- release.sh health gate runs with MOSAIC_ENSURE_SKIP=1: the gated task run cannot re-enter release self-determination - run-task.sh warns on release drift instead of silently using a stale image - ROADMAP: M20 decision recorded (packages/* monorepo at usurpation, continuity-first); restructure sequenced as M20 phase 1 Closes #39
Mosaic runtime adapters
An adapter is the entire harness-specific surface of the system. Everything upstream of an adapter — configuration, contracts, missions, tasks, run records — is harness-agnostic; everything inside an adapter may assume one specific agent runtime.
Contract
An adapter lives at:
/opt/mosaic/adapters/<name>/adapter.sh
and must be executable. The dispatcher (/opt/mosaic/src/run-agent.sh)
selects it via MOSAIC_ADAPTER (default: pi) and execs it after the
system prompt has been generated.
Inputs (environment):
| Variable | Meaning |
|---|---|
MOSAIC_SYSTEM_PROMPT_FILE |
Absolute path to the generated system prompt (contracts + optional mission section). Read it; do not modify it. |
MOSAIC_REQUEST |
The exact user request text (may contain newlines). |
MOSAIC_PROVIDER |
Configured provider name. |
MOSAIC_MODEL |
Configured model id. |
Optional, adapter-specific (documented per adapter):
| Variable | Meaning |
|---|---|
MOSAIC_MOCK_RESPONSE |
mock only: the verbatim response to emit |
Outputs:
stdout: the model response text — the only channel the orchestrator capturesstderr: diagnostics (never credentials)- exit
0: success; nonzero: failure
Rules
- Adapters print ONLY the response on stdout. Status lines go to stderr.
- Adapters never read configuration files; the resolved settings arrive via environment.
- Adapters never write outside
/var/lib/mosaic. - Adding an adapter requires: a new directory, the contract implementation, and
adding the name to the allowlist in
scripts/mosaic-config.mjs.
Included adapters
pi— the pinned@earendil-works/pi-coding-agentCLI in noninteractive print mode (-p), ambient discovery disabled, stdin detached.mock— deterministic echo ofMOSAIC_MOCK_RESPONSE. Test-only: never use it where a real model response is required.