Anthropic task name responses can include valid JSON followed by a
closing fence or extra text, which made `json.Unmarshal` fail with
trailing-character errors and forced fallback naming.
This updates task name JSON extraction to accept the first JSON value
after optional fences and adds regression coverage for fenced and bare
JSON with trailing content.
- Adds `extractJSON()` to strip markdown code fences before JSON parsing and wire into the `json.Unmarshal` call in `generateFromAnthropic`.
- Accepts variadic `RequestOption` in `generateFromAnthropic` so tests can inject a mock Anthropic server via `WithBaseURL`.
- Adds table-driven cases covering bare JSON, fenced with/without language tag, surrounding whitespace, and multiline JSON.
- Adds end-to-end cases using `httptest.NewServer` to serve fake Anthropic SSE streams with bare and fenced responses.
Fixes https://github.com/coder/coder/issues/22375
Updates `stringutil.Truncate` to properly handle multi-byte UTF-8
characters.
Adds tests for multi-byte truncation with word boundary.
Created by Mux using Opus 4.6
Claude 3.5 Haiku (`claude-3-5-haiku-20241022`) was retired by Anthropic
on February 19th, 2026. Requests to this model now return errors.
Switch to Claude Haiku 4.5 (`claude-haiku-4-5`), which is the
[recommended
replacement](https://docs.anthropic.com/en/docs/resources/model-deprecations).
---
One-line change in `coderd/taskname/taskname.go` L25:
```diff
- defaultModel = anthropic.ModelClaude3_5HaikuLatest
+ defaultModel = anthropic.ModelClaudeHaiku4_5
```
Co-authored-by: blink-so[bot] <211532188+blink-so[bot]@users.noreply.github.com>
Replace the external moby/moby/pkg/namesgenerator dependency with an
internal implementation using gofakeit/v7. The moby package has ~25k
unique name combinations, and with its retry parameter only adds a
random digit 0-9, giving ~250k possibilities. In parallel tests, this
has led to collisions (flakes).
The new internal API at coderd/util/namesgenerator eliminates the
external dependnecy and offers functions with explicit uniqueness
guarantees. This PR also consolidates fragmented name generation in a
few places to use the new package.
| Old (moby/moby) | New |
|-------------------------------------|------------------------|
| namesgenerator.GetRandomName(0) | NameWith("_") |
| namesgenerator.GetRandomName(>0) | NameDigitWith("_") |
| testutil.GetRandomName(t) | UniqueName() |
| testutil.GetRandomNameHyphenated(t) | UniqueNameWith("-") |
namesgenerator package API:
- NameWith(delim): random name, not unique
- NameDigitWith(delim): random name with 1-9 suffix, not unique
- UniqueName(): guaranteed unique via atomic counter
- UniqueNameWith(delim): unique with custom delimiter
Names continue to be docker style `[adjective][delim][surname]`. Unique
names are truncated to 32 characters (preserving the numeric suffix) to
fit common name length limits in Coder.
Related test flakes:
https://github.com/coder/internal/issues/1212https://github.com/coder/internal/issues/118https://github.com/coder/internal/issues/1068
Fixes all our Go file imports to match the preferred spec that we've _mostly_ been using. For example:
```
import (
"context"
"time"
"github.com/prometheus/client_golang/prometheus"
"golang.org/x/xerrors"
"gopkg.in/natefinch/lumberjack.v2"
"cdr.dev/slog/v3"
"github.com/coder/coder/v2/codersdk/agentsdk"
"github.com/coder/serpent"
)
```
3 groups: standard library, 3rd partly libs, Coder libs.
This PR makes the change across the codebase. The PR in the stack above modifies our formatting to maintain this state of affairs, and is a separate PR so it's possible to review that one in detail.
Upgrades to slog v3 which includes a small, but backward incompatible API change to the acceptible call arguments when logging. This change allows us to verify via compile time type checking that arguments are correct and won't cause a panic, as was possible in slog v1, which this replaces (v2 was tagged but never used in coder/coder).
It also updates dependencies that also use slog and were updated.
I've left the `aibridge` dependency as a commit SHA, under the assumption that the team there (cc @pawbana @dannykopping ) will tag and update the dependency soon and on their own schedule.
Other dependencies, I pushed new tags.
Previously, when a user created a task with a URL-only prompt (e.g.,
`Let's work on https://github.com/coder/coder/issues/21138`), the LLM
would hallucinate what the URL content might be about - generating names
like "Fix GitHub Actions workflow issue" when the actual issue was
unrelated.
Add examples to the task naming system prompt showing expected behavior
for GitHub issue and PR URLs, teaching the model to use visible URL
parts (repo name, issue/PR number) rather than guessing content.
Co-authored-by: blink-so[bot] <211532188+blink-so[bot]@users.noreply.github.com>
## Problem
Tasks currently only expose a machine-friendly name field (e.g.
`task-python-debug-a1b2`), but this value is primarily an identifier
rather than a clean, descriptive label. We need a separate
display-friendly name for use in the UI.
This PR introduces a new `display_name` field and updates the task-name
generation flow. The Claude system prompt was updated to return valid
JSON with both `name` and `display_name`. The name generation logic
follows a fallback chain (Anthropic > prompt sanitization > random
fallback). To make task names more closely resemble their display names,
the legacy `task-` prefix has been removed. For context, PR
https://github.com/coder/coder/pull/20834 introduced a small Task icon
to the workspace list to help identify workspaces associated to tasks.
## Changes
- Database migration: Added `display_name` column to tasks table
- Updated system prompt to generate both task name and display name as
valid JSON
- Task name generation now follows a fallback chain: Anthropic > prompt
sanitization > random fallback
- Removed `task-` prefix from task names to allow more descriptive names
- Note: PR https://github.com/coder/coder/pull/20834 adds a Task icon to
workspaces in the workspace list to distinguish task-created workspaces
**Note:** UI changes will be addressed in a follow-up PR
Related to: https://github.com/coder/coder/issues/20801
The previous logic verified a generated name was valid, _and then
appended a suffix to it_. This was flawed as it would allow a 32
character name, and then append an extra 5 characters to it.
Instead we now append the suffix _and then_ verify it is valid.
Closes https://github.com/coder/coder/issues/18159
If an Anthropic API key is available, we call out to Claude to generate
a task name based on the user-provided prompt instead of our random name
generator.
Max Schwenk