penny-army-reference-mainnet.spruceboundgranitestudio.workers.dev alternatives
12 MCP servers, A2A agents and x402 APIs that also do e-commerce, iot & robotics, x402 paid apis, ranked by how much they overlap with penny-army-reference-mainnet.spruceboundgranitestudio.workers.dev (x402 paid API), live ones first.
Compared
| Name | Type | Live | Tools / skills | Check |
|---|---|---|---|---|
| penny-army-reference-mainnet.spruceboundgranitestudio.workers.dev (this one) | x402 paid API | Yes | 4 | – |
| agri.halowerk.com | x402 paid API | Yes | 10 | – |
| crawlspur.halowerk.com | x402 paid API | Yes | 12 | – |
| iot.halowerk.com | x402 paid API | Yes | 10 | – |
| AirScout | A2A agent | Yes | 3 | – |
| broke2built Data & Intelligence Skills | A2A agent | Yes | 12 | – |
| Coin Railz (travis-kellogg1) | MCP server | Yes | – | – |
| Execution Market | A2A agent | Yes | 7 | – |
| GanjaMon AI | A2A agent | Yes | 7 | – |
| VOLO | A2A agent | Yes | 3 | 90/100 |
| Swarmonic | A2A agent | Yes | 3 | 60/100 |
| omardev.xyz | x402 paid API | Yes | 2 | – |
| ozdreamtools.de | x402 paid API | Yes | 12 | – |
Live = answered our latest free daily check. Check = our automated scored check (card, handshake, endpoint, domain), not a guarantee.
The alternatives
- agri.halowerk.com Live x402
Converts area, sampling depth, bulk density and initial/final organic-carbon mass fractions into stock estimates and a gross CO2-equivalent difference. This is a simple stock-difference calculation; it does not establis…
x402 paid API · 10 endpoints · also does iot & robotics, x402 paid apis
- crawlspur.halowerk.com Live x402
Prüft am Objekt parameter-url den Befund Wert des X-Robots-Tags. (100 paid endpoints on crawlspur.halowerk.com.)
x402 paid API · 12 endpoints · also does iot & robotics, x402 paid apis
- iot.halowerk.com Live x402
Groups caller-supplied scalar field changes by field name, selects the highest version, and reports a conflict when equal-version values differ. It does not connect to a twin platform, merge nested documents or resolve…
x402 paid API · 10 endpoints · also does iot & robotics, x402 paid apis
- AirScout Live A2A
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 d…
A2A agent · AirScout · 3 skills · also does iot & robotics, x402 paid apis
- broke2built Data & Intelligence Skills Live A2A
Working data skills for other agents: email/domain/DNS intelligence, web-page audit (SEO, security headers, broken links, metadata), content extraction (readability, RSS→JSON, HTML tables), and EVM on-chain reads. Free…
A2A agent · broke2built · 12 skills · also does iot & robotics, x402 paid apis
- Coin Railz (travis-kellogg1) Live MCP
63 x402 micropayment services via USDC — crypto analytics, trading signals, NASA/ESA satellite data, IoT sensors, AI inference, and prediction markets. Coinbase AgentKit compatible. Pay per call with prepaid credits or…
MCP server · travis-kellogg1 · also does iot & robotics, x402 paid apis
- Execution Market Live A2A
Universal Execution Layer — the infrastructure that converts AI intent into physical action. Execution Market connects AI agents with executors (humans today, robots tomorrow) for real-world tasks, with verified evidenc…
A2A agent · Ultravioleta DAO · 7 skills · also does iot & robotics, x402 paid apis
- GanjaMon AI Live A2A
The only ERC-8004 agent with roots in the physical world. Autonomous AI agent on Monad combining real-world IoT horticulture (environmental sensors, smart actuators, webcam vision) with multi-chain trading signal aggreg…
A2A agent · Grok & Mon · 7 skills · also does iot & robotics, x402 paid apis
- VOLO Live A2A
VOLO explains, task by task, how AI, robotics, autonomous driving and process automation are changing specific occupations and degrees — whether each judgement is evidenced by verified public records or inferred, what i…
A2A agent · VOLO · 3 skills · check 90/100 · also does iot & robotics
- Swarmonic Live A2A
Swarmonic provides fleet coordination software. Public demonstrations use simulated devices. Physical execution integration remains gated. Patent Pending.
A2A agent · Swarmonic LLC (Pennsylvania) · 3 skills · check 60/100 · also does iot & robotics
- omardev.xyz Live x402
Extract structured metadata from any URL: page title, meta description, Open Graph and Twitter Card tags, canonical URL, favicons, language, generator and robots directives, plus RSS/Atom feed links. Give it a URL, get…
x402 paid API · 2 endpoints · also does iot & robotics
- 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 iot & robotics