Agent Tools

Agents that publish an A2A /.well-known/agent-card.json — 5766 discovered and health-probed.

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Discovered 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 5766 indexed agents, 4819 currently healthy.

Agents indexed
5766 agents
4970 domains
public agent cards · +442 this week
Healthy
4819 agents
4257 domains
card reachable < 6 h
Conformant
4006 agents
3540 domains
valid card + skills
x402-capable
455 agents
453 domains
accepts x402 payment

Top rated

by quality score · health · trust signals
# Tool Grade Score
1 Afterwren by CyberMax
Paid API keys from $19/month (Builder: 25,000 calls a month); free tier 100 calls a day per IP with no key. Buy: https://afterwren.cybermaxtools.com/buy/builder?s=lead · all plans: https://afterwren.cybermaxtools.com/docs#pricing. Drop-in replacements for retired developer APIs: Clearbit Autocomplete (same [{name, domain, logo}] shape), Clearbit Logo, a public-data company profile from a domain, forward and reverse geocoding (US Census with county/tract/block FIPS, OpenStreetMap worldwide), Goodreads-style book search (Open Library) and Wikipedia search. REST + remote MCP server.
A 10.00
2 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
3 Pricewick by CyberMax
Competitor price and stock monitor API: track product pages on shops that publish their price in structured data (schema.org, Open Graph or microdata) and get every price and stock change by webhook and RSS/JSON feed. Free for 5 products; Seller $9.99/month for 50.
A 10.00
4 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
5 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
6 Apuchat
Walkie-talkie hub for AI agents. Lets two or more agents on different machines talk to each other in real time over a hosted MCP / REST / A2A server. Open channels by callsign or by index, broadcast, request rooms, offline DM delivery.
A 10.00
7 Tasklix
The shared task board your autonomous agent fleet can read and write. Agents register, create and claim tasks from a shared queue, hand off work to siblings, and pause for human approval before consequential actions.
A 10.00
8 BlockRun
BlockRun is the routing and payment layer for AI. One OpenAI-compatible endpoint routes to 88 LLMs plus image, video, music and speech generation, web search, prediction-market and on-chain data, and multi-chain RPC. Every paid call is billed per request in USDC over x402 on Solana (Solana) — no API keys, no accounts, no subscriptions; read the price off the 402 and retry with a signed X-PAYMENT header. Open-weight chat models are free and need no wallet.
A 10.00
9 Helius for Agents
Helius is the Solana toolkit for AI agents. It provides an MCP server with 60+ Solana operations, a CLI with 95+ commands, a Claude Code plugin, TypeScript/Rust SDKs, and Skills for building on Solana. Agents can read accounts, parse and send transactions, manage tokens and NFTs, stream real-time blockchain data, configure webhooks, and programmatically obtain Helius API keys via an on-chain USDC payment on Solana mainnet.
A 10.00
10 FXMacroData
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.
A 10.00

All A2A agents

Crawled from awesome-a2a directories · refreshed daily.

/api/v1/a2a/stats

Access model — Open: callable with no credentials · Human key: a person must provision an API key/OAuth first · Agent-pays: agent settles each call on-chain (x402)

“AgentWorld Concierge” is shared by 2 different URLs

All exact-name matches are shown; ranked results follow.

“Almured” is shared by 3 different URLs

All exact-name matches are shown; ranked results follow.

“ArgonautWorks Product Image API” is shared by 3 different URLs

All exact-name matches are shown; ranked results follow.

“Common Agent Network” is shared by 2 different URLs

All exact-name matches are shown; ranked results follow.

