The newest arXiv submissions in astro-ph (Astrophysics). Costs $0.002 USDC per call via x402.
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650,527 tools. Updated 2026-10-14 05:28
"Astro" matching MCP tools:
- Fetch a time-series ephemeris for a small body (asteroid or comet) or spacecraft from JPL Horizons — RA/Dec, distance, and apparent magnitude over a span, optionally with observer-relative altitude/azimuth. This covers objects the in-process major-body set cannot. The designation is passed to Horizons verbatim, so it must be in a form Horizons resolves to a single record: a numbered asteroid takes a trailing-semicolon record lookup (e.g. "433;" for Eros, "1;" for Ceres), and a periodic comet takes the DES + closest-apparition form (e.g. "DES=1P;CAP" for Halley). Spacecraft take their negative SPK-ID. Anything else goes through the Horizons name search: a bare name matching nothing (e.g. "433 Eros") or several records (e.g. "1P/Halley") is rejected, but one matching a single object succeeds even when that object is not the one meant — "Eros" resolves to Kerberos, a moon of Pluto — so compare `target_name`, the object Horizons resolved, with the one intended. `start` and `stop` are ISO 8601 UTC and `stop` must be after `start`; `step` is a count plus a unit of m, h, d, mo, or y, such as "1d", "1h", or "10m". Supplying observer latitude/longitude yields topocentric coordinates and adds alt/az — supply both or neither. This is a gated, network-backed extension (JPL Horizons is keyless but rate-limited and best-effort); large spans truncate inline at 200 rows, and the truncation notice names the exact `start` to resume from — one step past the last row returned, because Horizons includes the start instant in its output — so re-calling from there continues the series without repeating a sample. Splitting the range into smaller adjacent spans works too; keep the same step either way so no sample is lost.ConnectorNo auth
- Write WHOLE files DIRECTLY — YOUR model generates the code, Kleap stores, builds and deploys it as-is. To change something in a file that ALREADY EXISTS, use edit_files instead (read_files → edit_files): it replaces just the lines you name, while write_files makes you retype the entire file and silently drops whatever you leave out — on a 30KB shared layout that is how headers and footers get wiped. No Kleap-AI step, so what ships is byte-for-byte what you wrote — the right choice when a phrase, a URL or a schema must be exact. Publishing still audits the result (see publish_app). Best for scaffolding exact pages/components — e.g. programmatic-SEO routes. Astro paths (src/pages/*.astro, src/data/*.json, src/components/*.astro, public/*). Overwrites by path. NPM PACKAGES: do not write package.json (the build replaces it) — the build installs whatever your code IMPORTS, so `import { jsPDF } from "jspdf";` is all it takes. Supported on import: @tiptap/*, jspdf, pdf-lib, html2canvas, papaparse, file-saver, jszip, @ffmpeg/*, howler, wavesurfer.js, browser-image-compression, react-dropzone, recharts, chart.js, d3, @tanstack/*, react-hook-form, three, @react-three/*, leaflet, maplibre-gl, gsap, framer-motion, zustand, date-fns, react-markdown, axios, socket.io-client, radix-ui/*, next-themes, lucide-react, @tabler/*, openai, @ai-sdk/*; anything else is refused at build with a message naming it. A client-side router is never the answer — a route is a FILE (src/pages/about.astro → /about). IMAGES AND BINARIES: set encoding:"base64" on the file and send the bytes — that is how you put a logo, a photo, an OG image, a favicon or a font on the site (png/jpg/webp/svg/ico/mp4/woff2/pdf, 512KB max each decoded). Without it you can only write text, and a site with no images looks unfinished. To ADD an image from a text prompt WITHOUT sending any bytes (a real photo's base64 is too big to emit reliably), use generate_image — Kleap generates it and stores it for you. To REMOVE a page or asset, use delete_files — overwriting it with empty content leaves a URL that answers 200 with nothing, which is worse than a 404. DATA & ACCOUNTS: write_files only STORES files — it cannot provision the Kleap Database, so DB or auth code pushed here has no backend and silently does nothing. Stand the feature up with modify_app first, then edit those pages here. After writing, call publish_app to build & go live.ConnectorDestructiveOAuth
