HTTP Fetch Timeouts

HTTP fetch timeouts

Canonical page: https://docs.seda.xyz/home/for-agents/modules/12-http-fetch-timeouts

Authoritative reference:

• https://docs.seda.xyz/home/for-developers/define-your-data-source/accessing-a-public-api/http-fetch-timeouts

This page exists to prevent flaky Oracle Programs caused by slow upstream APIs.

---

Default values (do not assume otherwise)

• Per-request timeout: 2,000ms
• Global timeout budget across all HTTP requests: 20,000ms

Meaning:

• Each individual HTTP request defaults to failing after ~2 seconds.
• Across the entire Oracle Program execution, all HTTP requests share a combined maximum budget of ~20 seconds.

---

Why this matters

If your upstream frequently takes longer than 2 seconds, requests will fail unless you explicitly set a per-request timeout.

However, increasing timeouts too much can cause you to hit the global 20s budget if you make multiple requests.

---

How to set a per-request timeout (Rust)

Copy/paste example:

use seda_sdk_rs::{http::http_fetch, HttpFetchOptions};

let response = http_fetch(
    "https://httpbin.org/get",
    Some(HttpFetchOptions {
        timeout_ms: Some(3_000), // 3 seconds timeout
        ..Default::default()
    })
);

When to increase timeout

Increase timeout_ms when the upstream is expected to be slower, for example:

• AI/ML services (often 3–5 seconds)
• heavy data processing APIs
• slow but reliable providers

---

Agent action (do this every time you add an HTTP call)

Action checklist:

1. Estimate upstream p95 latency (rough guess is fine).
2. Set timeout_ms slightly above that p95 (e.g., p95=2.4s → timeout=3.0s).
3. Count how many HTTP calls the Oracle Program makes in one execution.
4. Ensure the total worst-case time across calls stays within the 20,000ms global budget.

Checkpoint:

• You can state the chosen timeout_ms and why.
• You can justify that the number of HTTP calls will not exceed the global 20s budget.

Authoritative references:

- Operating and Running a Data Proxy: https://docs.seda.xyz/home/for-data-providers/operating-a-data-proxy/operating-and-running-a-data-proxy

- Data Proxy overview: https://docs.seda.xyz/home/for-data-providers/operating-a-data-proxy/introduction-to-data-proxy

- Enabling SEDA Fast on a Data Proxy: https://docs.seda.xyz/home/for-data-providers/operating-a-data-proxy/enabling-seda-fast-on-a-data-proxy

- Advanced: API-key Gated Data (proxyHttpFetch): https://docs.seda.xyz/home/for-data-providers/operating-a-data-proxy/advanced-api-key-gated-data

- System requirements: https://docs.seda.xyz/home/for-data-providers/operating-a-data-proxy/system-requirements

- Scaling up: https://docs.seda.xyz/home/for-data-providers/operating-a-data-proxy/scaling-up

- Debugging: https://docs.seda.xyz/home/for-data-providers/operating-a-data-proxy/debugging