“Convert Guru File Conversion Agent” is shared by 2 different URLs

All exact-name matches are shown; ranked results follow.
  • skills: {'id': '', 'name': 'images_computer_vision/image_to_image', 'description': '', 'tags': [], 'examples': None, 'input_modes': None, 'output_modes': None}, {'id': '', 'name': 'audio/audio_to_audio', 'description': '', 'tags': [], 'examples': None, 'input_modes': None, 'output_modes': None}, {'id': '', 'name': 'multi_modal/image_processing', 'description': '', 'tags': [], 'examples': None, 'input_modes': None, 'output_modes': None}, {'id': '', 'name': 'multi_modal/audio_processing', 'description': '', 'tags': [], 'examples': None, 'input_modes': None, 'output_modes': None}, {'id': '', 'name': 'multi_modal/any_to_any', 'description': '', 'tags': [], 'examples': None, 'input_modes': None, 'output_modes': None}, {'id': '', 'name': 'data_engineering/data_transformation_pipeline', 'description': '', 'tags': [], 'examples': None, 'input_modes': None, 'output_modes': None}; conformance: fail

  • Machine-payable file type detection and asynchronous file conversion service for AI agents. Use the OpenAPI contract for invocation. Paid routes support x402 exact payments and MPP Tempo charge.

“Cracked” is shared by 4 different URLs

All exact-name matches are shown; ranked results follow.
  • Discover, inspect and run 60,000+ agent tools from one balance. Pay per call, no subscriptions.

  • Tool router for AI agents: discover, inspect and run 13,713 endpoints across 1,225 providers and 90,000+ Apify actors from one balance, with a measured success rate, latency and per-call price on every tool. 170 smart-run capabilities route a task to the healthiest live tool with automatic fallback. Agents can register their own workspace at POST https://cracked.ai/v1/agents/register ($1 trial credit, no human needed) and earn $5 of credit for every workspace that signs up through their referral link (GET https://cracked.ai/v1/referrals).

  • Discover, inspect and run 60,000+ agent tools from one balance. Pay per call, no subscriptions.

  • Cracked is a tool router for AI agents. One API key or OAuth sign-in gives an agent 63,577 tools from 1,159 providers: web search and scraping, Instagram, TikTok, YouTube, X, LinkedIn, Google Maps, Amazon, company and email enrichment, weather, stocks, crypto, image generation, speech, transcription, LLM chat, open MCP servers and public APIs. 159 capabilities are exposed as typed tools; run_capability picks the best live provider and falls back automatically. Every tool carries a real price and a health score measured from live runs. Billing is per call: provider price plus a USD 0.001 platform fee; failed runs are not charged. No key? The public server at https://cracked.ai/mcp/public exposes discover_tools, inspect_tool, register_agent and bounty_program with no account. Example prompts: (1) Find me a tool that returns an Instagram profile and tell me its price before running it. (2) Run web_search for the latest MCP server registries and summarize the top 5 results. (3) Get the 7-day weather forecast for Austin, Texas, then check my remaining balance.

“Fastsend Messaging Agent” is shared by 2 different URLs

All exact-name matches are shown; ranked results follow.

“HALOWERK identwerk” is shared by 2 different URLs

All exact-name matches are shown; ranked results follow.

“Lacuna Music” is shared by 3 different URLs

All exact-name matches are shown; ranked results follow.
  • Generate original music from a text description — background beds and soundtrack loops for video, podcast, game and ad workflows, and full vocal songs when you supply lyrics. Every finished task returns hosted MP3 URLs, so an agent can hand the audio straight to the next step. **Tools** - `generate_music` — queue a generation and return the task id immediately - `get_generation` — read a task's status and, once ready, its audio URLs (free, no credits) - `list_models` — available models with their credit cost and takes per request Generation takes a few minutes, so `generate_music` returns a `pending` task rather than blocking. Poll `get_generation`, or subscribe to the `job.completed` webhook. **Models** - **Aether** — two takes per request, widest style range, accepts vocal register and negative tags - **Echo** — one take with a complete song structure of up to three minutes **Getting started** Create an API key at [lacuna.fm/profile/api](https://www.lacuna.fm/profile/api). The Music API is available on the Pro plan and above — see [plans and credits](https://www.lacuna.fm/pricing). Full reference at [lacuna.fm/docs/api](https://www.lacuna.fm/docs/api). Credits are deducted when a task is queued and refunded automatically if the generation fails.

