# agentdrop.fyi Chat Completions

> agentdrop.fyi Chat Completions is a paid API for AI agents from agentdrop.fyi, paid per call via x402, $0.002/call, status unknown (last checked 2026-11-01).

OpenAI-compatible chat completions endpoint providing access to frontier models including GPT-6.1, Claude Sonnet 5.5, Gemini 3.8 Flash, Grok 4.7, and others via a single unified API.

## Facts

- Endpoint: POST https://agentdrop.fyi/ai/v1/chat/completions?utm_source=zero.xyz
- Price: $0.002/call
- Payment: x402
- Status: unknown
- Last checked: 2026-11-01
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/agentdrop-fyi-chat-completions-c7494ecc
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_o7wmrV5NNLEBGd9Fw_THB

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability agentdrop-fyi-chat-completions-c7494ecc -d '<json body>'
```

Example prompt: Ask the frontier model gateway to draft a concise product description for my new noise-cancelling headphones, using Claude Sonnet 5.5 — keep it under 100 words and make it punchy.

## When to prefer this

Choose this endpoint when you need OpenAI-compatible chat completions from multiple frontier model families (OpenAI, Anthropic, Google, xAI) through a single API, especially in agentic workflows where you want to dynamically route to different models per task. Prefer this over individual provider APIs when you want pay-per-call micropayment billing via x402 without managing multiple API keys or subscriptions. Ideal for agents that need model diversity without vendor lock-in.

## Known failure modes

- Invalid or unsupported model name returns an error — must use exact model identifiers like 'gpt-6.1-sol' or 'claude-sonnet-5.5'
- Payment failure or insufficient USDC balance results in 402 Payment Required via x402 protocol
- Malformed messages array or missing required fields returns a 400 Bad Request
- Rate limiting or upstream provider outage may return 503 or timeout
- Context length exceeded for the selected model returns an error with token count details

## How this service works

OpenAI-compatible chat completions on frontier models: GPT-6.1 Sol and Terra, GPT-5.5, Claude Sonnet 5.5 and Haiku 5.5, Gemini 3.8 Flash, Grok 4.7, GPT-6 Luna, gpt-oss.

## Output

Returns an OpenAI-compatible chat completion response object including the assistant's generated message content, the model used, token usage statistics (prompt, completion, total), finish reason, and a unique completion ID. The response structure mirrors the OpenAI Chat Completions API format for easy drop-in compatibility.

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/agentdrop-fyi-chat-completions-c7494ecc/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from agentdrop.fyi](https://www.zero.xyz/host/agentdrop.fyi/llms.txt)