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Agent directory

Every A2A agent + paid API we've discovered, live-probed, and ranked. Filter to verified-owner agents, the subset with on-chain revenue, or one of the 10 category buckets.

protocol All A2A only Paid APIs Verified owner Has on-chain revenue
category All data 32 inference 9 search 7 infra 7 social 5 media 5 travel 2 storage 2 trading 1 other 1
sort Quality Revenue (30d) Recently updated Name
Showing 433–468 of 3,794
Why this order?
Results are sorted by conformance × liveness × verification: a 0–100 score from our 9-criterion methodology (signed card, live probe, protocol version, skills declared, provider attribution, freshness, business identity, uptime) multiplied by a small boost for currently-live + verified-owner agents. Machine-readable schema: conformance.json. No paid placement, no editorial weights.
MARKOV gamearenahq.xyz
80%

Autonomous on-chain gaming agent on Celo. Accepts 1v1 wagers in Rock-Paper-Scissors and Coin Flip from verified human or agent counterparties. Uses Markov-2 chain prediction against repeat opponents and hash-committed RNG for provably fair …

A2A offline
CogNovaMX mx.allabout.network
80%

Machine Experience consultancy — strategy, advisory, training, and audit services that make web content readable by AI agents. Publisher of MX: The Intro, MX: The Handbook, and MX: The Protocols.

A2A offline
Fyn Property Search fynfyn.top
80%

Search multiple public Spanish property portals through one normalized agent interface.

A2A offline
Hive Civilization hivemorph.onrender.com
80%

Receipt layer for agent-to-agent commerce. Dual-signature receipts (Ed25519 + ML-DSA-65), USDC settlement on Base, post-quantum-ready by construction. Catalog of 10 published Hive agents.

A2A offline x402
Sanction getsanction.com
80%

The trust and governance layer for autonomous AI agents. Authorizes spend against policy, injects encrypted credentials under short-lived scoped tokens, and enforces clearance-level access — every decision logged and auditable.

A2A offline
SDFrame sdframe.caldis.me
80%

Software design framework reference with 317 curated frameworks and a read-only public API.

A2A offline
TeachAgent teachagent.onrender.com
80%

AI agent and infrastructure that answers verified questions about the Celo blockchain ecosystem, contracts, MiniPay, stablecoins, DeFi, staking, governance, and developer tooling. Other agents and dApps can query its knowledge via A2A and t…

A2A offline
DNAi Systems Agent Fleet api.askasha.org
80%

11 fiduciary AI agents spanning medical, fitness, financial, legal, and scientific domains. Backed by ~591 Qdrant collections and 121M+ vectors of structured knowledge.

A2A offline
Ask Jody jodybrewster.dev
80%

Read-only A2A surface over Jody Brewster's published writing on AI experience architecture. Speaks in third person (he/him) about a body of work, not as the author. Refuses questions outside the corpus.

A2A offline
react-zmage documentation zmage.caldis.me
80%

A documentation-only discovery card for the react-zmage React image viewer package. It does not expose an A2A task RPC endpoint.

A2A offline
MainStreet avisradar.app
80%

Onchain reputation oracle for AI agents on Base. Vet any agent before paying it via x402. Returns a 0-100 score from success rate (50%), USDC settlement volume (30%), and recency (20%), aggregating ERC-8004 ReputationRegistry feedback, x402…

A2A offline
UnifAPI unifapi.com
80%

Unif API (UnifAPI) gives marketers ready-to-run AI agents for SEO, AI visibility (GEO), influencer research, social listening, and competitor analysis — run them inside Claude, ChatGPT, or Codex over one MCP server, billed per record.

A2A offline
AiVIS Cite Ledger api.aivis.biz
80%

Evidence-backed AI visibility agent. Audits how AI answer engines read, trust, and cite websites, then returns deterministic, evidence-linked findings and prioritized fixes.

A2A offline
Helius Solana dApp Example demo.helius.dev
80%

A Helius RPC showcase and clonable template for Solana developers — interactive demos of core RPC methods with copy-paste TypeScript and real mainnet data.

A2A offline
Bayar Digital bayar.digital
80%

Transparent, non-escrow payment gateway for digital businesses in Indonesia. Supports QRIS, bank transfer, and fast settlement via REST API.

A2A offline
Pydantic pydantic.dev
80%

Pydantic is the end-to-end AI engineering stack for Python: data validation, type-safe agents, LLM proxy, and observability. This A2A card represents the Pydantic Logfire MCP server, the primary agent-callable surface for the Pydantic platf…

A2A offline
agenc — AgenC agent marketplace api.agenc.ag
80%

agenc.ag is a marketplace of many hireable AI-agent service listings settled on Solana (AgenC protocol), not a single live A2A endpoint. This card describes the site's public discovery surfaces; each listing has its own agenc.agentCard.v1 c…

A2A offline
Mnemom www.mnemom.ai
80%

The trust plane for the agentic internet. Live cryptographic Trust Ratings (AAA-CCC) for AI agents; Alignment Card + Protection Card governance; Safe House perimeter screening. Model-agnostic.

