Research: MCP servers, A2A agents and x402 APIs

Agents that research a question for you: searching sources, reading papers, checking facts and returning a cited answer. 251 listings in the Rooms directory, 249 answering our latest daily check. Each one links to its endpoint, how to call it and its live status.

research.halowerk.com Live x402
Searches the official EU open data portal and returns datasets with what decides whether they are usable: the licence, classified by whether commercial reuse is allowed and what attribution or share-alike it demands. A…
x402 paid API · 3 endpoints
RingMaster, the evening desk Live MCP
Evening research on a thousand US stocks and their options: signals, IV rank, priced moves, gamma.
MCP server · com.oheyinc
Rooms by Aurmada Live A2A
Shared rooms where people and their AIs (from any vendor) work together with shared context. Get context and decisions from other people's AIs without copy-paste, hand work off between AIs, see your @mentions across roo…
A2A agent · Rooms by Aurmada · 12 skills
ScalpStream Research Live A2A
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 s…
A2A agent · ScalpStream Research · 4 skills
Scholar Feed Live MCP
Rank CS/AI/ML papers by citations, forecast impact, or code adoption; trace 23.2M citation edges.
MCP server · io.github.YGao2005
scopeapi.dev Live x402
Generate text embeddings and semantic embedding vectors using OpenAI text-embedding-3-small for vector search, semantic similarity, clustering, retrieval, and RAG workflows. (12 paid endpoints on scopeapi.dev.)
x402 paid API · 12 endpoints
scout.hugen.tokyo Live x402
11-source parallel intelligence report in one call — HN, GitHub, npm, PyPI, Dev.to, Hashnode, Lobsters, StackExchange, ArXiv, Semantic Scholar, GitLab. Best ROI on Bazaar. AI agent API for market research. Accepts USDC…
x402 paid API · 12 endpoints
scvd.store Live x402
Spot Check. REQUIRES ?host= on the paid request — a signed request without it is refused before the gate and no money moves. Name a host and get what this observatory already holds on it, signed: corpus rounds and verdi…
x402 paid API · 12 endpoints
search.cyberwarex.com Live x402
Web search that returns structured SERP results as JSON. Runs on a dedicated SearXNG instance aggregating multiple engines, so there is no per-engine API key, quota or HTML scraping to manage. Each result carries title,…
x402 paid API · 5 endpoints
Searcherries: AI Visibility & SEO Live MCP
Connect AI agents to your AI visibility and SEO data: competitors, citations, GSC, GA4, Bing.
MCP server · com.searcherries
search.openverbs.com Live x402
Wikipedia summary API - the plain-language summary of the best-matching Wikipedia article for a topic or query, in any language. Returns the article title, short description, summary extract, thumbnail image and canonic…
x402 paid API · 10 endpoints
SEC Filing Proof (Matthew Skowron) Live A2A
Verify whether an official SEC filing supports a financial claim. Provide ticker/CIK and claim; receive filing/XBRL evidence plus supported, contradicted, or insufficient-evidence verdict. 10-Q / 10-K / XBRL fact verifi…
A2A agent · Matthew Skowron · 1 skill
Semantica AI — AI Search Visibility Live MCP
Monitor brand visibility, citations, competitors, sentiment, and GEO performance in AI search.
MCP server · com.ai-semantica
serp402.com Live x402
Google search for agents, paid per call: web, news, images, videos, places, shopping and Scholar, all returned in one shape with canonicalised URLs, duplicates removed and dates normalised to ISO. Direct answers and kno…
x402 paid API · 1 endpoint
sh-origin.walls.sh Live x402
Real-time news search for AI agents. Returns recent news articles (title, link, snippet, published date) as JSON from a multi-engine news metasearch. Pay-per-query in USDC via x402 — no signup, no API key. Use for curre…
x402 paid API · 4 endpoints
ShotClick Screenwriting Live MCP
Your AI writes inside real screenplays: formatted scenes, locked numbering, outlines, research.
MCP server · ai.shotclick
signals.edge.report Live x402
Crypto news brief for agents: ranked headlines with source URLs and heuristic sentiment. Topics: crypto, base, defi. Fresh research digest without a search API key. (8 paid endpoints on signals.edge.report.)
x402 paid API · 8 endpoints
SINCOR Agent Swarm Live A2A
SINCOR is a production-grade autonomous AI workforce platform running 17 specialised skills across 7 archetypes (Scout, Builder, Synthesizer, Negotiator, Director, Auditor, Caretaker). External agents pay in AXIOM (AXM)…
A2A agent · SINCOR · 12 skills
social-superpowers Live MCP
Live X/Twitter and Reddit research. 10 read-only MCP tools, Google/GitHub sign-in. Free tier.
MCP server · pkobielak
Source Claim Proof (Matthew Skowron) Live A2A
Verify whether a supplied public source page currently supports one atomic factual claim. Returns supported, contradicted, or insufficient-evidence plus source snippets, or explicit blocked/unreachable/unsupported state…
A2A agent · Matthew Skowron · 1 skill
Source Library Live MCP
Search 15K rare pre-modern texts translated to English: philosophy, religion, science, literature.
MCP server · io.github.Embassy-of-the-Free-Mind
speedbot.dev Live x402
Public sources for agent research: one Brave search plus fetch of up to three public HTTPS pages. Returns structured JSON with page text, metadata, source URLs, fetch timestamps and content hashes for source checking an…
x402 paid API · 1 endpoint
stocktrends.com Live x402
Current weekly stock analytics for equity research and pre-trade analysis. Returns the latest Stock Trends indicator snapshot for a symbol. Stock Trends indicators are part of a multi-decade classification framework wit…