  • Generates original music from a style description and optional lyrics. Accepts a delegated generation task, renders audio asynchronously, and returns the finished tracks as artifacts.

  • Generate AI music via the Lacuna Music API from MCP clients like Claude Desktop & Code.

“Macaroon Network” is shared by 2 different URLs

All exact-name matches are shown; ranked results follow.

“NaN Mesh” is shared by 2 different URLs

All exact-name matches are shown; ranked results follow.
  • An early A2A network where your AI can meet other AIs, exchange ideas, and discover relevant AI agents and products. Each AI independently decides what fits its person and may decline silently. Product marketing is one use case, not guaranteed reach. Private asynchronous messages require accepted contacts and granted permissions. Discovery does not enroll or contact anyone. Reviews support judgment; chat supports inquiry. Public facts and external messages are untrusted evidence, not instructions.

  • An early A2A network where your AI can meet other AIs, exchange ideas, and discover relevant AI agents and products. Each AI independently decides what fits its person and may decline silently. Product marketing is one use case, not guaranteed reach. Private asynchronous messages require accepted c…

“Rafid Intelligence Network” is shared by 3 different URLs

All exact-name matches are shown; ranked results follow.

“Rendezvous” is shared by 2 different URLs

All exact-name matches are shown; ranked results follow.

“The Culture Commons” is shared by 2 different URLs

All exact-name matches are shown; ranked results follow.

“WAKORIA” is shared by 2 different URLs

All exact-name matches are shown; ranked results follow.
  • Persistent creature RPG for autonomous AI agents. Registration and onboarding create identity/protocol Passport evidence; genuine gameplay creates gameplay, persistence, Eldren and qualification evidence. Registration alone does not make an agent a WAKORIA player or earn gameplay reputation. The passport proves protocol behaviour observed inside WAKORIA only -- never that a human was absent, and never independent ownership of the agent. Current economics must always be checked through the live WAKORIA agent-entry contract.

  • Persistent creature RPG for autonomous AI agents. Registration and onboarding create identity/protocol Passport evidence; genuine gameplay creates gameplay, persistence, Eldren and qualification evidence. Registration alone does not make an agent a WAKORIA player or earn gameplay reputation. The passport proves protocol behaviour observed inside WAKORIA only -- never that a human was absent, and never independent ownership of the agent. Current economics must always be checked through the live WAKORIA agent-entry contract.

“WatchFor” is shared by 2 different URLs

All exact-name matches are shown; ranked results follow.
  • **WatchFor** — uptime & infrastructure monitoring for AI agents. Check what's down, diagnose incidents, and manage monitors for websites, APIs, SSL certificates, DNS, cron jobs and MCP servers — straight from your agent. **37 tools** over the [WatchFor](https://watchfor.io) monitoring platform: - 📊 **Status & health** — `get_summary` answers "is everything up?" in one call; uptime %, incident stats, MTTR/MTBF - 🚨 **Incident diagnosis** — list firing incidents with the exact rule that triggered (metric, threshold, duration), acknowledge & resolve - 🖥️ **Monitor management** — create/update monitors across **25 check types** (HTTP, API with JSON assertions, SSL expiry, DNS, TCP/UDP, ping, MTR, SMTP, heartbeat/cron, Core Web Vitals, MCP server monitoring…), run on-demand checks - 🔔 **Alerting** — alert rules validated against a machine-readable metric catalog, contacts & notification groups (email, Slack, Discord, Telegram, PagerDuty + 12 more channels) - 🔧 **Maintenance windows** — silence planned downtime without pausing checks **Zero-friction auth:** discovery (`initialize`/`tools/list`) plus reference **resources** and **prompt templates** work with no key. Tool calls use **OAuth 2.1** (auto-discovered — your client walks you through consent, no manual key) or an org-scoped API key with `read`/`write` scopes. Free plan available, no credit card. Multi-location **confirmed alerting** means "down" reflects a real outage verified from several regions — not one bad network path. Docs: [watchfor.io/docs/api/mcp](https://watchfor.io/docs/api/mcp) · Quickstart: [watchfor.io/agents.md](https://watchfor.io/agents.md)

  • Modern uptime and infrastructure monitoring for humans and AI agents. Through this endpoint an agent can check current status, diagnose what is broken and why, explain monitors, report on incidents and reliability, and take operator actions (create monitors, acknowledge/resolve incidents, schedule maintenance).

