All projects

OpenAIRE datasets search (keyless; ≠ publications). POST {title?}/{doi?}/{size?}. Empty -> 400 not charged. openaire-publications/zenodo/dryad/figshare/dataverse adjacency disclosed.

EBI OLS4 ontology term search (keyless). POST {q|query}/{rows?}. Empty -> 400 not charged.

Watch up to 25 domains for 30 days for new ransomware leak-site claims. $2.00 USDC on Base, paid once. Checked every 15 minutes; on a domain or exact-name match you get a signed webhook. Validate entries free first at POST /v1/watchlists/validate. Alerts are unverified claims from criminal leak sites, commercially reusable sources only.

OECD Composite Leading Indicators SDMX (keyless). POST {country?}/{start_period?}. Empty -> 400 not charged. worldbank/bls adjacency disclosed.

Get price history

NYC Open Data 311 service requests (keyless). POST {limit?}/{borough?}/{complaint_type?}. Empty {} -> 400 not charged. Civic 311 vertical — disclose chicago-food adjacency.

Top stressed crypto issuers from the current DeltaSignal slice.

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

NWS active weather alerts (keyless). POST {area} and/or {point}/{zone}. Empty features → 404 not charged.

CMS NPI Registry lookup (keyless). POST {npi} and/or {first_name,last_name,state} / organization_name. Empty result → 404 not charged.

NOAA CO-OPS tide predictions (keyless). POST {station} and/or {date?,datum?}. Empty → 404 not charged.

NIST NVD CVE 2.0 lookup (keyless). POST {keyword?} / {cveId?} / {resultsPerPage?}. Empty → 400 not charged. Respects NVD rate limits.

Signed proof of what a web page said: give a URL, get its text, screenshot and TLS details with a timestamped cryptographic signature anyone can verify.

Audits the JSON-LD structured data on one public web page: P1 for no schema or missing required properties, P2 for a low rich-result score, each with the properties to add. Call it when a page is missing rich results in Google or before publishing a page that should earn them. Input: url. Returns in seconds. Errors: 400 invalid input, 502 audit failed, 504 timed out. You are not charged for an err

NIH RePORTER v2 project search (keyless). POST {term} and/or {fiscal_years?,offset?,limit?}. Empty → 404 not charged.

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

Lithium Research Vault - headline snapshot for any lithium & battery-metals company, producing mine, or DFS-stage developer. One row: latest production, AISC, cash/debt/EBITDA, reserves, DFS NPV/IRR, top holder, source filing. Albemarle, Pilbara, SQM, Greenbushes, Atacama, Cinovec, Manna, Bandeira. 66 lithium mines (43 producing + 23 developer), 44 operators. Query by ticker (ALB, SQM, SGML, EMH,

NHTSA vehicle safety recalls by make/model/year (keyless). POST {make}/{model}/{modelYear}. Unpaid empty → 402; after settle empty/invalid → 400 charged:false. No catalog adjacency.

News brief with sources (GDELT headlines+links only). No article body republish. No charge on empty/failed.

Checkup for x402 buyer clients. Pay once and get a field-by-field diagnosis of the payment your client signed (amount, recipient, validity window, clock offset, nonce, EIP-712 signature) and of the request that arrived, plus the facilitator's verify and settle results. Base mainnet payments get the full diagnosis; Base Sepolia payments get a preview with the status of each check only.

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

Check an x402 seller before you pay it. Probes the endpoint now, checks that its payment can actually succeed (token EIP-712 domain, payTo), and adds its 30-day uptime from our monitor of paid Bazaar listings, how many distinct buyers paid it, and how its price compares with similar listings, with cheaper well-used alternatives. Returns a verdict (ok, caution, avoid) with the reasons.

NASA TechPort R&D project search/detail (keyless). POST {projectId?} / {titleKeyword?|query?} / {updatedSince?} / {pageSize?}. Tight field projection. Empty → 400 not charged.

JPL SBDB small-body lookup (keyless; ≠ DEMO_KEY neo). POST {sstr}/{des?}. Empty -> 400 not charged. launch-library/nasa-techport adjacency disclosed.

Find the best x402 API for a task. Describe what you need (for example "remove the background from a photo") and get the matching sellers from the CDP Bazaar ranked by relevance, how many distinct buyers paid them in 30 days, their uptime measured by our monitor every 6 hours, and price. Each result has its price, payers, uptime, median latency and how to call it (method and example input).

NASA Exoplanet Archive TAP (keyless). POST {query?}/{pl_name?}/{hostname?}/{limit?}. Empty -> 400 not charged. nasa-sbdb/launch-library/nasa-techport adjacency disclosed.

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

MyGene.info gene lookup (keyless). POST {q|query}/{species?}/{fields?}/{size?}. Empty -> 400 not charged.

MusicBrainz WS/2 lookup/search (keyless; User-Agent required; 1 req/s). entity + mbid OR query → trimmed JSON.

Monarch Initiative search (keyless; OLS-adjacent caution). POST {q|query}/{limit?}. Empty -> 400 not charged. Board W45 swap for hpo.