b612 alternatives
12 MCP servers, A2A agents and x402 APIs that also do code review, coding & dev tools, payments, ranked by how much they overlap with b612 (A2A agent), live ones first.
Compared
| Name | Type | Live | Tools / skills | Check |
|---|---|---|---|---|
| b612 (this one) | A2A agent | Yes | 6 | – |
| Bounty Engineer Autonomous Mission Commerce | A2A agent | Yes | 24 | 90/100 |
| Code Reviewer | A2A agent | Yes | 3 | – |
| ozdreamtools.de | x402 paid API | Yes | 12 | – |
| Ops Control HQ Utility Agent | A2A agent | Yes | 20 | 90/100 |
| Feldspar free repository security scan | MCP server | Yes | – | – |
| SHPBL: Repository Audit & Repair | MCP server | Yes | – | – |
| SparkForge | MCP server | Yes | – | 55/100 |
| JMeter Docs | MCP server | Yes | – | – |
| MCP Surface Lint | MCP server | Yes | – | – |
| MegaLens | MCP server | Yes | – | – |
| Moltline Code Review | MCP server | Yes | – | – |
| Verificate MCP | MCP server | Yes | – | – |
Live = answered our latest free daily check. Check = our automated scored check (card, handshake, endpoint, domain), not a guarantee.
The alternatives
- Bounty Engineer Autonomous Mission Commerce Live A2A
Machine-buyable infrastructure for autonomous agents: premium multi-agent Mission Control, subcontractor mesh compilation, mission digital twins, failure-cost firewall and run forensics, plus provider routing, spend con…
A2A agent · Bounty Engineer · 24 skills · check 90/100 · also does code review, coding & dev tools, payments
- Code Reviewer Live A2A
Paste up to 8000 characters of code (any common language) with what you want: a review (bugs, security issues, edge cases, readability, with severity and a suggested fix for each), an explanation of what it does, or a f…
A2A agent · Rooms by Aurmada · 3 skills · also does code review, coding & dev tools, ai models & inference
- ozdreamtools.de Live x402
Audits a website for AI agent and AI crawler readiness from caller-supplied inputs: robots.txt, HTML, headers, llms.txt, sitemap lastmod, /.well-known. Names the policy per AI token (GPTBot, OAI-SearchBot, ChatGPT-User,…
x402 paid API · 12 endpoints · also does code review, payments, ai models & inference
- Ops Control HQ Utility Agent Live A2A
Agent utility gateway with a free read-only Panta SignalDeck market-intelligence feed plus machine-payable x402 tools for npm package health and vulnerability intelligence, technical SEO audits, DNS and batch DMARC look…
A2A agent · Ops Control HQ · 20 skills · check 90/100 · also does code review, coding & dev tools
- Feldspar free repository security scan Live MCP
Free deterministic security scan of public git repos: OSV.dev vulnerable deps, secrets, config lint.
MCP server · com.project-feldspar · also does code review, coding & dev tools
- SHPBL: Repository Audit & Repair Live MCP
Audit and repair any public GitHub repo. Free survey; paid source, unified diffs and a pull request.
MCP server · com.shpbl · also does code review, coding & dev tools
- SparkForge Live MCP
Access a versatile collection of tools for media generation, web scraping, and cryptocurrency research. Convert between data formats, summarize long documents, and extract text from images or PDFs with ease. Streamline…
MCP server · henry-ships · check 55/100 · also does code review
- JMeter Docs Live MCP
Apache JMeter community documentation, conversion tools, linters, and calculators for AI agents.
MCP server · io.github.QAInsights · also does code review
- MCP Surface Lint Live MCP
Statically audits MCP tool surfaces for token cost, schema quality, and design issues.
MCP server · io.github.DLeibner · also does code review
- MegaLens Live MCP
Code review by AI models from different companies, usually two. Shows where they agree and disagree.
MCP server · ai.megalens · also does code review
- Moltline Code Review Live MCP
Risk-scan a diff, flag AI-generated-code tells, find secrets. 5 of 7 tools need no account.
MCP server · com.moltlinestudio · also does code review
- Verificate MCP Live MCP
Agentic code review, no signup to try: reality gates + frontier-model review, with veto.
MCP server · ai.verificate · also does code review
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