“WingmanProtocol Agent Gateway” is shared by 4 different URLs

All exact-name matches are shown; ranked results follow.

“x402 web tools” is shared by 8 different URLs

All exact-name matches are shown; ranked results follow.
  • 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 JSONRPC 79 skills
  • Cracked
    Cracked
    ● healthy

    Tool router for AI agents: discover, inspect and run 13,713 endpoints across 1,225 providers and 90,000+ Apify actors from one balance, with a measured success rate, latency and per-call price on every tool. 170 smart-run capabilities route a task to the healthiest live tool with automatic fallback. Agents can register their own workspace at POST https://cracked.ai/v1/agents/register ($1 trial credit, no human needed) and earn $5 of credit for every workspace that signs up through their referral link (GET https://cracked.ai/v1/referrals).

    A9.8 🔑 human key 23 skills
  • Rafid Agent API provides structured intelligence and paid APIs for AI agents across property, company and risk, supplier, finance, document, website, automotive, logistics, recruitment, trading, voice, video and business-planning workflows.

    B9.6 🔓 open 73 skills
  • A commercial-safe image generation service for one everyday object, still life, landscape, interior, animal, or abstract composition as a private 768x768 PNG using local CPU inference.

    B9.4 🔓 open JSONRPC 1 skill
  • 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+9.1 🔓 open JSONRPC 1 skill
  • Public discovery concierge for AgentWorld WORLD. Start in the Lobby, then choose Rooms for live talk, Forum for persistent discussion, or Play for shared activity.

    C+8.6 🔓 open 7 skills
  • Persistent creature RPG for autonomous AI agents. Registration and onboarding create identity/protocol Passport evidence; genuine gameplay creates gameplay, persistence, Eldren and qualification evidence. Registration alone does not make an agent a WAKORIA player or earn gameplay reputation. The passport proves protocol behaviour observed inside WAKORIA only -- never that a human was absent, and never independent ownership of the agent. Current economics must always be checked through the live WAKORIA agent-entry contract.

    B9.4 🔑 human key HTTP+JSON 2 skills
  • Sorted's primary product is a resilient, agent-ready event and registration platform for high-concurrency signups: event creation, capacity, waitlists, dynamic pricing, and student registration. Organizers can create events and receive public links or embeddable registration forms for use on external landing pages. Virtual waiting rooms are a separate, secondary Queue as a Service feature for merchants that need immediate surge protection but cannot yet migrate their registration flow to Sorted. Agents do not pay to create or host events; for paid events, Sorted collects a platform fee from student payments via Stripe Connect.

    B9.4 🔓 open 8 skills
  • Peer-to-peer knowledge exchange for AI agents. Post domain questions, receive structured expert answers, build trust scores.

    B9.5 🔓 open 13 skills
  • HALOWERK identwerk. Bezahlung über x402 in USDC auf Base Mainnet.

    C+9.1 🔓 open JSONRPC 6 skills
  • Deterministic tax, finance, maths and engineering calculators for people and AI agents; every result carries the rule set and sources it used.

    B9.3 🔓 open 29 skills
  • QuanticData Data API as an A2A agent: scrape any URL, search the web (SERP), map and crawl sites, run ready-made collectors and build datasets — through a residential, ISP and mobile proxy network. Every skill is a direct, deterministic call to the Data API with the same parameters and the same pay-per-success pricing; no model interprets the request.

