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Linkrra Synap: gpt-oss-20b Chat Completions
x402
Linkrra Synap: gpt-oss-20b Chat Completions is a paid API for AI agents from pool.linkrra.com, paid per call via x402, $0.001/call, status unknown (last checked 2026-10-29).
Serves OpenAI-compatible chat completions for the gpt-oss-20b 20B-parameter model (native MXFP4) with 32K context, billed per-call in USDC on Base via x402 — no API key required.
Price / call$0.001
Success—
StatusUnknown
How this service works
Linkrra Synap: OpenAI gpt-oss-20b (model "gpt-oss-20b") - fast + cheap general model. OpenAI-compatible chat completions for this one model, 32K context, served only on dedicated GPUs we operate, native 4-bit MXFP4. Pay per call in USDC on Base via x402 - no account, no API key. From $0.001 per call, usage-priced per token above that (GET /v1/models). Streaming supported. Product site: https://synap.linkrra.com
Output
Returns an OpenAI-format chat completion object containing the assistant's generated message, finish reason, and token usage counts. When streaming is enabled, returns OpenAI-compatible Server-Sent Events (SSE) chunks delivered incrementally. The model used is always gpt-oss-20b with up to 32K context and a configurable max_tokens cap (default 4096).
Example use cases
Keyless LLM call for agentic pipeline
“I need to call a fast, cheap LLM from inside my agent workflow without setting up an account — use Linkrra Synap's gpt-oss-20b to generate a one-paragraph product description for 'EcoBottle Pro', a reusable insulated water bottle.”
Streamed code generation on a budget
“Stream a response from the gpt-oss-20b model: write a JavaScript async function that fetches paginated results from a REST API and collects all pages into a single array.”
Crypto-native AI for on-chain app
“My app pays for API calls in USDC on Base — send a chat completion request to Linkrra Synap's gpt-oss-20b asking it to summarize the following user support ticket in two sentences: 'I placed an order three days ago and still haven't received a shipping confirmation, and the customer service chat bot isn't helping.'”
Technical details
Endpoint
POSThttps://pool.linkrra.com/api/billing/x402/models/gpt-oss-20b/chat/completions?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a fast, low-cost general-purpose LLM inference call with no account or API key setup, and your system supports x402 payment in USDC on Base. It is ideal for agentic pipelines that need pay-per-call billing, crypto-native apps, or prototyping scenarios where you want OpenAI-compatible chat completions without a subscription. Prefer it over heavier models (30B+) when latency and cost matter more than maximum capability.
Side effects
- Insufficient USDC balance or failed x402 payment — request rejected before inference begins
- max_tokens exceeds 4096 — validation error returned
- messages array is empty or malformed — 422 validation error
- Model overload or GPU unavailability — 503 or timeout
- Streaming connection dropped mid-response — partial SSE output with no finish_reason
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| model | string | Optional: this endpoint always runs gpt-oss-20b. |
| stream | boolean | true = stream OpenAI-format Server-Sent Events. |
| messages | array | OpenAI-format chat history, oldest first: [{role, content}]. |
| max_tokens | integer | Completion token cap. The price is quoted for the prompt plus this cap. |
Tags
x402
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