Add a Nix flake that builds Pi from the checkout on aarch64/x86_64 Linux
and macOS. The build is offline: provider model data is hydrated from a
pi.dev model catalog revision pinned in nix/model-catalog.json, and the
runtime dependency tree comes from packages/coding-agent/install-lock with
internal packages built from source.
The Nix workflow keeps the catalog pin current on main, builds release
tags on all systems, and fast-forwards the stable branch to each release
that builds. The release script refreshes the pin before tagging.
text(), image(), and console.* fail the script with a RangeError past
MAX_OUTPUT_CHARS (16 Mi) characters or MAX_OUTPUT_ITEMS (100000) items.
closes#10283
When port 1455 was held by another pending login (another pi session
or the Codex CLI), login fell back to a paste prompt, but the browser
callback reached the other listener, which rejected it with "OAuth
state mismatch". Fail before opening the browser with a port-in-use
error instead.
fixes#10265
npm installs no longer pin transitive dependencies. Pinned installs come
from the pi.dev installer lockfile. pi update on global npm installs now
recommends migrating with the installer.
closes#5653
List @cf/cloudflare/clef and @cf/cloudflare/clef-flash under
cloudflare-workers-ai in the classifier models table and add changelog
entries crediting #10316 and #10322.
The gateway's /anthropic passthrough forwards the model ID to Anthropic
unchanged. models.dev lists the gateway's Claude models with dotted
versions (claude-opus-5.5), which Anthropic rejects with a 404. Convert
dots to dashes (claude-opus-5-5) when generating the catalog.
Adds oauth.clientRegistration: "cimd", which identifies pi with its Client ID Metadata Document on pi.dev instead of dynamic client registration, matching Codex: a shared document when the authorization server sends iss, otherwise a document and callback path specific to the MCP server. Authorization responses are only accepted on the exact redirect URI. Dynamic client registration stays the default.
closes#10302
A trailing comma in --models produced an empty pattern, which
matched every model by substring and added an extra model to
the model cycle.
fixes#10334
Switch native Anthropic tool changes to the inline-tools-2026-09-15 beta. Later tools are defined by value in tool_addition blocks, so the top-level tool list stays fixed and same-name redefinitions no longer fall back to resending the full tool list. The deferred placeholder is kept.
Upgrade @anthropic-ai/sdk to 0.129.0 and deprecate hasToolRedefinitions().
minimatch 10.2.6 (latest) still allows brace-expansion ^5.0.8, so pin the
patched version directly to keep the shrinkwrap off vulnerable releases.
closes#10288
Login and MCP sign-in screens show a copy hint and copy the URL to the
clipboard (OSC 52 over SSH). /mcp login in the TUI now uses the MCP
sign-in screen instead of a notification.
Replaces the 3D pi logo easter egg on header logo click. Armin's bitmap is
built from one cube per pixel, using the theme accent color. Regular mode
keeps the inline Armin art.
Foreign tool call ids are normalized to fc_*, but grammar tools such as
codemode replay as custom_tool_call, which requires ctc_* ids. This broke
switching OpenAI models through Radius after a codemode call
(earendil-works/radius#115).
Rename docs/pico-v5.md to docs/spec.md and link the design documents on GitHub
instead of shipping docs/. Add a default condition to every export so require()
of the ESM package works. Reset the changelog to the initial release.
A copy of the experimental durable coding agent with the coding tools and pi's
coding prompt replaced by a vacation planner: a search tool that is safe to
rerun, and a background research subagent that reports back as a new message.
Move the codemode script reference, including the models API, into
docs/codemode.md and keep only one line per global in the tool
description. Declared tools get a one-line note on how scripts call them,
and the codemode system prompt guidance and MCP server section are shorter.
With the default tools a GPT-5.6 request drops from about 5,300 to 3,300
tokens.
Errors now point the way back: unknown tools and models members name close
matches, models.classify() and models.generateImages() validate their
arguments, unknown or mistyped models point to getAvailableOfType(),
store() overflow explains the store, and unshown generated images get a note.
Scripts run image models with the session's credentials, like
models.classify(). Results are base64 image blocks that image() attaches
to the codemode result; usage counts toward the session cost.
The top-level /login menu offers Sign in with Radius with its status,
with an animated shimmer on the Radius row and a short Radius intro.
After a Radius sign-in it offers to configure the Radius MCP server in
the global mcp.json with auth.provider and reloads. Cancelling a login
returns to the menu it was started from. OAuth sign-ins without a
subscription are labeled as accounts.
