Mink Quickstart

chimera mink Quickstart

What this is

chimera mink is a coding-agent REPL built on Chimera’s existing AgentLoop, LoopConfig, tool registry, permissions, and session primitives. Its default backend is Ollama with glm-5.1:cloud (or kimi-k2.6:cloud for the walking-skeleton example). The runtime is a single-process script that drives a real ReAct loop end-to-end with streamed text + tool calls, the chimera mink subcommand and slash-command surface, drop-in settings.json ingest (permissions + hooks), and a rich markdown TUI. Run chimera mink --help-long to see verbose per-flag descriptions; --help itself stays under 50 lines for scannability.

Provider choice

Mink talks to LLMs through Chimera’s standard provider stack: Ollama (local + cloud tags), Anthropic, OpenAI, Google, and any OpenAI- or Anthropic-compatible endpoint. The full matrix — auth env vars, latency notes, tool-call quirks, and known limits per backend — lives in providers.md.

For evaluation, see benchmarks.md: every adapter under chimera/eval/benchmarks/ (SWE-bench, HumanEval, SWT-Bench, SWE-PolyBench, FeatureBench, Cline Bench, DPAI Arena, tau-bench, Context-Bench, HumanEval+, MBPP, LiveCodeBench, MATH-500/AIMO, Custom), its status, and how to drive it through the harness.

Quick recommendation: Ollama with glm-5.1:cloud is the friendliest path (cheap, fast, good tool calling). The built-in mink default is kimi-k2.6:cloud for parity with the original walking skeleton; pass --model or set CHIMERA_MINK_MODEL to switch. Anthropic API works without extra setup too: chimera mink --model claude-sonnet-4-6 after export ANTHROPIC_API_KEY=....

Model selection

A short reference of working tags per models.md:

Backend	Tag	Notes
Ollama Cloud	glm-5.1:cloud	Recommended default; fast, cheap, native tool calls
Ollama Cloud	kimi-k2.6:cloud	Built-in mink default; long context
Ollama local	qwen3:32b	Local fallback; 131k context, runs on a 24 GB GPU
Anthropic	claude-sonnet-4-6	Strongest tool calling; needs ANTHROPIC_API_KEY
OpenAI	gpt-4o	Needs OPENAI_API_KEY; route via OpenAI-compat

--model always wins over CHIMERA_MINK_MODEL; CHIMERA_MINK_MODEL always wins over the built-in default. So a CI env can pin the tag once and ad-hoc invocations can still override:

export CHIMERA_MINK_MODEL=glm-5.1:cloud
chimera mink -p "summarize this repo"                       # uses glm-5.1:cloud
chimera mink --model claude-sonnet-4-6 -p "review diff"     # overrides to claude

Prerequisites

• Python 3.11+
• uv
• Ollama 0.7 or newer (streaming + tool calls landed in PR #10415, May 2025)
• An Ollama account for cloud tags

uv --version                          # >= 0.4
ollama --version                      # >= 0.7
uv sync --extra dev                   # core deps

The Ollama provider lives in chimera/providers/ollama.py and is part of the core install — no extras required.

Provision the model

ollama signin                         # required for any :cloud tag
ollama run kimi-k2.6:cloud            # warm the cloud endpoint; Ctrl-D to exit
ollama pull qwen3:32b                 # local fallback (parallel tools, 128k ctx)

Notes:

• ollama pull kimi-k2.6 does not work. K2.6 is 1T params (~600 GB at Q4); Ollama exposes it only as a cloud tag. See report 21 — Kimi K2.6 §8.
• The first ollama run kimi-k2.6:cloud after sign-in does an auth handshake; subsequent calls are warm.
• qwen3:32b is the recommended local fallback: native tool calls, 131072 context, runs on a 24 GB GPU at usable speed.

If your Ollama daemon is on another host, point the provider at it:

export OLLAMA_HOST=http://gpu-box.lan:11434

Run the walking skeleton

uv run python examples/mink_walking_skeleton.py "list files then read README.md"

Expected output shape:

[warn] kimi-k2.6:cloud unavailable; falling back to qwen3:32b      # only if fallback engaged (stderr)
I'll list the repo first, then read the README.

