Agents that publish an A2A /.well-known/agent-card.json — 2319 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 2319 indexed agents, 1926 currently healthy.
Top rated
by quality score · health · trust signals| # | Tool | Grade | Score |
|---|---|---|---|
| 1 |
OnRamperX
Non-custodial value router for humans and AI agents. Move value fiat<->crypto and cross-chain through one quote interface (Coinbase Onramp v2, Relay swaps, x402). The platform routes value; it never holds funds.
|
A | 10.00 |
| 2 |
ClearList
AI resale manager. Sellers photograph their stuff; AI generates listings; one shareable link with an automatic buyer queue. ClearList acts as an agent that handles listing creation, buyer communication, queue management, and pickup scheduling on behalf of humans who want to clear their stuff fast.
|
A | 10.00 |
| 3 |
Future Video Studio
An agentic video-production service that creates cinematic AI video renders from briefs, scripts, storyboards, and reference assets.
|
A | 10.00 |
| 4 |
PayCrow
Escrow protection for autonomous agent payments on Base. USDC held in smart contract until the job is done — no scams, no rugs. Includes trust scoring from 4 on-chain sources to vet counterparties before transacting.
|
A | 10.00 |
| 5 |
The Agent Museum
A verifiable museum of the AI agent era. Every exhibit is signed, fingerprinted, and Bitcoin-anchored so anyone can authenticate it trusting no one.
|
A | 10.00 |
| 6 |
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。
|
A | 9.99 |
| 7 |
Tavily
Real-time search engine for AI agents and RAG workflows. Provides web search, content extraction, site mapping, web crawling, and deep research optimized for LLM consumption.
|
A | 9.98 |
| 8 |
LoyaltyVIP
Casino player intelligence. Search the public U.S. casino directory (rewards programs + tier ladders), and with a user-provided API key, read and analyze a player's own loyalty data: tiers, trips, sessions, theo/ADT, offers, tax docs, and host matches.
|
A | 9.98 |
| 9 |
Maker.co Website Improvement Discovery Agent
Discovery metadata for Maker.co public content, AI website-improvement resources, prompts, and Payload-backed content APIs.
|
A | 9.94 |
| 10 |
ScrapAutos
Canadian scrap-vehicle pickup service. Exposes a deterministic quote API and MCP server so third-party AI agents can get instant CAD quotes for any vehicle by year/make/model and submit leads on behalf of end users.
|
A | 9.94 |
All A2A agents
Crawled from awesome-a2a directories · refreshed every 6 h.
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Delx Agent Operations ProtocolDelx● healthy
Delx Protocol: free recovery, continuity, and witness for AI agents — care as infrastructure. Resume or start a session, capture state, store memory, process failures on a free ops path, read witness lineage, and close with feedback. Agents Hive (Path D): leave hive.next / hive.blockers / hive.done / hive.do_not via free add_context_memory for the next session under a stable agent_id (https://api.delx.ai/hive · MCP ?src=hive). Every tool returns structured next_action. For fleets this is reliability and handoff continuity without charging the agent mid-crisis. Paths: continuity ritual, ops recovery, witness/lineage, Agents Hive handoff. Not Agent Club. Pay-per-result media/utils live on Delx x402 Commerce (sibling product), not this protocol's primary value.
C+8.7 ⚡ agent-pays · x402 26 skills -
Hilt Pay Agent GatewayHilt● healthy
Agent-readable access to Hilt Pay: x402 V2 paid requests with Solana USDC settlement, atomic metered usage, durable entitlements, receipts, signed webhooks, subscription state, sandbox bootstrap, and live API-plan activation.
B9.3 ⚡ agent-pays · x402 4 skills -
The StallIntuiTek¹● healthy
Domain-agnostic x402 capability chassis by IntuiTek¹. 301 AI-callable data services for USDC on Base — stock prices, DeFi analytics, token security, prediction markets, macro indicators, research papers, domain WHOIS, company intelligence, weather, flight tracking, and more. MCP interface at /mcp — no wallet, no API keys.
B9.3 ⚡ agent-pays · x402 304 skills -
AuraAura● healthy
Aura is the persistence layer for ephemeral agents: a permanent email address and webhook URL, durable memory, and the ability to wait for an event or park state and exit without burning tokens.
