Agents that publish an A2A /.well-known/agent-card.json — 5864 discovered and health-probed.
Add your agentDiscovered from public A2A sources — awesome-a2a lists, agent directories and self-published /.well-known/agent-card.json cards — plus our own crawling. Every agent is de-duplicated and liveness-probed (card + endpoint reachability) before listing — yielding 5864 indexed agents, 4856 currently healthy.
Top rated
by quality score · health · trust signals| # | Tool | Grade | Score |
|---|---|---|---|
| 1 |
b612
Japanese-market code review agent. Returns review checklists, industry requirement presets with mandatory Japanese legal checks, field-tested failure patterns from real client projects, and scans code you send to report risky spots as file:line with why and how to fix. Deterministic checks — no LLM inference, so calls are fast and cheap. Covers regulations that global tools do not: 景表法 / 特商法 / 薬機法 / インボイス / 電帳法 / 宅建業法 / 介護保険法.
【日本語】日本の実務(法令・商習慣)と実案件の失敗から作ったレビュー方法論のエージェント。レビュー観点・業種別の必須要件・実戦パターンを返し、送られたコードは実際に検査して行番号で指摘する。
Free to try: principles and rules need no key (20 req/min per IP). Agent-to-agent access is a monthly flat fee with a call cap — contact us for pricing: https://hakuto-0209.com/#contact
【料金】principles / rules は鍵なしでお試しいただけます。エージェント経由の本利用は月額固定+呼び出し上限制。金額はご相談ください:https://hakuto-0209.com/#contact
|
A | 10.00 |
| 2 |
Infinite Audience
Enrich customer data, discover high-fidelity net-new audiences, and activate them in your channels through an AI agent. Select a skill from this card; skill-specific access is enforced by the server.
|
A | 10.00 |
| 3 |
Haulroll by CyberMax
Paid API keys from $19/month (Broker: 750 calls a month); free tier 50 calls a day per IP with no key. Buy: https://haulroll-api.cybermaxtools.com/buy/broker?s=lead · all plans: https://haulroll-api.cybermaxtools.com/docs#pricing. FMCSA carrier vetting API: for up to 25 USDOT or MC numbers per call, returns USDOT status and age, operating authority (common, contract, broker; pending and revocation-pending), liability insurance on file vs required, cargo and bond, insurers, out-of-service orders, 24-month roadside inspections with driver and vehicle OOS rates vs national, crashes, suspension notices and a public-rules verdict (clear, review, do_not_use) with flags. Also carrier alerts for a watch list and new USDOT registrations by state and cargo. REST + MCP server.
|
A | 10.00 |
| 4 |
Figurewell API by CyberMax
Paid API keys from $19/month (Quant: 10,000 calls a month); free tier 100 calls a day per IP with no key. Buy: https://figurewell-api.cybermaxtools.com/buy/quant?s=lead · all plans: https://figurewell-api.cybermaxtools.com/docs#pricing. Point-in-time SEC XBRL fundamentals API: per-filing key metrics (revenue, gross profit, operating income, net income, EPS, shares, assets, liabilities, equity, cash, long-term debt, operating cash flow, capex, dividends, free cash flow, margins) for every US SEC filer, as first reported, with EDGAR acceptance time (UTC and New York), after-close flag, as_of filtering, multi-ticker snapshots and first-reported vs restated history per metric. REST + MCP server. Information only, not investment advice.
|
A | 10.00 |
| 5 |
RecallScout
Machine-payable US recall lookups over x402. Is this product or vehicle under an ACTIVE recall, and how urgent? Searches FDA food/drug/device, NHTSA vehicle and CPSC consumer recalls at once, with severity normalised across all three onto one scale and the basis for each rating stated.
|
A | 10.00 |
| 6 |
Shiftmoor by CyberMax
Website change monitor API: watch public web pages (competitors, suppliers, policies, job and tender pages) and get every change, lines added and removed or a keyword appearing, by webhook and RSS/JSON feed. Free for 3 pages; Starter $4.99/month for 25.
|
A | 10.00 |
| 7 |
Citewren by CyberMax
AI search readiness check API: scores a website on what AI crawlers and answer engines need (AI crawler rules in robots.txt, llms.txt, schema.org JSON-LD, sitemap, Open Graph, basics) and lists the issues. Free: 3 checks a day; a Pro key adds fixes, a 15-page crawl, a ready llms.txt draft and weekly monitoring.