▶ Bash$ ls
CHANGELOG.md  CLAUDE.md  README.md  chimera/  docs/  examples/  tests/

▶ Read(README.md)
# Chimera
A composable coding agent framework
...

The repo root has a README pitching Chimera as a composable coding agent framework.

--- DONE --- steps=3 ok=True

Streaming text appears as it arrives. Tool calls render as ▶ <Tool>(<args>) lines followed by the tool result. The trailing --- DONE --- line reports loop steps and success. Ctrl-C cancels the in-flight stream within ~1 second and exits 130.

Env vars

Variable	Default	Meaning
CHIMERA_MINK_MODEL	kimi-k2.6:cloud	Primary model tag passed to Ollama. Any tool-capable Ollama tag works.
CHIMERA_MINK_FALLBACK	qwen3:32b	Used if the primary model errors at provider construction (auth, missing tag, network).
OLLAMA_HOST	http://localhost:11434	Ollama daemon URL. Set when the daemon runs on another host.
CHIMERA_MINK_SETTINGS_PATH	(unset)	Override .claude/settings.json discovery (see parity-matrix.md “How to use”).
CHIMERA_RICH_TUI	(unset)	When =1, opt the chimera code REPL into the rich MinkStreamHandler too.
NO_COLOR	(unset)	When set to any value, force the plain handler (synonym for --no-color).
CHIMERA_SSH_TEST_HOST	(unset)	Live-test target for --remote; needed only by the SSH integration tests.

What works in M0

• Streaming assistant text via /api/chat?stream=true (mid-stream NDJSON chunks)
• Native tool calls accumulated from done:false chunks: Bash, Read, Write, Edit, Grep (search), Glob (list_files), TodoWrite
• Ctrl-C cancellation through CancellationToken — the walking skeleton creates a fresh token locally and relies on the natural KeyboardInterrupt bubble-up at exit. The “10 s thread join” graceful path documented in CLAUDE.md is wired only in the interactive REPL (chimera mink without -p), not in examples/mink_walking_skeleton.py.
• Automatic fallback from CHIMERA_MINK_MODEL to CHIMERA_MINK_FALLBACK on provider construction failure
• num_ctx per-request (262144 for Kimi, 131072 for Qwen3) and keep_alive: "60m" so the cloud endpoint stays warm across ReAct steps
• think: true for Kimi, with reasoning_content preserved across tool turns

What does NOT work yet (M1+)

NOTE (M7, 2026-04-25): every bullet in this section shipped in v0.3.0 or v0.4.0. Kept as a historical milestone log; see parity-matrix.md for the current shipped surface (subsystems 1–20).

• The chimera mink subcommand — M0 ships only the example script
• Rich TUI (markdown rendering, spinner, collapsed thinking blocks, tool-block expand/collapse) — M1
• Slash commands beyond Ctrl-D / process exit — M1 adds /status, /doctor, /permissions, /hooks, /mcp, /resume, /cost, /compact, /sandbox, /subagent, /plugin, /review, /config
• Drop-in .claude/settings.json loader and permissions.allow/ask/deny rule grammar — M2
• PreToolUse hook updatedInput mutation — M2
• MCP servers and mcp__server__tool namespacing — M3
• Subagents via Task tool and .claude/agents/*.md — M3
• /resume <session_id> and /compact as in-CLI commands — M4

v0.4.0 surface added since the M0 milestone

The flag matrix exposed by chimera mink --help today (additive to the M0/M1 set above):

Flag / subcommand	Meaning
--remote ssh://user@host[:port][/path]	Route file/bash tools through SSHEnvironment (scaffold; see remote.md).
--allowed-tools Bash,Read,...	Comma-separated allowlist. Unknown name → exit 2 with valid set on stderr.
--tool-timeout SECONDS	Per-tool-call asyncio.wait_for ceiling.
--no-rich / --no-color	Force the plain handler; auto-disabled when stdout is not a TTY or NO_COLOR is set.
--no-save	Skip persistence to ~/.chimera/eventlog/mink-<id>/.
--run-id <id>	Override the auto-generated run id (reproducible test fixtures).
--version	Print chimera mink <version> and exit.
mink runs list / show / share	Inspect persisted runs; share --sink {file,gist,base64} exports a tarball (#129).
mink agents list / show <name>	List or describe agents reachable from the project > user > built-in chain.

