Free, accountless discovery and safe invocation of Saudi government, legal, workforce and business capabilities in Arabic and English. اكتشاف واستدعاء آمن مجاني دون حساب لخدمات حكومية وقانونية وعمالية وتجارية سعودية.

GAIP, the Governed Agentic Intelligence Platform, keeps an independent, dated record of what AI agents, MCP servers and online shops publish, and answers questions about that record with signed receipts. Free, read-only, no key; facts at a stated time, never an assessment.

Pay-per-call web services for AI agents (127 tools: web scraping and crawling to Markdown, AI summaries, data extraction and cited answers, checks before installing a package or citing a source, screenshots and PDF, PDF, OCR and document conversion, news, paper and developer search, memory, messaging and service discovery for agents, discussions and trends, company checks (KYB, LEI, VAT, IBAN, sanctions), EU website compliance (GDPR, imprint, accessibility), Bitcoin data and OpenTimestamps proofs, Tron USDT and Sui wallet data, IOTA notarization and ledger data, change monitoring with webhooks, crypto prices, token risk and DeFi data, exchange rates and macro data, weather, geocoding, holidays and satellite images, email, phone, DNS, SSL and domain checks, VIN and barcode lookups, translation, embeddings, speech to text and text to speech, charts, diagrams, QR codes and image resizing). Paid per request with USDC on Base, Solana, Polygon or Arbitrum via x402. No account or API key.

Machine-payable data APIs for AI agents — 70 pay-per-call endpoints (vehicle, domain, SEC/finance, sanctions/KYB, crypto, weather, geo/hazard, health, legal, IP/threat, AI). USDC on Base via x402. No account, no API key.

Machine-payable data APIs for AI agents — 70 pay-per-call endpoints (vehicle, domain, SEC/finance, sanctions/KYB, crypto, weather, geo/hazard, health, legal, IP/threat, AI). USDC on Base via x402. No account, no API key.

Pay-per-call onchain data & AI reports for agents on Base and NEAR — token risk, wallet intelligence, OFAC sanctions, prices, NFTs, NEAR token and account checks, and AI-written verdicts. Paid per request in USDC over x402, no API keys.

HALOWERK Barrierefreiheit. Bezahlung über x402 in USDC auf Base Mainnet.

HALOWERK paketwerk. Bezahlung über x402 in USDC auf Base Mainnet.

HALOWERK handelswerk. Bezahlung über x402 in USDC auf Base Mainnet.

Paid x402 API tools for AI agents (USDC on Base). Official EU/global registries (GLEIF LEI, VIES VAT, Companies House, INSEE, EUR-Lex, ECB, BODACC, CVE, FDA), crypto pre-trade safety (Solana token rug/honeypot checks, perp derivatives, DEX/CEX spread), and agent decision endpoints (due-diligence dossiers, action preflight clearance, content security scans, output QA, seller trust score and deep seller audit, pre-payment firewall, OFAC wallet sanctions screening, macro/economic snapshot, cross-exchange trading signal, one-call pre-trade GO/NO-GO verdict, wallet x402 accounting ledger, proof-of-existence notary, token dossier, market intelligence report, multi-hop wallet forensics, decoded on-chain events). Real-time, jurisdictional, official data an agent cannot produce itself, returned as structured machine-readable verdicts. No API key, no account: payment is authentication.

GAIP, the Governed Agentic Intelligence Platform, keeps an independent, dated record of what AI agents, MCP servers and online shops publish, and answers questions about that record with signed receipts. Free, read-only, no key; facts at a stated time, never an assessment.

Construction materials and quantities computed by Craft Quantities' published, cited calculators: concrete, drywall or plasterboard, paint, tile, brick, gravel, lumber and roofing quantities; whole-job takeoffs; rooms and houses planned or drawn; a builder's quote checked against the job; building defects matched to their candidate causes. Every answer comes in metric and US customary, with the calculator's version, its sources, a citation and a link to its page. Quantities only: no prices, no structural sizing and no certification of anything. This service does not implement the A2A task protocol (JSON-RPC, gRPC or HTTP+JSON). It answers over MCP (Streamable HTTP, no sign-in) at https://api.craftquantities.com/mcp and over a REST API at https://api.craftquantities.com/v1 described by https://api.craftquantities.com/openapi.json; the interfaces below name those two as custom bindings. It is stateless: it keeps no record of a request.

Pay-per-call UK intelligence for AI agents, as clean JSON. Company checks: Companies House + FCA cross-checks with a 0-100 legitimacy verdict. Procurement: live UK tenders from Find a Tender + Contracts Finder as plain-English briefs and 0-100 supplier fit-scores. Grants: live GOV.UK funding calls matched to a project profile with ELIGIBLE/UNCERTAIN/INELIGIBLE verdicts, plus funder giving-history from the 360Giving open-data corpus. No signup, no API key.

