MEV Protection Tools

MEV Protection evaluated across order-flow privacy in practice, rebate published and reaching the end user's address, inclusion breadth and what happens when your transaction is dropped, and independence and quality of the protection evidence.

16providers tracked

8ranked (methodology v2026.11.1)

12 November 2026Ranking snapshot

22 October 2026oldest read · due 6 Dec

Independent. Evidence-based.We rank with a published method and sourced evidence. No one can pay to rank.How it works

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8 providers match your requirements

Out of 8 ranked providers. 0 excluded.

What this ranks

Ranked here: MEV protection services that route your transactions so that they are protected from MEV.Not ranked here: wallets and DEX aggregators where MEV protection is one feature (CoW Swap and UniswapX, built around it, are ranked on both pages), infrastructure other products build on, and closed services.8 of the 16 assessed are ranked; 8 were turned away by name. Who, and whyRequirements narrow the list; they never change a published ChainChoice Score. How the ranking works

MEV Blocker

How MEV Blocker was chosen

Leads this ranking on Rebate published AND reaching the end user's address

Ethereum RPC endpoint running a backrun-only order flow auction

79 out of 100published score, #1 of all 8 worldwide

Evidence

High

4/4 criteria scored, with 4 dated sources quoted.

Rebate published AND reaching the end user's addressInclusion breadth and what happens when your transaction is dropped

Why it leads

MEV Blocker is 2 points ahead of Flashbots Protect, mainly because it scores higher on its rebate paid to user and its inclusion and censorship.
Best in this ranking on rebate paid to user and inclusion and censorship
Ahead of Flashbots Protect on rebate paid to user (+3.7 points) and inclusion and censorship (+1.2 points)

Tradeoff

Order flow privacy: 4 points below the best in this ranking

Estimated cost for you

From $0 / year

Based on $1,000 monthly volume

How this is calculated

Priced on Taker fee at the monthly volume above for one year, by the same cost model the provider page uses.

Sort by

#ProviderCompare

Original private RPC

77 out of 100

From $0fee read 22 October 2026 · source

Intent-based DEX settling trades in batch...

71 out of 100

$2fee read 22 October 2026 · source

Ethereum block builder

67 out of 100

Not priced

Intent-based routing

60 out of 100

From $0fee read 22 October 2026 · source

Same score, not joint · ordered by weighted total (36.80 against 36.60)

B2B MEV-protection RPC sold to wallets and RPC...

60 out of 100

From $0fee read 22 October 2026 · source

Wallet-native MEV protection

56 out of 100

From $0fee read 22 October 2026 · source

Private relay RPC

50 out of 100

Not priced

Compare providers (0)

See key differences in features, fees, security and more.

Rebate paid to user

Rebate published AND reaching the end user's address

30% of the published criteria weight. Scored 0–10 from the published evidence; the order below is by this criterion, then the published ranking.

Provider	Rebate paid to user (0–10)	ChainChoice Score
MEV Blocker	9	79
Flashbots Protect	7	77
CoW Swap	5	71
UniswapX	4	60
Titan Builder	2	67
Blink (formerly Merkle.io)	2	60
MetaMask Smart Transactions	1	56
bloXroute Protect RPC	1	50

Order flow privacy

Order-flow privacy in practice

30% of the published criteria weight. Scored 0–10 from the published evidence; the order below is by this criterion, then the published ranking.

Provider	Order flow privacy (0–10)	ChainChoice Score
Titan Builder	9	67
Flashbots Protect	6	77
CoW Swap	6	71
MEV Blocker	5	79
Blink (formerly Merkle.io)	5	60
MetaMask Smart Transactions	4	56
bloXroute Protect RPC	3	50
UniswapX	2	60

Inclusion and censorship

Inclusion breadth and what happens when your transaction is dropped

20% of the published criteria weight. Scored 0–10 from the published evidence; the order below is by this criterion, then the published ranking.

Provider	Inclusion and censorship (0–10)	ChainChoice Score
MEV Blocker	7	79
Flashbots Protect	6	77
CoW Swap	6	71
UniswapX	5	60
Blink (formerly Merkle.io)	5	60
MetaMask Smart Transactions	5	56
Titan Builder	4	67
bloXroute Protect RPC	3	50

Evidence independence

Independence and quality of the protection evidence

20% of the published criteria weight. Scored 0–10 from the published evidence; the order below is by this criterion, then the published ranking.

