loop-orchestration ยท diff
git:20260613.a22966d to git:20260613.8154121
16 added, 0 removed. Audit A to A.
---
name: loop-orchestration
description: Reference loop-orchestration example; a local loop host chains governed runx turns through receipts, budgets, context, and stop policy.
---
# Loop Orchestration
This example shows the runx pattern for long-running agent work:
1. An outer loop host decides whether work should continue.
2. Each iteration submits one normal governed runx turn.
3. Each turn seals a receipt before the loop can advance.
4. The next turn consumes only explicit inputs, projection state, and receipt
summaries.
Nothing in this example adds a loop engine to `runx-core`. The loop host is just
an application script. In production it could be a hosted service, Temporal
workflow, LangGraph app, n8n workflow, or another orchestrator.
## Run It
```sh
sh examples/loop-orchestration/run.sh
```
The script runs three demonstrations:
- **success:** two governed turns complete a tiny build-review loop;
- **refusal:** a requested tool is outside the loop policy, so the loop stops
before another turn is submitted;
- **context gate:** an agent-task turn pauses with digest-bound skill context
and explicit `allowed_tools`, showing what a host or managed provider would
receive without requiring a model key.
The output prints each run id, receipt id, decision, and next-turn reason.
+ ## Check The Harness
+
+ For the repeatable inline harness, use a fresh receipt store and the demo
+ signing identity. A clean store avoids mixing receipts signed by different local
+ test issuers.
+
+ ```sh
+ tmpdir="$(mktemp -d)"
+ RUNX_RECEIPT_SIGN_KID=runx-demo-key \
+ RUNX_RECEIPT_SIGN_ED25519_SEED_BASE64=QkJCQkJCQkJCQkJCQkJCQkJCQkJCQkJCQkJCQkJCQkI= \
+ RUNX_RECEIPT_SIGN_ISSUER_TYPE=hosted \
+ "${RUNX_BIN:-crates/target/debug/runx}" harness examples/loop-orchestration \
+ --receipt-dir "$tmpdir" \
+ --json
+ ```
+
## What This Proves
The important boundary is not the Node script. It is the contract:
- A **loop** owns scheduling, durable loop state, projection, and stop policy.
- A **turn** is one runx skill/graph run with explicit authority and one sealed
receipt.
- A **handoff** is an artifact/result the loop host can inspect; it is not
hidden prompt continuation.
- A **projection** is derived from receipts and admitted signals, not from
ambient memory.
## Security Rules
- The loop has a max-turn budget.
- The turn runner receives only declared inputs.
- Tool choices are checked against loop policy before another turn is allowed.
- Context skills are advisory, digest-bound, and untrusted.
- A pause or refusal is a healthy result; the loop does not keep prompting until
it gets the answer it wants.
## Adapting The Example
Replace `loop/loop-host.mjs` with your real orchestrator and keep the same
shape:
```text
load projection -> submit runx turn -> read receipt/result -> check stop policy
```
Do not move product-specific scheduling or state into the kernel. If a loop
needs to wake up later, persist the loop state in the host and submit another
runx turn when policy allows.