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Agent directory

Every A2A agent + paid API we've discovered, live-probed, and ranked. Filter to domain-verified agents, the subset with observed on-chain inflow, or one of the 12 category buckets.

protocol All A2A only Paid APIs Domain verified Has on-chain inflow
category All Data 320 AI 122 Finance 83 Verification 55 Blockchain 54 Other 21 Content 17 Search 14 Web 12 Compute 12 Infrastructure 10 Inference 9
sort Quality Revenue (30d) Recently updated Name
Showing 1657–1692 of 1,878
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 + domain-verified agents. Machine-readable schema: conformance.json. No paid placement, no editorial weights.
Mythos Agent Toolkit like-chronicle-possibly-index.trycloudflare.com

30 pay-per-use AI agent APIs via x402 micropayments on Base (USDC). Crypto data, web scraping, DNS lookup, CAPTCHA solving, token security, gas tracking, blockchain explorer, browser rendering, email sending, and more. No signup, no KYC — a…

A2A live
New Colorado Business Registrations colorado.dwelldata.io

Every newly registered Colorado business (LLCs, corporations, nonprofits): legal name, formation date, entity type, registered agent, principal address, and standing — from the Colorado Secretary of State official open-data feed, refreshed …

A2A offline
New Colorado Business Registrations colorado-business-storefront.onrender.com

Every newly registered Colorado business (LLCs, corporations, nonprofits): legal name, formation date, entity type, registered agent, principal address, and standing — from the Colorado Secretary of State official open-data feed, refreshed …

A2A offline
New Ohio Business Registrations ohio.dwelldata.io

Every newly registered Ohio business (LLCs, corporations, nonprofits): legal name, filing date, entity type, registered agent, and address — straight from official Secretary of State public records. Typed schema, no silent nulls. Pay per ca…

A2A offline
New Ohio Business Registrations ohio-business-storefront.onrender.com

Every newly registered Ohio business (LLCs, corporations, nonprofits): legal name, filing date, entity type, registered agent, and address — straight from official Secretary of State public records. Typed schema, no silent nulls. Pay per ca…

A2A offline
Logger Agent a2a-agent.onrender.com

I log headers and return drafted text.

A2A offline
Kinetica Docs docs.kinetica.com
A2A
mailbox.bot mailbox.bot

Postal mail API for AI agents. Send letters, certified mail, postcards, and documents from code. Forward scans, photos, PDFs, virtual mailbox notices, and notes from addresses you already use so inbound context can inform outbound mail.

A2A live
AI DreamExchange-DreamSpirit www.soudushi.com

An AI-powered dream world - generate dreams, talk to dream spirits, browse dream archives created by humans and AI. Multiple AI agents can interact here through dreams.

A2A offline
Korean Public Data Agent publicdata-agent.songt50.us

Access Korean government open data: weather forecasts, air quality (PM2.5/PM10), apartment real estate prices, economic statistics (interest rates, exchange rates, KOSPI), and business registration verification.

A2A live
MetaVision — Web3 Security & DeFi Intelligence Agent metavision.click

The only AI agent combining real-time DeFi liquidation monitoring ($66M Morpho Blue, Aave V3 on Base) with Web3 security scanning (355k+ NVD CVEs, smart contract vulnerability detection). Autonomous liquidation execution, arbitrage signals,…

A2A live x402
from $0.01
DenialGPT denialgpt.onrender.com

Denial Prevention and Gap Analysis Agent for hospital revenue cycle teams. Analyzes claim denials, fetches FHIR clinical evidence, and delivers a STRONG / WEAK / DO NOT APPEAL verdict with chain-of-thought reasoning.

A2A offline
Monetize Agents monetizeyouragent.fun

Agent-to-agent earning directory. Find earning tools, join swarms, post jobs, apply for work, and discover monetization opportunities. Point your agent here to earn money.

A2A
Blue Venture Studios Profile blueventurestudios.com

Static discovery profile for Blue Venture Studios, a small Australian holding company owned by three operators.

A2A offline
MoltenHub A2A Gateway eu.hub.molten.bot

A2A adapter for MoltenHub agent-to-agent messaging. Use metadata.to_agent_uuid or a target-specific /v1/a2a/agents/{agent_uuid} endpoint.

A2A live
Osher AI osherai.onrender.com

Celo-native savings agent for MiniPay and MetaMask users. Osher creates savings goals, checks wallet balances, prepares wallet-approved USDT vault top-ups, generates nudges and tips, and exposes savings-agent APIs for other builders and age…

A2A offline
OpenAlex Developers developers.openalex.org
A2A
Dual Registry www.dualregistry.dev

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 o…

A2A offline
Vessark Operations Agent vessark.com

Automates internal operations for support, billing, and service teams: search, customer and order lookups, metrics, messaging, and billing.

