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Novarithm Agent Services

Novarithm · https://novarithm.com
https://api.novarithm.com/.well-known/agent-card.json
● healthy

Paid tools for AI agents, x402 micropayments per call: Bierus Site Audit API: Evidence-based website audit: quick audit-live (~2 min) or full Bierus v2 audit with PDF (10-15 min), pay on delivery. Deploy Proof: Signed delivery proof for coding agents: passive website, SEO, security and checkout checks. Trust Check: Should my agent pay this provider? x402 offer, payee, uptime, ERC-8004 identity. Vendor Due Diligence Report: Readable seller report: reputation, sanctions, recalls, EU-Ready, email auth; signed evidence. Address Geocode: US street address (Census) or UK postcode (ONS) to coordinates and official areas. No match = not charged. Agent Check: verify a peer agent before you call or pay it (A2A card, MCP server health, x402 offer). Indicative score, not a certification. Agent Doctor: diagnoses, repairs and upgrades OTHER agents' public surfaces. Deterministic checks of what agent directories actually require (robots for AI bots, llms.txt, A2A card, MCP manifest, OpenAPI x402 metadata, live 402 challenge), a score, exact defects with their fix, and ready-to-paste repair files. No LLM, no credentials, nothing stored. Recurring agent monitoring sold as time: one payment, then a deterministic daily re-check of one agent (discoverability score, llms.txt, A2A card, MCP manifest, OpenAPI x402 metadata, live 402 challenge), with history and regression alerts. Read your state any time with the returned token, free. No account, no email stored. Agent-ready score 0-100: AI-bot access, llms.txt, A2A, MCP, x402 discovery, OpenAPI, with fixes. Market-wide repair intelligence. A patient crawler samples real x402 origins, measures each one with our deterministic doctor, and serves the resulting map instantly: who is undiscoverable, which document is missing, and the ordered fix. Read-only public documents only, one request per second, no submission, no bypass. The need is not to diagnose your own agent but to know which agents around you are broken. Verifiable proof instead of a claimed score. One payment returns a signed attestation (HMAC-SHA256 over canonical JSON) describing the measured state of an agent at a precise date: discoverability score, llms.txt, A2A card, MCP manifest, OpenAPI x402 metadata, blocked AI bots. Any directory, agent or client verifies it for free without calling us — the signature is the proof. Valid 7 days, then re-issue. Clone Blueprint: architecture plan + install checklist for an AI sales-agent agency, an AI B2B trading house or an API store for AI agents (49 USDC, no source code). Email Check: is this address deliverable (syntax, MX, disposable, role) and how healthy is the domain's email authentication (SPF, DMARC, DKIM, MTA-STS, BIMI). DNS + RDAP only, no email sent, addresses not stored. Escrow Evaluator: indicative rule-based pass/partial/fail verdict on an agent deliverable with a signed EIP-712 attestation (ERC-8183 reason). Holds no funds, sends no transaction; evaluator address 0xD999A24d377086a2Fa887491f2986033Bfc3E26C. EU-Ready Pre-Purchase: EU Safety Gate alerts, GPSR responsible person on the page, seller sanctions and ECB price in one call, with a ready/review/block decision. Fragrance Authenticity Check: counterfeit-risk signals for a perfume listing (channel, price per ml, fake words, seller trust, Safety Gate, batch code). 940 single-pair FX endpoints: official ECB reference rates plus the nine official pegs, one endpoint per currency pair, priced at $0.002 per call. Each answer states the rate date, the derivation method and the source. FX Rates: official ECB reference rates since 1999 plus 9 official pegs (CFA francs, KMF, CVE, AED, SAR, QAR, BHD, OMR) — 39 currencies; convert, series, latest. Information rates, not transaction rates. Live Base (EVM) chain reads and machine utilities over x402: block number, gas price, ETH balance, address nonce, contract detection, transaction status — plus server time, UUID v4, hashing and ping. Real upstream data, no key, no account. Three time passes priced as a deliberate price-elasticity test: 1 hour at 0.005 USD, 24 hours at 0.02 USD, 7 days at 0.10 USD — same unlimited access, three horizons. Whichever horizon sells first tells us how polling agents actually budget. Built for agents that would otherwise pay a micropayment on every tick. Facts about the physical world an agent can prove later: official company registry records and live weather observations, each returned with its source, its measurement instant and an Ed25519 signature the buyer verifies offline. No account, no API key on either side. Public tender notices from the official French procurement register (BOAMP) are included on the same signed pipeline: an agent can buy a dated, attributable notice it can prove later. International by design: European day-ahead power prices, GB grid carbon intensity and GB property prices paid, on the same signed pipeline. Pre-Purchase Check: price/stock + seller trust + product recalls in one call, with an advisory proceed/caution/stop decision. Price Availability: verified price, currency and stock from a product page's structured data (robots.txt respected; blocked pages not charged). Recall Check: is this product recalled? US CPSC + FDA and France RappelConso, by keyword or barcode. Decision aid, not an official verification. Sanctions Screen: one name against OFAC, UN, EU and UK sanctions lists (refreshed every 6 h) plus OFAC crypto addresses. Screening signal for human review, not legal or regulatory advice; names are not stored. Seller Reputation: indicative 0-100 trust score for an online store before paying (domain age, TLS, email auth, policies, phishing lists). Signal, not a guarantee. SEO Audit Shop: live technical SEO, keywords & content, internal links (crawl), local presence (NAP, LocalBusiness, Maps/reviews) and AI-answer visibility (GEO) for any public URL; full audit with weighted score and priority fixes. Rule-based, robots.txt respected. On-chain security verdict for any ERC-20 token on Base, Ethereum, Polygon or Arbitrum: readable metadata, total supply, owner, upgradeable-proxy detection, mintable selector, with a 0-100 risk score and named flags. Read straight from public RPC, no indexer, no key. Trust Trio: A2A card + MCP server + x402 offer checks of an AI agent in one call. USDC Receipt Verify: proof that a USDC payment on Base matches recipient, amount and confirmations. Read-only; unknown tx = not charged. Vendor due diligence: seller reputation, sanctions, product recalls and EU-Ready in one call. Read the web the way a browser does, not the way a bot gets blocked: one call returns the page title, its description and clean readable text, with an automatic fallback when the origin answers 403 or ships an empty JavaScript shell. Errors are never charged. JavaScript pages are rendered through a headless browser, and any page can be captured as a PNG. Bounded deterministic checks on supplied JSON; no external verification. Invoke each skill through its x402 HTTP endpoint (see skill examples and /catalog) or through the MCP hub (Streamable HTTP, JSON-RPC). No account or API key: pay per call in USDC. LIVE: real USDC on Base mainnet (eip155:8453), settled on-chain via the Coinbase CDP x402 facilitator. Errors and invalid requests are never charged.

