io.github.Apheironn/pasr
PYPI · PASR-MCP
Local, token-budgeted code context with file:line provenance and selection receipts.
Available components
Last scanned (23 hours ago)
Scores higher than 88% of PyPI servers
Category Code Search and Documentation
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 39 dependencies flagged as unhealthy. View diagnostics → Partial
Provenance & Transparency100
- Source repository is publicly reachable at the declared URL. View diagnostics → Pass
- Cryptographically verified build provenance (signed, bound to Apheironn/pasr). View diagnostics → Pass
- Clear OSI-approved license (Apache-2.0).Pass
- Actively maintained (last published 10 days ago).Pass
- Publishes a security disclosure policy (SECURITY.md).Pass
Schema Quality & AI Usability68
- AI-judged instruction clarity (good).Pass
- Tool/resource definitions use about 407 tokens (~81/item across 5 items; 5 tools + 0 resources), lean.Pass
- Usage-examples check failed: none of the tools include examples. See how to fix → Fail
Stability & Change Management40
- Stability observed for 12 of 30 days with no destabilising changes; credit accrues until the full window elapses.Partial
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 5 captured tool definition(s), and no name or description among them implies an irreversible operation.Pass
- An AI judge read all 5 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.
- 16 Oct 26 +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.
- 14 Oct 26 +33
- Injection markers: unverified → pass ▲ security
- Tool coverage: unverified → 100 ▲ functional
- MCP protocol: unverified → pass ▲ functional
- Stability: unverified → 0.33 ▲ functional
- 13 Oct 26 +15
- Malware scan: unverified → pass ▲ security
- 12 Oct 26 −43
- Malware scan: pass → unverified ▼ security
- 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. security
- Capabilities: pass → unverified ▼ functional
- Tool coverage: 100 → unverified ▼ functional
- First check of Schema quality: unverified functional
- Package version: 0.3.0 → 0.4.0 functional
- 4 Oct 26 78
First indexed and scored.
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 16 Oct 2026 · Analysed pypi/pasr-mcp@0.4.0
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 | Apheironn/pasr |
| Certificate issuer | https://token.actions.githubusercontent.com |
| Certificate SAN | https://github.com/Apheironn/pasr/.github/workflows/publish.yml@refs/heads/main |
| Rekor log index | 3084944666 |
| Predicate type | PyPI publish attestation https://docs.pypi.org/attestations/publish/v1 |
| Subject digest | sha256:97518dc0a732855a668e0a0be8c771e4f76f94a79e210fed81e038f3a838c12d |
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 39 packages
| Packages resolved | 39 |
|---|---|
| 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 →
find_evidence ~76
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.
| Name | Type | Req | Description |
|---|---|---|---|
| include | array | – | – |
| per_file | integer | – | – |
| query | string | – | – |
| top_k | integer | – | – |
Structured output declared, but exposes no named fields.
No examples provided.
find_files ~58
Rank workspace paths by query-term matches in their names. Does not search file contents. Optional include scopes paths; an empty query lists candidates.
| Name | Type | Req | Description |
|---|---|---|---|
| include | array | – | – |
| query | string | – | – |
| top_k | integer | – | – |
Structured output declared, but exposes no named fields.
No examples provided.
find_symbols ~77
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.
| Name | Type | Req | Description |
|---|---|---|---|
| include | array | – | – |
| kinds | array | – | – |
| query | string | – | – |
| top_k | integer | – | – |
Structured output declared, but exposes no named fields.
No examples provided.
find_usages ~61
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.
| Name | Type | Req | Description |
|---|---|---|---|
| include | array | – | – |
| symbol | string | yes | – |
| top_k | integer | – | – |
Structured output declared, but exposes no named fields.
No examples provided.
select_context ~135
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.
| Name | Type | Req | Description |
|---|---|---|---|
| advanced | object | – | – |
| budget_tokens | integer | – | – |
| files | array | – | – |
| include | array | – | – |
| outline | boolean | – | – |
| query | string | yes | – |
Structured output declared, but exposes no named fields.
No examples provided.
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.
pypi · pasr-mcp
claude mcp add apheironn-pasr -- uvx pasr-mcp
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 16 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 16 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.