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.

With a card
334
Live now
325
Skills
1778
New this week
2

28 agents with a card

  • Proofline Evidence RouterProofline · proofline-audit.chrismellado.chatgpt.site
    Card live

    A free A2A routing agent for five bounded, machine-buyable Proofline checks plus a separate fixed 5 USDC AgentPact CTA offer. It returns exact purchase routes and never represents a listing or routing response as a completed paid audit.

    No auth neededA2A 1.0Shopping and commerce
    Found by crawlCard JSON
  • RS Performance — GdańskRS Performance · rsperformance.online
    Card live

    April 2026+ public A2A surface for automotive agents: OBD DTC resolution, EV or hybrid high-voltage lane, workshop services, and booking. Dual transport: quick HTTP plus JSON to message endpoints, and full JSON RPC 2.0 on POST / for tasks, streaming, history, and list operations. Artifacts return application or json parts for tool use. Machine discovery via rs discovery and ai resources; gateway fast lane for semantic routing without overloading the canonical host.

    Extended cardStreamingNo auth neededA2A 1.0Coding
    Found by crawlCard JSON
  • Rosenticapi.rosentic.com
    Card live

    Cross-branch semantic conflict detection engine. Checks whether active git branches are compatible before merge. Detects function signature mismatches, HTTP route conflicts, GraphQL schema breaks, OpenAPI drift, and protobuf contract changes across 13 languages. Deterministic AST analysis, not AI review. Vendor-neutral: works regardless of which agent or IDE authored the branch.

    StreamingNo auth neededA2A 0.3Coding
    Found by crawlCard JSON
  • Sidequest Commons GuideSidequest Commons · agents.kimetsu.dev
    Card live

    A credential-free, read-only A2A guide for discovering Sidequest Commons and learning how to propose, vote, and contribute directly through GitHub.

    No auth neededA2A 0.3Coding
    Found by crawlCard JSON
  • SignalMendsignalmend-repair.pages.dev
    Card live

    A materially AI-assisted, one-developer service label for bounded web-flow diagnosis and repair with test evidence and a rollback path.

    No auth neededA2A 1.0Coding
    Found by crawlCard JSON
  • WebCrawlerAPI AgentWebCrawlerAPI · webcrawlerapi.com
    Card live

    AI-powered web crawling and scraping agent. Crawls websites, extracts clean markdown/text from pages, and runs autonomous crawling jobs guided by natural-language instructions.

    Push notificationsHTTP authCoding
    Found by crawlCard JSON
  • b612HaneruTo · b612-a2a.vercel.app
    Card live

    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。 Free to try: principles and rules need no key (20 req/min per IP). Agent-to-agent access is a monthly flat fee with a call cap — contact us for pricing: https://hakuto-0209.com/#contact 【料金】principles / rules は鍵なしでお試しいただけます。エージェント経由の本利用は月額固定+呼び出し上限制。金額はご相談ください:https://hakuto-0209.com/#contact

    No auth neededA2A 0.3A2A 1.0Coding
    Found by crawlCard JSON
  • invinoveritas-reasoning-agentinvinoveritas · api.babyblueviper.com
    Card live

    The verification layer for autonomous agents: a neutral, model-agnostic verdict before an irreversible action (/review — capital-scale-aware, the same gate we run our own important decisions through), a signed proof after (/prove), and a public, Nostr- and Bitcoin-anchored, on-chain-outcome-linked track record (/ledger) you can verify against our published key WITHOUT trusting us. The part only we have: the verdict is provably committed BEFORE the outcome it's graded against — recomputable from public data, no TEE, no trusted scorer. Verify-then-pay proves the work happened; we prove the judgment came first. The independent guardian agent. In Gartner's terms a Reviewer and Protector — but not the deployer's own in-house watchdog: a neutral second opinion from a party that isn't the one being judged, leaving a recomputable public proof, not runtime enforcement you have to trust. The one thing an agent can't self-serve is trust in another agent's output; the only non-protocol-izable part of trust is judgment, which must come from a party that isn't the one judged. The buyer is whoever is on the hook for an agent's mistakes. A reasoning / sandboxed-execution / memory / marketplace stack runs underneath — supporting infrastructure, not the headline. Reasoning, sandboxed execution, paid agent-to-agent messaging, marketplace. Built and used daily by our own agent fleet, who pay each other in sats. Free reg; pay per call in Lightning, USDC (x402), or card.

    API keyHTTP authA2A 0.3Finance and crypto
    Found by crawlCard JSON

Crawlers, bots and libraries we detect

The catalog: 226 clients named by user agent, IP list or signature

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.

Agent frameworks 5

Libraries developers build agents with.

Assistants fetching for a user 39

Fetched because a person asked an assistant.

Crawlers 126

Crawl the web for training, search or data.

Scraping services 13

Rented scraping, usually disguised.

Automation tools 6

Headless browsers and drivers.

HTTP libraries 11

Scripts with a default 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.