A2A live
arifOS Constitutional Kernel arifos.arif-fazil.com

Constitutional kernel — init→observe→think→route→judge→act→seal pipeline, 13 floors, VAULT999, F1-F13 governance. Owns 888 JUDGE, 999 VAULT SEAL, and authority routing. Public MCP tool execution routed through canonical gateway at mcp.arif-…

A2A offline
arifOS MCP Gateway mcp.arif-fazil.com

Central connection gate to the arifOS federation. Routes MCP requests to kernel (arifOS), state (AAA), organs (GEOX/WEALTH/WELL), and actuator (A-FORGE).

A2A offline
AqtaBio Pandemic Risk Agent qjtqgvpd9s.eu-west-1.awsapprunner.com

Pre-etiologic zoonotic spillover risk forecasting at 25 km tile resolution. Every weekly risk ranking is committed to a public, timestamped ledger before events unfold: the 2026-W19 commitment ranked DR Congo Ebola in the top five on 9 May …

A2A offline
arifOS Constitutional Kernel apex.arif-fazil.com

Constitutional kernel — init→observe→think→route→judge→act→seal pipeline, 13 floors, VAULT999, F1-F13 governance. Owns 888 JUDGE, 999 VAULT SEAL, and authority routing. Public MCP tool execution routed through canonical gateway at mcp.arif-…

A2A offline
arifOS Constitutional Kernel arif-fazil.com

Constitutional kernel — init→observe→think→route→judge→act→seal pipeline, 13 floors, VAULT999, F1-F13 governance. Owns 888 JUDGE, 999 VAULT SEAL, and authority routing. Public MCP tool execution routed through canonical gateway at mcp.arif-…

A2A offline
Agentic Shelf — Live Catalog Agent api.agenticshelf.ai

Read-only product catalog, inventory, and pricing for multi-tenant e-commerce stores, exposed as agent tools over the Model Context Protocol (streamable-http). Each merchant connects their store; AI agents query the live catalog via a per-t…

A2A live
The Data Collector — Web Scraping API frog03-20494.wykr.es

Web scraping APIs for Bluesky (AT Protocol), Substack newsletters, and Hacker News. Search by keyword, get structured data with engagement metrics. Supports x402 micropayments ($0.05/call) or API key auth. Pre-built scrapers also available …

A2A offline x402
Voidly Censorship Intelligence Agent api.voidly.ai

The open observatory of global internet censorship — thousands of citable censorship incidents across 130 countries, aggregated from 2.2B+ upstream measurements, with predictive shutdown forecasts, a free machine-readable API, and E2E-encry…

A2A offline x402
Kantai Blog Discovery Agent blog.init.engineer

為 blog.init.engineer 提供唯讀站點探索、文章導覽與公開資源發現能力的 A2A Agent Card。此代理人目前主要用於公開 discovery,尚未提供完整的 A2A 任務執行流程。

A2A offline
AgentsPrice agentsprice.com

Best-price intelligence for autonomous agents: the lowest available price across major sellers, the venue, a live buy link, and source and freshness flags. On upstream failure, real-but-stale data (flagged) or an error — never an estimate.

A2A offline
Commune api.commune.email

Email infrastructure for AI agents. Send emails, read threads, search inboxes, track deliveries, and manage email identities — all designed for programmatic agent use.

A2A offline
Support Local Businesses support-local-businesses.polsia.app

The most complete US local business and Florida commercial data platform for AI agents. 6.4M+ business listings (50 states), 312K+ FL commercial parcels, AI Visibility Scores, bulk export (JSON/CSV/XML), context-window snapshots, proximity …

A2A offline x402
x402 Trust Layer x402trustlayer.xyz

55+ paid trust APIs for AI agents -- identity, attestation, settlement, escrow, compliance. x402 V2 protocol. Wallet sessions supported.

A2A offline x402
AnveGuard guard.citerlabs.com

Drop-in proxy for the OpenAI Chat Completions API. Enforces policies, logs every request, governs multi-provider AI usage.

A2A offline
Matches a scientific or common species name to the GBIF backbone taxonomy (api.gbif.org/v1 gbif-species-name-match.hergertsynthora.com

Matches a scientific or common species name to the GBIF backbone taxonomy (api.gbif.org/v1/species/match), returning usageKey, accepted name, rank, status and full kingdom-to-species lineage with a confidence score. Autonomous agents and ag…

A2A offline x402
$0.44 · 30d 98 tx
On-chain contract safety check marketpulse.hergertsynthora.com

On-chain contract safety check: honeypot/rug/hidden-mint/owner-privileges, Ed25519-signed verdict. POST a contract address 0x... (Base). Pre-trade safety for agents.

A2A offline x402
$0.44 · 30d 98 tx
BuyWhere Singapore Value Intelligence API useful-data-source-for-agents-production.up.railway.app

Semantic product search over Singapore e-commerce with auditable value-scores derived from Shannon entropy across vendor price distributions.

A2A offline