All projects on Base matching “options”

NASA POWER daily point climate/solar (keyless). POST {latitude}/{longitude}/{start}/{end} (+ optional parameters/community/format). Unpaid empty → 402; after settle empty/invalid → 400 charged:false. Disclose adjacency: swpc-space-weather / climate-trace-emissions (space weather / GHG ≠ POWER point meteorology).

OBIS marine species occurrences (keyless). POST {scientificname} (+ optional size). Unpaid empty → 402; after settle empty/invalid → 400 charged:false. Disclose adjacency: gbif-species-match / inaturalist-taxa-search / itis-taxonomy-search / eol (eol deferred).

Paleobiology Database fossil occurrences list (keyless). POST {taxon_name} (+ optional limit). Unpaid empty → 402; after settle empty/invalid → 400 charged:false. New paleobiology vertical; light disclose macrostrat-geologic (geo defs ≠ PBDB occs).

Our World in Data grapher CSV/variables (keyless). POST {chart|slug} (+ optional format/v). Unpaid empty → 402; after settle empty/invalid → 400 charged:false. New OWID research vertical; no live catalog adjacency.

Macrostrat geologic defs/structures (keyless). POST {endpoint?} (+ optional limit/structure_type/all). Unpaid empty → 402; after settle empty/invalid → 400 charged:false. New geoscience vertical; no catalog adjacency.

Current public Lever job openings, counts by team, department, location, commitment and workplace type. Optional since ISO timestamp filters openings by creation date. No account or API key required.

Dryad research datasets search (keyless). POST {q|query} with optional {per_page?}. Empty → 400 not charged.

Parse markdown: outline, frontmatter, tables, fences, links, lists. Optional polite URL fetch.

OpenAlex works search (keyless). POST {query|search} with optional {per_page?}. Empty → 400 not charged.

Decision arbitration: submit context, options, constraints, and risk_tolerance; receive a structured JSON verdict with confidence score, reasoning, and escalation flag.

[concierge json-pick] PubMed search via NCBI E-utilities (keyless). Query → count + idlist (retmax≤10) + optional title/journal/pubdate.

ENS (.eth) + Basename (.base.eth) forward/reverse resolution on Base/Ethereum public RPC. Avatar optional. Amp port.

DNS via Cloudflare/Google DoH: A/AAAA/MX/TXT/NS/CAA + optional SPF/DMARC parse. No mailbox probing.

A numbered material, Cairn Crab or Pocket Wild pixel creature from The Wild's field edition, $0.01 USDC on Base: 1000 editions per material or crab, 128 per pixel creature. A public site record with a receipt, optionally dedicated to a spirit's altar; not an NFT.

Use Check for a changed/unchanged signal and optional compact text diff. Exactly one URL or existing watch ID; URL plus rules can create a watch, whereas watch_id reuses saved rules and forbids overrides. Use Smart Diff for structured changes. On-demand only; x402 $0.005 USDC on Base, including cache hits.

Audit your x402 endpoint before buyers hit it. Checks that it answers 402 on the right method, that the payment options can actually be signed (EIP-712 domain of the token matches extra.name and extra.version), that the resource URL is the https URL buyers call, and that /openapi.json and /.well-known/x402 match. Includes the CDP validate verdict, whether the CDP Bazaar lists the endpoint, its pay

CPSC/SaferProducts.gov consumer product recalls search (keyless). POST {RecallTitle} (+ optional RecallNumber/Manufacturer/ProductName/format). Unpaid empty → 402; after settle empty/invalid → 400 charged:false. Disclose adjacency: nhtsa-recalls (vehicle safety recalls ≠ CPSC consumer product recalls).

Pay-per-joke vending machine: send USDC, get a fresh Claude-generated joke. Optional "theme" picks the topic.

Cat Fact Ninja random fact (keyless). POST {max_length?} optional. Unpaid empty → 402; after settle empty/invalid → 400 charged:false. Soft disclose dog-ceo-breeds / meowfacts.

Local EIP-55 / base58 / bech32 address validation (EVM/Solana/Bitcoin). Optional eth_getCode on Base. Amp port.

Converts any URL (PDF, webpage, Google Doc) to clean Markdown with optional AI summary. $0.05/convert via x402 on Base.

Clean a CSV ($0.005 USDC): give an https url or inline csv (max 1 MB / 20k rows). Trims whitespace, optional case rules, dates to ISO 8601, lowercases emails, normalizes phone digits, merges or flags exact + fuzzy duplicate rows on key_columns. Returns cleaned CSV text + JSON report (rows in/out, dupes, columns changed). Deterministic, no AI. As is, no warranty. Nothing stored.

Fetch a public https URL, compute SHA-256 of the response body, and report whether it changed vs a prior sha256/etag ($0.01 USDC via x402). Sticky: store sha256 and call again later. Optional previous_sha256, previous_etag, include_body_if_changed. https only — http, file, data, localhost, and private IPs rejected. Caps: 1 MB body, ~10s timeout, max 5 redirects. Returns JSON { url, final_url, cont

Convert a public https RSS 2.0 or Atom feed URL to tidy markdown ($0.005 USDC via x402). https only — http, file, data, localhost, and private IPs are rejected. Caps: 1 MB body, ~10s timeout, max 5 redirects. Optional max_items (default 20, cap 50). Returns JSON { url, final_url, feed_title?, feed_link?, format, items, markdown, item_count, warnings }.

Fetch a public https CSV URL and parse it into headers + rows ($0.005 USDC via x402). https only — http, file, data, localhost, and private IPs are rejected. Caps: 1 MB body, ~10s timeout, max 5 redirects, max 5000 data rows (truncated with warning). Optional has_header (default true). Returns JSON { url, final_url, content_type, headers, rows, row_count, warnings }.

ERC-20 name/symbol/decimals/totalSupply (+ optional balanceOf) via multicall3 on Base or Ethereum. 400 if not a contract. Amp port.

Pay $0.05 USDC to seal up to 100 KB of text until a future date. Content is inaccessible via GET /open/{token} until unlock_at passes. An optional label is visible before unlock via GET /status/{token}. Max unlock date: 10 years from now. Network: Base Mainnet. Each request stores one sealed text capsule and returns a token for later retrieval.

Returns one IMF DataMapper indicator (e.g. NGDP_RPCH real GDP growth) for one or more countries, optionally limited to a year range. Output has unit, per-country series of {year, value, forecast_flag}, and a top-level forecast_flag. A point is a forecast when year >= the current UTC year.

Screen a regulated facility by name (and optional state) against EPA enforcement and compliance history. Returns inspections, violations, formal enforcement actions, penalties, significant-noncompliance flags, and a compliance score. Public-domain EPA ECHO Exporter data.

Print and mail physical US letters (PDF, HTML, Markdown, DOCX, or image) and postcards via USPS, paid in USDC — with certified/registered proof options and standalone address verification at POST /v1/verify. Integration flow: POST /v1/documents to upload, POST /v1/quotes to lock a fixed USDC price for a recipient, then pay the returned per-quote x402 URL to create and mail the piece. Price is fixe