A generation whose request or poll fetch was in flight at a host death counts
one failed attempt of the retry policy (backoff, the partial kept, the same
deferred handle polled again); without retries left the run ends with
runFailure interrupted. restartLimit ends every other task visibly instead of
parking it (tool error result, compactionFailure, runFailure restart_limit,
faulted extension tasks) and reports task_interrupted; retryTask, task_parked
and the restart_limit blocked reason are removed.
closes#11139
- pi-ai: AI_TELEMETRY_SCHEMA; pi.ai.request and pi.ai.poll spans around Models requests via a lazyStream observer
(no provider changes), first_chunk and block events (never per delta), usage/cost end attributes, provider_error
status with a bounded message, aborted stays ok; duration, first-chunk, token and cost metrics; option renamed
telemetryContext -> telemetry (a parent span)
- pi-telemetry: TelemetryContext carries readonly metrics and propagation capabilities on every span
- chord/context: Context.telemetry is always a TelemetrySpan (NOOP default); withTelemetry takes spans
- durable: DURABLE_TELEMETRY_SCHEMA; pi.durable.submit (inputs start their own trace linked to the caller) and
pi.durable.phase spans for every task phase; stored carriers on submissions and tasks (TaskOptions.trace, links);
entry, submission, checkpoint, replay and report events after commit; resumed tasks stay in their trace; phase
duration, active task and report metrics; failed phases carry fixed categories with bounded messages
Tasks end a phase asleep with runtime.sleepUntil() or { status: "sleeping", until, checkpoint }:
no invocation is held, the deadline survives restarts, and the task resumes at its checkpoint once due.
Generation retry/poll and compaction retry sleep this way. Harness.wake() and HarnessOptions.onWake let
a host such as a Durable Object wake the process itself. HarnessOptions.setTimer arms every Harness
timer, and chord Progress paces on an injectable clock. SQLite migrates to schema version 2 to admit
the sleeping status.
A generation waiting on a blocking threshold compaction sent its request
whatever the outcome. When summarization failed, the context was still above
the blocking threshold: a session at 996K of a 1M window got an empty length
answer on every turn and nothing showed the error. The generation now fails
with model_error (Compaction failed: <error>) when its compaction failed,
faulted, was orphaned, or was aborted directly; a compaction that found
nothing to compact or was declined still lets the request go ahead.
pi.live.compactionFailure keeps the newest failure (task, reason, error)
until a compaction produces a summary. The agent events' snapshot carries it,
and compaction_end carries error for a failed compaction.
Replayed thinking is often not part of the live context (for example,
radius drops it, and Anthropic drops blocks that do not match their
request), but serializeConversation included all of it. A Pi Mobile
session at ~996K of 1M context tokens produced 1.38M-token summarization
requests that failed on every attempt. Providers only return summaries of
the reasoning anyway; visible text, tool calls, and tool results record
what happened.
Assign each conversation its own UUIDv7 and forward it to model requests for prompt-cache affinity. Lazily backfill legacy conversations and cover real Codex cache reuse.
Closes#10424
- Registry of named extensions (tools, sections, hooks, wraps, tasks) with install/uninstall;
defineExtension, defineTool, section, hook, wrapTool, wrapSection
- pi.agent document (model, thinking level, extensions, tools filter, instructions, cwd),
configure(), Conversation.agent()/configure(), agent option on root/createConversation/fork,
task-owned conversations copy their owner's agent
- Harness-wide HarnessSettings read at every use; env function built per use
- Hooks and the agent resolved per task phase; tool calls resolved with the tools filter applied
- ToolRegistration<TParameters, TDetails> types execute() args from parameters
- HarnessOptions.conversationCreated; Tx.submissionByRequest() and Tx.createSubmission()
- FileSystem.id; edit/write serialize per file system id and canonical path
- CodingTools extension (read, write, edit, bash)
- Examples 06-31 on the new API, README and CHANGELOG
Manual compact(), background and blocking threshold compaction, and overflow
compaction with one retry. Summaries are headed pi.compaction entries placed
through the inbox, or appended by a compaction the generation waits on; the
stale rule decides between concurrent summaries.
