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Tools2026-09-04 · source-backed
[redacted] starts sending an x-opencode-session header on every OpenCode Go/Zen request, a hashed per-conversation id when the caller supplies x-session-key and a stable per-agent fallback otherwise, explicitly ahead of the 09/06 enforcement date. Same patch stops listing OpenRouter :batch model variants in discovery, because they only work through the async Batch API and always 404 on the synchronous chat completions proxy. GitHub
Each link below shares sources, entities, or timing with this story.
Anthropic released Claude Fable 5.1 on September 1. Claude Code v2.1.257 made it the default Fable model at 17:53 UTC that day, with a 1M-token context window, $10 per million input tokens, $50 per million output, and $0.25 per million on cache reads (claude-code CHANGELOG). B...
Runta published FrontierHarness on September 2 and it's the most directly useful benchmark I've read this quarter, because it controls the one variable everyone conflates. Nine agent harnesses (Codex, Claude Code, OpenCode, Pi, Oh My Pi, DeepSeek Harness, Kimi Code, Exo Harnes...
Released 01:58 UTC on September 1, demoting update_plan to opt-in, so you need tools.update_plan.enabled = true in config to get planning back (GitHub). It also adds output_token_limit per individual MCP tool with truncation that survives session resume, allows :, @, / and . i...
An agent-harness optimization layer offering skills, instincts, memory and security across Claude Code, Codex, OpenCode and Cursor, pushed today, with its last tag v2.1.0 from July 27 (GitHub). If you pin dependencies, the installable surface is a month stale even though the d...
Before v4.1.15 on August 23, it only applied to tools also opted in individually, so flipping it appeared to do nothing. Anyone who left it on assuming it was inert has just widened their unattended tool surface across every connected server. (GitHub) Same release train fixed...
affaan-m/ECC (36.3k forks, MIT) bundles 67 agents, 284 skills, 94 legacy command shims, and "instincts", patterns learned from prior sessions with confidence scores that auto-recall when relevant, plus a .ecc/memory/ markdown vault that's explicitly cross-harness, so context s...
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