io.github.agentailor/slimcontext-mcp-server
NPM · SLIMCONTEXT-MCP-SERVER
MCP Server for SlimContext - AI chat history compression tools
Available components
Last scanned (3 hours ago)
Scores higher than 81% of npm 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 Security81
- No malware found by supply-chain analysis.Pass
- CVE check failed: a known high-severity CVE affects zod 3.25.76, a direct dependency. A fixed version is available. View diagnostics → Fail
- No install/post-install scripts declared.Pass
- 45 of 147 dependencies flagged as unhealthy (2 deprecated). View diagnostics → Partial
Provenance & Transparency94
- Source repository is publicly reachable at the declared URL. View diagnostics → Pass
- Cryptographically verified build provenance (signed, bound to agentailor/slimcontext-mcp-server). View diagnostics → Pass
- Clear OSI-approved license (MIT).Pass
- Actively maintained (last published 415 days ago).Pass
- Disclosure check failed: no security disclosure policy was found in the source repository. See how to fix → Fail
Schema Quality & AI Usability69
- AI-judged instruction clarity (good).Pass
- Tool/resource definitions use about 247 tokens (~123/item across 2 items; 2 tools + 0 resources), lean.Pass
- Usage-examples check failed: none of the tools include examples. See how to fix → Fail
Stability & Change Management77
- Stability observed for 23 of 30 days with no destabilising changes; credit accrues until the full window elapses.Partial
Tool Coverage100
- 100% of tools have a non-trivial description (not blank, and not just the tool's name).Pass
- 100% of tool parameters carry a description.Pass
Tool Safety100
- No prompt-injection markers were found in the server instructions, tool names or descriptions we captured.Pass
- We read all 2 captured tool definition(s), and no name or description among them implies an irreversible operation.Pass
- An AI judge read all 2 captured unit(s) of tool text and found none that tries to manipulate the model reading it.Pass
Capabilities100
- Implements a supported MCP spec version (2025-11-25); the latest is 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.
- 5 Nov 26 −4
- Stability: pass → 0.77 functional
- 30 Oct 26 +1
- Stability: 0.97 → pass security
- 29 Oct 26 −1
- Stability: pass → 0.97 functional
- 24 Oct 26 −2
- CVE-2023-54404 affects this package: high ▼ security
- Known CVEs: CVE check failed: a known high-severity CVE affects zod 3.25.76, a direct dependency. A fixed version is available. security
- 23 Oct 26 0
- Stability: 0.97 → pass security
- 22 Oct 26 0
- Stability: pass → 0.97 functional
- 16 Oct 26 0
- Stability: 0.97 → pass security
- 15 Oct 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 93 to 97. That category is still filling its 30-day observation window: 28 days of observed history at the previous scan, 29 at this one. The score rises as the window fills, whether or not the server changes.
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 5 Nov 2026 · Analysed npm/slimcontext-mcp-server@0.1.2
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 | npm |
| Reason | Verified |
| Discovered via | Registry attestation endpoint |
| Source repo | agentailor/slimcontext-mcp-server |
| Certificate issuer | https://token.actions.githubusercontent.com |
| Certificate SAN | https://github.com/agentailor/slimcontext-mcp-server/.github/workflows/ci.yml@refs/tags/v0.1.2 |
| Rekor log index | 522448740 |
| Predicate type | SLSA build provenance https://slsa.dev/provenance/v1 |
| Subject digest | sha512:f8a1f4c032bccbfb2433d5a794f64c051f6b17911dc1418557ad4fd8fc3016ad999117239ef0e4de1607751b9a27ffc13179664914f62e67017dbac4d |
Background: How many MCP packages publish verified provenance →
Vulnerabilities 6 findings
| ID | CVE | Severity | Vector | Fix available |
|---|---|---|---|---|
| GHSA-3644-q5cj-c5c7 | CVE-2026-45134 | high | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:L/A:N | yes |
| GHSA-fw9q-39r9-c252 | CVE-2026-40190 | medium | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L | yes |
| GHSA-rr7j-v2q5-chgv | CVE-2026-41182 | medium | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N | yes |
| GHSA-v34v-rq6j-cj6p | CVE-2026-25528 | medium | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:N/A:N | yes |
| GHSA-w5hq-g745-h8pq | CVE-2026-41907 | high | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N | yes |
| GHSA-mrhx-c7xc-m3w5 | CVE-2023-54404 | high | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H | yes |
Background: What a vulnerability scan can and cannot prove →
Dependencies 147 packages
| Packages resolved | 147 |
|---|---|
| Deprecated | 2 |
| Stale | 43 |
| 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 →
summarize_messages ~151
Compress chat message history using AI-powered summarization strategy. Creates concise summaries of older messages while preserving system messages and recent context.
| Name | Type | Req | Description |
|---|---|---|---|
| customPrompt | string | – | Custom prompt for summarization (optional) |
| maxModelTokens | number | – | Model's maximum token context window |
| messages | array | yes | Array of chat messages to compress |
| minRecentMessages | number | – | Minimum recent messages to always preserve |
| openaiApiKey | string | – | OpenAI API key (can also be set via OPENAI_API_KEY environment variable) |
| openaiModel | string | – | OpenAI model to use for summarization |
| thresholdPercent | number | – | Percentage threshold to trigger compression (0-1) |
No output schema declared.
No examples provided.
trim_messages ~96
Compress chat message history using token-based trimming strategy. Removes oldest non-system messages when token count exceeds threshold while preserving system messages and recent context.
| Name | Type | Req | Description |
|---|---|---|---|
| maxModelTokens | number | – | Model's maximum token context window |
| messages | array | yes | Array of chat messages to compress |
| minRecentMessages | number | – | Minimum recent messages to always preserve |
| thresholdPercent | number | – | Percentage threshold to trigger compression (0-1) |
No output schema declared.
No examples provided.
How do I install the io.github.agentailor/slimcontext-mcp-server server?
io.github.agentailor/slimcontext-mcp-server runs locally as an npm package, launched with npx -y slimcontext-mcp-server. Ready-made configuration for Claude, Cursor, VS Code, Codex and 5 more is on this page, copied from each client's own documentation.
npm · slimcontext-mcp-server
claude mcp add agentailor-slimcontext-mcp-server -- npx -y slimcontext-mcp-server
What is the io.github.agentailor/slimcontext-mcp-server server?
io.github.agentailor/slimcontext-mcp-server is listed in the public MCP registry as io.github.agentailor/slimcontext-mcp-server. MCP Server for SlimContext - AI chat history compression tools. This page covers its npm package (slimcontext-mcp-server).
Is the io.github.agentailor/slimcontext-mcp-server server safe to use?
io.github.agentailor/slimcontext-mcp-server scores 84 out of 100 on VerifyMCP. We recorded 6 known advisories against it as of 5 November 2026. It declares no install or post-install scripts. 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.agentailor/slimcontext-mcp-server server expose?
io.github.agentailor/slimcontext-mcp-server exposes 2 tools: trim_messages, summarize_messages. Their descriptions and schemas cost roughly 247 tokens of context every time the server is loaded.
Is the io.github.agentailor/slimcontext-mcp-server server still maintained?
io.github.agentailor/slimcontext-mcp-server is still listed as active in the MCP registry. We last reached this channel on 5 November 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.agentailor/slimcontext-mcp-server server under?
io.github.agentailor/slimcontext-mcp-server declares the MIT licence, which is OSI-approved. That covers the source only, and says nothing about the cost of any service it calls.