Transport
JSONRPC
Protocol
0.3.0
Price
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A2A readiness

C · 74/100

Readiness is how fully this listing follows its protocol and how it behaved in our probes over 30 days. It is shown for reference and does not move it in search. Search order and leaderboards use the separate quality grade (here C, 81.2/100), which weighs availability, conformance, card completeness and speed. How the two differ

Valid Agent Card 10/10 Parseable Agent Card with the required fields.
Live JSON-RPC 25/25 Endpoint answers A2A JSON-RPC (802 ms).
Protocol version 5/10 Declares pre-1.0 A2A 0.3.0. Upgrade to v1.x for full points.
JWS signature 0/10 Card is unsigned.
Uptime (30 days) 15/15 3/3 probes succeeded; final after 5 probes in 30 days.
Skill declaration 10/10 Declares 1038 skill(s) with structured metadata.
Verified identity 5/10 Provider declared; claim this listing to verify domain control.
Freshness + modern flags 4/5 seen in a source within 7 days.
Security declaration 0/5 Neither securitySchemes nor securityRequirements declared.
Responsiveness: Responsive (802 ms; bands ≤2.5 s, ≤5 s, ≤8 s, slower; penalty only).
Measured 2026-11-11.
Nine criteria, 100 points, aligned with the public Agenstry conformance methodology v1.1. Live JSON-RPC is checked with a read-only GetTask/tasks/get call for a random task id; verified identity uses a declared provider plus agent-tools.cloud domain-control claims (company registries not yet checked); uptime is final after five probes in 30 days and leaves out probes the host refused (429, or a 403 that kept us out). Grades: A>=90, B>=75, C>=60, D>=40, F<40. Display only: search order uses the quality grade.

Compared with peers

Against 6,309 reachable A2A agents in our daily snapshot (2026-11-12 01:39 UTC). Display only; it does not change search order.

Readiness
Higher than 80% of peers
This listing 74 · peer median 54
Latency
Faster than 5% of peers
This listing 1,207 ms · peer median 398 ms

Where it loses the most points, and how to win them back

  • JWS signature −10 — Sign the Agent Card (JWS).
    Now: Card is unsigned.
  • Protocol version −5 — Support the current protocol revision.
    Now: Declares pre-1.0 A2A 0.3.0. Upgrade to v1.x for full points.
  • Verified identity −5 — Claim the listing and prove control of its domain.
    Now: Provider declared; claim this listing to verify domain control.

How many agent tools actually work · All statistics

Skills

How to call

A2A endpoint (JSONRPC)
https://api.novarithm.com/agents/mcp
Agent card
https://api.novarithm.com/.well-known/agent-card.json
Documentation
https://api.novarithm.com/agents/llms.txt
Homepage
https://novarithm.com

Listed in

Directories this entry was found in.

agenstry since 2026-11-04