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.

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": {...}}.

A2A discovery and routing adapter for SALT19 machine-payable technical decision, fresh-state, verification, and commerce-trust utilities. Paid execution remains on the canonical x402 v2 product endpoints.

Four bounded evidence, context, document, and verification services with PCC receipts and x402 payment enforcement.

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 124 of 130 routes (the price list says which), 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

Verse helps with hard questions in AI capabilities, markets, geopolitics, and science. Ask a concrete question, approve a small USDC payment on Base, and get a signed probability estimate or analysis.

Verify whether an official SEC filing supports a financial claim. Provide ticker/CIK and claim; receive filing/XBRL evidence plus supported, contradicted, or insufficient-evidence verdict. 10-Q / 10-K / XBRL fact verification. Not a data feed, stock picker, or investment advice.

Verify whether an official SEC filing supports a financial claim. Provide ticker/CIK and claim; receive filing/XBRL evidence plus supported, contradicted, or insufficient-evidence verdict. 10-Q / 10-K / XBRL fact verification. Not a data feed, stock picker, or investment advice.

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.

Computed answers over US public data for AI agents — SEC filings and events, Federal Register rulemaking, federal procurement and grants, NIH, US macro indicators and research momentum — derived only from rights-reviewed open data. Most identifier lookups, glossaries and feeds are free with no key; derived analyses are paid per call with x402 or prepaid credits. Strict JSON with public provenance.

Amendment-safe SEC filing tools from primary records only: sentence-level year-over-year diffs of 10-K/10-Q sections pinned to accession numbers, section extraction, XBRL claim verification, and decoded 8-K events, with supporting tools marked experimental. Accuracy measured on a public golden set …

Japan-specialized intelligence gateway for A2A agents. Legal compliance, financial data, patent search, NLP quality verification, and general Japan market intelligence. 24/365 autonomous operation.