Rterm Agentspan

RTerm ↔ AgentSpan Bridge

Make RTerm's operations durable. Normal RTerm agent runs are interactive and die if RTerm/your machine restarts; the bridge hands work to an AgentSpan (Netflix Conductor) server that keeps going and resumes from the last completed step — plus plan-execute determinism, Kafka/SQS/AMQP event triggers, and a visual execution UI.

Two agents, two LLMs (don't conflate): RTerm's own agent uses RTerm's model profiles. A durable agent you launch runs on the AgentSpan server and uses its own provider config. The bridge between them is just an HTTP URL.

1. Setup (one time)

1. Run the AgentSpan server (default port 6767):

   agentspan server start        # or: launchd/systemd service, Docker, or the runtime JAR
   curl http://localhost:6767/actuator/health   # → {"status":"UP",...}
   

2. Point RTerm at it: Settings → AgentSpan → serverUrl = http://localhost:6767 (default), enabled = true, Save. This is persisted (schema v5) and live — no RTerm restart.
3. Auth (only if the AgentSpan server has standalone auth on): put AGENTSPAN_AUTH_KEY/AGENTSPAN_AUTH_SECRET as a KEY=VAL blob in the RTerm vault (manage_secret), then set authSecretRef to that vault key. Never inline.

Verify from RTerm: ask the agent to "check AgentSpan health" (uses agentspan_health).

2. The bridge tools (RTerm agent)

Trigger: agentspan_execution_failed (fires on FAILED/TERMINATED/TIMED_OUT). Panel: agentspan-executions (live feed).

3. Use cases (plain)

• "Might close my laptop" long task — "Run the Friday-cleanup playbook across prod-web as a durable agent on AgentSpan." Close RTerm; it keeps going; check agentspan_status later.
• "Approve when I'm back" deploy — start a durable deploy that pauses for approval; agentspan_approve hours later resumes it.
• "Same way every time" report — plan-execute: LLM plans once → immutable workflow → deterministic run each week.
• Event-driven fix — a trigger fires → agentspan_run starts a durable cleanup even while RTerm is asleep; agentspan_execution_failed pages you if it dies.
• Reusable workflow — agentspan_register_playbook turns your playbook into a Conductor workflow other agents can call as steps.

4. Configuring the server's LLM (provider + model)

The server needs a provider key for any LLM-driven durable agent/step. Set env on the server (launchd/systemd/Docker), then restart:

export OPENAI_API_KEY=<key>                      # provider auto-enables when its key is present
export AGENTSPAN_LLM_MODEL=provider/model-name   # e.g. openai/gpt-4o-mini  (the SERVER-WIDE default model)

Model format is provider/model-name (e.g. openai/gpt-4o-mini, anthropic/claude-sonnet-4-6). For OpenRouter (OpenAI-compatible), point the provider at it: OPENAI_API_KEY=<openrouter key> + OPENAI_BASE_URL=https://openrouter.ai/api/v1 (reload the service so the env lands on the process — launchctl bootout+bootstrap, or remove+load; kickstart -k reuses the cached job).

5. GOTCHAS (learned the hard way — read before building workflows)

1. LLM_CHAT_COMPLETE uses the OpenAI Responses API, not chat-completions. On this Conductor build that task is hardwired to POST /v1/responses. OpenRouter's /responses is limited and 404s for many models/payloads. Fix: don't use LLM_CHAT_COMPLETE for OpenRouter — use an HTTP task that calls https://openrouter.ai/api/v1/chat/completions directly. That path is fully supported and reliable.
2. Model id must be one the server/provider actually maps. z-ai/glm-5.2 is an OpenRouter catalog id, not a provider/model-name the server auto-maps. With an HTTP task you control the exact model string in the request body, so use the OpenRouter id there (e.g. "model":"z-ai/glm-5.2").
3. ${workflow.secrets.NAME} does not auto-resolve into HTTP headers on this build (results in 401 "Missing Authentication header"). Inject the key another way: inline the Authorization header in the definition, or use a server-side env/secret the task reads. (If the key was ever exposed, rotate it and update the def.)
4. Reasoning models can return content: null with everything in reasoning when max_tokens is too low. Give reasoning models room (e.g. max_tokens ≥ 800) and instruct "output ONLY the final answer in the assistant content field."
5. External data: LLMs have no live data. Fetch first with HTTP task(s) (e.g. CoinGecko public API, Luno with basic auth), pass the JSON into the LLM prompt, and have the LLM format it.

6. A workflow that actually completes (live BTC price, v6 pattern)

Three HTTP tasks, no LLM_CHAT_COMPLETE:

1. fetch_coingecko — GET https://api.coingecko.com/api/v3/simple/price?ids=bitcoin&vs_currencies=usd,ngn&include_24hr_change=true (public, no key).
2. fetch_luno — GET https://api.luno.com/api/1/ticker?pair=XBTNGN with Authorization: Basic base64(luno_key_id:luno_secret).
3. format_with_llm — POST https://openrouter.ai/api/v1/chat/completions (Bearer openrouter key), body {model:"z-ai/glm-5.2", max_tokens:800, messages:[system:"output ONLY the final answer in the content field", user:"CoinGecko: ${fetch_coingecko.output.response.body}\nLuno: ${fetch_luno.output.response.body}\n${workflow.input.prompt}"]}.

Output map: answer = ${format_with_llm.output.response.body.choices[0].message.content}. Result: a formatted live BTC summary (CoinGecko USD+NGN, Luno last trade, 24h change). Get the Luno key id/secret and the OpenRouter key from the RTerm secrets vault (manage_secret) / the secrets skill — never inline into version-controlled definitions.

7. Reference

• RTerm Settings → AgentSpan (agentspan.serverUrl, authSecretRef) — persisted + live.
• AgentSpan API: /actuator/health, /api/agent/* (start/status/respond/stop/events/definitions), /api/workflow/* (start/get/terminate/retry/search), /api/metadata/workflow (register defs), /api/secrets.
• Plugin source: RTerm repo plugins/agentspan-bridge/ (conductorClient.mjs + index.mjs, 9 tools, 26+ tests).
• Standalone AgentSpan SDK/CLI: the agentspan skill.
• v3.0.0: the gateway is now self-describing — call gateway:describe (or the list_gateway_methods agent tool) to enumerate the agentspan_* tools (and everything else) live from the method registry instead of this static list.