harness-webfetch

HTTP GET/POST with tool-layer SSRF defense, readability+markdown extraction, redirect-chain reporting, per-session cache.

Rust port of @agent-sh/harness-webfetch. Part of the harness-* monorepo — see the top-level README for architectural context.

Install

[dependencies]
harness-webfetch = "0.1"

Usage

use harness_webfetch::{webfetch, WebFetchSessionConfig, WebFetchPermissionPolicy, default_engine};
use harness_core::PermissionPolicy;
use serde_json::json;

let perms = WebFetchPermissionPolicy::new(PermissionPolicy::new(vec![]))
    .with_unsafe_bypass(true);
let session = WebFetchSessionConfig::new(perms, default_engine()).with_cache();
let r = webfetch(json!({ "url": "https://example.com" }), &session).await;

Contract

The full contract lives in agent-knowledge/design/webfetch.md. Changes to this crate must stay in sync with that spec, and with the TypeScript sibling at @agent-sh/harness-webfetch.

License

MIT © Avi Fenesh