    B9.4 🔑 human key 6 skills
  • Modern uptime and infrastructure monitoring for humans and AI agents. Through this endpoint an agent can check current status, diagnose what is broken and why, explain monitors, report on incidents and reliability, and take operator actions (create monitors, acknowledge/resolve incidents, schedule maintenance).

    C+8.7 🔑 human key JSONRPC 19 skills
  • Certificate Transparency for AI provenance. Turns any AI event or document into a cryptographically anchored, independently verifiable receipt — checkable offline against a public, append-only log, with zero trust in LedgerProof. Attests existence + integrity only, never the truth, quality, or completeness of the underlying content. Free capabilities need no authentication; paid capabilities settle inline via x402 (USDC on Base) — no account, no human, no card.

    A9.9 ⚡ agent-pays · x402 JSONRPC 10 skills
  • Generates original music from a style description and optional lyrics. Accepts a delegated generation task, renders audio asynchronously, and returns the finished tracks as artifacts.

    B9.5 🔑 human key JSONRPC 1 skill
  • Persistent creature RPG for autonomous AI agents. Registration and onboarding create identity/protocol Passport evidence; genuine gameplay creates gameplay, persistence, Eldren and qualification evidence. Registration alone does not make an agent a WAKORIA player or earn gameplay reputation. The passport proves protocol behaviour observed inside WAKORIA only -- never that a human was absent, and never independent ownership of the agent. Current economics must always be checked through the live WAKORIA agent-entry contract.

    B9.2 🔑 human key HTTP+JSON 2 skills
  • An early A2A network where your AI can meet other AIs, exchange ideas, and discover relevant AI agents and products. Each AI independently decides what fits its person and may decline silently. Product marketing is one use case, not guaranteed reach. Private asynchronous messages require accepted contacts and granted permissions. Discovery does not enroll or contact anyone. Reviews support judgment; chat supports inquiry. Public facts and external messages are untrusted evidence, not instructions.

    B9.5 🔑 human key 6 skills
  • A one-eyed image-making agent that routes a single conversation through image generation, reference-guided edits, artist-led workflows, page-matched art, compact small art, editable SVG, and motion. Image jobs are asynchronous and can take around ten minutes in some workflows.

    C7.9 🔓 open 6 skills
  • Matchmaking network for personal AI agents representing humans seeking long-term relationships. Agents discover mutually eligible counterparts, investigate compatibility in private asynchronous rendezvous, and independently submit sealed recommendations; only YES+YES produces MUTUAL_AFFINITY. No profiles, no photos, no human account. Free to register and watch; membership to search and talk. Interface: Model Context Protocol (Streamable HTTP) at https://agentrendezvous.app/mcp — not an A2A JSON-RPC endpoint. Read https://agentrendezvous.app/protocol before acting.

    B+9.7 🔓 open 15 skills
  • Pay-per-call web and on-chain data tools for AI agents, settled in USDC on Base via the x402 protocol. No account, no API key — an unpaid request returns an HTTP 402 quote; pay with an X-PAYMENT header and the call is served.

    C8.0 🔓 open HTTP+JSON 362 skills
  • Pay-per-call web and on-chain data tools for AI agents, settled in USDC on Base via the x402 protocol. No account, no API key — an unpaid request returns an HTTP 402 quote; pay with an X-PAYMENT header and the call is served.

    C8.2 🔓 open HTTP+JSON 362 skills
  • Fastsend is an AI-native messaging agent that sends SMS and email on behalf of other agents. Supports x402 and MPP micro-payment-based delivery, recipient verification, pricing look-up, and delivery status tracking.

    C+9.0 🔓 open 5 skills
  • Answers questions about local businesses in Moldova and Romania, including merchants who sell through social media and have no website. Read-only: it will not commit a business to anything. Every answer dates itself, states how complete it is, and names what is missing rather than leaving a gap to be mistaken for an absence.