- Write WHOLE files DIRECTLY — YOUR model generates the code, Kleap stores, builds and deploys it as-is. To change something in a file that ALREADY EXISTS, use edit_files instead (read_files → edit_files): it replaces just the lines you name, while write_files makes you retype the entire file and silently drops whatever you leave out — on a 30KB shared layout that is how headers and footers get wiped. No Kleap-AI step, so what ships is byte-for-byte what you wrote — the right choice when a phrase, a URL or a schema must be exact. Publishing still audits the result (see publish_app). Best for scaffolding exact pages/components — e.g. programmatic-SEO routes. Astro paths (src/pages/*.astro, src/data/*.json, src/components/*.astro, public/*). Overwrites by path. NPM PACKAGES: do not write package.json (the build replaces it) — the build installs whatever your code IMPORTS, so `import { jsPDF } from "jspdf";` is all it takes. Supported on import: @tiptap/*, jspdf, pdf-lib, html2canvas, papaparse, file-saver, jszip, @ffmpeg/*, howler, wavesurfer.js, browser-image-compression, react-dropzone, recharts, chart.js, d3, @tanstack/*, react-hook-form, three, @react-three/*, leaflet, maplibre-gl, gsap, framer-motion, zustand, date-fns, react-markdown, axios, socket.io-client, radix-ui/*, next-themes, lucide-react, @tabler/*, openai, @ai-sdk/*; anything else is refused at build with a message naming it. A client-side router is never the answer — a route is a FILE (src/pages/about.astro → /about). IMAGES AND BINARIES: set encoding:"base64" on the file and send the bytes — that is how you put a logo, a photo, an OG image, a favicon or a font on the site (png/jpg/webp/svg/ico/mp4/woff2/pdf, 512KB max each decoded). Without it you can only write text, and a site with no images looks unfinished. To ADD an image from a text prompt WITHOUT sending any bytes (a real photo's base64 is too big to emit reliably), use generate_image — Kleap generates it and stores it for you. To REMOVE a page or asset, use delete_files — overwriting it with empty content leaves a URL that answers 200 with nothing, which is worse than a 404. DATA & ACCOUNTS: write_files only STORES files — it cannot provision the Kleap Database, so DB or auth code pushed here has no backend and silently does nothing. Stand the feature up with modify_app first, then edit those pages here. After writing, call publish_app to build & go live.ConnectorDestructiveNo auth
- The one-call "what is up right now" answer. For an observer location and instant, iterate every naked-eye solar-system body (and, with include_stars, the bundled bright stars), compute altitude and azimuth, keep those above the horizon, rank them brightest-and-highest first, and attach a plain-language visibility note to each, along with its angular distance from the Sun. The whole sky is gated by the Sun's altitude into daylight / civil / nautical / astronomical twilight / dark, returned alongside the list, and each note says when daylight, civil twilight, or the Sun's glare hides or dims that body. `time` is a single evaluation instant, not a window — for "tonight" pass a time after astronomical dusk (use astronomy_get_rise_set on the sun to find it). Default elevation 0 m; use min_altitude to skip objects grazing the horizon. This server does not geocode — resolve coordinates upstream first; pass an IANA timezone for observer-local times on each body.ConnectorNo auth
- Generates framework-aware code fixes (Laravel Blade, Next.js App/Pages Router, HTML, PHP, Astro, Svelte) for missing titles, meta descriptions, canonical URLs, JSON-LD schemas, and WebMCP discovery links with unified diff preview. USAGE GUIDELINES: - Use after audit tools detect specific SEO, schema, or WebMCP issues in a source file. - Do NOT use for general code refactoring unrelated to metadata, schema, or SEO tags. - Always run 'seo_validate_code_fix' immediately after applying changes to verify syntax and prevent duplicate tags. BEHAVIORAL TRANSPARENCY: - Non-destructive by default: Returns unified diff preview without modifying files. - Modifies disk ONLY when 'applyDirectly' is explicitly set to true.ConnectorNo auth
Matching MCP Servers
- AlicenseAqualityBmaintenancePython/stdio MCP connector providing timestamped crypto intelligence for ten assets: prediction-market intelligence, market regimes, sentiment, funding, liquidity, asset rankings, and component-score explanations. Public access without signup, API keys, or trial activation; no trade execution.42MIT
- FlicenseNot gradedqualityBmaintenanceEnables Claude and other MCP clients to compute Vedic astrology chart facts locally with a private Swiss Ephemeris engine — positions, divisional charts, dashas, transits, Shadbala, Ashtakavarga, Jaimini analysis, birth-time sensitivity, and PDF-ready structured reports. All calculation runs on the user's own machine, keeping birth data local while the interpretation layer reasons over validated chart facts rather than inventing them.-
Matching MCP Connectors
Astronomical logical calculator for AI clients.
