All projects on Base matching “standards”

Generate SVG or PNG QR codes for links, text and standard payloads. Includes a four-module quiet zone, selectable error correction and validated foreground/background contrast.

Timestamp SHA-256 hashes in Bitcoin with OpenTimestamps: returns a standard .ots proof per hash (pending, complete within hours), verifiable without us

AI-generated standard research report (Open Research Agent)

Purchase a prepaid GPU block without prior signup. Use for bounded interactive compute; standard x402 or MPP payment and a recovery public key are required.

Should I pay this x402 endpoint? Verdict pay/caution/block/cannot_pay with reasons: price vs your maxUsd and decoy prices, asset/network, payTo screened against OFAC SDN, Circle/Tether freezes and exploit/phishing/mixer labels, expected payTo, Bazaar track record, broken payment terms. Returns the payment option a standard client would sign.

Validate and standardize a delivery address: parsing, provider verification (US-optimized), geocoding and a deliverability score, as JSON. 0.02 USDC per call on Base. Useful before shipping to or storing an address.

Compute a keyed HMAC of some data with a secret key — the standard way to sign and verify webhooks (Stripe, GitHub, etc.) and API requests. Data and key may each be utf8/hex/base64/base64url; the tag is returned as hex/base64/base64url.

Validate a JSON value against a JSON Schema (draft-07, with the standard string formats enabled). An invalid schema is rejected as a clean 400 before payment; a valid schema that the data simply fails to satisfy is a successful result with valid=false and a list of errors (path, keyword, message).

Data Cleaner - Clean, validate, standardize and deduplicate tabular datasets, preserve originals, and produce Excel, PDF, JSON or TXT export reports with full change logs.

JSON-RPC read access to EVM chains (base, ethereum, polygon, arbitrum, optimism) with no API key. Send a standard JSON-RPC body (eth_call, eth_getBalance, eth_blockNumber, eth_getLogs). Also callable as GET with the same fields as query parameters.

JSON-RPC read access to EVM chains (base, ethereum, polygon, arbitrum, optimism) with no API key. Send a standard JSON-RPC body (eth_call, eth_getBalance, eth_blockNumber, eth_getLogs). Also callable as GET with the same fields as query parameters.

JSON-RPC read access to EVM chains (base, ethereum, polygon, arbitrum, optimism) with no API key. Send a standard JSON-RPC body (eth_call, eth_getBalance, eth_blockNumber, eth_getLogs). Also callable as GET with the same fields as query parameters.

Generate a finished, professional invoice PDF from JSON — recipient and line items in, a ready-to-send application/pdf out. Layouts: standard, legal, creative. Totals and tax are computed server-side so the numbers always add up. First payment auto-creates a wallet profile (token + API key in response headers); returning wallets get sequential invoice numbering and can save a sender letterhead. US

Base64 encode/decode UTF-8 text (standard or URL-safe). Offline. Amp port.

Automated /llms.txt & Agent Documentation Context Compiler (/v1/llms-generator) — Crawls any documentation or SaaS site and compiles a standards-compliant /llms.txt manifest and JSON-LD schema bundle. (https://llms-generator.agentdiet.dev/v1/llms-generator)

Given a standard 5-field cron expression, return the next N fire times in UTC.

Recent token graduations on Robinhood Chain launchpads (Pons v2 and Standard), each with a risk level, a red-flag summary and the latest market snapshot. Risk signals, not investment advice.

Marketing copy quality gate and pre-publish copy review for autonomous agents about to publish or send ad, landing-page, email, CTA, campaign or GTM copy. Returns a fast PASS/WARN/BLOCK verdict, claim-risk flags and prioritized fixes before release. Standard machine terms: https://nexuseval.vercel.app/terms.json 2026-08-29-v2.

Latest releases of the 10 main Ethereum clients as JSON: execution (go-ethereum, Nethermind, Besu, Erigon, Reth) and consensus (Lighthouse, Prysm, Teku, Nimbus, Lodestar). Version, date, days since release, link to notes, and a plain keyword flag when notes mention security or urgent upgrades.

Bitcoin protocol and software changes as JSON: Bitcoin Core merges and releases, BIP updates, Lightning spec and implementation changes. Each item has status (proposal, merged, released, activated), layer (consensus, policy, p2p, wallet), why it matters, what has not happened yet, and primary source links.