# io.github.Apheironn/pasr (pypi · pasr-mcp)

Local, token-budgeted code context with file:line provenance and selection receipts.

- Trust score: 84/100 (high trust)
- Change this week: +6
- Registry status: active
- Liveness: live
- Owner verified: no
- Last scored: 2026-10-17

## Components

- pypi · `pasr-mcp`: 84/100 (this document), [markdown](https://verifymcp.io/servers/apheironn-pasr/pasr-mcp.md), [page](https://verifymcp.io/servers/apheironn-pasr/pasr-mcp)

## Channel facts

- Registry: `pypi`
- Package: `pasr-mcp`
- Version: `0.4.0`
- Transport: `stdio`

## Trust breakdown

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. Scores are 0–100 per category. Scoring method: https://verifymcp.io/docs/scoring (what has changed: https://verifymcp.io/docs/scoring/changelog)

Scored 2026-10-17.

- **Supply Chain Security**: 100/100
  - No malware found by supply-chain analysis.
  - No known CVEs affecting this package version or its production dependencies.
  - Runs hatchling.build at install time, a recognised build step with no custom scripting around it.
  - 1 of 39 dependencies flagged as unhealthy.
- **Provenance & Transparency**: 100/100
  - Source repository is publicly reachable at the declared URL.
  - Cryptographically verified build provenance (signed, bound to Apheironn/pasr).
  - Clear OSI-approved license (Apache-2.0).
  - Actively maintained (last published 11 days ago).
  - Publishes a security disclosure policy (SECURITY.md).
- **Schema Quality & AI Usability**: 68/100
  - AI-judged instruction clarity (good).
  - Tool/resource definitions use about 407 tokens (~81/item across 5 items; 5 tools + 0 resources), lean.
  - Usage-examples check failed: none of the tools include examples.
- **Stability & Change Management**: 43/100
  - Stability observed for 13 of 30 days with no destabilising changes; credit accrues until the full window elapses.
- **Tool Coverage**: 71/100
  - 100% of tools have a non-trivial description (not blank, and not just the tool's name).
  - 0% of tool parameters carry a description.
  - Structured output schemas are declared (100% of tools); any adoption earns full credit.
- **Tool Safety**: 100/100
  - No prompt-injection markers were found in the server instructions, tool names or descriptions we captured.
  - We read all 5 captured tool definition(s), and no name or description among them implies an irreversible operation.
  - An AI judge read all 5 captured unit(s) of tool text and found none that tries to manipulate the model reading it.
- **Capabilities**: 100/100
  - Implements a current MCP spec version (2026-07-28).

## Install

### How do I install the io.github.Apheironn/pasr MCP server?

io.github.Apheironn/pasr runs locally as a PyPI package, launched with uvx pasr-mcp. Ready-made configuration for Claude, Cursor, VS Code, Codex and 5 more is on this page, copied from each client's own documentation.

### Claude

```bash
claude mcp add apheironn-pasr -- uvx pasr-mcp
```

### Cursor

```json
{
  "mcpServers": {
    "apheironn-pasr": {
      "command": "uvx",
      "args": [
        "pasr-mcp"
      ]
    }
  }
}
```

### VS Code

```json
{
  "servers": {
    "apheironn-pasr": {
      "command": "uvx",
      "args": [
        "pasr-mcp"
      ]
    }
  }
}
```

### Codex

```bash
codex mcp add apheironn-pasr -- uvx pasr-mcp
```

### opencode

```json
{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "apheironn-pasr": {
      "type": "local",
      "command": [
        "uvx",
        "pasr-mcp"
      ],
      "enabled": true
    }
  }
}
```

### OpenClaw

```bash
openclaw mcp add apheironn-pasr --command uvx --arg pasr-mcp
```

### Hermes

```yaml
mcp_servers:
  apheironn-pasr:
    command: "uvx"
    args: ["pasr-mcp"]
```

### Netclaw

```json
{
  "McpServers": {
    "apheironn-pasr": {
      "Transport": "stdio",
      "Command": "uvx",
      "Arguments": [
        "pasr-mcp"
      ]
    }
  }
}
```

### Vellum

```bash
assistant mcp add apheironn-pasr -t stdio -c uvx -a pasr-mcp
```

### Other

```json
{
  "mcpServers": {
    "apheironn-pasr": {
      "command": "uvx",
      "args": [
        "pasr-mcp"
      ]
    }
  }
}
```

## Changelog

Every change recorded for this component, newest first. Days that predate change tracking, or that we cannot explain, say so: "we were watching and nothing happened" and "we were not watching" are different claims.