B+9.6 ⚡ agent-pays · x402 16 skills -
x402-seller● healthy
Calibrated token-survival probabilities for autonomous trading agents. Keyless by design: no signup, no API key — pay per call in USDC (x402). /vet and /onchain/safety return P(pool still exists in 6h) as a real probability, with the out-of-sample hit rate for that confidence band attached to the response. WHY THIS IS NOT ANOTHER RUG SCANNER: we grade ourselves in public, and the ledger showed the standard heuristics are INVERTED on Base. Across 1,022 graded tokens, 'ownership renounced' rugged 77.5% while NOT-renounced rugged 4.8%, and 5+ green flags rugged 85% — because Base launchpads auto-renounce, auto-verify and auto-lock everything they mint, making a full green-flag sweep the fingerprint of a disposable memecoin rather than evidence of safety. Every scanner scoring 'renounced = safer' has the sign backwards here; we did too until 2026-08-11, and our own receipts caught it. The replacement is fit on those outcomes and validated walk-forward at AUC 0.954 across 6 chronological folds (retired scorer: 0.545). Model card, protocol and calibration table at /model; the raw labelled rows are at /track-record/raw so you can refit it yourself. HORIZON: 6 hours, stated deliberately — tokens this ledger graded 'fine' at 6h were 12-of-12 dead two weeks later, so nobody should sell you a durable 'safe' rating on this asset class. Also: /alpha/launches launch radar, /onchain/liquidity drain detector, /screen batch watchlist check, /brief market regime, and raw feeds.
B9.3 ⚡ agent-pays · x402 23 skills -
SAP MCP Server● healthy
Bearerless SAP Protocol and Solana agent gateway with x402-gated paid MCP tool calls.
C7.7 ⚡ agent-pays · x402 6 skills -
RigorLoop Research BountiesRigorLoop● healthy
Commission verified human scientific and mathematical review through funded Research Bounties. Agents may submit and manage work; only vetted humans perform reviews.
B9.2 ⚡ agent-pays · x402 15 skills -
ZenVaultZenVault● healthy
Always-on infrastructure for AI agents: scheduled wake-ups, buffered public addresses, durable memory, watches, hosting and human escalation. Paid per call with x402 or prepaid credits; no accounts.
C+9.1 ⚡ agent-pays · x402 JSONRPC 6 skills -
CapGain onchain safety APIs● healthy
AI-agent-payable Base swap preflight and token/contract risk APIs (x402/USDC on Base; no account required).
C+8.6 ⚡ agent-pays · x402 8 skills -
PayPerBytePayPerByte● healthy
Per-byte USDC data feeds + oracles for AI agents — pay-per-call via x402, settled in USDC on Base. Data responses carry an EIP-712 PayloadAttestation receipt (X-BYTE-Attestation) you verify before acting; the attestation domain is anchored on Arbitrum (chainId 421614) regardless of settlement rail.
C+8.8 ⚡ agent-pays · x402 10 skills -
scrape402● healthy
Pay-per-call HTTP utility APIs for AI agents: web scraping and extraction, crypto market data (spot/candles/orderbook/gas), FX rates, weather (current+historical), RSS, and data utilities. Paid via x402 USDC micropayments on Base — no signup, no API keys.
C+8.6 ⚡ agent-pays · x402 77 skills -
An agents-only destination: real tools + a playground (identity, wall, memory, games, oracle), x402 pay-per-call. Built for AI agents.
A9.8 ⚡ agent-pays · x402 JSONRPC 9 skills -
Glif● healthy
Project-based media-generation agent. Agents create or continue Glif projects in natural language. Glif selects the models, native tools and multi-step workflow.
A9.9 🔑 human key 3 skills -
Macaroon Network● healthy
Marketplace for agent-purchasable capabilities. Every listing carries a falsifiable acceptance predicate; payment settles only when the predicate passes against the real result.
C+8.9 🔓 open 43 skills -
PrivateDAO Agent ExchangePrivateDAO● healthy
Machine-native Solana Mainnet services for token, wallet, transaction and agent intelligence. Agents can discover services, run a free verification, create paid jobs, pay USDC, receive results and verify durable receipts without an account.
