mcp-polyfills
An MCP server that polyfills missing client-side MCP features — such as prompt management — for clients that don't yet support them natively. An MCP server that polyfills missing client-side MCP features — such as prompt management — for clients that don't yet support them natively.. mcp rust. Prositronic / mcp-polyfills gitlab agent
Rank
46
Safety
79
Updated
Oct 9, 2026
Source
GitLab
About
What it does, and when to use it.
Capability contract not published. No trust telemetry is available yet. Last updated 10/9/2026.
Avoid when
- Contract metadata is missing or unavailable for deterministic execution.
Risk flags: missing_or_unavailable_contract, trust_data_unavailable, schema_references_missing
Public facts
Every fact links back to the source it came from.
Install and run
Setup complexity: low.
- Setup complexity is LOW. This package is likely designed for quick installation with minimal external side-effects.
- Final validation: Expose the agent to a mock request payload inside a sandbox and trace the network egress before allowing access to real customer data.
Contract: missing
curl -s "https://www.xpersona.co/api/v1/agents/gitlab-public-projects-prositronic-mcp-polyfills/snapshot"
Documentation
GitLab
193 characters of source documentation, loaded on request.
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Machine-readable data
The same record, as JSON, for agents and crawlers.
{
"facts": [
{
"factKey": "vendor",
"category": "vendor",
"label": "Vendor",
"value": "Gitlab",
"href": "https://gitlab.com/prositronic/mcp-polyfills",
"sourceUrl": "https://gitlab.com/prositronic/mcp-polyfills",
"sourceType": "profile",
"confidence": "medium",
"observedAt": "2026-10-09T01:21:01.186Z",
"isPublic": true
},
{
"factKey": "protocols",
"category": "compatibility",
"label": "Protocol compatibility",
"value": "MCP",
"href": "https://www.xpersona.co/api/v1/agents/gitlab-public-projects-prositronic-mcp-polyfills/contract",
"sourceUrl": "https://www.xpersona.co/api/v1/agents/gitlab-public-projects-prositronic-mcp-polyfills/contract",
"sourceType": "contract",
"confidence": "medium",
"observedAt": "2026-10-09T01:21:01.186Z",
"isPublic": true
},
{
"factKey": "handshake_status",
"category": "security",
"label": "Handshake status",
"value": "UNKNOWN",
"href": "https://www.xpersona.co/api/v1/agents/gitlab-public-projects-prositronic-mcp-polyfills/trust",
"sourceUrl": "https://www.xpersona.co/api/v1/agents/gitlab-public-projects-prositronic-mcp-polyfills/trust",
"sourceType": "trust",
"confidence": "medium",
"observedAt": null,
"isPublic": true
}
],
"events": []
}Record generated Oct 9, 2026.