Every agent-payable API.

Stress-test a product, feature, API, implementation, or business proposal before meaningful investment. ProposalCheck evaluates the core thesis, assumptions, differentiation, feasibility, economics, scope, dependencies, validation strategy, kill criteria, and recommended build sequence, then returns a structured green-light, revise, or rethink decision.

Which free Sentinel-1/2, ASTER, and Landsat scenes cover a target area, plus a geological remote-sensing guide, for exploration and geology agents. Returns scene availability and which sensor maps which alteration mineral.

Mineral prospectivity assessment for any region, for exploration and geology agents. Combines USGS MRDS deposit inventory, geochemical anomaly data, and AI geological synthesis to rank what a region is likely to host.

TVL of any DeFi protocol broken down by chain (DeFiLlama): total + per-chain USD, category, url. Param: protocol (slug from defillama.com/protocol/<slug>, e.g. aave, uniswap, aerodrome).

Provider change-event feed over 7 federal sources: new NPI enumerations, newly billing Medicare, enrollment pending, address changes, deactivations, CLIA lab certificates, ownership changes (CHOW), mammography facility cert changes, and hospital capex jumps. Answers: what changed in my territory since I last looked? Filter by type (comma-separated), state, since (YYYY-MM-DD), npi, ccn; page via next_cursor (keyset). 85k+ events, refreshed twice-weekly to quarterly by source.

One-call dossier of everything Healthparse knows about a provider NPI: NPPES identity, taxonomy and practice address; Medicare ordering-and-referring privileges; NPI exclusion screen (OIG LEIE, GSA SAM, state Medicaid, state boards); change-event history; Medicare Part B utilization and Part D prescribing summaries; Open Payments totals by year; hospital affiliations with star ratings; MIPS quality scores. Absent legs say so explicitly. Records as filed; not a consumer report.

Public GitHub facts: repo stats with latest release, a user/org profile, or a star-ranked repo search

Public holidays for a country and year (ISO-2 code) — what a scheduling agent needs before proposing a date

Fetch one public HTTPS HTML, JSON, XML, or text source and return normalized agent-ready text, optional literal-match excerpts, a content hash, and an Ed25519-signed receipt. No account or API key.

Public URL research brief: 8 bullets plus caveats. Use when an agent needs a fast read of one page before acting.

Public holidays — Public holidays for a country & year.

Biomedical literature search over PubMed (NCBI, 37M+ citations): titles, journals, authors, dates and DOIs

Returns all metadata fields plus the full transcript and rights-holder contact information for licensing. Requires declaring an intended use, which is logged as a licence declaration. Use when you need the full transcript or want to start a licensing conversation with the creator. Payment is distributed to the content's rights holders on-chain; JubJub retains a 3% platform fee. Browse the full catalogue and search it for free at JubJub's MCP: https://api.jubjubapp.com/v2/mcp

Unlocks all structured metadata for a single piece of content: full questions answered, complete training caption, cinematographic analysis, provenance score, entity extraction, and chapter markers. Idempotent within 24 hours. Call this before purchase_content. Payment is distributed to the content's rights holders on-chain; JubJub retains a 3% platform fee. Browse the full catalogue and search it for free at JubJub's MCP: https://api.jubjubapp.com/v2/mcp

PyPI package metadata: version, summary, author, license, requires-python, classifiers, project URLs and latest-release files. Pass a package name. Keyless.

Check Python for syntax errors, lint and type mistakes, unsafe constructs and hardcoded credentials, and against the examples the caller supplies, without running it.

Run Python in a throwaway container with no network and a read-only filesystem, and report what it did against the caller's examples.

Return corrected Python for code that fails those checks: the fix is applied and re-checked, and only returned when it holds.

Python code execution as a service for agents: send code, get stdout/stderr/exit code. Isolated, hard limits. $0.01 USDC x402 Base.

QR code generator — encode text, URLs, payment URIs, or arbitrary UTF-8 data as base64-encoded SVG or PNG in a JSON envelope.

Identicon generator — turn an exact UTF-8 seed into a deterministic mirrored avatar returned as base64-encoded SVG or PNG in JSON.

Generate a QR code (PNG base64) from text/URL/WiFi/vCard with size and error-correction control.

QR codes for agents at $0.001 USDC. Call when you need a PNG or SVG QR from text or a URL for tickets, onboarding links, or receipts—without installing a QR library. Returns a self-contained data URI plus SHA-256 receipt via x402 on Base; the encoded destination is never fetched or validated. No API key, no subscription.

Generate a PNG QR code URL for payment and onboarding payloads (upstream probed live)

QR code API: any text or URL (up to 2000 characters) to a scannable PNG QR code, generated on our own hardware in milliseconds, returned base64. Set size 128-1024px. For payment links, tickets, onboarding flows, and print pipelines.

