All projects on Base matching “verification”

Probe an agent-payable HTTP endpoint for current availability, latency, HTTP status, x402 challenge support, and response-schema validity.

Verify a Base/BSC transaction receipt for a payout or claim: status, block, sender, gas, decoded ERC-20 Transfer logs and a sha256 evidence digest. 0.01 USDC via x402 on Base. POST only. Free sample: /samples

Check a public URL for meaningful changes and freshness.

Risk check for an EVM contract/token address

Issue a signed read-only EVM integration-readiness report for a public address

DJZS adversarial logic audit of a prediction-market trade intent. Deterministic verdict (PASS/WAIT/FAIL) with risk score, defect flags, verdict_hash, and on-chain Proof-of-Logic receipt. Out-of-scope requests are refused WITHOUT CHARGE. Audit, not advice.

Create a signed proof for a wallet that anyone can verify offline.

Fast public web research with exact quotes, source hashes, conflicts, and a propose-only receipt.

Evaluate a claim or question against one supplied HTML or PDF source and return anchored evidence.

A deterministic Base chain identity and official USDC contract-presence check. No request body. Not a token-risk report, transaction simulation, or payment proof.

Fast European HTTP status and TLS preview

Arm a one-time tripwire URL that records every hit (payload, headers, source IP) for a window of up to an hour; polls are free. Also works as a cron heartbeat with expect_by.

Decode a BOLT11 Lightning invoice: network, amount, timestamp, expiry, expired flag, payment_hash, description, payee + payee pubkey recovered from the signature. GET ?i=<invoice>

Domain-level contact preflight with MX provider, SPF, DMARC and structured risk signals. Does not claim mailbox existence.

Validate an email address: syntax, MX resolution, disposable-domain check.

x402 seller + agent-readiness audit of one origin: live 402 challenge per paid route (up to 5), price vs catalog, HEAD/garbage-header safety, llms.txt, /.well-known/x402, openapi.json, dead doc links. Read-only.

Verify the current stable npm or PyPI package release and check a version/date claim against canonical registry metadata.

Verify that a USDC payment (payer -> payee, exact amount) landed on Base mainnet recently; returns verdict + matching transfer.

Verify a claimed USDC payment on Base: given a tx hash (or an x402 PAYMENT-RESPONSE header) and what you expect (payee, payer, amount, time window, confirmations), reads the chain and returns match / mismatch / not_settled / not_found with per-field checks, finality, the x402 EIP-3009 pattern, a self-payment flag and a second-RPC cross-check. Cannot show who owns an address or that a service was d

falcon.sol: Use this before paying an unfamiliar x402 seller. Send a seller host from the free index at /sellers.json; get a verdict (ok, caution, do_not_pay, unknown) built from live unpaid probes of up to 5 of its listed endpoints: liveness, latency, whether each returns a well-formed 402, whether the live price and payTo match what the CDP Bazaar advertises, and delivery signals, plus a deliver