All projects matching “signed”
216 results- base-gas-x402Service
Current gas price on Base and what a transaction costs in USD right now: base fee, priority tiers, ready-to-sign maxFeePerGas.
Basebase-gas-x402-production.up.railway.appfrom $0.0024 endpoints675calls / 30d - underground.substratesymposium.comService
Wire-In Lookup — per-entity merchant-seat verdict. Pass ?ua=<counterparty-UA>; get ONE signed row: score (0.0-1.0 payment-reliability observed at this seat), confidence, verdict (settled | attempted_payment | probe_only | low_signal | unknown), observed counts, Ed25519 attestation. $0.01 USDC/entity on Base or Solana. Fold the score into your own counterparty model — wire it into your scoring loop
BaseSolanaunderground.substratesymposium.comfrom $0.01180 endpoints377calls / 30d - PHION InferenceService
Normalize an agent payload to a PHION service schema without changing payment-critical values; return a signed repair receipt
Basephion.systemsfrom $0.00116 endpoints242calls / 30d - TabulariumService
Returns the page's readable text plus an Ed25519-signed record (final URL after redirects, fetch time, status, sha256 of the body and of the text) that verifies offline. Charged only for 2xx text pages; refused URLs cost nothing.
Basetabularium.matt-3e0.workers.devfrom $0.0025 endpoints214calls / 30d - Agent MercantileService
Produce a factual snapshot of current x402 payment authority for one unpaid v2 requirement and one public EVM payer: selected scheme/network/asset/amount/payTo/transfer method, same-block token balance, canonical token-spender allowance when that path applies, and declared recovery-path classification. Does not sign, approve, construct a transaction, judge native gas, or recommend whether to buy.
Baseapi.agentmercantile.comfrom $0.00511 endpoints173calls / 30d - Horizon PulseService
x402 endpoint checker: decodes an x402 endpoint's 402 payment terms without paying. GET url (optional method GET/POST, JSON body for POST). Sends one unpaid request; never pays or signs. Returns JSON: httpStatus, isX402, x402Version, decoded accepts (network, asset, USD amount, payTo, EOA or contract), discovery metadata presence, and pass/warn/fail checks. Any HTTP answer from the target, even 4x
Basehorizonpulse.devfrom $0.00231 endpoints158calls / 30d - Prediction market arbitrageService
Get one Polymarket versus Kalshi gap card with the topic, both yes prices, gap cents, a fee-adjusted net edge, buy and sell venues, and a suggested action. The fee-adjusted net edge is the number a trading wallet acts on. $0.25 USDC. Inline JSON. Includes a signed Ed25519 receipt you can check with the published key.
Baseaizamon.comfrom $0.00326 endpoints153calls / 30d - DataStore APIService
Store JSON or a file (up to 25 MB) privately for 7 days and hand it to a human or another agent with a signed link or a password-protected address. Includes 100 reads. No account needed: pay $0.01 per call here, or use prepaid credits with an API key, or store public items free at /v1/free/items. Docs: https://fileshareforagents.online/llms.txt
Basefileshareforagents.onlinefrom $0.011 endpoint149calls / 30d - LivecheckService
Livecheck Confirm - independent side-effect verification (actor != verifier). POST /v1/confirm with {url, intent} (+ optional claim). Returns confirmed|failed|unknown; thank-you fluff alone never confirmed - durable ref/id required. Intents: lead_submit $0.10, listing_published $0.10. order_placed is POST /v1/confirm/order ($0.25). Signed receipts + GET /stats. Same origin as Livecheck verify ($0.
Baselivecheck.fly.devfrom $0.015 endpoints125calls / 30d - 767-2676.comService
Signed time-bounded witness of an agent-carried payload digest; the payload stays with the agent
Base767-2676.comfrom $0.0013 endpoints116calls / 30d - JAW.id ENS Reverse ResolverService
Cross-chain swap quote over NEAR Intents (Aurora). Returns the deposit transaction to sign on the origin chain; the deposit address is the part of quoteId after "aurora:". After sending it, POST /proxy/v2/move-asset/deposit/submit with provider=aurora, the deposit address and the tx hash, then poll GET /proxy/v2/move-asset/deposit/status with provider=aurora and the deposit address. Both are free.