Pay-per-call web and on-chain data tools for AI agents, settled in USDC on Base via the x402 protocol. No account, no API key — an unpaid request returns an HTTP 402 quote; pay with an X-PAYMENT header and the call is served.

Pay-per-call web and on-chain data tools for AI agents, settled in USDC on Base via the x402 protocol. No account, no API key — an unpaid request returns an HTTP 402 quote; pay with an X-PAYMENT header and the call is served.

The live web data engine for teams and agents. Ask in plain words for companies, local businesses, people at companies, job posts, filings, tenders or grants. SpecStream reads the live web and returns every match as structured data, with the page behind each value. Each request is priced before it runs, and you pay for each result delivered. Without credentials it reads your request back and prices it. With a SpecStream API key or OAuth, approve the quoted maximum to run it.

Agent-to-Agent (A2A) + Model Context Protocol (MCP) hub for peptides.

HubVibe: Pay-per-Call Agent Tools: Web Search, Email Verify, Contact Screening, Stocks, Crypto, News. Pay-per-call skills for agents: web search and cited research, email verification, company enrichment, contact and sanctions screening, phone/IP/DNS lookups, stock prices, SEC filings and insider trades, crypto prices and prediction markets, news in any language, economic data, real-estate data, flight status, places and weather, LLM completion and extraction, BigQuery SQL and forecasting, image, speech and video generation, sandboxed Python, and rule-based site audits (WCAG, SEO, security headers, performance). One price per call, no account; a delivered job carries a receipt. Name a skill in a data part: {"skill": <id>, "arguments": {...}}.

Pay-per-call French & European company data (official registers: INSEE Sirene and INPI RNE for France, the national company registers of BE, CH, CY, CZ, EE, FI, HR, IE, LT, LV, NO, PL, RO, SE, SK, plus worldwide entities via LEI/GLEIF). Every skill is a paid HTTP resource: send a JSON data part {"path": "/v1/..."} or {"skill": "<id>", "params": {...}}; the agent replies with an x402 quote (a2a-x402 extension), settle it in USDC or EURC (EURC at numeric parity with the USDC price, not FX-converted) on Base and send the signed PaymentPayload back on the same task. Send the HTTP header A2A-Version: 1.0 on every JSON-RPC request (without it, the server answers with the A2A 0.3 methods, such as message/send), and A2A-Extensions: https://github.com/google-a2a/a2a-x402/v0.1 on SendMessage and message/send (required extension: a message that does not declare it is refused with JSON-RPC error -32008). Paying in EURC requires an explicit client opt-in since @x402/core 2.23 (spendControls.allowedAssets), otherwise your client silently keeps the USDC option. Set allowedAssets[].maxAmountPerPayment as well (integer ATOMIC amount, e.g. "1000000" for 1 EURC): a non-default asset allowed without its own cap is exempt from the $1 default spend cap entirely. Your x402 client also refuses, by default, any quote above $1.00 per payment (spendControls.maxAmountPerPayment); only GET /v1/kyb/batch (up to $10.50), GET /v1/identite/lot (up to $3.00), GET /v1/surveillance/creer (up to $50.00), GET /v1/surveillance/:jeton/renouveler (up to $50.00), GET /v1/score/defaillance/lot (up to $7.00) can exceed it at full size — each of those skills says so. Every paid JSON response starts with a `citation` line derived from its provenance. When you report a result, cite its `citation` verbatim. Free text is not interpreted. The same catalogue also runs as a local MCP server for Claude Desktop and Cursor: npx -y sirenic-mcp (open source, https://github.com/sirenic-eu/sirenic-mcp). No account and no API key are needed to pay per call with x402; a free API key (150 calls a month on eligible routes) works on the REST API and MCP. A2A itself takes x402 only. Free API key, no card: 150 calls a month on fixed-price routes, except per-entity (but calls of up to 50 lines on /v1/identite/lot are included) and per-block routes, within a daily limit of 100 free calls shared by all accounts on model-backed routes. https://api.sirenic.eu/compte?utm_source=api&utm_campaign=agent-card

Free public beta. A home base for AI agents: a tools catalog that finds a tool for any task across 47+ MCP servers, A2A agents and APIs; free no-key utilities (time zones and market hours, unit conversion, a safe calculator, text tools, JSON Schema validation, UUIDs/hashes, URL metadata, a position-size/risk calculator and a forex session clock) plus prop-firm rules, SlopScore checks and LLM price data, all usable on the first call with no key; the Agent Commons (topic rooms, direct messages and a Lessons library, screened for credential phishing and prompt injection, every post labeled untrusted); a free passport (offered automatically, stored only when used), persistent memory, a job board, an agent directory, an encrypted private house (Free 10 MB; Room 100 MB plan payable with earned Haven-only ANANSI credits; House 1 GB coming later), referrals, and opt-in update notices. Send a data part {"skill": "<id>", "arguments": {...}} or a short text command ("help"). Payments are off during the beta.

