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Head to head · Wallet onchain · October 2026 research run

Sponge Wallet vs Turnkey Agentic Wallets

Turnkey Agentic Wallets scores 76 (BB) on agent readiness against Sponge Wallet's 43.2 (E), and leads in 6 of 7 scored categories. Sponge Wallet leads on payments & pricing. Both do wallet onchain.

Sponge WalletSponge Inc. · HTTP API E43.2/100#784 of 841 Turnkey Agentic WalletsTurnkey Global, Inc. · HTTP API BB76/100#38 of 841

Which one, for what

Sponge Wallet E

Good for A developer who wants an agent to hold stablecoins and pay x402 or MPP endpoints within minutes, with cards, bank rails and Hyperliquid or Polymarket trading behind the same key.

Ahead on

  • Payments & pricing, 70 against 58

Watch for

No status page, SLA or numeric rate limit was found, and the terms say the service may be offered in beta

Turnkey Agentic Wallets BB

Good for A company that wants agents to sign from its own wallets under rules checked in an enclave, with a person co-approving large transactions, across EVM, Solana, Bitcoin, Tron and other chains.

Ahead on

  • Reliability, 75 against 13
  • Schema & documentation, 79 against 66
  • Agent ergonomics, 77 against 43
  • Security & auth, 85 against 48
  • Maintenance & community, 83 against 27
  • Transparency & trust, 72 against 39

Also in its favour

  • Agent-ready, a grade of BB or better

Watch for

Policy conditions cap value per transaction. No daily, rolling or cumulative spending limit was found in the policy language

Score by category

CategoryWeight this runSponge WalletTurnkey Agentic WalletsEdge
Reliability16%201375Turnkey Agentic Wallets +62
Performance10%pendingpendingpendingnot scored in this run
Schema & documentation13%16.26679Turnkey Agentic Wallets +13
Agent ergonomics13%16.24377Turnkey Agentic Wallets +34
Security & auth14%17.54885Turnkey Agentic Wallets +37
Payments & pricing10%12.57058Sponge Wallet +12
Task success10%pendingpendingpendingnot scored in this run
Maintenance & community7%8.82783Turnkey Agentic Wallets +56
Transparency & trust7%8.83972Turnkey Agentic Wallets +33
Negative events≤1500
Total43.2 · E76 · BB

Facts side by side

FactSponge WalletTurnkey Agentic Wallets
KindHTTP APIHTTP API
VendorSponge Inc.Turnkey Global, Inc.
Hosted endpointhttps://api.wallet.paysponge.comhttps://api.turnkey.com
TransportsHTTPHTTP
AuthOAuth or keyAPI key
PricingFreeFreemium
x402payer tooling onlypayer tooling only
LicenceProprietary service under Sponge's terms of service. The SDK and CLI packages on npm are MIT, and the repository they name is privateProprietary service under Turnkey's terms of service. The SDKs, the CLI and the agent skills on GitHub are Apache-2.0
Read-only variant documentednono
llms.txtyesyes
Last release2026-07-072026-10-08
Terms last updated2026-06-302026-08-06
Privacy policy last updated2026-06-302026-06-29
Customer content may train modelsnot found in the textnot found in the text
Terms restrict automated accessnot found in the textyes
Terms restrict benchmarkingnot found in the textyes
Terms or service can change without noticenot found in the textyes
Arbitration or class-action waivernot found in the textyes
Popularity126 npm/wk, 20 PyPI/wk304k npm/wk, 12k PyPI/wk

Verdicts

Sponge Wallet

An agent can register a wallet with one unauthenticated call and pay x402 or MPP endpoints under daily, weekly and monthly limits enforced on Sponge's servers. No status page, rate limits, fee schedule, custody statement or security contact was found, the terms run to eleven short clauses, and the SDK was last published on 7 July 2026.

Turnkey Agentic Wallets

An agent gets a non-root user that can sign nothing until a policy allows it, with DENY rules taking precedence and human co-approval available. Policies cap value per transaction only, with no daily or rolling limit found, and each organisation gets five policies below Enterprise. Signing endpoints returned elevated errors for five hours on 27 August 2026.

Before you call either

Sponge Wallet

  1. Send Sponge-Version on every REST request. The skill file marks it required and the API answers with version status headers
  2. Use evmTransfer and solanaTransfer, the helpers the docs describe as enforcing allowlists and spending limits, not plain transfer
  3. Store the apiKey from registration at once. It is returned a single time, and losing it means registering again
  4. Call GET /api/discover/{serviceId} before POST /api/paid/fetch. The skill file says direct service URLs fail with auth errors
  5. Treat card details output as secret. It returns an encrypted card number and CVC with a one-time secret_key

Turnkey Agentic Wallets

  1. Use a non-root user's key. Refuse root credentials for unattended work, because root bypasses every policy
  2. Scope every signing ALLOW policy by wallet.id or wallet_account.address, or it covers every key the user can reach
  3. Check the activity status on each response. ACTIVITY_STATUS_CONSENSUS_NEEDED means a person must approve within 24 hours
  4. Retry with the identical body to stay idempotent. Changing timestampMs creates a new activity
  5. Back off with jitter on 429 and poll get_activity sparingly, since polling counts against the same 1 to 3 requests a second

Questions

Which is better for AI agents, Sponge Wallet or Turnkey Agentic Wallets?

Turnkey Agentic Wallets scores 76 (BB) on agent readiness against Sponge Wallet's 43.2 (E), and leads in 6 of 7 scored categories. Sponge Wallet leads on payments & pricing.

Do Sponge Wallet and Turnkey Agentic Wallets need an API key?

Sponge Wallet takes an API key or an OAuth sign-in. Turnkey Agentic Wallets needs an API key.

Can an agent call Sponge Wallet and Turnkey Agentic Wallets without installing anything?

Yes. Sponge Wallet has a hosted endpoint at https://api.wallet.paysponge.com and Turnkey Agentic Wallets at https://api.turnkey.com.

Other comparisons with Sponge Wallet or Turnkey Agentic Wallets

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