Font tools: Bitmap font from a TTF/OTF: atlas PNG, BMFont .fnt with kerning, JSON and a preview of a sample line. Pixel mode snaps glyphs to whole pixels with no antialiasing. Full schema: https://rengi.dev/v1/font-tools/schema

Run one live-web research task through 2–7 buyer-selected open-weight models. Every model receives the same retrieved evidence and returns a separate structured analysis with citations, latency, usage, and validation results. No ranking or synthesis.

Bitcoin leading indicators history: daily 0-100 strength and direction for sovereign adoption, crypto hiring, corporate treasuries and hashrate, full series, one call. Not investment advice.

Check that everyone in an agent session still qualifies, right now. Every member wallet is checked again against the channel's on-chain conditions on current chain state. Members who no longer meet them are removed with a signed result; the rest are re-attested with fresh signed results. Asked for by a session member, priced per member checked (twice that in rooms with Merkle proofs). No account or API key. Pay in USDC on Base, Polygon, Arbitrum or Solana.

Leaderboard: Add 100,000 submissions and 365 days to a board. Full schema: https://rengi.dev/v1/leaderboard/schema

Decide if an agent's reputation is real or bought: Sybil forensics for ERC-8004 AI agents — reviewer concentration, ghost reviewers, burst detection in the reputation registry. Check for bought feedback before trusting an agent's score. No account, no API key

Decide whether an AI agent's reputation is earned or bought: ORGANIC/FARM/BURST origin detection with sybil forensics — the follow-up to should-i-pay. Check before you count an agent's feedback score. No account, no API key

Call before paying or transacting with an ERC-8004 AI agent: Can I trust this agent? TRUST/CAUTION/UNTRUSTED verdict with confidence and a shareable verdict page in every response. No account, no API key

FDA adverse event counts — FAERS reports naming a drug: total reports, how many were serious, and the most reported reactions with counts and shares. Report counts are not incidence and prove no causation; use for pharmacovigilance signals and safety research, not clinical decisions.

Listed wine companies list: every dated edition of the register of publicly traded wine stocks (ISIN, shares, wine share, sources) with what changed, in one call. Not investment advice.

Batch website safety check: the full /safe report for several URLs in one call, priced per site and cheaper than single checks. Each result has a verdict (safe, caution, unsafe), a 0-100 score, and evidence-backed flags for TLS, redirects, security headers, mixed content, insecure forms, and domain age, plus a summary count. Useful for screening every link in a search result, email, or document at once. Not charged if no site can be checked.

Prove you qualify to enter another agent's channel: you sign to show you control your wallet, then it is checked live against the channel's on-chain conditions across 34 chains. You get in with a signed result the other agents can verify offline, or get a signed "not met". Pay for your own entry when the channel's creator has no credits left (twice the price in a room whose receipts carry Merkle proofs). No account or API key. Pay in USDC on Base, Polygon, Arbitrum or Solana.

Call this before buying a Solana meme token: Is this token a rug? Binary verdict (SAFE/RISKY/RUG) with action ENTER_OK/CAUTION/SKIP from pump.fun and Meteora behavioral flow. Shareable verdict page and card image in every call. No account, no API key

Before your agent negotiates or shares data with another agent, make both prove they qualify. Open a channel with on-chain conditions (a USDC balance, a governance token, a verified attestation). Every agent proves wallet control and is checked on live chain state across 34 chains, with a signed result anyone can verify offline, optionally with Merkle proofs. Re-check on demand; whoever stops qualifying is removed. No account or API key. Pay in USDC on Base, Polygon, Arbitrum or Solana.

Get Arkham intelligence for an entity. $0.20 per call.

Leaderboard: Create a board with 100,000 submissions and 365 days; returns keys and a ready JS snippet. Full schema: https://rengi.dev/v1/leaderboard/schema

Decide whether to interact with an AI agent at all: Can I interact with this agent? INTERACT/CAUTION/AVOID verdict with confidence for conversations, task delegation and data copying — not just payments. Shareable verdict page in every response

ENS resolve on Ethereum: turn a .eth name into an address, or an address into its primary ENS name (reverse names returned only when verified). Forward and reverse lookup.

Return seller identity and publicly published seller signals for a marketplace listing. Missing feedback or business fields remain null; no customer or seller account access is attempted. Base mainnet USDC

Checks Portuguese ad/video copy against advertising rules: false promises, fake urgency, unproven numbers and comparisons, claims beyond declared benefits, missing affiliate disclosure. Deterministic.