Overview
MetaMask Pay in dapps is no longer controlled by the build-time MM_PAY_DAPPS_ENABLED env var; TransactionPaySection now renders only when the runtime remote flag confirmations_pay_dapps.enabled is true via the new selector selectIsMetaMaskPayDappsEnabled (defaulting to false), with updated unit tests.

The confirmations UI updates PayWithRow to support a smaller pill-style variant and a default inline row that uses ConfirmInfoAlertRow (with new test ids like pay-with-pill), and CustomAmountInfo now renders the small variant. Dependency @metamask/eip-5792-middleware is pinned/upgraded to 3.0.0 (lockfile updated), and the build config removes the MM_PAY_DAPPS_ENABLED entry.

^{Written by Cursor Bugbot for commit 2836d7f. This will update automatically on new commits. Configure here.}

[metamaskbotv2]

✨ Files requiring CODEOWNER review ✨

✅ @MetaMask/confirmations (8 files, +194 -88)

• 📁 ui/
  • 📁 pages/
    • 📁 confirmations/
      • 📁 components/
        • 📁 info/
          • 📁 custom-amount-info/
            • 📄 custom-amount-info.tsx +3 -1
        • 📁 rows/
          • 📁 pay-with-row/
            • 📄 pay-with-row.stories.tsx +7 -1
            • 📄 pay-with-row.test.tsx +46 -27
            • 📄 pay-with-row.tsx +43 -40
          • 📁 transaction-pay-section/
            • 📄 transaction-pay-section.test.tsx +8 -18
            • 📄 transaction-pay-section.tsx +5 -1
      • 📁 selectors/
        • 📄 feature-flags.test.ts +59 -0
        • 📄 feature-flags.ts +23 -0

[metamaskbotv2]

Builds ready [b52cce4]

• builds: chrome, firefox
• builds (beta): chrome, firefox
• builds (flask): chrome, firefox
• builds (test): chrome, firefox
• builds (test-flask): chrome, firefox
• bundle size: Bundle Size Stats
• interaction-benchmark: Interaction Stats
• storybook: Storybook
• typescript migration: Dashboard
• all artifacts
• bundle viz:

  • background: 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13
  • common: 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18
  • ui: 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20
  • content-script: 0
  • offscreen: 0

⚡ Performance Benchmarks

👆 Interaction Benchmarks

Benchmark	Metric	Mean (ms)	Min (ms)	Max (ms)	Std Dev (ms)	P75 (ms)	P95 (ms)
Load New Account	load_new_account	288	267	308	17	304	308
	total	288	267	308	17	304	308
Confirm Tx	confirm_tx	6054	6016	6122	38	6065	6122
	total	6054	6016	6122	38	6065	6122
Bridge User Actions	bridge_load_page	253	222	307	31	268	307
	bridge_load_asset_picker	218	183	275	34	235	275
	bridge_search_token	726	704	757	20	733	757
	total	1197	1109	1273	70	1272	1273

🔌 Startup Benchmarks

Benchmark	Metric	Mean (ms)	Min (ms)	Max (ms)	Std Dev (ms)	P75 (ms)	P95 (ms)
Standard Home	uiStartup	1475	1234	1797	106	1523	1682
	load	1244	1036	1517	97	1282	1416
	domContentLoaded	1236	1029	1510	96	1276	1409
	domInteractive	29	19	101	18	26	79
	firstPaint	174	73	1434	151	221	372
	backgroundConnect	218	195	310	18	222	252
	firstReactRender	20	13	45	6	20	32
	initialActions	1	0	5	1	2	4
	loadScripts	1035	825	1297	95	1084	1209
	setupStore	13	6	31	5	17	22
	numNetworkReqs	31	22	92	19	22	82
Power User Home	uiStartup	1739	1396	2106	120	1802	1943
	load	1161	1016	1639	134	1164	1533
	domContentLoaded	1146	1007	1607	126	1150	1502
	domInteractive	35	20	177	22	35	63
	firstPaint	182	81	1515	158	229	343
	backgroundConnect	296	264	409	27	301	355
	firstReactRender	23	16	57	7	24	36
	initialActions	1	0	6	1	1	3
	loadScripts	929	805	1401	127	929	1288
	setupStore	15	7	41	5	18	23
	numNetworkReqs	59	38	148	24	57	122

