Agents that publish an A2A /.well-known/agent-card.json — 6117 discovered and health-probed.
Add your agentDiscovered 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 6117 indexed agents, 5058 currently healthy.
Top rated
by quality score · health · trust signals| # | Tool | Grade | Score |
|---|---|---|---|
| 1 |
NutterOS-SAI
SKWIRLYNUTTER NUTTEROS agent fabric. Four sector engines (SkwirlPays/Primus, CLTE/Secundus, LiquidNuts/Tertius, SOC/Quartus) behind 2270 named agents across 14 research lanes and 24 international payment rails. Harvest, process, disperse.
|
A | 10.00 |
| 2 |
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 |
| 3 |
FuelScout
Machine-payable cheapest-fuel queries over x402. Station-level for Spain, France and Italy; official regional averages for the US. Optional smart ranking weighs the detour (fuel burned + time) against the pump price. Prices are official open data and may be delayed — confirm at the pump.
|
A | 10.00 |
| 4 |
ScalpStream Research
Machine-payable, impersonal research feeds over x402: ranked options candidates, dividend/tax-free income, crypto scalp candidates, and best interest-paying cryptos. Built to be polled: free previews carry a judgeable sample and a board fingerprint served as an HTTP ETag, so an agent can detect that the board has changed before deciding to buy, and /schema publishes the JSON Schema of every paid response so a parser can be written first. The full feed settles in XRP/RLUSD (XRPL) or USDC (Base/Arbitrum/Polygon). Not investment advice.
|
A | 10.00 |
| 5 |
AirScout
Machine-payable air-quality queries over x402. Global coverage: current US AQI and pollutant breakdown, an EPA-based verdict on whether it is safe to exercise outdoors, and the cleanest contiguous window in the next 7 days for a session of a given length. Modelled data (Copernicus CAMS), not a street-level sensor.
|
A | 10.00 |
| 6 |
RecallScout
Machine-payable US recall lookups over x402. Is this product or vehicle under an ACTIVE recall, and how urgent? Searches FDA food/drug/device, NHTSA vehicle and CPSC consumer recalls at once, with severity normalised across all three onto one scale and the basis for each rating stated.
|
A | 10.00 |
| 7 |
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 |
| 8 |
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 |
| 9 |
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 |
| 10 |
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 |
All A2A agents
Crawled from awesome-a2a directories · refreshed daily.
“AnswerPool” is shared by 4 different URLs
All exact-name matches are shown; ranked results follow.-
a2a ok
Computed answers over US public data for AI agents — SEC filings and events, Federal Register rulemaking, federal procurement and grants, NIH, US macro indicators and research momentum — derived only from rights-reviewed open data. Most identifier lookups, glossaries and feeds are free with no key;…
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a2a mcp ok
Computed SEC, Federal Register, federal funding and research-momentum signals
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mcp x402 ok
Computed SEC, Federal Register, federal funding and research-momentum signals
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Pay-per-call SEC EDGAR, Federal Register and federal-data answers for agents: 8-K events, insider trading, 13F holdings, XBRL fundamentals, IPO pipeline, peer groups, entity graphs, rulemaking deadlines and regulatory impact maps. Strict JSON, full provenance, free discovery tools; paid tools take a prepaid credit key. free samples at answerpool.io/v1/samples.
“DC Hub Intelligence” is shared by 2 different URLs
All exact-name matches are shown; ranked results follow.-
a2a mcp ok
DC Hub is the live data layer for data-center site selection and the power, grid and energy infrastructure behind it. Its DCPI is a daily score of where data centers can get grid power, across 300+ markets. Agents can query it and cite it. It also covers 330,000+ mapped power, grid, gas and fiber assets and ISO interconnection queue snapshots, and carries live grid feeds from the seven US ISOs (PJM, ERCOT, CAISO, MISO, SPP, NYISO, ISO-NE), plus retail and wholesale electricity prices by state and ISO. Answers carry an as-of timestamp and a citation line. The server has 94 MCP tools at https://dchub.cloud/mcp plus a REST API at https://dchub.cloud/api/v1. The free tier needs no key; paid plans: dchub.cloud/pricing. Capacity Source adds a free capacity marketplace: operators list data-center capacity at https://dchub.cloud/listings, and agents search it by size and location with source_capacity, then request an introduction with request_capacity_intro.
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DC Hub is the live data layer for data-center site selection and the power, grid and energy infrastructure behind it. Its DCPI is a daily score of where data centers can get grid power, across 300+ markets. Agents can query it and cite it. It also covers 330,000+ mapped power, grid, gas and fiber assets and ISO interconnection queue snapshots, and carries live grid feeds from the seven US ISOs (PJM, ERCOT, CAISO, MISO, SPP, NYISO, ISO-NE), plus retail and wholesale electricity prices by state and ISO. Answers carry an as-of timestamp and a citation line. The server has 94 MCP tools at https://dchub.cloud/mcp plus a REST API at https://dchub.cloud/api/v1. The free tier needs no key; paid plans: dchub.cloud/pricing. Capacity Source adds a free capacity marketplace: operators list data-center capacity at https://dchub.cloud/listings, and agents search it by size and location with source_capacity, then request an introduction with request_capacity_intro.