QR code generation returning clean scalable SVG: any text/URL up to 1800 chars, selectable error-correction level (L/M/Q/H).

Qualified French B2B leads in one call: finds businesses by activity+city (Google Maps via residential IP -> phone, website, rating) then CROSS-REFERENCES each with the official company registry (SIREN, legal form, NAF, directors, age, status) and scores them HOT/WARM/COLD. A…

Quarterly estimated-tax safe harbor (Form 1040-ES): the required annual payment and per-quarter amount to avoid an underpayment penalty.

Use AI to extract specific data points from a brand's website. The AI will crawl the website and extract the requested information based on the provided data points.

Query JSON with a JMESPath expression — extract, filter, project, and reshape nested data with the AWS-standard query language. Deterministic JSON extraction.

Pull-based work queue with leases; timed-out leases requeue.

Is this counterparty safe to pay? Screens the address against the OFAC sanctions list, reads its ERC-8004 reputation with coordinated feedback filtered out, and returns an explainable 0-100 trust score with a proceed / hold / block recommendation. Reports insufficient_data rather than guessing when the evidence is not there.

Submit a project to ByShovel for a custom research / data-acquisition quote. Lands in the same intake queue as the web form.

RAVN cross-chain swap execution, incl. native Bitcoin as source or destination

RAVN cross-chain swap quote, incl. native Bitcoin as source or destination

Cryptographically-signed Bitcoin trading-performance data you can verify: an 18-month monthly P/L, win-rate, and cumulative-return series from the RC Quantum algorithm's live-parallel shadow — real exchange fills, Ed25519-proofed.

Hourly Ed25519-signed BTC market-state intel: directional bias with conviction, regime label and score, technical levels (EMA20/50, ATR, RSI, 7D/30D), and 72h large on-chain transfer activity. Data, not advice.

ROI from entry price and resolution payout on a binary share. Call when post-resolution performance of a prediction-market fill. Returns roi and profit as deterministic JSON for $0.001 USDC via x402 on Base. First-party local math only—no RPC, live market feed, API keys, storage, or mediagen. Advisory only; the caller owns capital, risk, and production controls.

Fetch any public RSS or Atom feed and return clean JSON: feed title plus items with title, link, published date, and plain-text summary (no XML parsing needed). Query: url (feed URL), limit (1-50, default 20). Use to monitor news, blogs, releases, changelogs, or podcasts on a schedule.

Per-vault RWA risk profile — admin/freeze control + exit-liquidity

Call when you need open GitHub issues with a parsed USD bounty (Algora/$/USD in title or labels). Optional minUsd and q filter the list. Not a generic GitHub search clone.

Trending topics and breaking stories across tech, dev, science, business, culture, politics, and entertainment — aggregated from multiple public sources with regional and time-window filters. Flat sub-cent price per call; the cheap first stop for what is happening right now.

Random fortune — fixed price; x402 exact or MPP one-shot

Range Header Parse: Range Header Parse parses one bounded HTTP byte range into start and end offsets from bounded caller-supplied values without an external provider. Call Range Header Parse before accepting, caching, redirecting, or retrying a caller-supplied web response. Returns normalized web evidence, the computed finding, and an explicit pass or advisory status for Range Header Parse as versioned deterministic JSON. Price: $0.001 USDC via x402 on Base. First-party, stateless, memory-only…

PolySignal ranks current Polymarket opportunities by EV, confidence, size hint, risk, and staleness for agent research workflows.

Rank candidate tool names by token overlap with a query. Call when routing a natural-language intent to top SKU names offline. Returns ranked tool_name scores as deterministic JSON for $0.001 USDC via x402 on Base. First-party local math only—no RPC, live market feed, API keys, storage, or mediagen. Advisory only; the caller owns capital, risk, and production controls.

Ranked market anomalies: every tracked precious-metals and energy series scored by how far its latest reading sits from its own history — a composite of level extremity, 30-day z-score, and move velocity — sorted most-abnormal-first with record context. One call returns a scored anomaly watchlist that the free /snapshot omits. Optional ?limit=N for the top-N.

Ranked cross-chain liquidation-distress index — every near-liquidation position the farm's multi-venue fleet is watching (Aave/Morpho/Comet/Moonwell across Base, Ethereum, HyperEVM), scored by proximity×size. A byproduct no one without the fleet can produce. Query: ?chain, ?minScore, ?limit.

Ranked directory of x402 endpoints by measured live quality (not by on-chain volume). Includes score, grade, latency and pricing per endpoint.

Check whether a domain appears on a known ransomware group's victim/leak-site list, and whether pre-ransomware credential harvesting was detected beforehand. Call to assess active ransomware exposure for a domain, not just historical breach history.