{"schema_version":"onlylabs.public_signal.v1","title":"Anthropic Writing: Effective Harnesses For Long Running Agents","description":"Anthropic writing signal with public source context, captured evidence pages, related signals, and data-business radar classification.","url":"https://onlylabs.fyi/signals/b2e9042c-dce4-4e29-b7a5-a59fea3f8760","json_url":"https://onlylabs.fyi/signals/b2e9042c-dce4-4e29-b7a5-a59fea3f8760/signal.json","generated_at":"2026-06-11T04:15:19.450708+00:00","org":{"slug":"anthropic","name":"Anthropic","category":"frontier-lab","category_label":"Frontier lab","dossier_url":"https://onlylabs.fyi/labs/anthropic","dossier_json_url":"https://onlylabs.fyi/labs/anthropic/dossier.json"},"related_urls":{"signal":"https://onlylabs.fyi/signals/b2e9042c-dce4-4e29-b7a5-a59fea3f8760","signal_json":"https://onlylabs.fyi/signals/b2e9042c-dce4-4e29-b7a5-a59fea3f8760/signal.json","source":"https://www.anthropic.com/engineering/effective-harnesses-for-long-running-agents","lab_dossier":"https://onlylabs.fyi/labs/anthropic","lab_dossier_json":"https://onlylabs.fyi/labs/anthropic/dossier.json","analysis":"https://onlylabs.fyi/analysis/anthropic","analysis_json":"https://onlylabs.fyi/analysis/anthropic/analysis.json","analysis_evidence_json":"https://onlylabs.fyi/analysis/anthropic/evidence.json","category":"https://onlylabs.fyi/frontier","category_json":"https://onlylabs.fyi/frontier.json","category_feed":"https://onlylabs.fyi/frontier/feed.xml","category_signals_json":"https://onlylabs.fyi/signals.json","topic":"https://onlylabs.fyi/topics/talking","topic_signals_json":"https://onlylabs.fyi/topics/talking/signals.json","topic_feed":"https://onlylabs.fyi/topics/talking/feed.xml","data_business":null},"answer_pack":{"answer":"Anthropic published Effective Harnesses For Long Running Agents. This talking signal gives public context for research themes, product direction, policy, or launch framing. High-signal details: Effective harnesses for long-running agents \\ Anthropic Engineering at Anthropic Effective harnesses for long-running agents Published Nov 26, 2025 Agents still face.... onlylabs links this event to 1 captured evidence page and 6 related writing signals.","signal_desk":"talking","source_context":{"source_url":"https://www.anthropic.com/engineering/effective-harnesses-for-long-running-agents","source_host":"anthropic.com","occurred_at":"2025-11-26T18:07:21+00:00","first_seen_at":"2026-06-09T02:17:26.339488+00:00","date_source":"sitemap.lastmod","context":null},"context_markers":[{"label":"Lab","value":"Anthropic","source":"signal"},{"label":"Signal desk","value":"talking","source":"signal"},{"label":"Source host","value":"anthropic.com","source":"source"},{"label":"Watch term","value":"Agents and tool 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This talking signal gives public context for research themes, product direction, policy, or launch framing. 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We developed a two-fold solution to enable the Claude Agent SDK to work effectively across many context windows: an initializer agent that..."},"evidence_pages":[{"url":"https://www.anthropic.com/engineering/effective-harnesses-for-long-running-agents","final_url":"https://www.anthropic.com/engineering/effective-harnesses-for-long-running-agents","title":"Effective Harnesses For Long Running Agents","http_status":200,"content_type":"text/html; charset=utf-8","capture_method":"plain","fetched_at":"2026-06-11T04:15:19.450708+00:00","bytes":154607,"raw_path":"7f7a70a6764975801eea23bab1b78e6c353c5ce311b10461d278849bb098ac5d.html","content_hash":"eff367f72d7b7059935b9964f2a0d2a663aac0f117d28eb3bd544cb9719318ee","excerpt_chars":1200,"truncated":true,"excerpt":"Effective harnesses for long-running agents \\ Anthropic Engineering at Anthropic Effective harnesses for long-running agents Published Nov 26, 2025 Agents still face challenges working across many context windows. 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