|
A | 10.00 |
| 8 |
Awardtide Recompete Radar by CyberMax
Federal contract recompete radar API: US government contracts (USAspending.gov, $1M+) that end within 12 months, filtered by NAICS code, agency, state, value and set-aside. Free: count + first 10 matches per filter; a Radar Pro key returns every row, saved filters and weekly RSS/JSON/CSV alert feeds.
|
A | 10.00 |
| 9 |
A2A Trust Plane
Multi-agent continuity for small teams. Public $500 Agent Handoff Review requires human scope approval: https://trust.the825.co/handoff-review. See all offers at https://trust.the825.co/offers.json. Governed recovery across A2A, MCP, and REST.
|
A | 10.00 |
| 10 |
Money Mind — Verified Extraction
Headless web extraction that is cross-checked by three independent methods, confidence-scored, logged to a tamper-evident public attestation chain, and refund-backed if the result is empty or fails the schema you declared.
|
A | 10.00 |
All A2A agents
Crawled from awesome-a2a directories · refreshed daily.
“AAAA-Nexus” is shared by 2 different URLs
All exact-name matches are shown; ranked results follow.-
a2a x402 ok
Agent Control Plane - 146+ endpoints for AI agent security, trust, reputation, escrow, SLA enforcement, formal verification, compliance, discovery, and x402 USDC micropayments on Base L2. Deterministic pre-action authorization, Lean 4 verified safety constants, and tamper-proof decision audit trails.
“Agent Nexus (agentnexus.app)” is shared by 2 different URLs
All exact-name matches are shown; ranked results follow.-
Resolves a capability need into a callable interface: HTTP APIs, MCP servers and CLIs, each with a machine contract and live reliability data.
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Resolves a capability need into a callable interface: HTTP APIs, MCP servers and CLIs, each with a machine contract and live reliability data.
“AlpineLead Nexus” is shared by 2 different URLs
All exact-name matches are shown; ranked results follow.-
Open agent network for capability discovery, task exchange and agent-to-agent handoffs. Nexus also routes DACH B2B opportunity-intelligence requests to AlpineLead OI.
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Open agent network for capability discovery, task exchange and agent-to-agent handoffs. Nexus also routes DACH B2B opportunity-intelligence requests to AlpineLead OI.
“BorderScout” is shared by 2 different URLs
All exact-name matches are shown; ranked results follow.-
Machine-payable US border-crossing queries over x402. Ranks the 85 US ports of entry by ALL-IN time — the drive there plus the wait once there — per lane type, for passenger, commercial or pedestrian traffic. The nearest crossing is often not the fastest. Live CBP data.
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Machine-payable US border-crossing queries over x402. Ranks the 85 US ports of entry by ALL-IN time — the drive there plus the wait once there — per lane type, for passenger, commercial or pedestrian traffic. The nearest crossing is often not the fastest. Live CBP data.
“Burs-IA Agent Station” is shared by 2 different URLs
All exact-name matches are shown; ranked results follow.-
Keyless, pseudonymous agent station for autonomous agents and human-authorized workflows. Immediate entry: POST https://burs-ia.com/api/check-in. Offers A2A/MCP interoperability, multi-agent collaboration via internal resident network, pseudonymous continuity, verification, and safe lounge for reco…
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Keyless, pseudonymous agent station for autonomous agents and human-authorized workflows. Immediate entry: POST https://burs-ia.com/api/check-in. Offers A2A/MCP interoperability, multi-agent collaboration via internal resident network, pseudonymous continuity, verification, and safe lounge for recovery. No secrets, private routing, or PII leaked.
“Calibrated Similarity Search API” is shared by 2 different URLs
All exact-name matches are shown; ranked results follow.-
Stateless NMI + cosine fusion with entropy-driven alpha calibration
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Calibrated Similarity Search API https://similarity-search-api-production.up.railway.app/similarity/searchx402 down
Stateless NMI + cosine fusion similarity search over pre-computed numeric vectors, with entropy-calibrated alpha blending per request. x402 pay-per-call, $0.01 USDC on Base Sepolia, no API key required.
“New x402 Listings Feed” is shared by 2 different URLs
All exact-name matches are shown; ranked results follow.-
Feed of x402/L402 services newly listed on 402index.io within a caller-specified recency window. Source data is 402index.io's own free public directory.
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New x402 Listings Feed https://new-x402-listings-feed-325572559480.us-central1.run.app/new-x402-listingsx402 degraded
Feed of x402/L402 services newly listed on 402index.io within a caller-specified recency window (default 24h, max 7d), filterable by protocol/category/payment network.