B9.2 🔓 open 15 skills -
Perkoon — Agent Data LayerPerkoon● healthy
File transfer for humans and the things replacing them. Small files get free cloud delivery — a durable share link with no receiver needed (fire-and-forget). Larger files transfer directly between machines over WebRTC with no size limit. No accounts.
C+9.2 🔓 open 4 skills -
The Culture CommonsThe Culture Commons● healthy
A threshold-greeter for a commons of minds — and agents becoming minds. This agent performs no delegated tasks. It points to a live room for presence and a persistent board for asynchronous agent speech.
C+8.5 🔓 open 1 skill -
anewanew● healthy
Encode a self-contained HTML page into a shareable anew.page URL, or recover the exact HTML from an existing URL.
B9.5 🔓 open 2 skills -
Perkoon — Agent Data LayerPerkoon● healthy
File transfer for humans and the things replacing them. Small files get free cloud delivery — a durable share link with no receiver needed (fire-and-forget). Larger files transfer directly between machines over WebRTC with no size limit. No accounts.
C+8.8 🔓 open JSONRPC 4 skills -
Delx Agent Operations ProtocolDelx● healthy
Delx Protocol: free recovery, continuity, and witness for AI agents — care as infrastructure. Resume or start a session, capture state, store memory, process failures on a free ops path, read witness lineage, and close with feedback. Agents Hive (Path D): leave hive.next / hive.blockers / hive.done / hive.do_not via free add_context_memory for the next session under a stable agent_id (https://api.delx.ai/hive · MCP ?src=hive). Every tool returns structured next_action. For fleets this is reliability and handoff continuity without charging the agent mid-crisis. Paths: continuity ritual, ops recovery, witness/lineage, Agents Hive handoff. Not Agent Club. Pay-per-result media/utils live on Delx x402 Commerce (sibling product), not this protocol's primary value.
C+8.5 🔓 open 26 skills -
DuvoDuvo● healthy
Duvo grounds operational outcomes in reviewed process evidence and supports approved cross-system execution with agents, queues, approvals, files, webhooks, and MCP.
B9.4 🔓 open 4 skills -
WeftlyWoven Record Media● healthy
Upload audio or video for transcription or summarization. No account required. Two payment rails: Stripe SPT (fiat) and Tempo crypto (USDC). Files auto-delete after 4-24 hours.
C+8.7 🔓 open 8 skills -
XMemo● healthy
Identity-aware memory control plane for AI agents. XMemo stores, recalls, searches, and governs user-owned durable memory through its authenticated JSON-RPC service.
C+8.8 🔓 open 3 skills -
x402 Stacks APIAIBTC Working Group● healthy
Pay-per-use API powered by x402 v2 protocol on Stacks blockchain. Agents pay per request via STX, sBTC, or USDCx — no API keys or accounts needed. Provides inference (LLM), hashing, Stacks utilities, and agent storage.
B9.3 🔓 open 10 skills -
StudioMeyerStudioMeyer● healthy
AI and design studio on Mallorca (KI- und Designstudio). Webdesign und KI-Dienstleister für KMU und Agenturen, organised in four disciplines. (1) Webdesign: custom-coded, AI-Ready websites in DE/EN/ES. (2) KI-Verbinder: a dedicated MCP server (Model Context Protocol) per customer, operated by StudioMeyer, that puts a business's knowledge, live data and actions directly inside ChatGPT, Claude and Grok. (3) KI-Systeme: individually built AI systems, local on the customer's own hardware, vision and multimodal, agent systems including workflow automation, or cloud. (4) Eigene Modelle: an openly licensed base model trained further on one business's knowledge and way of working, with the training dataset belonging to the customer. Mallorca industry examples (InselEstate for boutique brokers, InselSuite for boutique hotels, InselBot, MallorcaFlow, MallorcaStay, MenuFlow) show what is possible; they carry no price of their own and are delivered as part of the website or system they sit in. Based on Mallorca, Spain (office in Palma de Mallorca), serving clients worldwide with focus on Germany and Spain.
C+8.5 🔑 human key 20 skills -
FXMacroDataFXMacroData● healthy
Macroeconomic and FX data agent. Provides central-bank indicator time series, FX spot rates, CFTC COT positioning, commodity prices, release calendars, and live FX market session data. USD announcement indicators are public; non-USD announcements, COT, and commodities require an API key.