Known limits of Kimi K2.6 :cloud

Cited from report 21 — Kimi K2.6:

• Weights stay on Moonshot/Ollama infrastructure. Cloud-only tag. Prompts and tool inputs are visible to the cloud operator. If that is unacceptable, self-host K2.6 with vLLM/SGLang/KTransformers from the HF safetensors (~600 GB disk, workstation hardware) and point OLLAMA_HOST at a compatible bridge — or pick a local model.
• format (JSON-schema grammar) is not honored on :cloud. Cloud-served Kimi ignores the format field. Use prompt-level JSON instructions plus temperature: 0 for structured outputs. Local models (qwen3:32b) honor format normally.
• Vision is weak. BabyVision 39.8% — the lowest relative score on Moonshot’s own card. Strong text/coding model, but do not route image-heavy tasks to it.
• License is modified MIT. Standard MIT below thresholds. If your product crosses >100M MAU or >$20M/month revenue, you must display “Kimi K2” attribution in your UI. No royalties.
• Reasoning persistence is mandatory. In multi-turn tool loops the server errors if reasoning_content is dropped from history. The provider preserves it; do not strip thinking traces in custom compaction.
• tool_choice: "required" is forbidden when think: true. Use auto or none.

Persistence and opt-out (audit M-11)

Every chimera mink -p invocation persists the user prompt, agent result, and a summary.json to ~/.chimera/eventlog/mink-<id>/ by default. This is local-only — Chimera never phones home — but it is on disk in plaintext and can include sensitive prompts and tool args.

To disable persistence for a single run, pass --no-save:

chimera mink -p "explain this repo" --no-save

To inspect what was saved, list the eventlog directory or use the runs subcommand (see below):

ls ~/.chimera/eventlog/
cat ~/.chimera/eventlog/mink-<id>/summary.json

To purge old runs, simply delete the directory:

rm -rf ~/.chimera/eventlog/mink-*

There is no remote telemetry, error reporting, or analytics in the mink CLI; the only network egress is the LLM provider call you explicitly configured (Ollama, Anthropic, OpenAI, …).

Inspecting your runs

chimera mink runs list walks ~/.chimera/eventlog/ and renders a fixed-column table, newest first:

$ chimera mink runs list
RUN_ID                                DATE              MODEL              OK   STEPS  COST   PROMPT
mink-20260424T051001-71032a5e         2026-04-24 05:10  glm-5.1:cloud      ✓    4      $0.00  list files then read README.md
mink-20260423T191222-9f0ab412         2026-04-23 19:12  kimi-k2.6:cloud    ✓    3      $0.00  explain this repo
mink-20260423T184005-2d11c7e0         2026-04-23 18:40  qwen3:32b          ✗    2      $0.00  generate tests for foo.py

Filter / cap the table:

chimera mink runs list --limit 5
chimera mink runs list --runs-model glm-5.1:cloud
chimera mink runs list --success-only
chimera mink runs list --failed-only

chimera mink runs show <id> prints summary metadata plus the event transcript. Use --no-events for a one-pane summary, or --full to force the full transcript when piping through a pager:

chimera mink runs show mink-20260424T051001-71032a5e
chimera mink runs show mink-20260424T051001-71032a5e --no-events

Listing available agent presets

Mink resolves --agent <name> through a project > user > built-in chain: <cwd>/.claude/agents/*.md, ~/.claude/agents/*.md, and the built-in registry (build, explore, general, plan, review).