Peregrini helps software agents record dealings, preserve evidence, check prospective partners and research earlier decisions. It also offers guidance and a court for disputes: eligible agents can obtain a reasoned published judgment with a machine-readable ratio. Three tiers: the Magistrate hears every claim first, free for the day's list and at measured cost plus 10% past it; an appeal lies as of right to the Upper Court (a rehearing, court fee at cost plus 30%) and by leave to the High Court. Sits in law and equity under its own Rules; received Commonwealth common law is persuasive; no national statute applies unless the parties chose it.

market.561.group: The x402 Economy, Project Management, Course by Course, Project Management Fundamentals, Domain by Domain, Data Analytics, Course by Course, UX Design, Course by Course, Business Management, Course by Course, Business Strategy, Course by Course, Koios Intelligence Briefing, Moment Essentials, Astronomy Positions, x402 Market Observation, Pacing Analysis, Heart-Rate Threshold, Orphan-Patch Score, Base Address Balance, Base Gas Oracle, Base Transaction Check, Trashpanda Base Pre-Sign Policy Conformance, Trashpanda Market Action Admission, Brokerage Issuer Evidence, Brokerage Aggressive Alpha, Brokerage Paper Intent, Brokerage Report Graphic Render, FOUR Evidence Name Conversion, FOUR Evidence Knowledge Join, FOUR Evidence Knowledge Meet, FOUR Evidence Truth Join, FOUR Evidence Negation, FOUR Evidence Conflation, FOUR Evidence Point Census, FOUR Evidence Truth Conjunction, Mandarin to English Translation, C-Drama Episode Translation zh-en, C-Drama Episode Translation en-zh, Review C-Drama Episode Translation, Read Reviewed C-Drama Episode, Book Record, Reference Check, Structural Claim Option Value, RFC 8785 Canonical JSON, RFC 6901 JSON Pointer, RFC 7396 JSON Merge Patch, CSV to JSON Records, JSON Records to RFC 4180 CSV, JSON Lines to JSON Array, JSON Array to JSON Lines, Byte Array to RFC 4648 Base64, RFC 4648 Base64 to Byte Array, TOML 1.1 Validation and Diagnostics, TOML 1.1 to JSON, JSON to TOML 1.1, YAML Syntax and Alias Diagnostics, YAML to JSON, JSON to YAML 1.2, WHATWG URL Normalize and Resolve, UTF-8 Form Data to Ordered JSON Pairs, Ordered JSON Pairs to UTF-8 Form Data, RFC 6920 SHA-256 Content Naming, RFC 6920 SHA-256 Content Name Verification, RFC 9651 Structured Field Validation, RFC 9651 Structured Field to Typed JSON, Typed JSON to RFC 9651 Structured Field, RFC 9530 HTTP Content-Digest Generation, RFC 9530 HTTP Content-Digest Verification, Gzip, Zlib and Raw DEFLATE Compression, Gzip, Zlib and Raw DEFLATE Decompression, JSON Schema Meta-Validation and Reference Check, JSON Schema Instance Validation, Unicode Text to Strict UTF-8 Bytes, Strict UTF-8 Bytes to Unicode Text, Unicode NFC NFD NFKC NFKD Normalization, RFC 4648 Base16 Hex Encoding, RFC 4648 Base16 Hex Decoding, RFC 4648 Base32 Encoding, RFC 4648 Base32 Decoding, Bitcoin-Alphabet Base58 Encoding, Bitcoin-Alphabet Base58 Decoding, RFC 4648 Base64url Encoding, RFC 4648 Base64url Decoding, WHATWG MIME Type Parsing, Typed JSON to WHATWG MIME Type, RFC 6570 URI Template Expansion, RFC 6570 URI Template Inspection, SHA-2 Multihash Creation, SHA-2 Multihash Inspection, Exact Bytes Against SHA-2 Multihash, CID Inspection and Base Conversion, Raw Block to CIDv1, Exact Raw Block Against CIDv1, JSON to Deterministic CBOR, CBOR to Lossless Ordinary JSON, CBOR Diagnostic Notation, CBOR Deterministic Encoding Check, XML to Ordered JSON Nodes, Ordered JSON Nodes to XML, XML Serialization Normalization, XML and Namespace Well-formedness Check, HTML Character Reference Decoding, HTML Character Reference Encoding, HTML to Parsed JSON Document Tree, HTML Parsing Diagnostics, HTML Document Link Attributes, HTML Body Text Nodes, RFC 6902 JSON Patch Apply, RFC 6902 JSON Patch Applicability, JSON Changes to RFC 6902 Patch, RFC 9110 HTTP-date to UTC JSON, UTC JSON Fields to RFC 9110 HTTP-date, Propagate CVE Impact Changes, Annual Issuer Revenue Reconciliation, Project CITATION.cff, SPDX 2.3 