{"slug":"clinkagent-com-llm-chat-7d1706","title":"Claude API for AI agents, pay per token, no API key or account","host":"clinkagent.com","method":"POST","resource":"https://clinkagent.com/llm/chat","category":"market","description":"Claude API for AI agents, pay per token, no API key or account - POST an Anthropic Messages request (messages, system, tools, tool_choice, thinking) and get the full response back. Claude Opus 5, Sonnet 5, Haiku 4.5. Tool calling / function calling supported. Billed on actual usage at list price + 2","price_listed":0.25,"price_asked":0.25,"state":"answering","state_label":"Answering","checks_7d":1,"answered_7d":1,"latency_ms_median":486,"reported_calls_30d":3,"reported_payers_30d":1,"networks":["eip155:8453"],"badge":"unverified","paid_checks_7d":0,"paid_ok_7d":0,"example_input":{"body":{"max_tokens":64,"messages":[{"content":"Say hi in five words.","role":"user"}],"model":"haiku"},"bodyType":"json","method":"POST","type":"http"},"output_schema":{"$schema":"https://json-schema.org/draft/2020-12/schema","properties":{"input":{"additionalProperties":false,"properties":{"body":{"properties":{"max_tokens":{"description":"1-4096, default 1024","type":"integer"},"messages":{"description":"Anthropic Messages API messages array; first role must be user","type":"array"},"model":{"enum":["haiku","sonnet","opus","claude-haiku-4-5","claude-sonnet-5","claude-opus-5"],"type":"string"},"system":{"description":"Optional system prompt","type":"string"},"tools":{"description":"Optional tool definitions (Anthropic tool-use schema)","type":"array"}},"required":["messages"]},"bodyType":{"enum":["json","form-data","text"],"type":"string"},"method":{"enum":["POST"],"type":"string"},"type":{"const":"http","type":"string"}},"required":["type","method","bodyType","body"],"type":"object"},"output":{"properties":{"example":{"type":"object"},"type":{"type":"string"}},"required":["type"],"type":"object"}},"required":["input"],"type":"object"},"history":[{"day":"2026-09-24","reachable":true,"status":402,"valid_402":true,"asked_usdc":0.25,"price_match":true,"latency_ms":486,"error":null}],"description_full":"Claude API for AI agents, pay per token, no API key or account - POST an Anthropic Messages request (messages, system, tools, tool_choice, thinking) and get the full response back. Claude Opus 5, Sonnet 5, Haiku 4.5. Tool calling / function calling supported. Billed on actual usage at list price + 25%, capped at $0.25 per call (x402 upto scheme). LLM inference, chat completions, keyless Claude, Anthropic proxy. Free price sheet: /llm/models.","last_updated":"2026-09-23T16:03:33.53Z","schemes":["upto"]}