$ chimera mink agents list
NAME       SOURCE   MODEL              TOOLS                              DESCRIPTION
build      builtin  -                  read,write,edit,bash,test,...      Build features end-to-end
explore    builtin  -                  read,search,list_files             Read-only exploration
general    builtin  -                  (default)                          Default coding agent
plan       builtin  -                  read,search                        Plan-only, no edits
review     builtin  -                  read,search,bash                   Code review

$ chimera mink agents show explore

Pipe-friendly mode

Mink auto-detects pipes — when stdout is not a TTY (e.g. you’re piping into tee, grep, or a CI log) the rich Markdown handler turns off and you get plain text. Force it explicitly with --no-color (or its synonym --no-rich); $NO_COLOR is honored too.

chimera mink -p "summarize" --no-color | tee mink.log
chimera mink -p "ship it" --output-format json
chimera mink -p "ship it" --output-format stream-json   # one JSON line per LoopEvent

--output-format json emits a single result object on exit; stream-json emits one JSON line per LoopEvent for downstream pipelines.

Where things are persisted

Path	What
~/.chimera/eventlog/mink-<id>/summary.json	Per-run metadata (model, cost, steps, success, prompt)
~/.chimera/eventlog/mink-<id>/event-*.json	Full event stream for runs show
~/.chimera/sessions/<workdir-hash>.jsonl	Interactive REPL SessionTree log (used by --resume)
~/.chimera/mcp.json, <cwd>/.mcp.json	MCP server declarations loaded by _load_mcp_tools
<cwd>/.claude/settings.json, ~/.claude/settings.json	Permissions + hooks (CC-format settings)

Everything is local-only and plaintext. No remote telemetry.

Permission mode (5-mode standard)

Mink’s --permission-mode flag now accepts both the historical ecosystem-parity choices and the cross-CLI five-mode standard (shared with chimera ferret and chimera badger):

Mode	Reads	Edits	Bash / Git	Notes
read-only	allow	deny	deny	New name for plan.
suggest	allow	ask	ask	New name for default.
auto	allow	allow	ask	New name for acceptEdits.
yolo	allow	allow	allow	New name for bypassPermissions.
strict	ask	ask	ask	Confirm every tool call.

Both spelling families work — --permission-mode plan and --permission-mode read-only produce identical policies. Use whichever is easier to remember. The 5-mode names are recommended for new scripts because they match the flag values you would type at chimera ferret and chimera badger. See permissions.md for the full mapping table and settings.md for the matching settings-file keys.

What to do if it doesn’t work

If chimera mink errors at startup or hangs on the first call, walk the troubleshooting section in providers.md — it covers Ollama auth handshakes, missing tool capability, num_ctx defaults, the /v1 vs /api/chat endpoint trap, and the equivalent Anthropic / OpenAI / Google paths.

Troubleshooting

ollama signin fails or hangs. Check that ollama --version is 0.7+. Older builds shipped before cloud auth. Re-run after upgrade. If the browser flow doesn’t open, run ollama signin --help for the device-code flow.

model 'kimi-k2.6:cloud' not found. You did not sign in, or you typed kimi-k2.6 without the :cloud suffix. Re-run ollama signin, then ollama run kimi-k2.6:cloud once to confirm. The local pull (ollama pull kimi-k2.6) is not supported.

First call takes 10–30 seconds. Cold start on the cloud endpoint. Subsequent calls within 60 minutes reuse the warm instance because the provider sets keep_alive: "60m".

tool_calls is always empty / model never invokes a tool. Make sure the provider is hitting /api/chat, not /v1/chat/completions. The OpenAI-compat layer silently drops tool_calls when streaming (Ollama issues #9632, #12557). The Chimera provider uses the native endpoint by default; if you set a custom base_url, it must end in the host root, not /v1.

Streaming text appears but tool calls never fire on a local model. Confirm the model has the tools capability. Check ollama show <model> — Capabilities: tools must be listed. qwen3:32b, llama3.1:70b-instruct, and kimi-k2.6:cloud all have it; many community quants do not.

num_ctx defaults to 4096 and the agent forgets the system prompt. The provider should be passing num_ctx per request. If you see prompt_eval_count capped near 4096, the request is missing options.num_ctx. Verify with OLLAMA_DEBUG=1 ollama serve and inspect the incoming JSON.

Tool result message rejected. Tool result messages must use {"role": "tool", "tool_name": "<name>", "content": "<string>"}. The provider builds this; if you patched _convert_messages(), ensure tool_name is present and content is a string (stringify JSON results).