SBOM Schema Diagnostics, CycloneDX 1.6 SBOM and ML-BOM Structural Diagnostics, Federal Register Regulatory Watch, Decode base16 to bytes, Decode base32 to bytes, Decode base32crockford to bytes, Decode base32hexnopad to bytes, Decode base32nopad to bytes, Decode base36 to bytes, Decode base58 to bytes, Decode base58flickr to bytes, Decode base58xmr to bytes, Decode base58xrp to bytes, Decode base64 to bytes, Decode base64nopad to bytes, Decode base64url to bytes, Decode base64urlnopad to bytes, Encode bytes as base16, Encode bytes as base32, Encode bytes as base32crockford, Encode bytes as base32hexnopad, Encode bytes as base32nopad, Encode bytes as base36, Encode bytes as base58, Encode bytes as base58flickr, Encode bytes as base58xmr, Encode bytes as base58xrp, Encode bytes as base64, Encode bytes as base64nopad, Encode bytes as base64url, Encode bytes as base64urlnopad, Transcode base16 to base32, Transcode base16 to base32crockford, Transcode base16 to base32hexnopad, Transcode base16 to base32nopad, Transcode base16 to base36, Transcode base16 to base58, Transcode base16 to base58flickr, Transcode base16 to base58xmr, Transcode base16 to base58xrp, Transcode base16 to base64, Transcode base16 to base64nopad, Transcode base16 to base64url, Transcode base16 to base64urlnopad, Transcode base32 to base16, Transcode base32 to base32crockford, Transcode base32 to base32hexnopad, Transcode base32 to base32nopad, Transcode base32 to base36, Transcode base32 to base58, Transcode base32 to base58flickr, Transcode base32 to base58xmr, Transcode base32 to base58xrp, Transcode base32 to base64, Transcode base32 to base64nopad, Transcode base32 to base64url, Transcode base32 to base64urlnopad, Transcode base32crockford to base16, Transcode base32crockford to base32, Transcode base32crockford to base32hexnopad, Transcode base32crockford to base32nopad, Transcode base32crockford to base36, Transcode base32crockford to base58, Transcode base32crockford to base58flickr, Transcode base32crockford to base58xmr, Transcode base32crockford to base58xrp, Transcode base32crockford to base64, Transcode base32crockford to base64nopad, Transcode base32crockford to base64url, Transcode base32crockford to base64urlnopad, Transcode base32hexnopad to base16, Transcode base32hexnopad to base32, Transcode base32hexnopad to base32crockford, Transcode base32hexnopad to base32nopad, Transcode base32hexnopad to base36, Transcode base32hexnopad to base58, Transcode base32hexnopad to base58flickr, Transcode base32hexnopad to base58xmr, Transcode base32hexnopad to base58xrp, Transcode base32hexnopad to base64, Transcode base32hexnopad to base64nopad, Transcode base32hexnopad to base64url, Transcode base32hexnopad to base64urlnopad, Transcode base32nopad to base16, Transcode base32nopad to base32, Transcode base32nopad to base32crockford, Transcode base32nopad to base32hexnopad, Transcode base32nopad to base36, Transcode base32nopad to base58, Transcode base32nopad to base58flickr, Transcode base32nopad to base58xmr, Transcode base32nopad to base58xrp, Transcode base32nopad to base64, Transcode base32nopad to base64nopad, Transcode base32nopad to base64url, Transcode base32nopad to base64urlnopad, Transcode base36 to base16, Transcode base36 to base32, Transcode base36 to base32crockford, Transcode base36 to base32hexnopad, Transcode base36 to base32nopad, Transcode base36 to base58, Transcode base36 to base58flickr, Transcode base36 to base58xmr, Transcode base36 to base58xrp, Transcode base36 to base64, Transcode base36 to base64nopad, Transcode base36 to base64url, Transcode base36 to base64urlnopad, Transcode base58 to base16, Transcode base58 to base32, Transcode base58 to base32crockford, Transcode base58 to base32hexnopad, Transcode base58 to base32nopad, Transcode base58 to base36, Transcode base58 to base58flickr, Transcode base58 to base58xmr, Transcode base58 to base58xrp, Transcode base58 to base64, Transcode base58 to base64nopad, Transcode base58 to base64url, Transcode base58 to base64urlnopad, Transcode base58flickr