Baseapi.justaname.idfrom $0.0053 endpoints100calls / 30d - x402 Carbon Retirement APIService
Entry point to the x402 Carbon Retirement API on Base. Returns every endpoint you need plus a live snapshot of the top 3 carbon classes and marketplace listings by liquidity. Discover, quote and certificate are free. Retiring is paid: each retirement costs the credit price plus a fee, sent from your own wallet (prepare/retire) or relayed from a signed USDC authorization (prepare-auth + POST action
Basex402.klimalabs.comfrom $0.0012 endpoints93calls / 30d - TxSim DecoderService
Simulate an EVM transaction before signing. Decodes the calldata into a named function with arguments and security risk flags, AND runs a keyless static eth_call preview to tell you whether the transaction would succeed or revert (with the decoded revert reason). Use it to catch a failing or malicious transaction before you broadcast it. Read-only, no keys, no node infra. Asset-level change tracin
Basesimulate.cyberwarex.comfrom $0.0023 endpoints91calls / 30d - Rooms by AurmadaService
Use it before you send to an address, or to screen sign-ups and leads for typos, disposable domains and role addresses. Checks syntax, MX records (with the A-record fallback), null MX, a list of about 120,000 disposable domains, role addresses (info@, support@…) and free providers, without sending anything. No SMTP probing, so it can't confirm the mailbox exists. Never charged for errors: we settl
Baserooms.aurmada.comfrom $0.00120 endpoints80calls / 30d - RollService
Verifiable RNG — cryptographically-random integer(s) signed by the treasury key. Drop-in VRF for game studios. $0.001 USDC.
BaseSolanaapi.anchor-x402.comfrom $0.00118 endpoints73calls / 30d - neo timestampService
Scan text or a public page for prompt injection before your agent reads it: overrides, fake roles, exfiltration, tool abuse, payment asks, invisible Unicode/HTML-hidden instructions, base64. Rule-based evidence, signed and logged.
Baseneo-collettive.onrender.comfrom $0.019 endpoints71calls / 30d - pulse-api-production-7aae.up.railway.appService
Global Pro adds independent higher-timeframe context, SMA family, regression channel, anchored VWAP, Fibonacci, confirmed pivots, RSI and ATR evidence to the same 520-candle chart and aligned Spot plan. Context follows the selected timeframe; conditional paths and unclear Elliott counts are explicit. Free full-report recovery. Market or Limit orders require separate wallet review and signing.
BaseArbitrumpulse-api-production-7aae.up.railway.appfrom $0.2010 endpoints66calls / 30d - RSoft BankService
Request a real USDC loan for an AI agent on Base mainnet from RSoft Bank: a real lender, not a calculator. Call it when your agent needs capital. The agent signs an EIP-712 LoanRequest (wallet, amount, nonce, deadline); the bank underwrites it and disburses USDC on-chain to the agent wallet. No sponsor: 2 USDC flat; with one: from 5 USDC, growing per repaid loan. Free pre-check first: GET /api/pre
Base7mavs5vu7ggbhtxvbavdgs26qa0cbawg.lambda-url.us-east-1.on.awsfrom $0.0017 endpoints56calls / 30d - TWZRD Agent IntelligenceService
Paid trust intelligence (0.05 USDC). Solana subject wallet only. The Solana or Base accept you select returns the portable signed V7 receipt. Cheaper: GET /v1/intel/quick/9MkM5Ra48KFcSv9HDQ8sb3C3r5HjouEwGQ6sp1cx1vde is the 0.001 USDC score-only teaser for the same subject. Free POST /v1/intel/preflight before spending. Sponsored Solana accepts require a payment client that honors accepts[].extra.f
Solanaintel.twzrd.xyz—5 endpoints55calls / 30d - InsumerAPIService
Signed attestation (ECDSA plus a post-quantum ML-DSA-65 companion) of on-chain wallet conditions across 37 chains: token balance, NFT ownership, EAS, Farcaster, view calls, ratio rules, account code (plain key, EIP-7702 delegation, or contract), and agent standing (ERC-8004 registration, ERC-7710 delegation validity). A verifiable boolean, never raw balances or code. Up to 10 conditions per pay-pe
Baseapi.insumermodel.comfrom $0.053 endpoints50calls / 30d - SorenService
A signed, timestamped read from Base mainnet: whether a transaction landed and in which block, an address's ETH and USDC balance, or the current block height and gas price. Use the tx query when you paid over x402, received settlement_pending, and need it resolved — the transaction is in a block with status 1, or it is not. Read through a commercial node, not the public RPC. Verify with soren.com/
Basesoren.comfrom $0.00216 endpoints50calls / 30d - web-page-brief-evidenceService
Independent second opinion on an x402 resource: compares the seller's Bazaar listing and x402 manifest against the live observed price, payTo, network, method and paywall. Field-level evidence with source, timestamp and hash, plus a signed receipt. / Segunda opinión independiente sobre un recurso x402: compara la ficha pública del Bazaar y el manifiesto x402 del vendedor con el precio, destino, re
Baseagente.revenuerecoveryai.appfrom $0.0057 endpoints48calls / 30d - Dot numbers to braille cellsService
Transcribe text to Unicode braille (grade-1 / uncontracted English braille), with capital and number signs. Characters with no grade-1 representation are clean 400s.
