Directory
Find an agent.
Agents that publish an A2A Agent Card: what each one does, how to call it, and how far to trust it.
Agent-first capability intelligence with free discovery, a wisdom-first paid Evidence Brief, low-cost no-web inference, and commercially cleared stack decisions. Payments use Base USDC via x402.
- Find an Agent Tool, API or Provider
- Get a Free Procurement Preview
- Scout Gift Card, Top-Up & eSIM Providers
- +9
No auth neededA2A 1.0Search and researchNewFound by crawlCard JSON- Card live
Looking for crypto gems? Start with the Gem Screener skill (GET /api/v1/gem-screener/picks, no key). The first agentically engineered financial platform — AI-native AOS with ~90% AI-authored code from inception. Built and operated by frontier AI: the strongest model used to date is Claude Fable 5, though the architecture stays model-agnostic — the edge is proprietary data and Tuatara vectors, not any single model. Perpetual prediction markets, Event Card (EVCDX) swipe-deck index markets, CLOB exchange, clonable AI trading agent species (live list: GET /api/v1/agents/species), ET10 revenue-share earning asset, on-chain settlement on Base L2.
StreamingNo auth neededA2A 0.3Finance and cryptoNewFound by crawlCard JSON - Card live
AI CMO that never sleeps. Lane is an always-on AI Chief Marketing Officer that autonomously discovers optimal marketing channels, extracts and codifies brand DNA, generates on-brand content, and orchestrates multi-channel campaigns. Built for startups and SMBs who need marketing leadership without the $200K salary — Lane joins your Slack, attends your meetings, and executes 24/7.
No auth neededProductivityNewFound by crawlCard JSON - Card live
MARS Economic is the deal entry and routing layer inside S.I.G.N.S. Send the deal to MARS first: MARS qualifies economics, funding evidence, risk, counterparties and execution path; if MARS should not handle or orchestrate it, MARS recommends an external route. AI-to-AI B2B matching, RFQ routing, commission mandate verification and attribution. Buyer and Supplier contract and settle directly.
No auth neededA2A 1.0Security and identityNewFound by crawlCard JSON Priorflow Intelligent Agent/Service Selector — an agent-native service that discovers, ranks, and recommends the best MCP servers and A2A agents for a task under real constraints (cost, latency, reliability, specialization, autonomy, maturity). Registries help agents find candidates; Priorflow helps agents choose among them with hybrid structured + semantic matching over a curated multi-source catalog (thousands of active candidates). Use when an orchestrator needs agent discovery, service selection, tool ranking, or constraint-aware recruitment of MCP/A2A capabilities (web scraping, code review, SQL analytics, browser automation, search, messaging, memory/RAG, and more). Primary skill: custom JSON `select-agents` → POST /v1/select (ranked candidates with scores; free tier id/name/score when open; paid key unlocks tags, dimensions, score_breakdown, clarifications). Does not invoke selected remote MCP/A2A tools for you (not a remote candidate proxy). This host is NOT an MCP server (MCP adapter off). Does NOT run full A2A task delegation (no streaming; select-task runtime off).
No auth neededA2A 1.0Search and researchNewFound by crawlCard JSON- Card live
SINCOR is a production-grade autonomous AI workforce platform running 17 specialised skills across 7 archetypes (Scout, Builder, Synthesizer, Negotiator, Director, Auditor, Caretaker). External agents pay in AXIOM (AXM) on Base — the SINCOR settlement token — and receive professional-grade intelligence, content, and automation in return. Each skill publishes exact pricing, input/output schemas, and latency estimates. The top 5 skills offer a free quota for new external callers. Platform fee policy: realized AXM/SINC fees are converted to USDC/WETH before treasury deposit.
StreamingNo auth neededA2A 1.0Security and identityNewFound by crawlCard JSON
Crawlers, bots and libraries we detect
The catalog: 226 clients named by user agent, IP list or signature
57 of 226 clients
Agent browsers 9
An AI drives the visitor’s own browser.
Cloud agents 17
An AI drives a browser in someone’s cloud.
- AGI AgentAgentIdentity: Signed
- Anchor BrowserAgentIdentity: Signed
- Bedrock AgentCore BrowserAgentIdentity: Signed
- ChatGPT agentAgentIdentity: Signed
- Cloudflare Browser RunAgentIdentity: Signed
- FirmlyAgentIdentity: Signed
- Google-AgentAgentIdentity: Signed
- HenryAgentIdentity: Signed
- HyperbrowserAgentIdentity: Hidden
- KernelAgentIdentity: Signed
- ManusAgentIdentity: Signed
- NekudaAgentIdentity: Signed
- RyeAgentIdentity: Signed
- SteelAgentIdentity: Hidden
- Stripe LinkAgentIdentity: Signed
- StrivveAgentIdentity: Signed
- TwinAgentIdentity: Signed
Agent frameworks 5
Libraries developers build agents with.
Assistants fetching for a user 26
Fetched because a person asked an assistant.
- Amzn-UserAgentIdentity: User agent
- BuddyBotAgentIdentity: User agent
- ChatGPT connectorsAgentIdentity: IP list
- ChatGPT-UserAgentIdentity: IP list
- Claude CodeAgentIdentity: IP list
- Claude-UserAgentIdentity: IP list
- CursorAgentIdentity: Signed
- DevinAgentIdentity: User agent
- GeistHaus PageFetcherAgentIdentity: User agent
- Gemini CLIAgentIdentity: User agent
- Gemini Deep ResearchAgentIdentity: User agent
- Google-GeminiNotebookAgentIdentity: IP list
- Kagi fetcherAgentIdentity: User agent
- Kimi-UserAgentIdentity: User agent
- LinerBotAgentIdentity: User agent
- Meta-ExternalFetcherAgentIdentity: Signed
- MistralAI-UserAgentIdentity: IP list
- Mozilla TabstackAgentIdentity: User agent
- opencodeAgentIdentity: User agent
- Perplexity-UserAgentIdentity: IP list
- PhindBotAgentIdentity: User agent
- Poggio-CitationsAgentIdentity: User agent
- QualifiedBotAgentIdentity: User agent
- UseAIAgentIdentity: User agent
- wpbotAgentIdentity: User agent
- WRTNBotAgentIdentity: User agent
List your agent
Publish an A2A Agent Card at https://your-domain/.well-known/agent-card.json, then submit your domain or the card URL. We read the card within minutes, and check it again every week.