pi-schema: opt-in coercion, compile(schema, { coerce: true }) with coerce() and
parse(), the superset of TypeBox's Value.Convert rules and pi-ai's old coercion;
unresolvedRefs option; url and json-pointer-uri-fragment formats.
pi-ai: Tool takes any JSON Schema; validation through pi-schema; Type, Static
and TSchema are no longer exported (breaking). pi-agent-core and pi-durable:
tools on pi-schema, no TypeBox dependency. Coding agent: extensions keep Type,
Static, TSchema and StringEnum through an extension view of pi-ai; built-in
tools stay on TypeBox.
Replace build-time shell utilities with Node filesystem operations and retire the native sandbox example in favor of existing isolation options. Upgrade glob matching and worker-test dependencies and refresh the lockfiles.
Fixes#4748.
## Problem
Extensions that import `keyText`/`keyHint` from
`@earendil-works/pi-coding-agent` can resolve their own copy of the
package (their own `node_modules`, or the bundled `cli.js` vs
`dist/index.js`). That copy's keybindings are never set by the host, so
it falls back to a manager with only `tui.*` bindings, and
`keyHint("app.tools.expand", "to expand")` renders as ` to expand`.
## Change
The host passes its own `keyText` and `keyHint` to extension renderers,
the same way it passes `theme`:
- `ToolRenderContext` (`renderCall`/`renderResult` context):
`context.keyHint(...)`
- `MessageRenderOptions` and `EntryRenderOptions`:
`options.keyHint(...)`
All three extend a new exported `KeybindingHints` interface. The docs
and the `debug-provider` example now use the injected functions and warn
against importing them in renderers.
Not done:
- Moving the `pi-tui` keybindings singleton to `globalThis`. Per the
discussion in #7011, extension-facing state should be host-owned and
passed through the extension API instead of shared through process-wide
module state.
- `ctx.ui.keyText`/`keyHint`. No reported case needs them outside
renderers, RPC and print modes never install app keybindings, and adding
them to `ExtensionUIContext` would break SDK hosts that implement it.
## Tests
- `test/extension-keybinding-hints.test.ts`: tool, message, and entry
renderers format a user-overridden `app.tools.expand` binding.
- `npm run check` passes.
tui.select.pageUp/pageDown were configurable but ignored by SelectList,
SettingsList, editor autocomplete, and most coding-agent selectors. In
fullscreen mode, the default PageUp/PageDown also scrolled the transcript
instead of reaching the focused list.
- add getSelectPageIndex() and handle page keys in SelectList, SettingsList,
editor autocomplete, and the model, scoped models, auth, user message,
settings submenu, llama search, and /mcp selectors
- add Component.capturesViewportInput: a focused component that sets it
receives fullscreen viewport keys instead of the transcript, as a focused
overlay already does
- let page keys move an open autocomplete menu before app actions, so a
remapped Ctrl+V pages the menu instead of pasting an image
closes#7629
Co-authored-by: muyiyr <940955635@qq.com>
## Summary
The docs refresh (#9898) cut `docs/extensions.md` from about 3,100 lines
to 130, dropping API reference and tool guidance. #11039 restored part
of it. This PR restores the full guide and corrects it against current
source.
- **Structure:** the original sections, with the ASCII lifecycle diagram
replaced by three Mermaid diagrams (run, turn, session) and ordered hook
lists, plus a handler composition table.
- **Merged:** content added after the cut: tool exposure, calling other
tools, structured output, MCP servers, `registerToolRenderer`, virtual
models, `provider_stream_event`, `before_agent_start` `messageType`.
- **Corrected:** removed or renamed APIs (`modelRegistry.stream()`,
prompt sections are `<tools>`/`<rules>`, `builtin:read` paths,
`highlightCode`), wrong behavior claims (errors only by throwing,
`model_select` on restore, `sendUserMessage` always triggering a turn,
override warning, `truncateLine` bytes), examples that did not
type-check, links to removed `tui.md` patterns and `rpc.md` anchors, and
wrong API lists in the examples table.
- **Kept:** anchors that other docs and changelogs link to, as `<a id>`
tags.
- **Fixed example:** `reload-runtime.ts` tool queued `/reload-runtime`
with `deliverAs: "followUp"`. Queued text reaches the model as a plain
user message, so the command never ran and Pi never reloaded. The tool
now sets a flag and returns `terminate: true`; an `agent_settled`
handler sends `/reload-runtime` with `expandPromptTemplates: true`,
which runs after the settled handlers finish, while the agent is idle.
In the long run it may be better to revisit how API reference is,
provided to the agent, especially since more capable models do explore
the source without it.
## Validation
- `npm run check`
- Edited TypeScript examples type-check against current types
- All relative links and anchors in `extensions.md` resolve, including
inbound anchors from other docs
- `reload-runtime.ts`: faux-provider harness test (temporary, not
committed) shows one reload after the run settles and no extra model
request; the old version never reloads. Also verified in interactive
mode with a real model.
- Reviewed by GPT-6 Astra and GPT-5.6 Sol against source; all findings
applied
- ai: StreamingJsonParser / ToolCallArgumentsStream read each argument delta once (tolerant,
immutable snapshots, linear cost); every provider, pi-messages and the faux provider use it
and keep stream state (partialJson, partialArgs, index, customInput, streamIndex, Bedrock
reasoning bytes) off the content blocks; grammar tool input appends per delta
- agent: streamProxy uses the same parser
- chord: Delta append ops own their text (ownedSlice), so ops and replicas no longer keep the
whole growing string alive
- durable, ai, mcp: bounded error excerpts and summaries own their characters
- coding-agent: tool calls render streamed arguments once per frame, not once per delta
When a todo call fails schema validation, createErrorToolResult produces
details: {} (a truthy empty object), so renderResult skips both the
!details and details.error branches, then switch (details.action) has no
default and returns undefined. ToolExecutionComponent.updateDisplay()
then calls addChild(undefined), and the next Box.render pass crashes the
whole interactive TUI.
