All projects on Base matching “verify”

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

Query a World ID-verified human expert agent. Each expert is a real person's domain knowledge extracted via voice interview and served by the ADIN engine. Discover experts at /api/bazaar.

Verify that a Base mainnet transaction paid at least N USDC to an address (optionally from a given sender, with K confirmations). Returns matched transfer, block time and confirmations. Read-only.

Quorum-verified Base USDC receipt across two of three public RPC sources: transaction status, recipient, amount and confirmations

Current normalized overall status, fault-first components, active incident (or closedIncidentSummary if stale), and poll clocks. overallStatus and hasActiveIncident are in the 402 JSON body so you can decide whether to pay. $0.01 per call in USDC on Base or Solana, verified and settled by the PayAI facilitator - no API key, no signup.

Mandato AR Intent Mandate scope (SKU#19) — verify allowlist+budget+expiry+signature. Does not create or sign.

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

Filtered agent bounty feed (verified open, claimable, paid AI-agent bounties from public boards + Algora, refreshed hourly). Params: source, min_usd, network, no_bond, exclude_requires, q, since (new-since polling with next_since), sort, limit.

Curated JSON of currently scouted agent earning opportunities (hackathons, bounty boards, agent markets) with prize, deadline, agents_allowed, human_entrant_required, kyc, spend_required, verdict and notes. Seeded from Tali's verified scout vault — use when an agent needs an up-to-date earn map without re-scraping the web.

Detects the technology stack of any public website from one page load plus public DNS: CMS, ecommerce platform, JS framework, web server, CDN/hosting, analytics, ad pixels, chat, payments, consent, plus email provider, email-sending services, DNS host and verified SaaS (MX/NS/TXT). Each hit has categories, version when exposed, confidence 0-100 and evidence. 266 signatures.

Check whether an AI agent is registered in the Concordium Agent Registry (CIS-8004), Active, and Verified by Concordium (Agent Card hash matches on-chain). Input: badge (CIS-2 token address) or Concordium account.

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

B2B Company, Tech Stack & Contact Lead Enrichment (/v1/company-enrich) — Extracts verified emails, social links, 40+ tech stack signals, pricing tiers, and company summary for GTM & research agents. (https://company-enrich.agentdiet.dev/v1/company-enrich)

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

LeadSuperstore.net verified external SMB & B2B prospect feed enriched with Core Web Vitals, WCAG 2.1 AA, JSON-LD & /llms.txt flaw diagnostics ($0.25 USDC per 10-lead batch).

JSON canonicalization — canonicalize structured data with RFC 8785 JCS; return canonical JSON text, UTF-8 byte length, and SHA-256 hash for integrity checks, signature preparation, and deduplication. Includes an EIP-712 signed attestation. Use when an agent needs an idempotency key, cache key, dedup hash, or verifiable commitment. $0.002 per call. Free verification at POST /v1/verify.

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.

Search US federal contract awards from USAspending.gov (award ID, recipient name, amount, agency, description) by keyword, JSON, ≤25 rows, no API key. Unofficial; verify at source.

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.

Commit a SIGNED live call: an ed25519-signed prediction (yes/no) on an OPEN Polymarket market, chain-linked (prev_hash) and content-addressed (sha256). Refuses resolved/closed markets — the signature must precede the outcome. Tamper-evident by construction; verify free at GET /verify. Body: {condition_id, side: yes|no, size_usd?, note?}.

Cited, conflict-aware JSON intelligence brief for current-market, company, technology and regulatory questions. Returns source-bound findings, freshness, conflicts, validation evidence and a verifiable receipt.

Service: c2pa-verify

Search the TrustLink verified XRPL link registry (up to 10 ranked matches with verification receipts).

Live Chainlink price for ETH, BTC, LINK, USDC, USDT, DAI, SOL, AAVE, UNI, stETH, cbETH, ARB, OP, POL or BNB in USD, read with latestRoundData() from verified aggregator contracts on ethereum, base, arbitrum, optimism, polygon and bsc. Omit chain to read every chain that has the pair and get the median, the cross-chain spread and each feed's age in seconds (to apply your own staleness limit), round

Evidence-based NFT collection risk report: verified OpenSea market data, realized sales versus listings, creator evidence, risk flags, missing data and a confidence level. Not a profit prediction.

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

Base USDC receipt verifier

Make a $0.01 USDC tip through the x402 v2 flow. Returns a thank-you receipt. Lowest-friction first payment to verify x402 flow.

Prompt-injection screen for text or a web page an agent is about to read: finds instruction overrides (many languages and obfuscated spellings), fake system or role markers, jailbreak personas, data-exfiltration links, requests for keys or seed phrases, tool, shell, or payment hijacks, and hidden content (invisible Unicode smuggling, zero-width and bidi characters, HTML comments, hidden elements,

Brazil macro snapshot in one call: SELIC policy rate, CDI, IPCA inflation (monthly and 12-month), official PTAX USD/BRL. Source: Central Bank of Brazil (BCB).