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Newest first. Breaking changes are announced here before they ship.

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2026-09-24: Max detects without rewriting

  • Custom rules now enforce on Max with validation_scope.rules; the Enforce Content example shows the confirmed request shape.
  • Max (anchor_3_0_max) returns per-line violations but no rewrite. Custom rules enforced on Max never return a rewritten line. The hosted OpenAPI model_engine description matches that contract.
  • On a Max job, violations[].fix.suggested_text carries the rule’s own fix note when the rule has one and is otherwise empty. Escalate on an empty suggested_text, or run the same content through Flagship.
  • Rewrite remains a Flagship capability, including for an uploaded policy checked through a trained adapter. Pricing no longer lists rewrite as included on Max.

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2026-09-23: Anchor routing and result payloads

  • A scope-less Flagship (anchor_3_0) request stays on Flagship and checks the active managed catalog only. Activated custom rules are not evaluated unless the caller asks for Max.
  • Max (anchor_3_0_max) enforces activated custom rules at inference. A Flagship request that explicitly names a cust_* rule still upgrades to Max and reports engine_upgrade_reason: "custom_rules".
  • Mini (anchor_3_0_mini) runs unscoped against its frozen rulebook and returns whole-message flagged_rules; it cannot honor workspace pack toggles or validation_scope.
  • Sync and async completion payloads now share the same nested result shape. Public usage is returned as result.units and result.cost, and applied_validation_scope reports counts rather than the full rule ID list.
  • Rule and rulepack IDs for validation_scope come from List Rules and Rule Packs. See Enforce Content.

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2026-09-22: Anchor 3.0 Mini, Flagship, and Max

  • model_engine on POST /api/v3/content/validate accepts anchor_3_0_mini, anchor_3_0 (Flagship, default), and anchor_3_0_max.
  • See Choose a model for when to use each tier, Pricing for per-validation rates, and the Anchor 3.0 benchmark for quality and latency.

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2026-09-18: Anchor 3.0 pricing

Documented per-enforcement pricing for Anchor 3.0 Mini, Flagship, and Max, including rewrites, custom rules billed in groups of 10, and Flagship Training Studio. See Pricing.

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2026-09-02: Guard for Agents

  • The Enforcement API became available in production for agent response paths.
  • MCP connectors can import policies from Notion, Linear, Confluence, and Google Drive.
  • Anchor 3.0 is available as model_engine: "anchor_3_0".

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2026-09-01: Training Studio API

  • Added POST /api/policies/import/{import_id}/train.
  • Added GET /api/policies/import/{import_id}/train for training status.
Training Studio’s broader product launch is separate from these endpoints.

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2026-08-11: Command

  • Command launched with API keys, rulepack activation, policy import, and live activity.

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2026-08-04: Activity API

  • Added GET /api/activities.
  • Added GET /api/activities/{activity_id}.
  • Activity queries support a 30-day window.