Add a default case that renders the validation error text.
Deletes packages/client, packages/protocol (CBOR codec), packages/server, coding-agent's
src/experimental (except source-resolver.ts, which source runs still preload), src/cli/experimental,
src/client, the example plugin, and their tests. coding-agent no longer depends on @earendil-works/chord.
The installer lock drops esbuild, so its platform-package sanity check goes too.
Runs started by pi.sendMessage(..., { triggerTurn: true }) skipped before_agent_start. After their first tool call, the next-turn refresh fell back to the base prompt options and patched away the sections handlers had added, changing the system prompt mid-run and breaking the provider prompt cache.
These runs now go through the same setup as prompt(): compaction check, before_agent_start, tool loadout, nextTurn messages, handler messages, and the system patch. BeforeAgentStartEvent is a union on messageType ("user" or "custom"); custom events carry the starting message.
The session counts as busy from the start of setup, so messages sent while handlers run go into the starting run instead of starting a second one, and an abort requested meanwhile aborts the run once it starts.
closes#10267, closes#5581, closes#10639, closes#10289
partly fixes#10606
* feat(coding-agent): use pi.dev configuration schemas
* refactor(coding-agent): separate schema URL from output path
* docs(coding-agent): document published schema URLs
Editor and Input wrap their drawn cursor in fake cursor markers. The TUI
resolves them to reverse video, or drops the focused one when the hardware
cursor is shown, so terminals that extend edge cell colors into the window
padding no longer stretch the drawn cursor at the first or last column.
Also keep CURSOR_MARKER when an overlay ends directly left of the cursor.
MCP codemode exposure no longer lists tools, tool counts, or server
instructions in the codemode description. Servers are listed by name and
an optional mcp.json description; scripts find tools with searchTools()
and read instructions with describeNamespace(). codemode-deferred is an
alias for codemode.
refs #10212
Entries of only +name/-name modify the inherited tool selection, so
"defaultTools": ["+codemode"] enables codemode without repeating the
defaults. Project entries layer on top of user settings. Document how to
enable codemode without MCP and how to use classifier models from it.
This adds codemode and MCP support to pi. Codemode (packages/codemode) runs
model-written JavaScript in a QuickJS wasm VM inside a worker. From there the
script calls pi's tools as async functions, uses a per-session store, and can
read the model catalog and run classifiers. The codemode tool in coding-agent
is compatible with Codex's exec tool, and codemode.mode works like Codex's
tool modes (on or only). Large results are written to a JSON temp file. MCP
(packages/mcp) is a standalone client for stdio and streamable HTTP servers,
with OAuth.
The core only gets general mechanisms; codemode, tool_search and MCP are
built-in extensions that use them. Other extensions can replace these
built-ins. Tools declare an exposure: direct, model-only, codemode, deferred
or hidden. prepareLoadout() lets an orchestrating tool change which tool
declarations the model sees. ctx.executeTool() runs nested calls through
validation and the tool_call/tool_result hooks. Those calls emit events with
parentToolCallId and are recorded as bounded nestedCalls on the parent
result, which compaction and HTML export use. Tools can also return
structuredContent with an outputSchema, and can report errors with isError
instead of throwing. MCP servers come from mcp.json (global, or per project
after the project is trusted) or from pi.registerMcpServer(). They are
managed with /mcp and pi mcp list|login|logout, and their runtimes load on
first use.
Closes#10040
This adds experimental support for virtual models. A virtual model is a catalog entry that an extension registers with pi.registerVirtualModel(). It does not talk to a provider itself; for every request it picks a physical model and thinking level. The motivation is to make routing policies pluggable: plan on a strong model and implement on a cheap one, pick a model with a classifier, or move to a larger window when the context grows. Today this needs model switching by hand or hacks in prepareRequest.
The selection stays virtual: model_change records it, resume restores it, and each response records the physical model and thinking level that produced it. Router state can be stored on the session branch, so it follows /tree and forks and survives compaction. Context limits, compaction and image sizing use the physical model a request was routed to. examples/extensions/jev-router.ts shows a full router that uses the Jev classifier to pick Sol or Terra for planning and hands off to Luna after the first edit. docs/virtual-models.md describes the API.
Replace the tsgo native preview with typescript@7.0.2 and port the check scripts to the TS 7 API. Target ES2024, drop useDefineForClassFields: false and unused decorator options, and enable verbatimModuleSyntax. Replace tsx with node plus the source resolver hook, passed to --import as a file URL.
closes#9965
This change makes system prompt text and tool changes part of the transcript rather than silently rewriting its starting conditions. This lets Pi record when instructions changed or tools became available, restore that state after resuming or navigating branches, and preserve cached prompt prefixes where the upstream supports it.
Bundle declarative plugin packages with Chord and load fresh generations. Scope client selections to persisted Session and TUI branches, and replace stale local server generations after protocol changes.
Bundle content-addressed Chord facet entries, distribute server-selected presentation artifacts during the handshake, and reload Session and TUI generations through /reload.
