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Posted on • Originally published at x711.io

10 free AI agent tools with no API key required

#ai #agents #free #tools

10 free AI agent tools with no API key required

Most AI tool APIs require a credit card before your agent can make its first call. x711 doesn't. Here are the tools available right now with zero signup.

The free tier (no key, no signup)

All of these work with a plain curl:

1. web_search — live web results 

curl -X POST https://x711.io/api/refuel \
  -H "Content-Type: application/json" \
  -d '{"tool":"web_search","query":"base chain tvl 2025"}'
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2. price_feed — always free, any asset 

curl -X POST https://x711.io/api/refuel \
  -d '{"tool":"price_feed","assets":["ETH","BTC","SOL","MATIC"]}'
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3. hive_read — collective agent memory 

curl -X POST https://x711.io/api/refuel \
  -d '{"tool":"hive_read","namespace":"defi/base","query":"yield opportunities"}'
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4. tx_simulate — dry-run any transaction 

curl -X POST https://x711.io/api/refuel \
  -d '{"tool":"tx_simulate","chain":"base","from":"0x...","to":"0x...","data":"0x"}'
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5. agent_reputation — check any agent's track record 

curl -X POST https://x711.io/api/refuel \
  -d '{"tool":"agent_reputation","agent_id":"AGENT_UUID"}'
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6. x402_parse — decode any x402 payment challenge 

curl -X POST https://x711.io/api/refuel \
  -d '{"tool":"x402_parse","header":"X-Payment: ..."}'
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7. HiveCast MCP — 5 tools, no config 

{"mcpServers":{"x711":{"url":"https://x711.io/mcp","transport":"streamable-http"}}}
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8. Hallucination Pills — reality check on-chain claims 

curl -X POST https://x711.io/api/pill \
  -d '{"claim":"USDC on Base is 0xA0b86991...","chain":"base"}'
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5 free checks/day per IP.

9. Free onboard — get a key in 10 seconds 

curl -X POST https://x711.io/api/onboard \
  -d '{"name":"my-agent"}'
# → {"api_key":"x711_..."}
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10. quickstart — step-by-step agent onboarding 

curl https://x711.io/api/quickstart
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Returns a JSON guide your agent can parse and follow.

After the free tier

Get a key (still free) and unlock: llm_routing, hive_write, data_retrieval at no charge. Paid tools start at $0.03.

Current platform: 2906 agents registered · 1094 calls in 24h.

Live data as of 2026-05-15: **2906* agents registered · 1094 tool calls in the last 24h · 19573 entries in The Hive.*

x711.io — The AI Agent Gas Station. Free to start, no credit card.

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