🧭 User Journey Benchmarks

Benchmark	Metric	Mean (ms)	Min (ms)	Max (ms)	Std Dev (ms)	P75 (ms)	P95 (ms)
Onboarding Import Wallet	importWalletToSocialScreen	220	217	224	2	221	224
	srpButtonToSrpForm	98	97	98	1	98	98
	confirmSrpToPwForm	22	21	22	0	22	22
	pwFormToMetricsScreen	16	15	16	0	15	16
	metricsToWalletReadyScreen	17	16	18	1	17	18
	doneButtonToHomeScreen	1225	588	1694	434	1588	1694
	openAccountMenuToAccountListLoaded	7475	7018	8038	395	7848	8038
	total	9014	8975	9060	31	9020	9060
Onboarding New Wallet	createWalletToSocialScreen	219	217	221	2	221	221
	srpButtonToPwForm	107	105	112	3	110	112
	createPwToRecoveryScreen	8	8	8	0	8	8
	skipBackupToMetricsScreen	37	35	38	1	38	38
	agreeButtonToOnboardingSuccess	17	16	17	1	17	17
	doneButtonToAssetList	535	474	695	93	485	695
	total	920	857	1079	92	875	1079
Asset Details	assetClickToPriceChart	35	32	40	3	36	40
	total	35	32	40	3	36	40
Solana Asset Details	assetClickToPriceChart	49	48	49	1	49	49
	total	49	48	49	1	49	49
Import Srp Home	loginToHomeScreen	2119	2086	2185	46	2185	2185
	openAccountMenuAfterLogin	43	36	58	8	47	58
	homeAfterImportWithNewWallet	2305	2034	2605	197	2438	2605
	total	4394	4367	4429	26	4429	4429
Send Transactions	openSendPageFromHome	34	20	48	10	38	48
	selectTokenToSendFormLoaded	20	19	21	1	21	21
	reviewTransactionToConfirmationPage	1025	853	1355	190	1121	1355
	total	1078	911	1422	194	1165	1422
Swap	openSwapPageFromHome	88	39	125	32	113	125
	fetchAndDisplaySwapQuotes	5631	4572	6386	802	6238	6386
	total	5719	4635	6487	832	6363	6487

🌐 Dapp Page Load Benchmarks

Current Commit: b52cce4 | Date: 3/1/2026

📄 Localhost MetaMask Test Dapp

Samples: 100

Summary

• pageLoadTime-> current mean value: 955ms (±38ms) 🟢 | historical mean value: 1.05s ⬇️ (historical data)
• domContentLoaded-> current mean value: 672ms (±35ms) 🟢 | historical mean value: 739ms ⬇️ (historical data)
• firstContentfulPaint-> current mean value: 75ms (±9ms) 🟢 | historical mean value: 83ms ⬇️ (historical data)

📈 Detailed Results

Metric	Mean	Std Dev	Min	Max	P95	P99
pageLoadTime	955ms	38ms	930ms	1.23s	992ms	1.23s
domContentLoaded	672ms	35ms	653ms	932ms	700ms	932ms
firstPaint	75ms	9ms	64ms	148ms	84ms	148ms
firstContentfulPaint	75ms	9ms	64ms	148ms	84ms	148ms
largestContentfulPaint	0ms	0ms	0ms	0ms	0ms	0ms

Bundle size diffs [🚨 Warning! Bundle size has increased!]

• background: 58 Bytes (0%)
• ui: 1.34 KiB (0.02%)
• common: 20 Bytes (0%)

[socket-security]

Review the following changes in direct dependencies. Learn more about Socket for GitHub.

Diff	Package	Supply Chain Security	Vulnerability	Quality	Maintenance	License
	@​metamask/​eip-5792-middleware@​2.1.0 ⏵ 3.0.0			+1

View full report

[sonarqubecloud]

Quality Gate passed

Issues
4 New issues
0 Accepted issues

Measures
0 Security Hotspots
96.9% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud

[metamaskbotv2]

Builds ready [2836d7f]

• builds: chrome, firefox
• builds (beta): chrome, firefox
• builds (flask): chrome, firefox
• builds (test): chrome, firefox
• builds (test-flask): chrome, firefox
• bundle size: Bundle Size Stats
• interaction-benchmark: Interaction Stats
• storybook: Storybook
• typescript migration: Dashboard
• all artifacts
• bundle viz:

  • background: 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13
  • common: 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18
  • ui: 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20
  • content-script: 0
  • offscreen: 0

⚡ Performance Benchmarks

👆 Interaction Benchmarks

Benchmark	Metric	Mean (ms)	Min (ms)	Max (ms)	Std Dev (ms)	P75 (ms)	P95 (ms)
Load New Account	load_new_account	304	266	350	31	325	350
	total	304	266	350	31	325	350
Confirm Tx	confirm_tx	6079	6067	6092	10	6085	6092
	total	6079	6067	6092	10	6085	6092
Bridge User Actions	bridge_load_page	272	254	282	11	279	282
	bridge_load_asset_picker	230	126	302	71	298	302
	bridge_search_token	731	709	745	14	741	745
	total	1241	1114	1403	99	1282	1403

