Ask Rubber Duck vs PAPI: Persistent Adaptive Project Intelligence
Ask Rubber Duck is no longer listed on any marketplace we read: these are its last known data, as of 2026‑10‑20.
Ask Rubber Duck is a plugin bundle for AI coding tools published by askrubberduck. No marketplace we read lists it any more. PAPI: Persistent Adaptive Project Intelligence is an MCP server published by getpapi. Marketplaces we read that list it: 2 (Official MCP Registry, Community GitHub marketplaces). As of our marketplace pass on 2026-10-20. A plugin in this pair is no longer listed on any marketplace we read, so search engines are asked not to index the page.
Where each is published
| Marketplace |  PAPI: Persistent Adaptive Project Intelligence | |
|---|---|---|
| Community marketplace askrubberduck/skills | Removed on 2026-10-20 Version: 3.16.7 Forks (GitHub): 0 Stars (GitHub): 5 Not marked · First seen |
Not listed |
| Official MCP Registry | Not listed | Listed Version: 0.402.157 Downloads/month (npm): 1 274 Downloads/week (npm): 106 Forks (GitHub): 0 Stars (GitHub): 11 Not marked · First seen |
Each figure is the marketplace's own and is never added up across marketplaces. A marketplace that publishes no figure shows none: no number is not zero.
The facts side by side
| Fact | Ask Rubber Duckno longer listed · | PAPI: Persistent Adaptive Project Intelligence |
|---|---|---|
| Marketplaces that list it (differs) | 0 | 2 |
| Stars (GitHub) (differs) | 5 | 11 |
| Forks (GitHub) | 0 | 0 |
| Last release (differs) | Not published | 2026-10-15 |
| Where it runs (differs) | Installs as a plugin bundle | Remote server (mcp.getpapi.ai/mcp) |
| Transport (differs) | Not stated | Streamable HTTP |
| Tools it declares | Not published | Not published |
| Environment variables it asks for | Not published | Not published |
| Parts of the bundle (differs) | 20 | 15 |
| Licence | MIT | MIT |
| Repository (differs) | github.com/askrubberduck/skills | github.com/getpapi/papi |
| Changes in the last 7 days (differs) | 6 | 4 |
| First seen (differs) | 2026-10-15 | 2026-10-11 |
| Endpoint at the last check (differs) | no remote endpoint we check | Responded 4 days ago, requires a key |
Lines where the two differ have a tinted background and bold values. No value is marked better or worse: a plugin no marketplace lists any more is shown with its last known data, which we do not rank against current figures.
What to use instead of Ask Rubber Duck
Plugins still listed whose own names, descriptions, tools and skills are closest in meaning to it. Comparable, not endorsed.
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Restates the problem in its own words and lists its assumptions before it starts work.
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rubber-duck is a Socratic thinking partner for Claude Code. Inspired by the classic rubber duck debugging technique—but with a duck that actually talks back—it helps you think…
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BDD-first engineering skills forked from mattpocock/skills (synced 2026-09-23)
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Context-Driven Development: draft specs and plans before implementation. Structured workflows for features and fixes.
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Context-Driven Development: draft specs and plans before implementation. Structured workflows for features and fixes.
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Verification-first engineering toolkit — 15 skills around a 5-phase spine (Investigate → Design → Implement → Verify → Ship), 8 specialist agents, interactive setup wizard…
What each says it does
Ask Rubber Duck
Make the work prove itself. Challenge the goal, cut the clutter, and check what actually happened.
PAPI: Persistent Adaptive Project Intelligence
Adaptive plan/build/review cycles for AI coding assistants, persisted across sessions.
How to run each
Ask Rubber Duck
No data for an automatic command: what its marketplaces declare does not say unambiguously how to connect it.
PAPI: Persistent Adaptive Project Intelligence As a remote MCP server
claude mcp add --transport http papi https://mcp.getpapi.ai/mcpCommands built only from what the marketplaces declare; the full set for every client is on each card.
Only PAPI: Persistent Adaptive Project Intelligence has a remote endpoint we check. How we check endpoints
Tools each declares
Neither one's marketplaces publish a list of tools, so there is nothing to compare.
Settings each asks for
Neither one's marketplaces publish the settings it asks for.
What it can do: Ask Rubber Duck · What it can do: PAPI: Persistent Adaptive Project Intelligence · Compare two other plugins
Data comes from public marketplace files in GitHub repositories of their authors. Data comes from the Official MCP Registry (registry.modelcontextprotocol.io), CC0 1.0. Figures come from our own regular passes over the marketplaces, last read on . We publish no contact details for plugin publishers.