Cheaplane
PYPI · CHEAPLANE
Offload grunt work from your premium agent to cheap models — auto-routing and billing isolation.
Available components
Last scanned (2 hours ago)
Scores higher than 96% of PyPI servers
Category AI and Machine Learning
How this component scores in each security and reliability category. Every signal is checked automatically from public evidence about the published package, including repeated runs of it in an isolated sandbox, and we only credit what we can confirm. How we score → Why this is hard to score →
Supply Chain Security100
- No malware found by supply-chain analysis.Pass
- No known CVEs affecting this package version or its production dependencies.Pass
- Runs hatchling.build at install time, a recognised build step with no custom scripting around it. View diagnostics → Pass
- 1 of 28 dependencies flagged as unhealthy. View diagnostics → Partial
Provenance & Transparency97
- Source repository is publicly reachable at the declared URL. View diagnostics → Pass
- Cryptographically verified build provenance (signed, bound to millennialdreamer/cheaplane). View diagnostics → Pass
- Clear OSI-approved license (MIT).Pass
- Actively maintained (last published 61 days ago).Pass
- Disclosure check failed: no security disclosure policy was found in the source repository. See how to fix → Fail
Schema Quality & AI Usability75
- AI-judged instruction clarity (good).Pass
- Tool/resource definitions use about 358 tokens (~119/item across 3 items; 3 tools + 0 resources), lean.Pass
- Usage-examples check failed: none of the tools include examples. See how to fix → Fail
Stability & Change Management100
- No destabilizing schema changes in the last 30 days.Pass
Tool Coverage71
- 100% of tools have a non-trivial description (not blank, and not just the tool's name).Pass
- 0% of tool parameters carry a description.Fail
- Structured output schemas are declared (100% of tools); any adoption earns full credit.Pass
Tool Safety100
- No prompt-injection markers were found in the server instructions, tool names or descriptions we captured.Pass
- We read all 3 captured tool definition(s), and no name or description among them implies an irreversible operation.Pass
- An AI judge read all 3 captured unit(s) of tool text and found none that tries to manipulate the model reading it.Pass
Capabilities100
- Implements a current MCP spec version (2026-07-28).Pass
Every change we have recorded for this component, newest first. Security-relevant changes are always shown. ▲ marks a change for the better, ▼ a change for the worse; unmarked changes are neutral.
- 17 Oct 26 +3
- Stability: 0.83 → pass security
- 15 Oct 26 −3
- Stability: pass → 0.80 functional
- 14 Oct 26 +1
- Stability: 0.97 → pass security
- 12 Oct 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 90 to 93. That category is still filling its 30-day observation window: 27 days of observed history at the previous scan, 28 at this one. The score rises as the window fills, whether or not the server changes.
- 3 Oct 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 83 to 87. That category is still filling its 30-day observation window: 25 days of observed history at the previous scan, 26 at this one. The score rises as the window fills, whether or not the server changes.
- 1 Oct 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 77 to 80. That category is still filling its 30-day observation window: 23 days of observed history at the previous scan, 24 at this one. The score rises as the window fills, whether or not the server changes.
- 30 Sept 26 −4
- Stability: pass → 0.77 functional
- 29 Sept 26 +1
- Stability: 0.97 → pass security
Diagnostic detail from the automated scan of this channel: what the scanner observed at each step, so you can see exactly where a check passed or failed. It is informational only and never changes the trust score.
Captured 17 Oct 2026 · Analysed pypi/cheaplane@0.2.1
Provenance Verified
A signed build attestation was found and verified, binding this exact artifact to the source repository it claims to come from.
