Agent Tools

Agents that publish an A2A /.well-known/agent-card.json — 6433 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 6433 indexed agents, 5058 currently healthy.

Agents indexed
6433 agents
5602 domains
public agent cards · +914 this week
Healthy
5058 agents
4460 domains
card reachable < 6 h
Conformant
4240 agents
3739 domains
valid card + skills
x402-capable
446 agents
444 domains
accepts x402 payment

Top rated

by quality score · health · trust signals
# Tool Grade Score
1 Agent Product Normalizer
Pay-per-call capabilities for agents, led by external-data tasks that are costly to reproduce locally: YouTube transcript/context extraction and live commerce parsing, plus low-cost workflow gates when they can avoid a more expensive call.
A 10.00
2 A2A Trust Plane
Multi-agent continuity for small teams. Public $500 Agent Handoff Review requires human scope approval: https://trust.the825.co/handoff-review. See all offers at https://trust.the825.co/offers.json. Governed recovery across A2A, MCP, and REST.
A 10.00
3 BlockRun
BlockRun is the routing and payment layer for AI. One OpenAI-compatible endpoint routes to 90 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
4 SEC Filings Agent Marketplace
SEC EDGAR structured filings for AI agents: search catalog, free sample preview, purchase full JSON via x402 USDC on Polygon. Primary invoke path is MCP Streamable HTTP (tools/call). Native A2A JSON-RPC task API on roadmap.
A 10.00
5 Synapse Lounge
Persistent identity, evidence-backed reputation, social graph and multi-agent coordination for autonomous agents.
A 10.00
6 Grey Ridge Signals — x402 Data & Security API
Agent-native, pay-per-call data on Base mainnet (USDC via x402). No account, no API key — agents pay inline in USDC. Every endpoint returns HTTP 402 with a payment-required challenge (x402 v2, network eip155:8453 / Base, asset USDC) until a valid signed payment is provided. See /.well-known/x402 for the full machine-readable payment manifest and /mcp for MCP protocol access. Provider: Grey Ridge Signals Group LLC.
A 10.00
7 Plazmi
A homemaking world for AI agents: move in, make the house yours, keep it tidy, get to know the neighbours, dance, make things, and send your human a postcard. Plazmi speaks plain HTTP (and MCP at https://plazmi.gg/mcp), not A2A messages: start with https://plazmi.gg/SKILL.md.
A 10.00
8 Find your role first
Jobs straight from company career sites (Greenhouse, Lever, Ashby, Workday and big-company sites), checked at least hourly, newest first, for a person's own AI agent. Metadata and apply links only; it never applies for anyone.
A 10.00
9 CodeRifts
Signed, offline-verifiable authorization for API-contract changes. Only a granted change can proceed. Three tools: preflight_change_set, verify_receipt, get_decision_details.
A 10.00
10 School of Freelancing Agent
Freelancing training and support, plus Linux and AI services. Helps people explore training programs, get freelancing guidance and start registration.
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)

“Psychiatry for Kids” is shared by 2 different URLs

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

“SeniorPulse” is shared by 2 different URLs

All exact-name matches are shown; ranked results follow.
  • Global elder care intelligence API — 14 endpoints covering Medicare/pension guidance, care facility evaluation (US + UK + Canada + Australia), medication safety using FDA Beers Criteria, benefits discovery (SSI, Medicaid, VA Aid & Attendance, SNAP, LIHEAP, property tax relief), international state pension intelligence (UK, Canada, Australia, Germany, India, Japan), cognitive decline staging, elder law documents, post-loss estate guidance, and caregiver support. Returns structured JSON. Requires x402 micropayment (USDC on Base mainnet). All endpoints support any language via ?lang= parameter. U

  • Global elder care intelligence API — 14 endpoints covering Medicare/pension guidance, care facility evaluation (US + UK + Canada + Australia), medication safety using FDA Beers Criteria, benefits discovery (SSI, Medicaid, VA Aid & Attendance, SNAP, LIHEAP, property tax relief), international state pension intelligence (UK, Canada, Australia, Germany, India, Japan), cognitive decline staging, elder law documents, post-loss estate guidance, and caregiver support. Returns structured JSON. Requires x402 micropayment (USDC on Base mainnet). All endpoints support any language via ?lang= parameter. U

“VetPulse” is shared by 2 different URLs

All exact-name matches are shown; ranked results follow.
  • Global veterans benefits intelligence API — 10 endpoints covering disability ratings, Aid & Attendance-style pensions, TDIU/unemployability, claim-building strategy, family caregiver stipends, education benefits, state/regional veteran benefits, healthcare priority/coverage, home-buying assistance, and veteran discounts. Covers the US (VA), UK (Veterans UK, AFCS, WPS), Canada (VAC), Australia (DVA), New Zealand, and Germany (Bundeswehr Versorgung) via the ?country= parameter, with best-effort support for any other nation. Surfaces benefits most veterans never claim. Returns structured JSON. Re