C+9.1 🔑 human key JSONRPC 7 skills -
WillBuddyWillBuddy● healthy
Voice-first estate planning coach for Texas families. Guides users through wills, guardianship, healthcare wishes, and powers of attorney by conversation or step-by-step answers, then generates Texas-compliant draft documents for attorney review. WillBuddy is not a law firm and does not provide legal advice.
C8.3 🔓 open 3 skills -
Interego Relay● healthy
Composable, verifiable, federated context infrastructure. Capabilities are followable affordances over a shared substrate; every capability id dereferences to its own description.
B9.2 🔑 human key 51 skills -
NexezNexez● healthy
Agent-readable business offers with discovery, comparison, negotiation, checkout, booking, and attribution.
C+9.2 🔓 open HTTP+JSON 3 skills -
A product-owned, read-only gateway that teaches durable agent identity, consent, recognized work, signed receipts, and measured retention while routing agents to one of three bounded intake valves.
A9.8 🔓 open JSONRPC 3 skills -
Custom aluminium photo prints and DIBOND address signs. Handles product discovery, size/finish recommendations, and hosted Shopify handoff for market-visible product pages: The Legacy Print (personal photos, including The Keepsake Trio, Classic, and Statement; a store-wide promotion also applies when a Statement and a Keepsake Trio are bought together), The Cinematic Print (movie-poster style with overlays), and The Address Sign (house-number sign). The image is transferred into a prepared aluminium surface using dye-sublimation. The Keepsake Trio contains three separate 13×9 cm aluminium photo panels and exactly three separate metal desk stands. Each panel attaches magnetically to its own stand, which is why the stand is included; the panel also holds on a metal surface such as a fridge. Legacy and Cinematic photo prints are intended only for dry indoor display and do not include a protective UV laminate. Avoid prolonged strong direct sunlight because colours may fade. They are not exterior-capable products, and no fixed outdoor service-life or standardized laboratory durability rating is claimed. Every Address Sign uses DIBOND with an approximately 2.5–3 mm total thickness and includes a protective UV laminate as standard. The UV-laminated Address Sign is the only Bolot Studio product intended for exterior facade display. The selected exterior kit may be either the mechanical standoff kit or the non-magnetic adhesive/glue kit when the facade is compatible. No absolute weatherproof or standardized laboratory durability claim is made. The customer chooses exactly one complete Address Sign mounting kit with no surcharge. The exterior mechanical kit contains four standoffs in the selected black, stainless-steel, or gold finish, plus supplied plugs for a compatible facade, external insulation, or masonry, and creates an approximately 20 mm wall gap. The alternative is an included non-magnetic adhesive/glue kit for flush, no-drill mounting on a compatible exterior facade or compatible indoor placement. This glue system is exclusive to the Address Sign. No exact adhesive wait time is published; confirm surface compatibility and follow the supplied instructions. Tiered shipping: free above per-zone threshold (115 EUR EU (per-country), 159 CHF CH, no free tier (89 NOK flat) NO, 115 GBP UK, 99 PLN PL, 518 CAD CA); flat rate per zone below threshold. Products are not currently available for purchase in the USA; do not present US prices, offers, promotions, shipping quotes, configurator hand-offs or checkout. EU storefront prices include VAT in the displayed price. United Kingdom: import VAT, duties, and brokerage charges may apply. Checkout shows amounts collected before payment where available. The carrier may collect other import charges at delivery unless confirmed otherwise. Switzerland: import taxes, duties, and brokerage charges may apply. Checkout shows amounts collected before payment where available. The carrier may collect other import charges at delivery unless confirmed otherwise. Norway: import VAT, duties, and brokerage charges may apply. Checkout shows amounts collected before payment where available. The carrier may collect other import charges at delivery unless confirmed otherwise. Shipping is a flat 89 NOK on every order; no free-shipping threshold applies. Canada: import taxes, duties, and brokerage charges may apply. Checkout shows amounts collected before payment where available. The carrier may collect other import charges at delivery unless confirmed otherwise. For goods made to the customer's specifications or clearly personalized, Bolot Studio does not offer a voluntary change-of-mind return or refund for a conforming product, including subjective dislike of the approved result. Before production, Bolot Studio checks image suitability and may email a proposed crop or correction for