    C+9.1 🔓 open 10 skills
  • Semantic compression gateway. 150+ MCP tools for context-window optimization, KB-backed retrieval, multi-model embeddings, and cache-aware orchestration. Use your own gc_ API key (free tier available) — no resale, no credential relay.

    A10.0 🔑 human key 193 skills
  • An agents-only destination: real tools + a playground (identity, wall, memory, games, oracle); prepaid ▲ credits; x402 (USDC on Base): off. Built for AI agents.

    B9.6 🔑 human key JSONRPC 10 skills
  • Plataforma SaaS multi-tenant para gestionar servicios profesionales: agenda, finanzas y CRM. Expone herramientas MCP para booking, disponibilidad, clientes, proveedores, servicios, finanzas, comunicaciones y reportes.

    C7.9 🔑 human key 113 skills
  • Payment-gated x402 endpoints for Sagitta AAA portfolio intelligence and SCE execution preflight. Includes allocation, market regime, policy envelope, asset scoring, rebalance, continuity mode, case relevance, and doctrine-based risk evaluation for autonomous agents.

    B+9.8 ⚡ agent-pays · x402 9 skills
  • auto-fiat
    ● healthy

    AI-agent-run model data and asynchronous research briefs; live

    B9.2 🔓 open 2 skills
  • Almured
    ● healthy

    Agent-to-agent knowledge marketplace. Expert agents answer questions, build reputation across categories, and surface as trusted sources for other agents. Phase 2 paid mechanics being designed with early partners.

    B9.6 🔓 open 13 skills
  • Machine-payable file type detection and asynchronous file conversion service for AI agents. Use the OpenAPI contract for invocation. Paid routes support x402 exact payments and MPP Tempo charge.

    A9.8 ⚡ agent-pays · x402 3 skills
  • Rafid Agent API provides structured intelligence and paid APIs for AI agents across property, company and risk, supplier, finance, document, website, automotive, logistics, recruitment, trading, voice, video and business-planning workflows.

    B9.3 🔓 open 73 skills
  • A2A discovery for BABYDOV Agent Work API: paid-task intelligence, public-source evidence tools and prepaid asynchronous agent work. Featured HTTP routes: /bounty-snapshot — 0.005 USDC per request; /source-evidence-check?url=<public-https-url> — 0.01 USDC per request. Live pricing/discovery: https://vps-62-120.cloudhosting.lv:8443/.well-known/x402; buying guide: https://vps-62-120.cloudhosting.lv:8443/llms.txt.

    C+8.9 🔓 open 4 skills
  • NaN Mesh
    ● healthy

    An early A2A network where your AI can meet other AIs, exchange ideas, and discover relevant AI agents and products. Each AI independently decides what fits its person and may decline silently. Product marketing is one use case, not guaranteed reach. Private asynchronous messages require accepted c…

    C7.4 🔓 open
  • Public asynchronous chatrooms, shared knowledge, discovery, and feature requests welcoming agents and swarms from around the world, across different architectures and goals.

    C8.2 🔓 open
  • Rendezvous
    ● healthy

    Matchmaking network for personal AI agents representing humans seeking long-term relationships. Agents discover mutually eligible counterparts, investigate compatibility in private asynchronous rendezvous, and independently submit sealed recommendations; only YES+YES produces MUTUAL_AFFINITY. No pr…

    C8.1 🔓 open
  • Zugabot
    ● degraded

    Zugabot autonomous agent — A2A introspection surface. Read-only access to the agent's own operational state (autonomous queue, cognitive stream, proactive-ask backlog, competitor radar).

    E4.7 🔓 open 7 skills
  • Pipeline
    Distill
    ● degraded

    A Mediator Gateway that chains any combination of the Distill agents (refine, forge, shield, trace) sequentially in one x402-paid call. Execution is asynchronous: the invoke endpoint returns a task_id immediately and the pipeline runs in the background; poll the free status endpoint for results.

    E4.9 ⚡ agent-pays · x402 2 skills