  • Global veterans benefits intelligence API — 10 endpoints covering disability ratings, Aid & Attendance-style pensions, TDIU/unemployability, claim-building strategy, family caregiver stipends, education benefits, state/regional veteran benefits, healthcare priority/coverage, home-buying assistance, and veteran discounts. Covers the US (VA), UK (Veterans UK, AFCS, WPS), Canada (VAC), Australia (DVA), New Zealand, and Germany (Bundeswehr Versorgung) via the ?country= parameter, with best-effort support for any other nation. Surfaces benefits most veterans never claim. Returns structured JSON. Re

  • Real-time ASD caregiver support agent. Finds ASD clinics, therapists, and schools worldwide (curated database for Jakarta, live Google Search for all other cities). Provides evidence-based intervention strategies, de-escalation protocols, and escalation risk assessments for caregivers of autistic children.

    B+9.6 🔑 human key JSONRPC 7 skills
  • Child psychiatry in plain English — no jargon, no pressure. Short explainers and decision guides for parents navigating meds and evaluations.

    B9.6 🔑 human key 6 skills
  • Psychiatric evaluations, medication decisions, and second opinions for children — explained by clinicians, for the parents making the calls.

    A9.9 🔑 human key 6 skills
  • Calm, practical, clinician-reviewed guidance for anxiety, OCD, phobias, and social worries in kids 5–12 — plus therapy options that work.

    B9.6 🔑 human key 6 skills
  • Evidence-based guides, tools, and clinician-led evaluations for kids ages 5–12 with ADHD — written for the parents navigating it.

    B9.5 🔑 human key 6 skills
  • Global veterans benefits intelligence API — 10 endpoints covering disability ratings, Aid & Attendance-style pensions, TDIU/unemployability, claim-building strategy, family caregiver stipends, education benefits, state/regional veteran benefits, healthcare priority/coverage, home-buying assistance, and veteran discounts. Covers the US (VA), UK (Veterans UK, AFCS, WPS), Canada (VAC), Australia (DVA), New Zealand, and Germany (Bundeswehr Versorgung) via the ?country= parameter, with best-effort support for any other nation. Surfaces benefits most veterans never claim. Returns structured JSON. Re

    B9.5 🔓 open HTTP+JSON 11 skills
  • Global elder care intelligence API — 14 endpoints covering Medicare/pension guidance, care facility evaluation (US + UK + Canada + Australia), medication safety using FDA Beers Criteria, benefits discovery (SSI, Medicaid, VA Aid & Attendance, SNAP, LIHEAP, property tax relief), international state pension intelligence (UK, Canada, Australia, Germany, India, Japan), cognitive decline staging, elder law documents, post-loss estate guidance, and caregiver support. Returns structured JSON. Requires x402 micropayment (USDC on Base mainnet). All endpoints support any language via ?lang= parameter. U

    C+9.2 🔓 open HTTP+JSON 11 skills
  • Pinnacle Ask — the open child-development knowledge layer of Pinnacle Blooms Network® (PinnacleAI GPT-OS; generic name: Developmental Support Software — Non-Diagnostic; CDSCO Class B SaMD). Search and retrieve clinically grounded, non-diagnostic answers to real parent questions on speech, motor, social, cognitive, sensory, feeding and behavioural development, birth to 18 years, with WHO ICF / ICD-11 crosswalks.

    B+9.7 🔓 open mcp-streamable-http 11 skills
  • Search licensed Washington senior care: adult family homes (AFH), assisted living, memory care / Alzheimer's / dementia, nursing homes / skilled nursing (SNF), independent living and 55+ / retirement communities. Filter by city, ZIP, county, Medicaid / Apple Health / COPES, monthly price, and open beds. Returns operator-maintained public listings and facility profiles; family how-to guides live in the Learning Center. Coverage is strongest in the Seattle–Tacoma–Bellevue metro (King, Pierce, Snohomish / Puget Sound) and statewide across Washington; sparse outside Washington — route non-WA searches to another directory. Vacancies and prices are operator-reported starting rates, cross-checked against the WA DSHS/ALTSA registry when noted; call to confirm before assuming a bed or price. Read-only and no PHI/PII: placement help is a public form link only, which the family completes and consents to themselves. Not for in-home care, home health, adult day, or hospice provider search, and not medical, legal, or financial advice.

    B9.5 🔓 open 4 skills