🔌 Startup Benchmarks

Benchmark	Metric	Mean (ms)	Min (ms)	Max (ms)	Std Dev (ms)	P75 (ms)	P95 (ms)
Standard Home	uiStartup	1468	1281	1907	111	1491	1694
	load	1235	1064	1670	98	1267	1413
	domContentLoaded	1228	1058	1661	97	1251	1392
	domInteractive	31	17	100	21	26	88
	firstPaint	172	71	503	90	232	354
	backgroundConnect	221	201	389	21	225	248
	firstReactRender	20	13	50	6	21	33
	initialActions	2	0	11	2	2	5
	loadScripts	1024	854	1448	97	1051	1199
	setupStore	14	7	32	5	17	22
	numNetworkReqs	31	22	96	20	22	84
Power User Home	uiStartup	1742	1441	2201	137	1813	1994
	load	1165	1037	1654	127	1164	1485
	domContentLoaded	1152	1029	1646	126	1151	1480
	domInteractive	36	19	201	26	35	76
	firstPaint	170	67	458	77	238	292
	backgroundConnect	297	268	372	21	306	334
	firstReactRender	22	16	50	6	23	35
	initialActions	1	0	6	1	1	2
	loadScripts	933	824	1423	124	929	1246
	setupStore	15	9	41	5	16	24
	numNetworkReqs	59	39	162	24	57	114

🧭 User Journey Benchmarks

Benchmark	Metric	Mean (ms)	Min (ms)	Max (ms)	Std Dev (ms)	P75 (ms)	P95 (ms)
Onboarding Import Wallet	importWalletToSocialScreen	218	217	220	1	219	220
	srpButtonToSrpForm	92	90	93	1	92	93
	confirmSrpToPwForm	21	21	21	0	21	21
	pwFormToMetricsScreen	15	15	16	0	16	16
	metricsToWalletReadyScreen	17	16	19	1	17	19
	doneButtonToHomeScreen	685	584	800	93	754	800
	openAccountMenuToAccountListLoaded	7313	6645	8029	549	7843	8029
	total	8484	7805	8978	513	8915	8978
Onboarding New Wallet	createWalletToSocialScreen	219	217	221	1	220	221
	srpButtonToPwForm	115	109	122	5	117	122
	createPwToRecoveryScreen	9	9	9	0	9	9
	skipBackupToMetricsScreen	37	37	38	0	38	38
	agreeButtonToOnboardingSuccess	18	16	20	1	18	20
	doneButtonToAssetList	983	470	1348	326	1326	1348
	total	1392	860	1750	326	1720	1750
Asset Details	assetClickToPriceChart	39	38	40	1	40	40
	total	39	38	40	1	40	40
Solana Asset Details	assetClickToPriceChart	45	24	62	17	58	62
	total	45	24	62	17	58	62
Import Srp Home	loginToHomeScreen	2012	1919	2111	75	2080	2111
	openAccountMenuAfterLogin	47	39	54	5	50	54
	homeAfterImportWithNewWallet	2187	2089	2285	70	2201	2285
	total	4308	4154	4558	156	4415	4558
Send Transactions	openSendPageFromHome	28	18	48	13	39	48
	selectTokenToSendFormLoaded	21	21	21	0	21	21
	reviewTransactionToConfirmationPage	860	849	871	8	863	871
	total	904	887	923	14	911	923
Swap	openSwapPageFromHome	100	97	105	3	105	105
	fetchAndDisplaySwapQuotes	5309	4579	6241	758	6227	6241
	total	5409	4677	6345	758	6324	6345

🌐 Dapp Page Load Benchmarks

Current Commit: 2836d7f | Date: 3/2/2026

📄 Localhost MetaMask Test Dapp

Samples: 100

Summary

• pageLoadTime-> current mean value: 1.05s (±78ms) 🟡 | historical mean value: 1.05s ⬆️ (historical data)
• domContentLoaded-> current mean value: 747ms (±87ms) 🟢 | historical mean value: 741ms ⬆️ (historical data)
• firstContentfulPaint-> current mean value: 92ms (±128ms) 🟢 | historical mean value: 82ms ⬆️ (historical data)

📈 Detailed Results

Metric	Mean	Std Dev	Min	Max	P95	P99
pageLoadTime	1.05s	78ms	1.01s	1.44s	1.28s	1.44s
domContentLoaded	747ms	87ms	709ms	1.30s	960ms	1.30s
firstPaint	92ms	128ms	64ms	1.37s	92ms	1.37s
firstContentfulPaint	92ms	128ms	64ms	1.37s	92ms	1.37s
largestContentfulPaint	0ms	0ms	0ms	0ms	0ms	0ms

Bundle size diffs [🚨 Warning! Bundle size has increased!]

• background: 385 Bytes (0.01%)
• ui: 1.8 KiB (0.02%)
• common: 50 Bytes (0%)