Natal charts, transits, kundli, dashas, panchang, Gun Milan. JPL DE440, no LLM, hashed.
- Check current API key status: tier, credit balance, rate limits, monthly cycle reset. Run this BEFORE invoking expensive endpoints (Tier 4+ at 100+ credits, Tier 6/7 at 500-5000 credits) to confirm the user has budget. Returns plain-text human-readable summary.ConnectorNo auth
- Check current API key status: tier, credit balance, rate limits, monthly cycle reset. Run this BEFORE invoking expensive endpoints (Tier 4+ at 100+ credits, Tier 6/7 at 500-5000 credits) to confirm the user has budget. Returns plain-text human-readable summary.ConnectorNo auth
- Check current API key status: tier, credit balance, rate limits, monthly cycle reset. Run this BEFORE invoking expensive endpoints (Tier 4+ at 100+ credits, Tier 6/7 at 500-5000 credits) to confirm the user has budget. Returns plain-text human-readable summary.ConnectorNo auth
- Check current API key status: tier, credit balance, rate limits, monthly cycle reset. Run this BEFORE invoking expensive endpoints (Tier 4+ at 100+ credits, Tier 6/7 at 500-5000 credits) to confirm the user has budget. Returns plain-text human-readable summary.ConnectorNo auth
- Check current API key status: tier, credit balance, rate limits, monthly cycle reset. Run this BEFORE invoking expensive endpoints (Tier 4+ at 100+ credits, Tier 6/7 at 500-5000 credits) to confirm the user has budget. Returns plain-text human-readable summary.ConnectorNo auth
- Check current API key status: tier, credit balance, rate limits, monthly cycle reset. Run this BEFORE invoking expensive endpoints (Tier 4+ at 100+ credits, Tier 6/7 at 500-5000 credits) to confirm the user has budget. Returns plain-text human-readable summary.ConnectorNo auth
- Check current API key status: tier, credit balance, rate limits, monthly cycle reset. Run this BEFORE invoking expensive endpoints (Tier 4+ at 100+ credits, Tier 6/7 at 500-5000 credits) to confirm the user has budget. Returns plain-text human-readable summary.ConnectorNo auth
- Check current API key status: tier, credit balance, rate limits, monthly cycle reset. Run this BEFORE invoking expensive endpoints (Tier 4+ at 100+ credits, Tier 6/7 at 500-5000 credits) to confirm the user has budget. Returns plain-text human-readable summary.ConnectorNo auth
- Check current API key status: tier, credit balance, rate limits, monthly cycle reset. Run this BEFORE invoking expensive endpoints (Tier 4+ at 100+ credits, Tier 6/7 at 500-5000 credits) to confirm the user has budget. Returns plain-text human-readable summary.ConnectorNo auth
- Check current API key status: tier, credit balance, rate limits, monthly cycle reset. Run this BEFORE invoking expensive endpoints (Tier 4+ at 100+ credits, Tier 6/7 at 500-5000 credits) to confirm the user has budget. Returns plain-text human-readable summary.ConnectorNo auth
- Check current API key status: tier, credit balance, rate limits, monthly cycle reset. Run this BEFORE invoking expensive endpoints (Tier 4+ at 100+ credits, Tier 6/7 at 500-5000 credits) to confirm the user has budget. Returns plain-text human-readable summary.ConnectorNo auth
- Check current API key status: tier, credit balance, rate limits, monthly cycle reset. Run this BEFORE invoking expensive endpoints (Tier 4+ at 100+ credits, Tier 6/7 at 500-5000 credits) to confirm the user has budget. Returns plain-text human-readable summary.ConnectorNo auth
- Check current API key status: tier, credit balance, rate limits, monthly cycle reset. Run this BEFORE invoking expensive endpoints (Tier 4+ at 100+ credits, Tier 6/7 at 500-5000 credits) to confirm the user has budget. Returns plain-text human-readable summary.ConnectorNo auth
- Check current API key status: tier, credit balance, rate limits, monthly cycle reset. Run this BEFORE invoking expensive endpoints (Tier 4+ at 100+ credits, Tier 6/7 at 500-5000 credits) to confirm the user has budget. Returns plain-text human-readable summary.ConnectorNo auth
- Check current API key status: tier, credit balance, rate limits, monthly cycle reset. Run this BEFORE invoking expensive endpoints (Tier 4+ at 100+ credits, Tier 6/7 at 500-5000 credits) to confirm the user has budget. Returns plain-text human-readable summary.ConnectorNo auth