Provider	Evidence independence (0–10)	ChainChoice Score
Flashbots Protect	6	77
MEV Blocker	5	79
CoW Swap	4	71
UniswapX	4	60
Titan Builder	3	67
Blink (formerly Merkle.io)	2	60
MetaMask Smart Transactions	2	56
bloXroute Protect RPC	1	50

All 4 published criteria

Every ranked row’s score on each criterion, in the published order. Choose a column to order by it.

	Provider					ChainChoice Score
1	MEV Blocker	5	9	7	5	79
2	Flashbots Protect	6	7	6	6	77
3	CoW Swap	6	5	6	4	71
4	Titan Builder	9	2	4	3	67
5	UniswapX	2	4	5	4	60
6	Blink (formerly Merkle.io)	5	2	5	2	60
7	MetaMask Smart Transactions	4	1	5	2	56
8	bloXroute Protect RPC	3	1	3	1	50

How this ranking works

How firm the #1 is, the per-criterion arithmetic behind each score, who pays ChainChoice, and which MEV protection were assessed and left out.

One point from changingMEV Blocker leads Flashbots Protect by 2 points

A one-point change on one criterion puts Flashbots Protect first, so read both.

See the arithmetic

Move order-flow privacy in practice — the heaviest criterion that changes it, weighted 30 — by a single point and Flashbots Protect takes first place. Both are worth reading. The published rankings file

Why this score4 published criteria · leads 2 of 4

Published criterionWtScore, and the best hereGap out of 10Pts

Order-flow privacy in practice7.2−454.8

Rebate published AND reaching the end user's address7.2·98.6

Inclusion breadth and what happens when your transaction is dropped4.8·74.5

Independence and quality of the protection evidence4.8−153.2

Σ methodology points21.1/32

Each bar is the score on that criterion’s own 0–10 scale, never rescaled to the pool. The dark line is the best any product here reached on that axis. Wt is the most the criterion can add to the 86-point weighted total. Pts is weight × score × 32; the sum is the methodology score, and each weighted point behind the leader costs 2.6 on the displayed score. how these are weighted

Why it ranks first

Why MEV Blocker leads this category right now

Ethereum RPC endpoint running a backrun-only order flow auction. Strongest on rebate published AND reaching the end user's address (9/10): MEV Blocker pays 90% of the backrun profit a transaction creates to the sender's own address (tx.origin) in the same block. Its homepage shows over 5.5K ETH rebated to users, with the totals linked to a public Dune dashboard. Weakest on order-flow privacy in practice (5/10): The default endpoint shares each unsigned transaction with all permissionlessly connected searchers, mixed with fake transactions. Only the /fullprivacy endpoint keeps a transaction from searchers, and that endpoint pays no rebate. Published price: Free to users: the MEV Blocker docs introduction (docs.mevblocker.io, read 2026-10-22) says MEV Blocker is "free for users to integrate" (worked reading: no user fee, typed as a fee of 0 percent).

Best for

Rebate published AND reaching the end user's address — 9/10

Main tradeoff

It is no longer a CoW DAO product. Special Mechanisms Group, a Consensys subsidiary, acquired MEV Blocker RPC (announced January 2026) and now operates it — so the same corporate parent controls both MEV Blocker (90% to the user) and MetaMask Smart Transactions (no user rebate documented). Separately, the 90% rebate and maximum privacy are mutually exclusive: /fullprivacy pays "No rebate".

Verify before signup

Free to users: the MEV Blocker docs introduction (docs.mevblocker.io, read 22 October 2026) says MEV Blocker is "free for users to integrate" (worked reading: no user fee, typed as a fee of 0 percent). How it works (docs.mevblocker.io/concepts/how-it-works): "MEV Blocker shares transactions with searchers via backrun bundles, returning 90% to the user." Revenue comes from builders: "Builders must pay MEV Blocker fees to access MEV Blocker transaction flow", billed (Fees mechanics page) as "Charge each builder 80% of the realized MEV Blocker value for the blocks they produced." The docs give two different figures for the share that goes back to wallets and other flow originators: "MEV Blocker shares 50% of builder fees with wallet flow originators" (How it works) and "redistributing 90% of builder fees that are attributable to the order flow originator" (Order flow auction).

Recommendation summary

What should decide this category

Do you need the transaction genuinely withheld until inclusion, or is a faster public route acceptable?

Which chain are you swapping on — most protection services are EVM-only, while Jupiter is the default on Solana?

Would you accept slower inclusion in exchange for a genuinely private route?

Quick picks

Strong options in this category

Start with the lead choice first, then use the shortlist only if you still need a challenger or stronger fit for a specific setup.