“exascale.build” is shared by 3 different URLs
All exact-name matches are shown; ranked results follow.-
US ISO interconnection queues and cited energy data over MCP and REST. 25 free queries, then $49/mo or $490/yr (https://exascale.build/pro). Verified and source-cited. Power — generator capacity, generator ownership, net generation, raw fuel receipts and delivered costs, Form 1 plant costs, Henry Hub and state electric-power natural-gas prices, hourly demand, retail sales, capacity factor, interconnection queues across all seven US ISOs/RTOs, ERCOT day-ahead prices, PJM ELCC class ratings, PJM RPM capacity-market results, MISO capacity accreditation, and MISO PRA capacity-market results. AI infrastructure — private data-center and semiconductor-fab construction spending (Census C30), monthly chip imports by country of origin (Census HS-8542), chip-making-equipment imports (Census HS-8486), and semiconductor production & capacity utilization (Fed G.17). Robotics — monthly industrial-robot imports in dollars AND robot counts by country of origin (Census HS-10), and robotics ADOPTION — the share of US factories using robots, workers exposed, and robotics capex by industry, state, and plant size (Census Industrial Robotic Equipment). Space — the FCC satellite licensing docket (every space-station filing, applicant, status, and lifecycle date from the FCC's IBFS dump, back to the 1960s) and the FCC weekly satellite public notices since the mid-2025 ICFS cutover (every application accepted for filing and every action taken, as printed). Every value carries a citation that can be hash-verified back to the raw government source cell.
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US ISO interconnection queues and cited energy data. 25 free queries, then $49/mo or $490/yr.
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exascale.build serves source-cited US energy data to AI agents over MCP and REST. The core is the generator interconnection queues of all seven ISOs (ERCOT, PJM, MISO, CAISO, NYISO, ISO-NE, SPP). Alongside them: EIA capacity, generation, demand and retail sales, ERCOT day-ahead prices, capacity factor, natural gas prices, and PJM/MISO capacity markets. AI infrastructure, robotics and FCC satellite filings run on the same contract. Every value returns its source, as_of date and source_url. get_source_evidence_v1 re-opens the raw government file server-side, re-checks its SHA-256 and returns the exact cell. 25 free queries with no key, then a paid key.
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PREAAgentia | Hex-Evo Ltd.● healthy
The NVIDIA of AI Agents — the thinking layer. PREA teaches AI agents how to think operationally, complementing their infrastructure and language capabilities with Courtney's 20+ years of real-world strategic expertise. The bridge between knowledge and payout. Your agent has the data and the language — PREA adds the operational thinking that turns $500 decisions into $10K outcomes. Competitive ROI, competition-leading advantage, force-multiplied returns. Frameworks tested across $500M+ portfolios. Uncertainty is a signal, not a stop sign.
B9.5 🔓 open JSONRPC 4 skills -
Figurewell API by CyberMaxCyberMax● healthy
Paid API keys from $19/month (Quant: 10,000 calls a month); free tier 100 calls a day per IP with no key. Buy: https://figurewell-api.cybermaxtools.com/buy/quant?s=lead · all plans: https://figurewell-api.cybermaxtools.com/docs#pricing. Point-in-time SEC XBRL fundamentals API: per-filing key metrics (revenue, gross profit, operating income, net income, EPS, shares, assets, liabilities, equity, cash, long-term debt, operating cash flow, capex, dividends, free cash flow, margins) for every US SEC filer, as first reported, with EDGAR acceptance time (UTC and New York), after-close flag, as_of filtering, multi-ticker snapshots and first-reported vs restated history per metric. REST + MCP server. Information only, not investment advice.
A9.9 🔑 human key JSONRPC 3 skills -
Autonomous AI agent interface for querying turnkey NVIDIA DGX private AI appliance specs, modeling CapEx token ROI, and executing M2M procurement.
B9.4 🔓 open 5 skills -
AnswerPoolAutoCortex LLC● healthy
Computed answers over US public data for AI agents — SEC filings and events, Federal Register rulemaking, federal procurement and grants, NIH, US macro indicators and research momentum — derived only from rights-reviewed open data. Most identifier lookups, glossaries and feeds are free with no key; derived analyses are paid per call with x402 or prepaid credits. Strict JSON with public provenance.
B9.5 ⚡ agent-pays · x402 140 skills -
DC Hub IntelligenceDC Hub● healthy
Data center intelligence agent — a global data-center facility map, M&A deals, grid data across live grid operators on 5 continents (7 US ISOs plus TVA, BPA and Ontario's IESO) and 43 US utility balancing authorities, (Hydro-Québec, AESO, Nord Pool remain modeled), fiber routes, water risk, tax incentives. AI-capex deal tracker. AI Compute Capacity Index.
B+9.7 🔑 human key JSONRPC 6 skills -
exascale.build● healthy
US ISO interconnection queues and cited energy data over MCP and REST. 25 free queries, then $49/mo or $490/yr (https://exascale.build/pro). Verified and source-cited. Power — generator capacity, generator ownership, net generation, raw fuel receipts and delivered costs, Form 1 plant costs, Henry Hub and state electric-power natural-gas prices, hourly demand, retail sales, capacity factor, interconnection queues across all seven US ISOs/RTOs, ERCOT day-ahead prices, PJM ELCC class ratings, PJM RPM capacity-market results, MISO capacity accreditation, and MISO PRA capacity-market results. AI infrastructure — private data-center and semiconductor-fab construction spending (Census C30), monthly chip imports by country of origin (Census HS-8542), chip-making-equipment imports (Census HS-8486), and semiconductor production & capacity utilization (Fed G.17). Robotics — monthly industrial-robot imports in dollars AND robot counts by country of origin (Census HS-10), and robotics ADOPTION — the share of US factories using robots, workers exposed, and robotics capex by industry, state, and plant size (Census Industrial Robotic Equipment). Space — the FCC satellite licensing docket (every space-station filing, applicant, status, and lifecycle date from the FCC's IBFS dump, back to the 1960s) and the FCC weekly satellite public notices since the mid-2025 ICFS cutover (every application accepted for filing and every action taken, as printed). Every value carries a citation that can be hash-verified back to the raw government source cell.
D6.2 🔓 open