Co-authored-by: niloc <5925270+colindaymond@users.noreply.github.com>
Session workers now host a durable Harness over a per-session sqlite storage.
The server keeps each session in <sessionDir>/<id>/ with meta.json and
session.sqlite and never opens the storage itself. Workers hold retirement
while the Harness task graph has live tasks and resume interrupted work on
open.
Transcript serves the root conversation's durable view directly, Models
follows the conversation's agent document, and AgentController maps prompt,
steer, follow-up, queue cancellation, abort, and compaction onto the root
conversation, plus waitForPrompt. navigate, nextRun, and resume are dropped
(see experimental/services/README.md TODO). The durable TUI and the worker
share harness-setup.ts.
pi-server exports its own SessionMetadata and no longer depends on
pi-agent-core. Chord accepts readonly JSON types in service contracts without
walking them, which recursive JSON types like pi-ai's made too deep.
pi-agent-core now contains only Agent, the agent loop, the proxy stream, and
their types. Removed the harness, sessions and session storage, pico3, harness
tools, compaction, skills, prompt templates, telemetry schemas, search types,
and the uuidv7 and pi-telemetry re-exports, plus the ./node, ./harness/* and
./experimental/pico3 subpath exports. Durable sessions live in
@earendil-works/pi-durable.
Also removed packages/session-backends and the experimental mini and micro
coding-agent frontends, with their scripts and build configuration.
Palette colors now keep the bell-curve falloff and are
also capped at the palette color's OKLCH chroma times that falloff.
Lightness and hue are unchanged, so contrast is unchanged.
closes#10255
The session restored its tool loadout before MCP servers reconnected, so deferred tools that tool_search had loaded were dropped. Restored tools that are not registered yet now stay pending and are activated when they register, until a setActiveTools() call deactivates a tool or the next prompt starts.
The user message's Markdown pads and colors its own background instead of
sitting in a Box that kept a second full-width copy of every line. The output
is identical.
Markdown holds its parsed tokens weakly: a token tree is about ten times its
source, and every transcript message keeps a Markdown component. The tokens
still survive bursts of re-renders such as theme previews. Markdown, Text, and
Box flatten their cached lines, which V8 otherwise keeps as trees of the
concatenated parts. A long assistant message keeps about a fifth of the heap.
Runs the pinned @modelcontextprotocol/conformance client scenarios for 2025-03-26, 2025-06-18, and 2025-11-25 against pi's MCP connection and OAuth sign-in, and fails on regressions against a committed check-level baseline.
A step-up sign-in requested only the scopes of the insufficient_scope challenge, so the new token lost the scopes granted before and other requests asked for sign-in again. Tokens now record their granted scope and step-up requests the union (SEP-2350).
--provider without --model was ignored and the default model from
another provider ran instead. It now fails with an error. Also fixes
the outdated "(default: google)" in the --help text.
closes#10236
A small local agent in src/experimental/durable: pi's model runtime, settings,
system prompt, theme, and interactive components over a durable Harness with
SQLite storage. Streaming, tools, steer and follow-up, abort, model and
thinking selection, compaction, --continue with recovery of interrupted turns,
a subagent tool with /agents to switch to and talk to subagents, and a live
/tasks panel from the task graph view. The tsconfig path for
@earendil-works/pi-durable/* resolves subpaths to source.
Package 22: runtime.now() and report() throw after the invocation ended; a
migration-only commit is published; a failed Harness.open closes without the
caller's context and rethrows the open error; ConversationWatch alias. Tests
for close joining non-cooperative code, cancelled close, queued operations at
the seal, progress calls and viewers on a paused Harness, the Chord guide, and
the spec's usage examples.
Package 23: Harness.taskGraph() and watchTaskGraph() mount every live task with
its owner edge, committed status, flags, and owned conversations, advanced from
commit publications. Example 24 prints the checkout's tree.
Close ends states and watches at its seal, joins non-cooperative code, and a
cancelled close cancels only its wait. Conversation.abort() starts scheduling.
New section 9.5 specifies Harness.taskGraph() and watchTaskGraph(). The Chord
guide uses real imports and documents shutdown order.
Empty or null optional fields in OAuth token and registration responses
(scope, refresh_token, id_token, client_secret) failed sign-in, and
expires_in: null marked tokens as expired. Also fall back to the server
origin when resource metadata has invalid URLs, skip empty scopes when
selecting the requested scope, and end pagination at an empty or null
nextCursor.
closes#10266
