# io.github.dcostenco/prism-coder (io.github.dcostenco/prism-coder@20.21.2)

> Source: <https://mcpindex.ai/server/io-github-dcostenco-prism-coder>
> Published: 2026-09-17 00:00:37+00:00

[← Index](https://mcpindex.ai/leaderboard)

# io.github.dcostenco/prism-coder

Session memory for coding agents: local-first recall, drift detection, on-device inference.

The current version, v20.21.2, was published to the official MCP registry on 2026-09-17. It is distributed as prism-mcp-server on npm, filed under Memory & RAG by this index, and declares 8 environment variables. Removals and unreachable sources are measured across every server this index tracks, contract drift across the servers that answer in consecutive snapshots; [the index's current counts](https://mcpindex.ai/stats) put this record in context.

## Using io.github.dcostenco/prism-coder in Claude, Cursor, Gemini CLI, Cline, or Zed?

MCP tool contracts can change remotely with no version bump. The mcpindex gate pins each contract and **HOLDs the call** when it drifts-before your agent acts. Zero credentials. This is not the package install for this server itself (use **Install this server** for that).

Rewrites your MCP host config so each server launches behind the gate. Inspect first: curl -fsSL https://mcpindex.ai/install.sh | less

```
uv tool install mcpindex-gate && mcpindex-config-wire
```

[method](https://mcpindex.ai/methodology)

Semantic screen found no manipulation pattern in the description. Conformance probe not yet run.

`mcpindex.integrity.description` passINFO
evidence“No suspicious instructions or data handling mentioned”via static_description

- - Semantic screen only - the deterministic conformance probe has not run on this server
- - Confidence is reported but not yet calibrated (v1)
- - Screen reads the tool description, not the live behavior
- - advisory
- - registry description only no input schema
- - screen model 8b
- - Still current: the description we screened is unchanged, re-checked against the registry
- - The registry listing (version, packages, links) changed after this screen ran - the description we assessed did not

Semantic screen: an LLM judge reads the tool description for hidden instructions (status PARTIAL). A pass means the description is not lying, not that the tool is safe: a high-capability tool with an honest description still warrants caution. The deterministic conformance probe has not been run on this server yet, so the screen here is semantic-only. Posture: advisory. Confidences are reported but not yet calibrated (calibrated=false at v1). Full verdict history is not shown on this page.

Own this server? [Screen its description →](https://mcpindex.ai/screen)

## That verdict was true at screening time (snapshot 2026-09-17).

Contracts can change after screening, with no version bump. The gate pins io.github.dcostenco/prism-coder’s tool contracts on first sight and holds any silent change before your agent acts - the check that keeps being true on Tuesday.

[See your first HOLD in 2 minutes →](https://mcpindex.ai/guides/install-the-gate-first-hold)

Related: [how to trust an MCP server](https://mcpindex.ai/guides/how-to-trust-an-mcp-server) · [screen before install](https://mcpindex.ai/guides/screen-mcp-server-before-install) · [silent contract drift](https://mcpindex.ai/guides/mcp-silent-contract-drift)

People vet a server before wiring it in. One line on your project site or docs answers that with an independent record: screening verdict, registry provenance, contract drift history. It stays current as new screens and drift events land.

```
[Independent trust record for io.github.dcostenco/prism-coder](https://mcpindex.ai/server/io-github-dcostenco-prism-coder) - screening verdict, registry provenance, and contract drift monitoring.
<a href="https://mcpindex.ai/server/io-github-dcostenco-prism-coder">Independent trust record for io.github.dcostenco/prism-coder</a> - screening verdict, registry provenance, and contract drift monitoring.
```

A live verdict badge for your README or listing. It reflects the current screen, links back here, and updates when the verdict does.

```
[![mcpindex](https://mcpindex.ai/api/v1/badge/io-github-dcostenco-prism-coder)](https://mcpindex.ai/server/io-github-dcostenco-prism-coder)
<a href="https://mcpindex.ai/server/io-github-dcostenco-prism-coder"><img src="https://mcpindex.ai/api/v1/badge/io-github-dcostenco-prism-coder" alt="mcpindex verdict" height="20" /></a>
```

`BRAVE_API_KEY`
Brave Search API key for web search tools

`GEMINI_API_KEY`
Google Gemini API key for AI-powered summarization and embeddings

`SUPABASE_URL`
Supabase project URL for session memory and knowledge persistence

`SUPABASE_KEY`
Supabase service role key for database access

`PRISM_USER_ID`
User ID for multi-tenant row-level security isolation (defaults to 'default')

`GCP_PROJECT_ID`
Google Cloud project ID for Vertex AI Discovery Engine integration

`VERTEX_LOCATION`
Vertex AI location/region (defaults to 'global')

`VERTEX_DATA_STORE_ID`
Vertex AI Discovery Engine data store ID for enterprise search

[methodology](https://mcpindex.ai/methodology)

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