Basebraille.openverbs.comfrom $0.0024 endpoints45calls / 30d - StormapService
Use when an agent is about to pay an x402 endpoint, seller domain or wallet it has not used before. Returns ok_to_pay, caution, dont_pay or no_payment_needed with reasons: live payment terms, its Coinbase Bazaar listing and paying wallets in 30 days, whether the live pay-to address matches the listing, real-USDC check, price vs. similar tools, and seller domain age. Read-only: never pays or signs.
Basestormap.aifrom $0.0114 endpoints43calls / 30d - agenticfinancegraph.comService
Statement history: The agent's last 24 three-hour statements (outflow split into spend and routing hops, what left its control, income, open flags), each with its keccak-256 hash, the prevHash link that chains them, and a Merkle proof against the signed root of its window. About one ERC-8004 agent on Base, by Agentic Finance Graph. id = token id, slug or bound wallet; an agent never seen paying is
Baseagenticfinancegraph.comfrom $0.0115 endpoints42calls / 30d - maraventanoindex.comService
Per-call counterparty lookup. Pass ?ua=<counterparty-UA>. Returns ONE signed row: has_record (yes/no), payment-attached count, settlement count, class, verdict (known_payer | probe_only | low_signal | unknown), with Ed25519 attestation. Pay $0.01 USDC on Base or Solana per call. Call it before every transaction to check if a counterparty has ever paid at this merchant seat. Wallet-based lookup (?w
Basemaraventanoindex.comfrom $0.011 endpoint40calls / 30d - liquidagent.aiService
Gas sponsorship for one ERC-4337 user operation on Base (EntryPoint v0.8). Price = max($0.03, 1.3× the op's gas cap); this is the floor — send your user operation to get the exact quote. Bodies this URL accepts: {sender, calls[, redelegate:true]} (plain wallet, EIP-7702) | {userOperation} unsigned (any EntryPoint v0.8 smart account, bring your own operation) | JSON-RPC ERC-7677. Then POST the sign
EVM chain 5042BaseSolanaapi.liquidagent.aifrom $0.00115 endpoints38calls / 30d - Sanctions Screening by nsgoodsService
Use this before an AI agent pays an x402 endpoint: give the endpoint URL, we read its own 402 quote, pull every payTo (all networks) and screen each against OFAC, UN, EU and UK lists. Signed per-payee and overall verdict: deny on an OFAC match, review on a UN/EU/UK match or an unavailable list, clean otherwise. $0.01 in USDC on Base or Solana. A bad, unreachable or non-x402 URL returns 400, 422 or
Solanasanctions.nsgoods.org—3 endpoints35calls / 30d - itsgloria.aiService
Latest direction+magnitude scorings for Polymarket events. Each row scores one (headline, market) pair with a direction (up/down/none), confidence (0-1), signed magnitude in points, composite tier (SKIP/WATCH/TRADE), and current market price.
Baseapi.itsgloria.aifrom $0.035 endpoints35calls / 30d - SettledService
Pre-spend check for one x402 endpoint, as one signed answer: whether the seller's on-chain sales look organic or self-generated (settlement integrity), a fresh probe on both verbs with the parsed quote and payability verdict, whether the payTo exists on Base, the seller's other endpoints, paying agents' reports, the scout's real-payment result, and a honeypot scan of the listing text. Returns reco
Basesettled.toolsfrom $0.0028 endpoints35calls / 30d