0.5.0-rp

AXP 0.5.0-rp is the release where the experiment file becomes a real product surface. Instead of hand-building variants, you describe the agents, prompts, products, environments, and tests you care about; AXP resolves the matrix, runs it, and keeps the results tied back to those coordinates.

The rest of the release follows that thread: remote and local runs now share the v2 experiment model, secrets are manageable from the CLI, platform, and MCP, results pages understand more of the experiment shape, and the docs have been refreshed around the path users actually take from first experiment to repeatable comparison.

CLI

• Experiment YAML v2 replaces the old hand-assembled matrix.variant[] shape with first-class axes for agents, prompts, environments, and products. The model rides with the agent, products can carry their own setup, and extensions let you narrow or branch a subtree without duplicating the whole file. See Experiments, Experiment YAML, and Experiment Design.

  schema_version: 2
  id: compare-install-flow
  agents:
    - name: claude
      model:
        name: anthropic/claude-sonnet-4.6
        effort: high
  prompts:
    - id: install
      prompt: "Install the CLI and write its version to /workspace/version.txt."
  products:
    - name: cli
      type: CLI
      setup: npm pack
  environments:
    - name: clean-linux
      setup: "true"
  extensions:
    - id: docs-assisted
      prompts:
        - "Use the docs site when you need command details."
  tests:
    application:
      - name: version-file-exists
        script: test -f /workspace/version.txt

• environment_variables now supports both literal values and axp://secrets/<slug> references in local and platform runs. That means one experiment can keep ordinary config inline while letting sensitive values resolve from the org secret store. See Environment and Auth and Experiment YAML.

  environment_variables:
    - name: LOG_LEVEL
      value: debug
    - name: GITHUB_TOKEN
      value: axp://secrets/prod-github

• Org secrets can now be created, listed, deleted, and managed through the platform UI, CLI, and MCP. Lists return metadata only, so secret values do not come back into terminal history or chat logs. See Environment and Auth and AXP CLI.

• axp secrets set, list, and rm now manage org secrets from the terminal, with paginated metadata-only listing and idempotent deletes.

• The old direct-sandbox CLI path was removed. axp run now goes through platform dispatch, which keeps run identity, artifacts, and results on the same path. See Runs.

Platform

• Remote runs now use the v2 experiment model from dispatch through results and artifact handling. The practical payoff: the run you inspect later is tied to the same agent, prompt, product, and environment coordinates you authored. See Runs and Results.
• Setup-scoped file staging now makes remote run inputs more predictable. Put the files next to the setup that needs them, and AXP carries them into the resolved variants. See Experiment YAML.
• Cost cap enforcement now applies more consistently across reported and in-flight run paths, so runaway experiments stop closer to the limit you set.
• Local Docker runs are more resilient around slow image pulls, host-port binding, and artifact collection fallback. See Runs.
• Secret handling now covers local resolution, dispatch-time resolution, sandbox injection, redaction coverage, and usage telemetry. See Environment and Auth.
• Hosted agent sessions can now receive managed MCP server configuration when the required shared credential is available.

Web

• The platform secrets page now matches the shipped environment_variables and secret-store behavior more closely, including the broader org secrets management workflow.
• Results UI and experiment detail flows were refreshed around the v2 experiment model, so results feel less like a flat run log and more like a comparison across the dimensions you designed. See Results.

Documentation

• Secrets docs, schema strings, and the platform secrets page now describe the same shipped environment_variables and secret-store behavior. Start with Environment and Auth.
• The CLI reference and runs-and-artifacts docs were refreshed to match the current command surface and artifact layout. See AXP CLI and Runs.
• Getting started, overview, experiment design, runs/results, experiment reference, and onboarding guidance were refreshed for the current product journey.
• A docs-impact check was added to the task-to-PR self-review flow, so user-facing documentation gets considered before product changes merge.