Best overall

MEV Blocker

Ethereum RPC endpoint running a backrun-only order flow auction

Best for: Rebate published AND reaching the end user's address — 9/10

Order-flow privacy in practice · weight 30%5/10Rebate published AND reaching the end user's address · weight 30%9/10Inclusion breadth and what happens when your transaction is dropped · weight 20%7/10Independence and quality of the protection evidence · weight 20%5/10

Quick pick

Flashbots Protect

Original private RPC, now routed through Flashbots' BuilderNet

Original private RPC, now routed through Flashbots' BuilderNet. Strongest on rebate published AND reaching the end user's address (7/10): Flashbots Protect sends 90% of MEV refunds to tx.origin by default, and payouts can be traced through a public Dune query and a per-recipient RPC method. Refunds apply only to blocks that BuilderNet lands, a minority of Ethereum blocks. Weakest on order-flow privacy in practice (6/10): By default a transaction goes only to the Flashbots block builder, while MEV-Share searchers see its hash and swap-log hints such as the pool and the fact that a swap was made. The ?hint=hash setting withholds those hints; fast mode shares the full unsigned transaction with searchers inside TEEs. Published price: No user fee: the Flashbots Terms of Service (docs.flashbots.net/policies/terms-of-service, read 2026-10-22) state "FLASHBOTS does not charge any fee for the use of Flashbots Services" (worked reading: typed fee 0), while reserving the right to charge one…

Best for: Rebate published AND reaching the end user's address — 7/10

Order-flow privacy in practice · weight 30%6/10Rebate published AND reaching the end user's address · weight 30%7/10Inclusion breadth and what happens when your transaction is dropped · weight 20%6/10Independence and quality of the protection evidence · weight 20%6/10

Quick pick

CoW Swap

Intent-based DEX settling trades in batch auctions via solvers

Intent-based DEX settling trades in batch auctions via solvers. Strongest on order-flow privacy in practice (6/10): CoW Swap orders are signed intents collected off-chain and auctioned to a whitelisted set of solvers, so they never enter the public mempool. The solvers competing for the batch see the order itself. Weakest on independence and quality of the protection evidence (4/10): CoW Protocol's MEV-protection page describes the mechanism and calls the protection comprehensive, yet hedges that users are not exposed to mempool MEV 'in the same way' as on-chain swaps. No measurement of protection outcomes is published. Published price: CoW Protocol's Fees page (docs.cow.fi/governance/fees, read 2026-10-22) lists a Volume Fee of "Standard Assets: 2 basis points (bps)" and "Correlated Assets (Stables/RWAs): 0.3 basis points (bps)" (worked conversion: 2 basis points = 0.02 percent of volume…

Best for: Order-flow privacy in practice — 6/10

Order-flow privacy in practice · weight 30%6/10Rebate published AND reaching the end user's address · weight 30%5/10Inclusion breadth and what happens when your transaction is dropped · weight 20%6/10Independence and quality of the protection evidence · weight 20%4/10

Quick pick

Titan Builder

Ethereum block builder with a direct bundle-submission endpoint

Ethereum block builder with a direct bundle-submission endpoint. Strongest on order-flow privacy in practice (9/10): Titan Builder states that it will never unbundle a bundle or broadcast bundles or private transactions to the public mempool, and that it does no searching on Ethereum. Flow goes only to the builder. Weakest on rebate published AND reaching the end user's address (2/10): Titan's bundle API has a refundPercent parameter, but the bundle sender sets it. Titan publishes no rebate rate and no payout figure for end users. Published facts: No fee, subscription or rebate rate published (www.titanbuilder.xyz and docs.titanbuilder.xyz, read 2026-10-22).

Best for: Order-flow privacy in practice — 9/10

Order-flow privacy in practice · weight 30%9/10Rebate published AND reaching the end user's address · weight 30%2/10Inclusion breadth and what happens when your transaction is dropped · weight 20%4/10Independence and quality of the protection evidence · weight 20%3/10

Considered and not ranked

8 products we looked at and left out

A shortlist is only honest if it says who it turned away. Each of these was assessed against the same published criteria as the ranked table and excluded for a stated reason — not overlooked.

We assessed 16 products here and rank 8 — 50% of what we looked at. That share is of the products we assessed, not of the category: how many exist is not something we can count, so we do not claim a number for it.

Blocknative (block builder, MEV auctions, private order flow)Eden Network (Eden RPC, Eden Bundles)· No longer operatingbeaverbuild· Ranked elsewhereJito (Block Engine / bundles)Shutter Network (Shielded Trading / encrypted mempool)· Not live yet1inch (Fusion / 1inch Shield)· Ranked elsewhereJupiter (MEV Protect)· Ranked elsewherePhantom· Ranked elsewhere

What this ranking does not assess

Control failure: a key or vote changes the rules, freezes or mints.
Regulatory failure: no licence where you are, or a forced market exit.
Exit failure: you cannot get out at par, on time, or with what is yours.