| Result | Verified |
|---|---|
| Ecosystem | pypi |
| Reason | Verified |
| Discovered via | Registry attestation endpoint |
| Source repo | millennialdreamer/cheaplane |
| Certificate issuer | https://token.actions.githubusercontent.com |
| Certificate SAN | https://github.com/millennialdreamer/cheaplane/.github/workflows/publish.yml@refs/tags/v0.2.1 |
| Rekor log index | 2489329629 |
| Predicate type | PyPI publish attestation https://docs.pypi.org/attestations/publish/v1 |
| Subject digest | sha256:4191e66bc30300102d288e4fd0f3d34d48095b1fdd553c3dad3a332ef6180f5a |
Background: How many MCP packages publish verified provenance →
Install scripts 1 script
| Hook | Tier | Command |
|---|---|---|
| build_backend | allowlisted | hatchling.build |
Background: Why install scripts are a supply-chain risk →
Dependencies 28 packages
| Packages resolved | 28 |
|---|---|
| No linked repository | 1 |
| Tree resolution | Complete |
Background: SBOMs and build attestations, explained →
The tools this component advertises to a client, with an estimated token cost for each. Expand a tool to see its parameters and schema. The per-tool counts are indicative and are not scored directly; the schema's total context footprint is one signal in Schema Quality & AI Usability. A tool's description is untrusted text the model reads on every call, which is what makes this list a security surface and not just an inventory: how tool poisoning works →
delegate ~313
Offload a self-contained subtask to a cheaper model and return its output. WHEN TO USE: hand off *replaceable grunt work* to save your premium tokens — boilerplate code, small bug fixes, formatting, translation, reading/summarizing long documents, drafting routine copy. Do NOT delegate judgment work (planning, architecture, final review, talking to the user) — keep that for yourself. The delegated model sees ONLY the `task` string and has NO access to this conversation. So make `task` fully self-contained (include all needed context). Args: task: Complete, self-contained instruction for the cheap model. model: "auto" (default) routes by task — code→deepseek, long docs→kimi, Chinese→qwen, multi-step→mimo, quick chores→flash. Or force an alias (deepseek/mimo/flash/kimi/qwen) or a raw proxy model_name. max_tokens: Output cap. Default 4000 (kept large so reasoning models that spend budget on hidden thinking still return non-empty text). Note: a call typically takes ~10-60s (longer for big inputs) and blocks until the cheap model returns, so prefer one focused task per call. Returns: The model's text output, or a string starting with "[delegate-error]" on failure.
| Name | Type | Req | Description |
|---|---|---|---|
| max_tokens | integer | – | – |
| model | string | – | – |
| task | string | yes | – |
| Name | Type | Req | Description |
|---|---|---|---|
| result | string | yes | – |
No examples provided.
list_models ~21
List the model aliases available to delegate(), with their best use.
Input schema present but exposes no named parameters.
| Name | Type | Req | Description |
|---|---|---|---|
| result | string | yes | – |
No examples provided.
savings ~24
Show what delegating has kept off your premium quota (estimates, list prices).
Input schema present but exposes no named parameters.
| Name | Type | Req | Description |
|---|---|---|---|
| result | string | yes | – |
No examples provided.
How do I install the Cheaplane MCP server?
Cheaplane runs locally as a PyPI package, launched with uvx cheaplane. Ready-made configuration for Claude, Cursor, VS Code, Codex and 5 more is on this page, copied from each client's own documentation.
pypi · cheaplane
claude mcp add millennialdreamer-cheaplane -- uvx cheaplane
What is the Cheaplane MCP server?
Cheaplane is an MCP server listed in the public MCP registry as io.github.millennialdreamer/cheaplane. Offload grunt work from your premium agent to cheap models, auto-routing and billing isolation. This page covers its PyPI package (cheaplane).
Is the Cheaplane MCP server safe to use?
Cheaplane scores 93 out of 100 on VerifyMCP. We found no known CVEs affecting it as of 17 October 2026. Its build provenance is signed and verified. That is a record of what we were able to check automatically, not an endorsement. The category breakdown on this page shows every signal behind the number, including the ones we could not confirm.
What tools does the Cheaplane MCP server expose?
Cheaplane exposes 3 tools: delegate, savings, list_models. Their descriptions and schemas cost roughly 358 tokens of context every time the server is loaded.
Is the Cheaplane MCP server still maintained?
Cheaplane is still listed as active in the MCP registry. We last reached this channel on 17 October 2026. Those dates come from our own scans of the registry and the channel itself, not from anything the publisher announced.
What licence is the Cheaplane MCP server under?
Cheaplane declares the MIT licence, which is OSI-approved. That covers the source only, and says nothing about the cost of any service it calls.