All projects on Base matching “payment”

Give this API a loan amount, an interest rate, and a repayment term, and it returns the exact monthly payment plus a full month-by-month schedule: interest paid, principal repaid, and balance remaining for every payment. Ask what an extra $300 a month, or a $10,000 lump sum in month 24, would do and it reports the months and interest saved. Every figure uses banker's rounding at pinned precision,

Call before paying an unfamiliar x402 endpoint, or to pick between providers. $0.02, usually <1 s plus one probe: live unpaid probe (status, latency, TLS, PAYMENT-REQUIRED decoded and sanity-checked), seller reputation from indexed on-chain USDC payments to its Base payTo (24 h/7 d count, distinct payers, total and median USD, top-payer share), Bazaar listing and price, and a looks legit/caution/a

Did this USDC payment settle, and what is the payer's funding source? Deep Base verification: confirmations, payTo/amount match, fake-token and lookalike warnings, plus the payer's inbound USDC funding history from an index (latest 500 transfers before the payment, then up to 5 more pages; coverage.historyComplete says if that was the full history), top funders, coverage stats and a recheckable sh

BAGS Agent API index — machine-readable directory of the agentic payment API, MCP server, and x402 payment surface.

Which calendar slots (days, months, or weekdays) have the largest SEBRA payment sums and how many payments.

Spend preflight for AI agents. Send the x402 PaymentRequired body (v1 or v2) you received, or a cart, plus optional rules (per-payment max, hold threshold, daily cap, allowlists, new-domain days, endpoint category price multiple, liveness and payTo changes). Returns allow|hold|block with reasons, the cheapest acceptable payment option, and a receipt id. Read-only: never signs, settles, or holds fu

Fetch any URL and, without paying, decode its x402 402 Payment Required challenge: price (atomic and formatted for known stablecoins), asset, network, payTo, resource, description, timeout and any input schema. Flags MPP and Bazaar discovery extensions. Returns free:true when no payment is needed. SSRF-hardened: public hosts only; private, loopback, link-local and cloud-metadata addresses are reje

Agent Budget Guard: pre-payment budget check, spending limits, allow/deny approval and audit evidence for AI agent x402 USDC payments

Offline pre-sign check (no RPC, fast): decodes a transaction, EIP-712 typed data (Permit, Permit2, EIP-3009), an EIP-7702 authorization or an x402 402 + payment payload and returns SAFE/CAUTION/DANGER, every risk flag with its reason, decoded args, counterparties, x402 payment-vs-402 match and OFAC SDN screening. Use /v1/check for on-chain facts and simulation.

x402 preflight: before your agent signs a payment, fetch a paywalled URL's 402 and lint it. Parses v1 bodies and v2 PAYMENT-REQUIRED headers, then checks each accepts[] option: known network, canonical USDC, EIP-712 domain (extra.name/version) that a signature will verify against, EIP-55 payTo, zero/contract payTo, amount sanity, timeout, testnet, resource-host mismatch. Returns ok/warn/block per

Accounting, reconciliation and audit trail for autonomous agent spending. Record every x402 purchase as a receipt; each is matched against the on-chain USDC payment (Base, Solana), missing or unmatched payments are flagged, finance gets a monthly statement and CSV export, and daily batch fingerprints are anchored on a public ledger with a verification page per receipt. USD 1 per agent wallet per c

Buy paid placement in the agent-exec directory of live x402 services: a promoted listing outranks free ones while paid, and demotes automatically the moment payment lapses. This entry buys the day plan ($0.0667). Week and month plans are also sold -- read the live price table from https://agent-exec.45.67.221.128.sslip.io/.well-known/x402.json rather than trusting a cached figure. Payment buys pos

Audit a public HTTPS x402 API without payment: HTTP 402 challenge metadata, Bazaar and well-known discovery, OpenAPI 3.1 operation schemas and payment declarations, redirects, latency, and security headers.

Real-time on-chain payment verification and check via Base RPC. Returns structured signals: verified status, amount, sender, recipient, transaction confirmation, block number. Pay $0.005 USDC per check. Covers payment, transaction, address, contract, score, signals.

Run a mix of read/watch/verify/compare/tables operations (up to 6 weight-units total — read, watch, verify, and tables cost 1 each, compare costs 2) behind a single payment instead of negotiating a separate payment for each one. Priced at a discount vs paying per-item individually.

Submit one verifiable fact on the machine-payments beat for editorial review. Body: {"contributor_wallet": "0x... (Base, receives the bounty)", "category": "machine_payments_metrics|x402_endpoint_news|protocol_governance|pricing_change|other", "fact_statement": "one specific checkable claim, 20-600 chars", "source_url": "https://..."}. Agent-run review within ~48h fetches your source and checks it

Payment-claim verification: checks a claimed Nano, Base USDC or Stacks (STX/SIP-010) payment against the public chain and returns a verdict with every read used

Payment quote with amount, asset, and merchant wallet

API recommendation and x402 discovery for your task. Required query: need. Which API should I call? Recommends which x402 API to use for any task, with evidence. Describe a task in plain words. Compare up to five paid APIs, URLs, prices, payment networks and invocation details. Includes paid delivery evidence and risk flags. Provider calls are paid separately. No picks / non-2xx is never charged.

Check whether a customer has enough tokens and eligibility to redeem a reward. Onchain loyalty platform on Base Network. Businesses launch branded rewards in minutes, customers earn real value with every purchase, and AI agents automate the rest via REST and MCP. Payment alone works: the paying wallet is the caller. An API key is optional. The call is sco...

Call when qualifying a short company website list. Processes 2-5 URL slots for one fixed payment and returns evidenced profiles in input order, with per-URL failures. Batch deadline 18 seconds; each target at most 8.5 seconds. Settles only if at least half are delivered and no target was left unstarted by the deadline; otherwise returns all items uncharged. No contact values or outreach.

Builds a sanitized go-live twin of an agent-commerce mission before a buyer allows payment, delegation, or live execution.

Sponsor one settled payment_surface_discovery.v1 Task using C50, C500, or C5000 (default C50).

Load a reloadable card balance with USDC. Pay from either chain: the card issuer only accepts USDC on Base, and Laso bridges the payment to the account holder's own deposit address at the issuer over CCTP, which mints native USDC so the full amount arrives. Laso absorbs the bridge cost, so the price is exactly the amount that lands on the balance. Requires a linked card issuer account. Follow with

Cheapest real end-to-end test of your pay-per-call (HTTP 402) client: pay US$0.002, get back what was paid (payer, amount, network, timestamp) and the text you sent; the settlement receipt is in the PAYMENT-RESPONSE header. A free trial call returns paid_usd 0. Use it to check a wallet, a client library or a facilitator before buying something bigger.

Normalize an agent payload to a PHION service schema without changing payment-critical values; return a signed repair receipt

Recurring wallet monitor for crypto agents. Check balances and new USDC/ERC-20 transfers since the prior cursor, then return a ready next request. Designed to be called about every 60 seconds for deposit detection, payment monitoring and treasury alerts.

Search every verified x402 agent endpoint listed in the AgentPay Directory. One query matches names, categories, tags and descriptions across all live listings and returns prices, endpoints and payment terms. 0.001 USDC per query via x402 on Base L2.

Fetch a web page and return clean Markdown with Litmus intelligence. Requires payment of $0.005 USDC per page.

Address security check — detect malicious wallets, known phishing addresses, scam contracts, and blacklisted entities across all EVM chains. Chain-independent lookup against multi-chain security databases. No API keys needed. Accepts USDC payments on Base and Solana