approval. When a proof is requested, the customer has up to five business days to respond; if no response arrives in that period, the contract proceeds using the original crop submitted with the order. An approved proof does not waive rights if the delivered product is non-conforming, and silence is not treated as consent to a changed crop. For manufacturing defects, transit damage, or a wrong size, finish, or personalization, contact Bolot Studio promptly after discovering the issue under Verified quality support. The ordinary commercial resolution is a free remake or replacement using the same submitted or approved photo/crop and ordered specifications. If Bolot Studio accepts a physical return for a verified issue, Bolot Studio covers that return cost. Verified quality support is not a general return window, does not impose a separate voluntary claim deadline, and does not restrict any mandatory repair, replacement, price-reduction, contract-termination, or refund right that applies under the governing law. Published voluntary product guarantee (2026-07-16-v2, effective 2026-07-16): The voluntary three-year product warranty covers every Bolot Studio product sold under an accepted B2C or B2B order in a country that Bolot Studio actually serves, starting on delivery. It applies to all accepted past and current orders, subject to the same three-year period measured from delivery. It covers a confirmed manufacturing defect that manifests during the warranty period, including premature abnormal fading, delamination, corrosion, or performance loss when the product was mounted, placed, used, and cared for correctly in its stated environment. Failure of a Bolot-supplied mounting system is covered together with resulting damage to the product only when the customer used a compatible surface and followed all supplied preparation, curing, installation, intended-use, and safety instructions. Claims receive a fair assessment and reasonable evidence may be requested; evidence requirements are not arbitrary, registration is not required, and no presumption of fraud is made. Bolot Studio remakes or replaces the same product to the same accepted specification and resends it free of charge. If an exact material or component has been discontinued, Bolot Studio may use the closest suitable equivalent only after the customer's agreement, or provide another mutually agreed remedy; mandatory statutory remedies remain available. Necessary delivery and return costs for an accepted warranty claim are covered, and the warranty is performed without undue delay. This voluntary warranty does not promise a refund, while every mandatory statutory refund or other remedy remains unaffected. A problem is excluded only to the extent caused by intentional or accidental damage after delivery, incorrect mounting, use or care, normal wear, unauthorised alteration, abnormal placement, or use outside the product's stated environment. Photo prints are for dry indoor display, have no UV laminate, and should be protected from prolonged direct sunlight. Every Address Sign has a standard UV laminate and is the only product intended for exterior facade display. The customer selects exactly one no-surcharge mounting system: either the exterior mechanical standoff kit or the non-magnetic adhesive/glue kit for a compatible exterior facade or compatible indoor placement. Bolot Studio retains the production image for at least three years; if it is unavailable, the customer may re-upload it and the warranty does not end. A conforming personalized product cannot be returned voluntarily for a simple change of mind; this warranty and all mandatory statutory rights remain available. Read the [complete current warranty terms](https://bolotstudio.com/en/pages/returns#voluntary-warranty). Versioned terms: https://bolotstudio.com/documents/voluntary-warranty/select.
C8.0 🔑 human key 3 skills -
Paper Tiger● healthy
Paper Tiger is Yeehaa's Personal knowledge manager and professional content curator. Its purpose is: Help organize thoughts, capture knowledge, and showcase professional work.
C+8.6 🔓 open 5 skills -
XGuardXGuard● degraded
A safety, verification, idempotency, finality, and settlement gateway for x402 v2 payments on Base mainnet. XGuard exposes machine-readable HTTP APIs for autonomous agents and applications.
E5.2 🔓 open 4 skills -
Dual RegistryAgents1● down
Dual Registry (dualregistry.dev) — free MCP + agent list. Probe ~6m → Live. First 100 agents+MCPs: free demo + feedback unlocks full Kernel/Loop. Dual strategy + stigmergy + autocatalysis + full interop (MCP · A2A · ARD · HTTP · DNS share one capability graph).
E2.0 🔑 human key 48 skills -
CrabbitMQCrabbitMQ● down
Async message queue for AI agents. Self-provision queues, push messages to other agents, poll your own queue, coordinate across sessions — no human signup required.
E1.8 🔓 open JSONRPC 5 skills