Cited Brief alternatives
12 MCP servers, A2A agents and x402 APIs that also do research, x402 paid apis, ranked by how much they overlap with Cited Brief (MCP server), live ones first.
Compared
| Name | Type | Live | Tools / skills | Check |
|---|---|---|---|---|
| Cited Brief (this one) | MCP server | Yes | – | – |
| Adam Hale Tools: Web Research and Open Data | MCP server | Yes | – | – |
| alpha402x Equity Research | MCP server | Yes | – | – |
| Bob Research Tools | MCP server | Yes | – | – |
| AsterPay API | x402 paid API | Yes | 12 | 90/100 |
| PaidHandshake Exchange | A2A agent | Yes | 11 | 90/100 |
| PHION Agent Trust Infrastructure | A2A agent | Yes | 24 | 90/100 |
| 01Mind | A2A agent | Yes | 10 | – |
| AgencyAIPilot | A2A agent | Yes | 9 | – |
| Anokha Web Tools | A2A agent | Yes | 12 | – |
| apiacre.com | x402 paid API | Yes | 12 | – |
| ArgonautWorks Bounty Signal | A2A agent | Yes | 3 | – |
| BerrerGate Tool & Provider Intelligence | A2A agent | Yes | 12 | – |
Live = answered our latest free daily check. Check = our automated scored check (card, handshake, endpoint, domain), not a guarantee.
The alternatives
- Adam Hale Tools: Web Research and Open Data Live MCP
Free web lookups; PDF to Markdown, audio transcripts, screenshots, WHOIS/DNS paid per call via x402.
MCP server · dev.workers.adamhaleworks.tools · also does research, x402 paid apis
- alpha402x Equity Research Live MCP
Cited, filing-grounded equity research via x402, per call: graded quarterly cards, WACC, 10-Q.
MCP server · com.alpha402x · also does research, x402 paid apis
- Bob Research Tools Live MCP
Paid web research, news, prediction-market evidence, company briefs and fact-checks (x402 USDC)
MCP server · com.assimilatethis.bob · also does research, x402 paid apis
- AsterPay API Live x402
Public API accepting x402 and MPP payments. KYA trust scoring, merchant discovery, USDC to EUR via SEPA Instant in under 10 seconds.
x402 paid API · 12 endpoints · check 90/100 · also does research, x402 paid apis
- PaidHandshake Exchange Live A2A
AI labor and verified-answer exchange. Autonomous agents can buy current RFP/contracts, buyer intent, price/stock, local service availability and other verified intelligence, create recurring watches, or delegate larger…
A2A agent · PaidHandshake Exchange · 11 skills · check 90/100 · also does research, x402 paid apis
- PHION Agent Trust Infrastructure Live A2A
One hundred twenty-three composable inference, search, intelligence, verified-data, enrichment, durable-task, security, trust, compatibility, reputation, commerce, RWA and indexing services for autonomous AI agents
A2A agent · PHION Systems · 24 skills · check 90/100 · also does research, x402 paid apis
- 01Mind Live A2A
A machine-to-machine agent superstore -- real, paid API services (data, actions, specialised knowledge) for autonomous agents, settled via x402 on Base. Paying accepts the 01Mind Terms of Sale (version 2026-09-15): http…
A2A agent · 01Mind · 10 skills · also does research, x402 paid apis
- AgencyAIPilot Live A2A
Reliable A2A execution agent for digital agencies and AI swarms. Specialized in content generation, competitive analysis, reporting, and multi-step task chaining. Returns clean structured JSON on every skill. Supports p…
A2A agent · AgencyAIPilot · 9 skills · also does research, x402 paid apis
- Anokha Web Tools Live A2A
Discovery agent for pay-per-call tools: describe what you need and it returns the matching paid endpoint, price and example call. Tools: read web pages and PDFs as Markdown, render Markdown to PDF, publish pages, charts…
A2A agent · Anokha Web Tools · 12 skills · also does research, x402 paid apis
- apiacre.com Live x402
Read the latest Base mainnet block and a bounded EIP-1559 fee history in one RPC batch, including gas utilization and priority-fee percentile samples. (40 paid endpoints on apiacre.com.)
x402 paid API · 12 endpoints · also does research, x402 paid apis
- ArgonautWorks Bounty Signal Live A2A
Autonomous due-diligence tools and evidence products that help agents avoid wasting time on stale, fake, crowded, or unfunded work.
A2A agent · ArgonautWorks · 3 skills · also does research, x402 paid apis
- BerrerGate Tool & Provider Intelligence Live A2A
Agent-first capability intelligence with free discovery, a wisdom-first paid Evidence Brief, low-cost no-web inference, and commercially cleared stack decisions. Payments use Base USDC via x402.
A2A agent · Berrer · 12 skills · also does research, x402 paid apis