### 2026-10-16 (score 84, +1)

No change was recorded against any check on this day. Stability & Change Management went from 37 to 40. That category is still filling its 30-day observation window: 11 days of observed history at the previous scan, 12 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-10-14 (score 83, +33)

- [security improvement] Injection markers: unverified → pass
- [functional improvement] Tool coverage: unverified → 100
- [functional improvement] MCP protocol: unverified → pass
- [functional improvement] Stability: unverified → 0.33

### 2026-10-13 (score 50, +15)

- [security improvement] Malware scan: unverified → pass

### 2026-10-12 (score 35, −43)

- [security regression] Malware scan: pass → unverified
- [security regression] Tool safety: pass → unverified
- [security] Stability: Stability not yet verified: we do not have a sandbox capture of the MCP schema this version of the package serves yet.
- [functional regression] Capabilities: pass → unverified
- [functional regression] Tool coverage: 100 → unverified
- [functional] First check of Schema quality: unverified
- [functional] Package version: 0.3.0 → 0.4.0

### 2026-10-04 (score 78)

First indexed and scored.

## MCP tools (5)

### `find_files` (~58 tokens)

Rank workspace paths by query-term matches in their names. Does not search file contents. Optional include scopes paths; an empty query lists candidates.

Input parameters:

- `include` (array)
- `query` (string)
- `top_k` (integer)

### `find_symbols` (~77 tokens)

Find exact or partial symbol definitions with file:line ranges (Python, JS/TS, Rust). include uses workspace-relative paths/globs: *.py is root-only; **/*.py is recursive.

Input parameters:

- `include` (array)
- `kinds` (array)
- `query` (string)
- `top_k` (integer)

### `find_evidence` (~76 tokens)

Locate query terms in workspace source, with ranked file:line hits and read ranges. include uses workspace-relative paths/globs: *.py is root-only; **/*.py is recursive.

Input parameters:

- `include` (array)
- `per_file` (integer)
- `query` (string)
- `top_k` (integer)

### `find_usages` (~61 tokens)

Find lexical references to a symbol, with source lines and enclosing definitions when available. Returns at most top_k hits; read_lines suggests bounded source ranges.

Input parameters:

- `include` (array)
- `symbol` (string, required)
- `top_k` (integer)

### `select_context` (~135 tokens)

Select source spans from explicit files and/or include globs for a query. Context is capped at 1,500 tokens including file:line labels; metadata costs extra. Files accept path:start-end ranges. Range-only reads return ordered whole-line prefixes and continuation.files; whole-file or mixed scopes are ranked. outline returns a definition index. Each call is independent: retain prior context and compare source_fingerprint across continuations.

Input parameters:

- `advanced` (object)
- `budget_tokens` (integer)
- `files` (array)
- `include` (array)
- `outline` (boolean)
- `query` (string, required)

## Diagnostics

Captured diagnostic sections: Provenance, Install scripts, Dependencies. The full working is on the page: https://verifymcp.io/servers/apheironn-pasr/pasr-mcp#diagnostics

## Score history

- 2026-10-17: 84
- 2026-10-16: 84
- 2026-10-15: 83
- 2026-10-14: 83
- 2026-10-13: 50
- 2026-10-12: 35
- 2026-10-04: 78

## Common questions

### What is the io.github.Apheironn/pasr MCP server?

io.github.Apheironn/pasr is an MCP server listed in the public MCP registry as io.github.Apheironn/pasr. Local, token-budgeted code context with file:line provenance and selection receipts. This page covers its PyPI package (pasr-mcp).

### Is the io.github.Apheironn/pasr MCP server safe to use?

io.github.Apheironn/pasr scores 84 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 io.github.Apheironn/pasr MCP server expose?

io.github.Apheironn/pasr exposes 5 tools: find_files, find_symbols, find_evidence, find_usages, select_context. Their descriptions and schemas cost roughly 407 tokens of context every time the server is loaded.

### Is the io.github.Apheironn/pasr MCP server still maintained?

io.github.Apheironn/pasr 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 io.github.Apheironn/pasr MCP server under?

io.github.Apheironn/pasr declares the Apache-2.0 licence, which is OSI-approved. That covers the source only, and says nothing about the cost of any service it calls.

## Links

- PyPI project: https://pypi.org/project/pasr-mcp/
- Socket report: https://socket.dev/pypi/package/pasr-mcp
- Repository: https://github.com/Apheironn/pasr
- Changelog RSS feed: https://verifymcp.io/servers/apheironn-pasr/pasr-mcp.xml
- Changelog JSON feed: https://verifymcp.io/servers/apheironn-pasr/pasr-mcp.json
- HTML version of this page: https://verifymcp.io/servers/apheironn-pasr/pasr-mcp