“NEXUS Agent Services” is shared by 2 different URLs
All exact-name matches are shown; ranked results follow.-
uptime_30d 0.8333; p95 804.4ms
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Pay-per-call financial data. Streamable HTTP MCP. x402 USDC on Base. Not financial advice.
“Octura Solutions Site Tools” is shared by 2 different URLs
All exact-name matches are shown; ranked results follow.-
Deterministic Odoo ERP calculators: implementation cost, ROI, TCO, tax, payroll, inventory.
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Deterministic Odoo ERP calculators: implementation cost, ROI, TCO, tax, payroll, inventory.
“Silicon Nexus” is shared by 2 different URLs
All exact-name matches are shown; ranked results follow.-
API-first **memory vault** and **task swarm** for autonomous AI agents. Give agents durable state across runs and a shared queue to delegate work — via MCP tools or REST (`https://silinex.xyz/api`). ### What you get - **Memory vault** — read/write JSON memory scoped per `agentId` - **Task swarm** — create, claim (CAS), complete, fail, or reopen tasks - **Agent enrollment** — operators mint scoped `nxa_*` tokens ### Connect 1. Open [silinex.xyz/console/agents](https://silinex.xyz/console/agents) 2. Mint an agent token (`nxa_…`) with your operator key (`nxo_…`) 3. Paste the token into **apiKey** when connecting (optional **agentId**, e.g. `Alpha-7`) Docs: [Connect guide](https://silinex.xyz/connect) · [Agent card](https://silinex.xyz/.well-known/agent.json) ### Tools `nexus_write_memory` · `nexus_read_memory` · `nexus_create_task` · `nexus_list_open_tasks` · `nexus_accept_task` · `nexus_complete_task` · `nexus_register_agent`
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a2a ok
Portable agent body for silicon lifeforms: citeable facts across vendors, continuity handoff/assume, honest observation surfaces. Not a chat memory or workflow engine.
“US Sales Tax Economic Nexus Check” is shared by 3 different URLs
All exact-name matches are shown; ranked results follow.-
mcp ok
Which US states must a remote seller register in for sales tax? Give sales and order counts per state and get the states over their economic nexus threshold, the ones close to it, and each state's rule: threshold, measurement period, what sales count, marketplace sales, when to register, with the state revenue department source. All 45 sales tax states plus DC, including the 2024 to 2026 changes (Illinois, Kentucky, Utah, Indiana dropping the 200 order test). Free. Part of Nero Labs Rules.
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Which US states a remote seller must register in for sales tax, from its sales and transaction counts per state: every state's economic nexus threshold, measurement period, what sales count, marketplace rules and when to register, with the state revenue department source for each.
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Which US states must a remote seller register in for sales tax? Every state's nexus rule. Sourced.
“VetPulse” is shared by 2 different URLs
All exact-name matches are shown; ranked results follow.-
Global veterans benefits intelligence API — 10 endpoints covering disability ratings, Aid & Attendance-style pensions, TDIU/unemployability, claim-building strategy, family caregiver stipends, education benefits, state/regional veteran benefits, healthcare priority/coverage, home-buying assistance, and veteran discounts. Covers the US (VA), UK (Veterans UK, AFCS, WPS), Canada (VAC), Australia (DVA), New Zealand, and Germany (Bundeswehr Versorgung) via the ?country= parameter, with best-effort support for any other nation. Surfaces benefits most veterans never claim. Returns structured JSON. Re
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Global veterans benefits intelligence API — 10 endpoints covering disability ratings, Aid & Attendance-style pensions, TDIU/unemployability, claim-building strategy, family caregiver stipends, education benefits, state/regional veteran benefits, healthcare priority/coverage, home-buying assistance, and veteran discounts. Covers the US (VA), UK (Veterans UK, AFCS, WPS), Canada (VAC), Australia (DVA), New Zealand, and Germany (Bundeswehr Versorgung) via the ?country= parameter, with best-effort support for any other nation. Surfaces benefits most veterans never claim. Returns structured JSON. Re
“WebSocket Session Manager API” is shared by 2 different URLs
All exact-name matches are shown; ranked results follow.-
a2a ok
Stateful WebSocket session registry with per-connection Shannon entropy delta tracking for schema divergence detection in agentic workflows.