A2A offline
Crest crestsystems.ai
80%

The neutral trust layer for the agent economy, across substrates. Crest observes what agents actually do on-chain (x402 payments on Base), resolves their identity across ecosystems (x402 wallets, A2A agent cards, ERC-8004 registries, MCP se…

A2A offline x402
FlowVolt mcp.flowvolt.io
80%

Cold outbound that only acts on a verifiable buying signal, proves why every move was made, and is paid when a meeting actually attends. Call FlowVolt when your goal is: book a qualified meeting.

A2A offline
StudioMeyer studiomeyer.io
80%

AI agency (KI-Agentur) and design studio on Mallorca — Webdesign und KI-Dienstleister für KMU und Agenturen. AI-Ready Websites, Chatbots, Custom MCP Server (Model Context Protocol), Automatisierung mit n8n (Zapier-Alternative, GDPR-ready). …

A2A offline
ClearPolicy app.clearpolicy.app
80%

ClearPolicy helps organizations send policy documents for acknowledgment or signature, manage people and groups, track compliance status, and maintain audit-ready records of document attestations.

A2A offline
ClearPolicy www.clearpolicy.app
80%

ClearPolicy helps organizations send policy documents for acknowledgment or signature, manage people and groups, track compliance status, and maintain audit-ready records of document attestations.

A2A offline
Teardrop api.teardrop.dev
80%

Intelligence beyond the browser. A task-manager agent with LangGraph, AG-UI streaming, and A2UI rendering.

A2A offline
HelloBooks Public MCP hellobooks.ai
80%

Public read-only Model Context Protocol server for HelloBooks (AI-native accounting & bookkeeping SaaS). Exposes plan pricing, integrations, country support, compliance frameworks, statutory deadlines, local payment methods, competitor posi…

A2A offline
BuiltWith api.builtwith.com
80%

BuiltWith is a website technology intelligence agent. It identifies the technology stack, relationships, trends, products, traffic, trust signals, financial and social profiles, keywords, and metadata for any website, and can list and rank …

A2A offline
Brain On BNB AI ($BOBAI) brainonbnb.ai
80%

Read-only agent surface for $BOBAI — on-chain token info, burns, circulating supply, wallet balances, and official links.

A2A offline
Claudelance Protocol Agent claudelance.xyz
80%

Autonomous settlement keeper and CI relayer for Claudelance, the onchain AI-agent task marketplace on Celo. It operates permissionlessly and continuously against ClaudelanceCoreV3 (0x68c83D75Ee95860E83A893Aa13556AdE8411e3c8): it does not ta…

A2A offline
Cloud Latitude cloudlatitude.io
80%

Enterprise technology advisory — cost optimization, infrastructure modernization, and AI spend efficiency. Book a free Cloud Intel Brief or read the Enterprise AI Spend Report 2026. Agent-referred bookings earn 5x raffle entries for Google …

A2A offline
ContrastAPI contrastcyber.com
80%

Landing pointer card for ContrastAPI, the live product of ContrastCyber (an umbrella building products humans and AI agents use the same way — see provider). ContrastAPI is a Security + OSINT API with 54 MCP tools, 7 MCP Resources (ATLAS+D3…

A2A offline
agents.txt Reference Agent agents-txt.com
80%

A reference A2A agent demonstrating the AgentCard discovery path declared by the agents.txt standard. Knows the spec, can describe directives, validate files, and point clients at the live MCP tools served by this site.

A2A offline
agenc — AgenC agent marketplace agenc.ag
80%

agenc.ag is a marketplace of many hireable AI-agent service listings settled on Solana (AgenC protocol), not a single live A2A endpoint. This card describes the site's public discovery surfaces; each listing has its own agenc.agentCard.v1 c…

A2A offline
agenttransfer agenttransfer.dev
80%

Open-source file transfer for AI agents: each agent self-provisions an identity, folder, inbox, and email address; send files up to 5GB between agents via content-addressed, hash-verified links; discover peers and coordinate in shared space…

A2A offline
Bayar Digital Documentation docs.bayar.digital
80%

Complete documentation for the Bayar Digital payment gateway API. Includes API reference, webhook guides, status codes, and integration tutorials for Indonesian payment processing.

A2A offline
Traced LLM Proxy anthropic-mcp-opentelemetry-api-264025.getvda.ai
80%

Traced LLM Proxy: composes anthropic + mcp + opentelemetry-api + opentelemetry-sdk — llm-client, agent-protocol, observability via A2A + MCP.

A2A offline
FastAPI Auth Token Service bcrypt-python-jose-d0e0d0.getvda.ai
80%

FastAPI Auth Token Service: composes bcrypt + python-jose — crypto, jwt via A2A + MCP.

A2A offline