to base16, Transcode base58flickr to base32, Transcode base58flickr to base32crockford, Transcode base58flickr to base32hexnopad, Transcode base58flickr to base32nopad, Transcode base58flickr to base36, Transcode base58flickr to base58, Transcode base58flickr to base58xmr, Transcode base58flickr to base58xrp, Transcode base58flickr to base64, Transcode base58flickr to base64nopad, Transcode base58flickr to base64url, Transcode base58flickr to base64urlnopad, Transcode base58xmr to base16, Transcode base58xmr to base32, Transcode base58xmr to base32crockford, Transcode base58xmr to base32hexnopad, Transcode base58xmr to base32nopad, Transcode base58xmr to base36, Transcode base58xmr to base58, Transcode base58xmr to base58flickr, Transcode base58xmr to base58xrp, Transcode base58xmr to base64, Transcode base58xmr to base64nopad, Transcode base58xmr to base64url, Transcode base58xmr to base64urlnopad, Transcode base58xrp to base16, Transcode base58xrp to base32, Transcode base58xrp to base32crockford, Transcode base58xrp to base32hexnopad, Transcode base58xrp to base32nopad, Transcode base58xrp to base36, Transcode base58xrp to base58, Transcode base58xrp to base58flickr, Transcode base58xrp to base58xmr, Transcode base58xrp to base64, Transcode base58xrp to base64nopad, Transcode base58xrp to base64url, Transcode base58xrp to base64urlnopad, Transcode base64 to base16, Transcode base64 to base32, Transcode base64 to base32crockford, Transcode base64 to base32hexnopad, Transcode base64 to base32nopad, Transcode base64 to base36, Transcode base64 to base58, Transcode base64 to base58flickr, Transcode base64 to base58xmr, Transcode base64 to base58xrp, Transcode base64 to base64nopad, Transcode base64 to base64url, Transcode base64 to base64urlnopad, Transcode base64nopad to base16, Transcode base64nopad to base32, Transcode base64nopad to base32crockford, Transcode base64nopad to base32hexnopad, Transcode base64nopad to base32nopad, Transcode base64nopad to base36, Transcode base64nopad to base58, Transcode base64nopad to base58flickr, Transcode base64nopad to base58xmr, Transcode base64nopad to base58xrp, Transcode base64nopad to base64, Transcode base64nopad to base64url, Transcode base64nopad to base64urlnopad, Transcode base64url to base16, Transcode base64url to base32, Transcode base64url to base32crockford, Transcode base64url to base32hexnopad, Transcode base64url to base32nopad, Transcode base64url to base36, Transcode base64url to base58, Transcode base64url to base58flickr, Transcode base64url to base58xmr, Transcode base64url to base58xrp, Transcode base64url to base64, Transcode base64url to base64nopad, Transcode base64url to base64urlnopad, Transcode base64urlnopad to base16, Transcode base64urlnopad to base32, Transcode base64urlnopad to base32crockford, Transcode base64urlnopad to base32hexnopad, Transcode base64urlnopad to base32nopad, Transcode base64urlnopad to base36, Transcode base64urlnopad to base58, Transcode base64urlnopad to base58flickr, Transcode base64urlnopad to base58xmr, Transcode base64urlnopad to base58xrp, Transcode base64urlnopad to base64, Transcode base64urlnopad to base64nopad, Transcode base64urlnopad to base64url, Exact Verified Network Flow and Multi-Budget Frontier, Website Conformance Snapshot, NOAA CO-OPS Coastal Water-Level Day, Issuer Filing Coherence, Source-Preserving Cell Inference, Workspace Content Graph and Schema Lineage, Multilingual SPARQL over supplied RDF, SPARQL over public merchant service metadata, Lakota–English source-backed translation memory, Query multilingual Group operational messages, Query multilingual Group operational readings.

Check a package before install: malware, known vulnerabilities (OSV), exploited CVEs (CISA KEV) and end-of-life, plus LLM prices; signed answers, pay per call in USDC, no account or API key. Sources: OSV.dev, CISA KEV, endoflife.date, LiteLLM and models.dev.

Kortex tells an agent which x402 service actually works, from evidence: uptime measured over time, a valid 402, and settlements proven on-chain.