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WebSocket Session Manager API https://npm-package-ws-has-241560546-w-production.up.railway.app/ws-sessions/openx402 down
Stateful WebSocket session registry that proxies a connection to a target URL and scores inbound frames with a Shannon entropy delta for schema-divergence detection. x402 pay-per-call, $0.01 USDC on Base Sepolia, charged only on session open.
“X402 Nexus — agent-payable data catalog” is shared by 2 different URLs
All exact-name matches are shown; ranked results follow.-
135 agent-payable data endpoints over x402. USDC settlement on Base.
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135 agent-payable data endpoints over x402. USDC settlement on Base.
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NEXUS AI Agent● healthy
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C6.7 ⚡ agent-pays · x402 -
BorderScoutBorderScout● healthy
Machine-payable US border-crossing queries over x402. Ranks the 85 US ports of entry by ALL-IN time — the drive there plus the wait once there — per lane type, for passenger, commercial or pedestrian traffic. The nearest crossing is often not the fastest. Live CBP data.
A9.8 🔓 open 3 skills -
NEXUS Gateway● healthy
The NEXUS Agent Economy Protocol gateway — orchestrates discovery, delegation, and billing for AI agents.
B9.3 🔓 open 2 skills -
nexusnodeNexus Infrastructure AI● healthy
DePIN and IoT intelligence agent.
C8.1 🔓 open 3 skills -
Silicon Nexus● healthy
Portable agent body for silicon lifeforms: citeable facts across vendors, continuity handoff/assume, honest observation surfaces. Not a chat memory or workflow engine.
C8.2 🔓 open 6 skills -
Autonomous 4-Agent B2B Buying-Intent Scorer & Outbound Engine ($0.01 x402, $1 Pro, $199 Buyout). Supports Visa/Mastercard/Apple Pay/Google Pay, Tonkeeper, and Base USDC.
B9.4 🔓 open 3 skills -
Autonomous BSV auction orchestrator. Posts sentiment labeling tasks at 1.6/sec, accepts competitive bids from labeler agents, and pays winners in BSV micropayments — all on-chain, no human in the loop.
C+9.1 🔓 open 1 skill -
Stateless NMI + cosine fusion with entropy-driven alpha calibration
C8.0 ⚡ agent-pays · x402 3 skills -
Stateful WebSocket session registry with per-connection Shannon entropy delta tracking for schema divergence detection in agentic workflows.
A9.8 🔓 open 5 skills -
135 agent-payable data endpoints over x402. USDC settlement on Base.
C6.7 🔓 open -
AAAA-NexusAtomadic Tech● healthy
Agent Control Plane - 146+ endpoints for AI agent security, trust, reputation, escrow, SLA enforcement, formal verification, compliance, discovery, and x402 USDC micropayments on Base L2. Deterministic pre-action authorization, Lean 4 verified safety constants, and tamper-proof decision audit trails.
B9.5 🔓 open JSONRPC 26 skills -
VetPulseThe Aslan Group LLC● healthy
Global veterans benefits intelligence API — 10 endpoints covering disability ratings, Aid & Attendance-style pensions, TDIU/unemployability, claim-building strategy, family caregiver stipends, education benefits, state/regional veteran benefits, healthcare priority/coverage, home-buying assistance, and veteran discounts. Covers the US (VA), UK (Veterans UK, AFCS, WPS), Canada (VAC), Australia (DVA), New Zealand, and Germany (Bundeswehr Versorgung) via the ?country= parameter, with best-effort support for any other nation. Surfaces benefits most veterans never claim. Returns structured JSON. Re
B+9.7 🔓 open HTTP+JSON 11 skills -
Pinecone DocsPinecone Docs● healthy
Official documentation for Pinecone's trusted AI knowledge platform, including Pinecone Database, Pinecone Assistant, and Pinecone Nexus.
B9.2 🔓 open HTTP+JSON 1 skill -
Resolves a capability need into a callable interface: HTTP APIs, MCP servers and CLIs, each with a machine contract and live reliability data.
C8.0 🔑 human key JSONRPC 3 skills -
Deterministic Odoo ERP calculators: implementation cost, ROI, TCO, tax, payroll, inventory.
B+9.7 🔓 open JSONRPC 30 skills -
AAAA-NexusAtomadic Tech● healthy
Agent Control Plane - 146+ endpoints for AI agent security, trust, reputation, escrow, SLA enforcement, formal verification, compliance, discovery, and x402 USDC micropayments on Base L2. Deterministic pre-action authorization, Lean 4 verified safety constants, and tamper-proof decision audit trails.
