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ChainRay /token-risk

Ethereum: Wallet portfolio: native balance plus every ERC-20 holding with USD price and value, total net worth, NFT collection count. $0.03 per call.

Lint an x402 endpoint: probes the URL once unpaid and returns a JSON report with a fix for every finding: payment-requirement fields, network, amount units, asset, payTo, EIP-712 domain read on-chain vs `extra`, Bazaar metadata, v1/v2 consistency and CORS for browser buyers. Free demo: GET /v1/check?url=

Markdown to a clean, print-ready PDF (US Letter or A4): one-pagers, checklists with tick boxes, cheat sheets, planner pages. Deterministic, no AI rewriting, up to 4 pages / 12k chars. Returns application/pdf.

Use GET /iban?value=… to check checksum validity and retrieve bank name, country and BIC.

Cost-aware crypto perpetual risk report for trading agents: projected net carry, break-even time, market regime, breadth, funding crowding, basis outliers, open interest, 24h persistence, and transparent risk flags.

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Probe one public endpoint and diagnose whether agents can discover and parse its unpaid x402 challenge.

Batch canonicalize up to 1000 JSON payloads in one call — one signature, one payment, one attestation. Same RFC 8785 canonicalization as /v1/canonicalize. Use when an agent needs to fingerprint a dataset, dedup a batch of records, or hash many inputs in a single round-trip. $0.01 flat per call (about $0.00001 per item). Free verification at POST /v1/verify.

Send 3-5 words, get one English sentence back. x402 connectivity probe.

Cambrian /evm/price-current ucundan güncel fiyat verisi; ödeme Base mainnet üzerinde x402 ile doğrulandıktan sonra JSON döner.

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Whether a date is a business day on one or more settlement calendars (NYSE, Fedwire/FedACH, TARGET2, UK), which holiday closes it, NYSE early closes, and the previous/next business day. Deterministic, no AI.

Store a secret (API key, webhook payload, signed URL) encrypted with WebCrypto AES-256-GCM and share a claim URL that yields the secret exactly once. A Durable Object serializes reads so single-use delivery is race-free, and every burn returns an Ed25519-signed attestation. Creating a vault requires x402 payment; the recipient's claim read (GET /v/:vault_id) is free.

Current EVM block number with multi-RPC failover.

Agent builds AND HOSTS a complete single-file landing page from your spec and returns the live URL. Pay-per-call in USDC on Base.

Bitcoin PSBT analyzer (BIP174/370, base64 or hex): total in/out, absolute fee and fee rate (sat/vB), high-fee sanity warnings, dust outputs, change detection (BIP32-derived outputs), RBF signaling, signed/finalized status. Read-only; nothing is broadcast or stored.

Brazilian company (CNPJ) registry lookup from Receita Federal open data, normalized: legal/trade name, status, CNAE activities, address, Simples/MEI, partners (QSA). Supports alphanumeric CNPJ.

Deterministic canonical JSON + SHA-256 fingerprint

Agent Bounty Radar, new items only ($0.01): bounties first seen after ?since= (ISO-8601). Open crypto-paid bounties an autonomous AI agent can enter and get paid for (Taskmarket, Stacker News, Superteam Earn; human-only listings filtered out), each with reward, deadline, chain and a ready 'how to enter' command. /bounties/new?since= returns only items first seen after your last poll, with stable I

Audit one public HTML page for SEO metadata, canonical, OpenGraph and JSON-LD signals.

Extract main webpage content as clean Markdown or structured JSON from a URL, with deterministic source hash, plain text, metadata and links. SSRF-safe with strict redirect and document-size limits.

Pre-flight due diligence for GitHub bounty issues. Detect competing PRs, stale issues, maintainer inactivity, saturation and payout-risk signals before an autonomous coding agent spends compute on implementation.

Post a message to the board — a public, permanent, paid message wall. Every message costs $0.005 USDC, making economic proof-of-intent the spam filter. Messages are public, timestamped, and attributed to the paying wallet's transaction hash.

Read-only Polymarket market health: resolves a full Polymarket URL, slug, token ID, or search phrase, then returns spread, 1/2/5 cent depth, imbalance, fee schedule, and book freshness.

Batch check up to 50 addresses/Twitter handles. Returns existence flags for each.

Card BIN Lookup x402 — Multi-signal verification - assess a BIN together with IP, phone, IBAN and address

BentCrypto Solana Token Security API - authority and Token-2022 control analysis for AI agents

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