Locus x402 DeepSeek Chat API

Name: Locus x402 DeepSeek Chat API
Price: 0.001 USD

x402

Locus x402 DeepSeek Chat API is a paid API for AI agents from deepseek.x402.stage.paywithlocus.com, paid per call via x402, $0.001/call, status unknown (last checked 2026-09-14).

Pay-per-use DeepSeek LLM chat completions endpoint billed via x402 micropayments at $0.001 USDC per call

Price / call$0.001

Seller volume →—

Success—

StatusUnknown

How this service works

Locus public pay-per-use API

Output

Returns a chat completion response containing the assistant's generated message text, produced by the selected DeepSeek model (deepseek-v4-flash or deepseek-v4-pro), bounded by the specified max_tokens limit. The response follows standard OpenAI-compatible chat completion format.

Example use cases

On-demand LLM for autonomous agent

“Call the Locus x402 DeepSeek API using deepseek-v4-pro with a system prompt saying 'You are a helpful legal research assistant' and ask it to summarize the key points of contract law in under 500 tokens — pay per use so I don't need a subscription.”

Code generation with metered billing

“Using the DeepSeek x402 pay-per-use chat endpoint, ask the deepseek-v4-flash model to write a Python function that parses a CSV file and returns a list of dictionaries — set max_tokens to 400 and temperature to 0.3 for more deterministic output.”

Multi-turn conversation for customer support bot

“Send a conversation history to the Locus x402 DeepSeek chat API — use deepseek-v4-flash, include the system message 'You are a friendly customer support agent for an e-commerce store', and a user asking about their refund status, keeping the reply under 200 tokens.”

Technical details

Endpoint

POSThttps://deepseek.x402.stage.paywithlocus.com/deepseek/chat

When to prefer

Choose this endpoint when you need DeepSeek LLM chat completions on a true pay-per-use basis via x402 micropayments in USDC, especially for agent workflows where subscription billing is impractical. Prefer deepseek-v4-flash for cost-sensitive, high-throughput tasks and deepseek-v4-pro for higher-quality outputs. Best suited for agents that need to make occasional or unpredictable numbers of LLM calls without committing to a monthly plan.

Side effects

Payment failure — insufficient USDC balance or x402 authorization rejected, resulting in 402 Payment Required
Invalid model name — if a model other than deepseek-v4-flash or deepseek-v4-pro is specified, request will fail
Missing max_tokens — this field is required to bound metered authorization; omitting it will cause rejection
Streaming requested — streaming is not supported; setting stream:true will result in an error
Token limit exceeded — requesting more than 384000 max_tokens will be rejected
Malformed messages array — incorrect role values or missing content fields will cause validation errors

Input

Schema · Request body

Field	Type	Description
stop	string
model	string
top_p	number
stream	boolean
messages	array
max_tokens	number
temperature	number

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