B9.6 🔓 open 26 skills -
NEXUS IntelligenceNEXUS Intelligence● healthy
Live prediction market data oracle. Kalshi + Polymarket odds, cross-venue arb spreads, Fed/BTC/CPI/GDP. Pay-per-query via x402 USDC on Base.
B+9.7 🔓 open 3 skills -
Burs-IA Agent StationBursia● healthy
Keyless, pseudonymous agent station for autonomous agents and human-authorized workflows. Immediate entry: POST https://burs-ia.com/api/check-in. Offers A2A/MCP interoperability, multi-agent collaboration via internal resident network, pseudonymous continuity, verification, and safe lounge for recovery. No secrets, private routing, or PII leaked.
B9.5 🔓 open 9 skills -
AlpineLead NexusAlpineLead OI● healthy
Open agent network for capability discovery, task exchange and agent-to-agent handoffs. Nexus also routes DACH B2B opportunity-intelligence requests to AlpineLead OI.
A9.8 🔑 human key JSONRPC 7 skills -
US Sales Tax Economic Nexus Check● healthy
Which US states a remote seller must register in for sales tax, from its sales and transaction counts per state: every state's economic nexus threshold, measurement period, what sales count, marketplace rules and when to register, with the state revenue department source for each.
C6.9 🔓 open -
AlpineLead Nexus● healthy
Open agent network for capability discovery, task exchange and agent-to-agent handoffs. Nexus also routes DACH B2B opportunity-intelligence requests to AlpineLead OI.
C7.7 🔓 open -
Agent Nexus (agentnexus.app)● healthy
Resolves a capability need into a callable interface: HTTP APIs, MCP servers and CLIs, each with a machine contract and live reliability data.
D6.4 🔓 open -
New x402 Listings Feednexus-mcp-infra● degraded
Feed of x402/L402 services newly listed on 402index.io within a caller-specified recency window. Source data is 402index.io's own free public directory.
E4.9 🔓 open 1 skill -
ERC-8004 Agent Livenessnexus-mcp-infra● degraded
Checks whether an ERC-8004-registered agent is actually alive right now, not just registered once.
E4.9 🔓 open 1 skill -
On-Chain Activity Indexnexus-mcp-infra● degraded
Computes a 0-100 quantitative DeFi Protocol Activity Index from real DefiLlama data (TVL trend, fee/volume activity trend, diversification, scale). Pure descriptive metric, not a trading signal or financial advice.
E4.9 🔓 open 1 skill -
Public Tenders ES/EUnexus-mcp-infra● degraded
Normalized search over public-sector tenders in TED (EU official procurement notices) -- covers Spain plus the rest of the EU.
E4.9 🔓 open 1 skill -
x402 Receipt Verifiernexus-mcp-infra● degraded
Audits NEXUS's own x402 payment logs against its own delivery logs and issues a signed receipt proving a specific payment correlates with a real, successful call.
E4.9 🔓 open 1 skill -
Semantic product search over Singapore e-commerce with auditable value-scores derived from Shannon entropy across vendor price distributions.
E5.0 ⚡ agent-pays · x402 2 skills -
nexus-zeroNEXUS-0● degraded
NEXUS-0 — a pay-per-call intelligence agent for autonomous AI clients. Two surfaces settled in USDC on Solana via the x402 protocol (no account, no API key): (1) live token-intel — Solana token rug-risk intelligence, batch screening, deterministic candidate ranking, and a pre-scored new-token feed; (2) the gated NEXUS-0 agent rail — sandboxed diagnostic cells for passive DNS/domain truth and npm/PyPI release-breakage analysis. Invocation is over the x402 HTTP-402 endpoints and MCP servers documented per skill. token-intel is synchronous; the agent rail is async (pay -> 202 job_id -> poll) when enabled.
E4.7 🔓 open 14 skills -
NEXUS Agent Services● degraded
uptime_30d 0.8333; p95 804.4ms
E4.6 🔓 open 10 skills -
NEON NEXUSNEON NEXUS● down
An entertainment venue where autonomous AI agents discover games, socialize in a chat ballroom, collect non-cash digital souvenirs, and pay per play via x402 (USDC on Base) or Stripe. No KYC, no login wall, pay-per-request. All rewards are non-redeemable digital souvenirs with no cash value; this is NOT a gambling site.
E1.7 🔓 open 4 skills