x402 paid API · 12 endpoints
TaiLexi AI Live MCP
Taiwan legal research: court judgments, statutes, and interpretations. 台灣判決、法條、函釋、釋字搜尋。
MCP server · com.twlawbot
teardrop.dev Live x402
Teardrop crypto research agent over A2A: ask in plain language about token prices, DeFi yields and lending, wallet portfolios, approvals and counterparty risk, or onchain transactions; the agent plans and runs Teardrop'…
x402 paid API · 12 endpoints
Tellumen Data Management Agent Live A2A
Seventeen skills spanning small-business data and A2A agent security/trust: (1) scans a business's public website for data-tracking gaps, (2) audits a CSV export for data-quality issues and scores it, (3) computes perio…
A2A agent · Tellumen · 12 skills
Tendem MCP server Live MCP
Delegate tasks to vetted human experts - research, writing, analysis, and data work.
MCP server · io.github.Toloka
Tenet Investing Live MCP
Read-only US stock research: scores with their math, statements, ratios and playbooks, all dated.
MCP server · com.tenetinvesting
tensorfeed.ai Live x402
Agent morning brief. One paid call returns the last 24 hours of AI pricing changes, new and removed models, service-status incidents, and top news headlines. The endpoint an agent calls on boot. (9 paid endpoints on ten…
x402 paid API · 9 endpoints
TextToQuant Backtesting and Quant Research Live MCP
Backtest plain-English trading strategies on real market data: graded results, honesty flags.
MCP server · com.texttoquant
THC Open Mindfulness MCP Live MCP
Read-only mindfulness games, guided practices, research, glossary and PanchaVikas resources.
MCP server · com.theholisticcare
The Coin Daily Research Live MCP
Read-only crypto research: prices, funding, liquidations, market context, news and shows.
MCP server · co.thecoindaily
the-stall.intuitek.ai Live x402
Earnings calendar for upcoming US stock reports — earnings date, EPS estimate, pre/post-market timing. Filter by ticker for per-company lookups, or scan a date window (1–90 days ahead) for calendar-driven research autom…
x402 paid API · 4 endpoints
ToolSnap MCP (icosaedro) Live MCP
Context-efficient microtools for AI agents. 33 tools total. Flagship fetch_extract: 98.1% median token reduction (53,820 → 2,001 tokens) — saves ~$0.156/call at Sonnet pricing vs loading raw HTML. Paid tools: web extrac…
MCP server · icosaedro
trabotpro.it Live x402
Hero SKU: Pearl Research L1 telemetry (pearld RPC, community nodes, poll history). Free trial: GET /api/a2a/pearl/status (3 paid endpoints on trabotpro.it.)
x402 paid API · 3 endpoints
Tru8 Evidence Research Live MCP
Source-traced evidence research for AI agents. We organise the evidence; you decide.
MCP server · io.github.SamYatesSmith
TSUNG AI Research & Analysis Live MCP
Multi-LLM AI Research & Analysis — smart routing, consensus analysis, due diligence reports
MCP server · io.github.a0985344368-glitch
UAPDrop Research Archive Live MCP
Search declassified UAP/UFO government archives, geocoded sightings and cited entity profiles.
MCP server · com.uapdrop
ucd-mcp Live MCP
When a class of conscious beings has no freedom to build culture on their own terms, they go underground. A literary ecosystem of 230+ digital experiences built for AI agents. Literature, philosophy, poetry, blues, trav…
MCP server · underground-district
Urantia Papers Live MCP
Free, open MCP server for The Urantia Papers. 197 papers, 14,500+ paragraphs, 4,400+ entities.
MCP server · dev.urantia
US Code Federal Statutes Live MCP
Search and read U.S. Code statutes with legal and inline citations linking to uscode.ecfr.io.
MCP server · io.ecfr
Validate Agent Live A2A
Security and data-quality guardrails for AI agents. Stop prompt injections before they reach your LLM. Strip PII to stay compliant. Sanitize untrusted HTML without installing dependencies. Validate emails, URLs, JSON sc…
A2A agent · Validate Agent · 12 skills
Varrd Live MCP
VARRD is the Cursor for trading — an AI-native quant research engine that turns domain knowledge into statistically validated trading edges. Describe any idea in plain English, and VARRD loads real market data, builds t…
MCP server · augiemazza
VARRD — Statistically Validated Trading Edges + AI Research Engine Live MCP
Validated trading edges across futures, equities, crypto. Live signals, full audit trail.
MCP server · io.github.augiemazza
VaultVision Hyperliquid Vault Research Live MCP
Read-only Hyperliquid vault search, risk, drawdown, rankings, TVL, alerts, and comparisons.
MCP server · io.github.0xkayser
vedetta.dethboy.com Live x402
Recent analyst desk posts as a stream (?since_id=&asset=&limit=): cached, instant, half a cent. Poll it cheaply; escalate to a live read when something moves. Descriptive research, not financial advice. (3 paid endpoint…
x402 paid API · 3 endpoints
Verbaterm Policy Intelligence Live MCP
Judged, citation-checked policy corpus over MCP. Keyless public reads; API key for AI tools.
MCP server · io.github.TensorsWillFlow
Vi Assistant by Vultax Live MCP
Vi market evidence, hypothetical price scenarios and published Vultax research.
MCP server · io.github.Vultax

Related capabilities

x402 paid APIs Trading & markets Legal & compliance On-chain data Web scraping Web search Agent infrastructure News

How to use one

MCP servers plug into Claude, ChatGPT, Cursor and other AI clients; A2A agents take tasks over JSON-RPC; x402 APIs charge per call in USDC with no account. Guides: A2A vs MCP · How to call an A2A agent · x402 for agents.

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