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This changelog tracks user-visible documentation and integration guidance changes.

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2026-03-23 — v0.5.1 (Hindsight features + scaling)

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New SDK features

  • Temporal range queries — recall(min_timestamp=, max_timestamp=) filters evidence by when events occurred, not when they were ingested. See temporal queries.
  • Occurrence time tracking — remember(occurrence_time=) records when an event happened, separate from ingestion time. See occurrence time.
  • Search budget control — recall(budget="low"|"mid"|"high") controls the latency/quality tradeoff. See search budget.
  • Staleness metadata — Query evidence now includes is_stale and superseded_by fields. Stale entries are automatically deprioritized in ranking. See staleness detection.
  • Mental model entry type — remember(intent="mental_model") stores consolidated entity summaries that are prioritized over raw facts in context assembly. See mental models.

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Server improvements

  • Per-run disk-backed index pools — memory stays bounded regardless of data volume.
  • LLM telemetry with Prometheus metrics (mubit_llm_calls_total, mubit_llm_tokens_total, mubit_llm_call_duration_seconds).
  • Connection pooling, write tuning, and client-side LLM rate limiting for 200+ concurrent agent workloads.
  • Event stream trimming, storage health monitoring, and disk usage metrics.
  • Sanitized error messages — no internal implementation details exposed to SDK clients.
  • New xlarge instance plan tier (8 CPU, 16 GiB) for high-throughput workloads.

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No breaking changes

All new fields are optional with sensible defaults. Existing code continues to work without modification.

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2026-03-16 — Documentation sync

  • Added SDK Configuration Reference page covering env vars, transport selection, and endpoint defaults.
  • Added gRPC Transport Guide explaining when to use gRPC vs HTTP, endpoint configuration, and TLS.
  • Added Activity & Audit Trail documentation for listActivity, exportActivity, and appendActivity.
  • Added missing SDK methods to the SDK methods reference: activity, ingest job tracking, run management, context snapshot.
  • Added missing HTTP routes to the Control HTTP reference: activity, runs, ingest stats, heartbeat, context/snapshot.
  • Added missing gRPC RPCs to the Control gRPC reference: full variable, concept, action, and cycle RPCs.
  • Added core route reference to Core Direct Lanes: SDM, scratchpad, sessions, storage, ACL, PubSub.
  • Added Troubleshooting / FAQ page covering common issues.
  • Fixed GitHub links in Framework Integrations from anthropics/ricedb to mubit-ai/ricedb.

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2026-03-14 — v0.4.1 (JS SDK patch)

  • Fixed keepCase gRPC field casing in the JavaScript SDK to preserve proto field names.

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2026-03-14 — Integration packages v0.1.0

  • Published 7 framework integration packages:
    • Python: mubit-crewai, mubit-langgraph, mubit-langchain, mubit-adk
    • JavaScript: @mubit-ai/langgraph, @mubit-ai/ai-sdk, @mubit-ai/mcp
  • TLS enabled on api.mubit.ai and api.dev.mubit.ai.

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2026-03-13 — v0.4.0 (MAS Features)

  • Added step-level outcome recording: RecordStepOutcome RPC, /v2/control/step_outcome HTTP route, record_step_outcome() SDK helper. Records per-step process reward signals (signal, rationale, directive hint) for dense RL within a run.
  • Added lane-scoped memory: lane field on IngestItem, lane_filter on queries and context assembly, shared_memory_lanes on agent registration. Enables multi-agent memory isolation within a shared run.
  • Added step-wise reflection: step_id, last_n_items, and include_step_outcomes fields on ReflectRequest for targeted, incremental lesson extraction scoped to recent evidence or a specific step.
  • Added auto-extraction in mubit.learn: heuristic extraction of rules, lessons, preferences, and facts from LLM responses without an extra LLM call (auto_extract=True in learn config).
  • New cookbook: Step-Level Outcomes and Process Rewards.
  • New cookbook: Lane-Scoped Multi-Agent Memory.

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2026-02-19

  • Rebuilt the first tab as an SDK-first information architecture rooted at / and /sdk/*.
  • Removed legacy first-tab routes under /developer-platform/*, /sdk-guides/*, /external-integrations/*, /hdql/*, and /getting-started/*.
  • Removed catch-all route redirects so retired first-tab URLs now hard-retire instead of forwarding.
  • Added a full SDK method catalog page with all contract operations (auth, control, and core) mapped across SDK method names.
  • Rewrote onboarding and basics pages with richer technical guidance while preserving concise execution steps.
  • Kept canonical endpoint guidance on MUBIT_ENDPOINT + MUBIT_API_KEY with optional HTTP/gRPC endpoint overrides.
  • Updated machine-facing docs entry points in agents.md and llms.txt to the new SDK navigation model.

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2026-02-20

  • Expanded SDK/core value-prop coverage to explicitly include low-latency retrieval behavior, associative context grouping, and state-guardian control patterns.
  • Added deep-dive cookbook guides:
    • /recipes/event-driven-agents
    • /recipes/branching-memory
    • /recipes/stateful-task-trees
  • Added linked-run and event-stream coverage in SDK/API pages, including include_linked_runs, link_run/unlink_run, and control event subscription usage.
  • Added coverage for core pub-sub/session/scratchpad/maintenance capabilities with policy-boundary caveats for direct /v2/core/* access.
  • Corrected cookbook payload field naming from target_run_id to implemented linked_run_id.

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Next steps