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Released 14 October 2026 · API 0.9.291–0.10.56.

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Features

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Connect a repository

The API has a new endpoint, POST /repo/v1/repos, that registers a repository in a workspace from its remote URL alone. GET /repo/v1/repos/{repo_id} reads it back. Two spellings of one remote land on the same repository, so registering again is safe. Skills, agents, and scorers can now name the repository they came from with a sourced_from relationship, so you can find everything that came from one repository. A coding agent can do both steps with the extension__repo__register_repo MCP tool and the atlan-connect-repo default skill. To start, run the atlan-connect-repo skill from a checkout of your repository.

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Improvements

  • Agents: PATCH /agent/v1/agents/{agent_id} now publishes a released agent’s next version when it changes the model or instructions, instead of failing with version_already_released.
  • Agents: Added POST /agent/v1/agents/{agent_id}/versions, which publishes a version from only the fields that change, and GET /agent/v1/agents/\{agent_id\}/versions to list every version.
  • Agents: Each skill an agent uses can now be pinned to an exact version_ordinal; a skill without one is pinned to its current release.
  • Agents: An agent can now record the MCP servers it calls with a uses_mcp_server relationship, as it records skills with uses_skill.
  • Agents: POST /agent/v1/agents/{agent_id}/sessions now takes an Idempotency-Key header on the Atlan runtime, so a retry returns the same session instead of starting another.
  • Agents: GET /agent/v1/sessions/{session_id} now reports a session’s launch_status on the Atlan runtime: pending, started, failed, or unknown.
  • Agents: A session on the Atlan runtime now keeps its outcome and usage in execution after its run’s history expires.
  • Agents: A session whose run stopped before saving its outcome is now recovered, or reported with session_status unknown when no outcome can be found.
  • Agents: extension__agent__get_trace_spans now returns a step’s content, errors, and attributes when asked with include, and keeps only some steps with names or errors_only.
  • Evals: PATCH /eval/v1/scorers/{scorer_id} and PATCH /eval/v1/datasets/\{dataset_id\}/records/\{record_id\} now save a new version in one step, so a failed edit no longer half-saves.
  • Evals: Renaming or re-describing a scorer with PATCH /eval/v1/scorers/\{scorer_id\} no longer creates a new version of it.
  • Ontology: Added POST /ontology/v1/draft-saves, which saves a reviewed import’s new definitions as unpublished drafts once a person approves the preview.
  • Registry: POST /registry/v1/search and POST /registry/v1/aggregate now take rel.<rel_type> filters, which keep the artifacts with that relationship to the artifacts you name.
  • Registry: POST /registry/v1/aggregate now groups by a relationship’s target with group_by rel.<rel_type>, for example to count the agents that use each skill.

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Fixes

  • Ontology: Fixed importing an ontology export into another ontology or workspace, which needed its IDs edited first (POST /ontology/v1/imports/preview).