These can still cost you money here; the ranking does not measure them, so a high place says nothing about them. Which criterion scores each family, and why the others do not apply, is in /data/risk-coverage.json.

How this ranking is built

Reviewed on order-flow privacy in practice, rebate published and reaching the end user's address, inclusion breadth and what happens when your transaction is dropped, and independence and quality of the protection evidence.

Data checked Oct 2026 · Independent rankings · We show our work

Reviewed 22 October 2026Next review by 6 December 2026Published 4 August 2026Methodology v2026.11.1

How this page is reviewed

Reviewed means every product ranked on this page was read against its sources on or after that date; every ranked category is re-read at least every 45 days. Models research, extract and parse. A deterministic engine ranks. Every quote passes an adversarial refute pass.

Accountable for this review: Mathias Siemonsmeier, Founder.

How we review · Review calendar · Corrections log · How we make money

Direct answer

What is the best MEV protection service in 2026?

MEV Blocker ranks #1 overall for MEV protection on ChainChoice. Ethereum RPC endpoint running a backrun-only order flow auction. It holds that rank under an affiliate-blind methodology scored across 4 published, weighted criteria — the code that ranks providers physically cannot read affiliate payouts (CI-enforced), so a payout can't move a rank. The verdict re-computes on every fee change, incident, or regulatory action; the full reasoning and the audit receipt are under Methodology.

How you can lose money here, and what the ranking scores

Liveness failure: the operator stops, censors you or loses data.
Scored by Inclusion breadth and what happens when your transaction is dropped · 20% (MEV Blocker 7/10, Flashbots Protect 6/10, CoW Swap 6/10)
Execution failure: you get a worse price, later, or nothing.
Scored by Order-flow privacy in practice · 30% (MEV Blocker 5/10, Flashbots Protect 6/10, CoW Swap 6/10)
Information failure: the number is wrong or bought, or your data leaks.
Scored by Independence and quality of the protection evidence · 20% (MEV Blocker 5/10, Flashbots Protect 6/10, CoW Swap 4/10)

Not assessed by this ranking: Control failure, Regulatory failure, Exit failure. A high place says nothing about these; the Methodology tab says what each means.

Also scored, as cost, quality or a summary of several families: Rebate published AND reaching the end user's address (30%).

FAQs

4 questions readers ask before choosing MEV protection.

Frequently asked

Questions people ask before choosing MEV protection

What is the safest MEV protection service?

Protection comes from whether the endpoint actually withholds your transaction. An endpoint that leaks calldata or hints to builders before inclusion has not protected anything, whatever block rate it advertises.

Do rebates actually reach me?

That is exactly what is scored, at 30% of the weight. A published rebate percentage that settles anywhere other than the trader's own address is not a rebate to the trader, so the criterion asks for evidence of arrival rather than an advertised rate.

What happens if my transaction is dropped?

It depends on the builder set behind the endpoint, which is why inclusion breadth and documented drop behaviour are scored together. A private relay that can protect you can also censor you, so the centralisation of that set is treated as a fact about your exposure.

Why are vendor-published protection rates not scored?

Because almost none of them can be independently reconstructed. A protection rate computed and published by the party selling the protection is shown here for context, and what is scored instead is whether the claim rests on data anyone outside the vendor could verify.

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Best picks

Best MEV protection in 2026

The best MEV protection depends on whether you need the transaction genuinely withheld until inclusion, and on where any rebate actually lands. Those two carry 60% of the weight between them, because they are the mechanism and the payout — an endpoint that leaks calldata to builders before inclusion has not protected anything, and a published rebate rate that settles anywhere other than your own address is not a rebate to you. Inclusion breadth and the independence of the protection evidence follow.

Best overall

MEV Blocker

Ethereum RPC endpoint running a backrun-only order flow auction

Data checked Oct 2026

Best for: Rebate published AND reaching the end user's address — 9/10

Browse this network

Keep exploring MEV protection services

The same published ranking, read for your country, side by side, or one provider at a time.

Every ranked provider, its full verdict

Best MEV protection services by country

How this category is defined

MEV Protection Services: overview, criteria and weights

Written and reviewed by Mathias Siemonsmeier Founder

Not financial advice · For informational purposes only · Always do your own research

Your setup

8 providers match your requirements

Why it leads

Tradeoff

Estimated cost for you

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