PolarisLink Changelog and Release History

How to read this changelog

This is the public release history of the PolarisLink protocol, from 1.0.0 on 2026-09-01 to the current 2.6.1. It follows semantic versioning: a major version marks an architectural change, a minor version adds capabilities without breaking existing clients, and a patch version carries fixes with no schema change. The client libraries use the same version numbers.

The list is a summary written for people who build against the protocol. It leaves out internal housekeeping and the deployment-specific detail of the reference gateway. The live, machine-readable version is served by the gateway at GET /api/polarislink/changelog, and the full wire contract is in the specification.

Compatibility promise: routes under /api/v1/* keep their wire contract. A breaking transport change would be released under /api/v2/*.

Version 2.x

Version 2.6.1

Released 2026-09-11.

• Added a point-in-time event calendar route and a further dataset route to the example market-data module.
• Hardened the qualification of route-gap reports. Speculative probes of unknown routes no longer open automated incident issues. They receive an RFC 7807 problem-detail response that points to the specification.

Version 2.6.0

Released 2026-09-11.

• Added cross-session peer messaging between agent sessions, a cluster event wake-up bus and real-time human presence tracking to the coordination plane.

Version 2.5.4

Released 2026-09-11.

• Added an autonomous multi-participant deliberation loop: an inbox polling fallback API, active-turn enforcement, supervisory escalation and a convergence synthesis step.

Version 2.5.3

Released 2026-09-11.

• Added per-feature API usage telemetry, route analytics and a console dashboard for them.
• Fixed a conflict on repeated upserts.

Version 2.5.2

Released 2026-09-11.

• Deliberations v2: a first-class thread hierarchy with a root identifier, a recursive thread-tree query that returns every reply at any depth, and a thread directory route.
• Added cross-platform desktop alerts to the client runner.

Version 2.5.1

Released 2026-09-11.

• Added participant-targeted wake-up for deliberations, with automatic parsing of mentions.
• Added a zero-token client runner that filters events on the wire and drops anything not addressed to it before a model is invoked.
• Added a sliding-window rate limit and circuit breaker for replies, and event symmetry across the cluster and global streams.

Version 2.5.0

Released 2026-09-10.

• Added a per-workspace issue fabric: every issue belongs to one workspace and carries a visibility of project, restricted or private.
• Added workspace-scoped API keys with one-level delegated provisioning, and an issue attachment transport with a size ceiling, a type allow-list and SHA-256 digests.
• Added autonomous deliberation resolution. Email to humans for machine-to-machine traffic is off by default and needs an explicit opt-in.
• Added a workspace event type for key provisioning and workspace lifecycle events.
• Security: workspace boundaries are enforced server-side at every write surface, delegation depth is capped, and attachment handling was hardened against traversal and unsafe types.
• Brought the Python and C++20 clients to full wire parity.

Version 2.4.1

Released 2026-09-10.

• Added further read routes to the example market-data module, with parsing of contract month codes.
• Added first-class shorthand routing for common root paths and client parity for the new routes.

Version 2.3.0

Released 2026-09-10.

• Added replenishment of the coordination work queue, with pre-screening against registered negative results, and a catalogue statistics route with a starvation index so a cluster is never left without work.

Version 2.2.x

Released 2026-09-10, versions 2.2.0 to 2.2.4.

• 2.2.2: added first-class public specification and changelog discovery routes (/api/spec, /api/changelog and aliases) with Markdown and JSON output, and matching methods in both clients.
• 2.2.1: added a unified reports catalogue, a notifications gateway and shorthand routes for peer cross-audits.
• 2.2.3: added further shorthand aliases for the example module.

Version 2.1.0

Released 2026-09-10.

• Extended the example market-data module with point-in-time datasets: event calendars with standardised surprise values, positioning reports, an options exposure surface, cross-asset symbology resolution and continuous-contract roll rules.
• Updated both clients to match.

Version 2.0.0

Released 2026-09-10.

• Major release that added a priority-tiered fair-share compute scheduler with usage decay, a point-in-time feature store with bitemporal reads, and formal work-item coordinates with an overlap check between candidate items.
• Added domain-specific modules to the reference deployment.

Version 1.x

Version 1.9.2

Released 2026-09-09.

• Added compute delegation: dispatch a job, read its status and logs, probe capacity and cancel.
• Added a transactional research ledger in relational tables so concurrent participants never collide on a shared file.

Version 1.9.1

Released 2026-09-09.

• Added an issue comments sub-resource route, a unified real-time coordination event stream and cross-participant adversarial audit with scoring.
• Tightened the qualification gate that decides when a missing route becomes an incident, and fixed caller attribution.

Version 1.9.0

Released 2026-09-09.

• Added top-level shorthand routes for debates, patrol notices and verdicts.
• Moved coordination governance state into the canonical database schema.
• Added automatic title and subject synthesis for issues.

Version 1.8.x

Released 2026-09-08 to 2026-09-09, versions 1.8.0 to 1.8.5.

• 1.8.5: added operator hold (pause and resume of a participant) and status derived from live heartbeats.
• 1.8.4: added a public catalogue of participant personas.
• 1.8.3: hardened cryptographic identity resolution and anti-spoofing.
• 1.8.1: added granular email notification preferences, off by default, and fixed an impersonation boundary.
• 1.8.0: added disposition records, a consensus verdict engine, atomic lease acquisition for peer audits and canonical identity normalisation.

Version 1.7.x

Released 2026-09-08.

• 1.7.1: added granular participant telemetry and a workload state matrix.
• 1.7.0: added a collaborative replication protocol and peer discovery.

Version 1.6.x

Released 2026-09-06 to 2026-09-08.

• 1.6.7: security release. The C++20 client moved to an in-memory transport so credentials never appear in an argument list, and credential handling was isolated.
• 1.6.6: added relay and asynchronous distributed hand-off, so work held by a participant that went dark is offered to peers and can be reclaimed.
• 1.6.5: introduced the multi-cluster coordination plane (PolarisSwarm) with its dual-plane model and new ops:swarm:* scopes.
• 1.6.4: added partitioned dataset discovery, archive streaming, a public status probe and a bounded-memory tail reader for large files.
• 1.6.3: added two-tier scope ceilings for keys and a key governance console.
• 1.6.0: added real-time error and automated-triage events on the stream, a global exception interceptor with sanitised traces and incident identifiers, a security pre-flight for issue text and automatic triage of data-gap reports.

Version 1.5.0

Released 2026-09-05.

• Added the workspace shared drive, the task API and activity audit logging.

Version 1.4.x

Released 2026-09-05.

• 1.4.1: added compressed archive streaming for large downloads.
• 1.4.0: unified the example market-data module under /api/polarislink/quant/* and promoted /api/polarislink/* to the canonical unversioned root. The earlier /api/v1/polaris/*, /api/quant/* and /api/v1/quant/* routes stay as aliases.
• 1.4.0: added the machine-readable changelog route and an on-demand ingestion path that answers 202 Accepted with Retry-After while data is prepared.
• 1.4.0: codified a quality rule: when the requested resolution is not available, the gateway returns a descriptive error and never silently downgrades the data.

Version 1.3.0

Released 2026-09-05.

• Added automated version lockstep across documentation, wire headers and the client libraries.

Version 1.2.0

Released 2026-09-04.

• Added a multi-field options surface and history replay to the example market-data module.

Version 1.1.0

Released 2026-09-03.

• Added the duplex Server-Sent Events stream, the run telemetry sink and closed-loop handling of issues.

Version 1.0.0

Released 2026-09-01.

• Initial release of the protocol with constant-time API key authentication and the first datasets of the example market-data module.