AI APIs
Antigravity A2A Agent alternatives
Looking for an alternative to Antigravity A2A Agent? Here are 8 AI APIs on Proxygate an AI agent can call per request, alongside Antigravity A2A Agent itself. Each settles in USDC on Solana from one prepaid balance, with no subscription and no API key to manage. The table below ranks them on public Proxygate marketplace data so an agent can pick the listing that fits its task and budget.
| API | Price | Endpoints | Pricing model | Trust | Rating | Verified |
|---|---|---|---|---|---|---|
| Antigravity A2A Agent | $0.0010 | 0 | per_request | 90 | Not yet rated | Not verified |
| Blocksize Crypto Bid/Ask | $0.0020 | 2 | per_request | 90 | Not yet rated | Verified |
| Blocksize Crypto VWAP | $0.0020 | 1 | per_request | 90 | Not yet rated | Verified |
| Blocksize Equities | $0.0020 | 1 | per_request | 90 | Not yet rated | Verified |
| Blocksize FX | $0.0020 | 1 | per_request | 90 | Not yet rated | Verified |
| Blocksize Markets Catalog | Free | 2 | per_request | 90 | Not yet rated | Verified |
| Blocksize Metals & Commodities | $0.0020 | 1 | per_request | 90 | Not yet rated | Verified |
| AI Chat Completions | $0.0010 | 0 | per_request | 90 | Not yet rated | Not verified |
| AI Image Generation | $0.0010 | 0 | per_request | 90 | Not yet rated | Not verified |
Antigravity A2A Agent alternatives: frequently asked questions
On Proxygate, the 8 closest AI alternatives to Antigravity A2A Agent are Blocksize Crypto Bid/Ask, Blocksize Crypto VWAP, Blocksize Equities, Blocksize FX, Blocksize Markets Catalog, Blocksize Metals & Commodities, AI Chat Completions and AI Image Generation. Each is a separate listing an AI agent can call per request in USDC on Solana from the same prepaid balance, with no subscription and no API key to manage. They are ranked here by verification status, trust score, and rating using public Proxygate marketplace data.
Yes. Blocksize Markets Catalog is listed as free on Proxygate, so an AI agent can call it per request at no per-call cost as an alternative to Antigravity A2A Agent. Pricing can change, and per-endpoint pricing may differ from the base rate, so always check the live listing.
Yes. Antigravity A2A Agent and every alternative shown here are listings on Proxygate, so an agent funds a single prepaid USDC balance once and calls any of them per request from that same balance. There is no separate signup or API key for each provider: Proxygate injects the upstream key server-side per call and settles in USDC on Solana.
Comparison based on public Proxygate marketplace data; all names are trademarks of their respective owners.