http2_frame_parse
Decode a raw HTTP/2 frame (hex string) back into its header fields and type-specific payload (SETTINGS entries, PING opaque data, WINDOW_UPDATE increment, RST_STREAM/GOAWAY error codes, GOAWAY debug data). Inverse of http2_frame_build. Lenient: malformed payloads set decodeError but still return ...
This record as markdown: /tools/io-github-vmoranv-jshookmcp/http2-frame-parse.md
What http2_frame_parse does on Jshookmcp
AI agents call http2_frame_parse to retrieve information from Jshookmcp without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
Why http2_frame_parse is rated Low
Parses and decodes data with no side effects; purely analytical read operation.
From the tool's definition Decode a raw HTTP/2 frame... into its header fields
Attacks that exploit this kind of access
The rule that runs http2_frame_parse safely
PolicyLayer is an MCP gateway: it sits between your AI agents and Jshookmcp, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For http2_frame_parse, this is the rule to start with:
http2_frame_parse is read-only, so it stays allowed. Everything else on the server is denied unless you say otherwise.
The button opens the PolicyLayer dashboard: create your workspace, connect Jshookmcp, apply this rule, and every http2_frame_parse call is checked against it from then on.
Questions about http2_frame_parse
Decode a raw HTTP/2 frame (hex string) back into its header fields and type-specific payload (SETTINGS entries, PING opaque data, WINDOW_UPDATE increment, RST_STREAM/GOAWAY error codes, GOAWAY debug data). Inverse of http2_frame_build. Lenient: malformed payloads set decodeError but still return payloadHex. It is categorised as a Read tool in the Jshookmcp MCP Server, which means it retrieves data without modifying state.
Register the Jshook MCP server in PolicyLayer and add a rule for http2_frame_parse: allow, deny, rate-limit, or require approval. Point your MCP client at the PolicyLayer proxy URL and the rule is enforced on every call, before it reaches Jshookmcp. Nothing to install.
http2_frame_parse is a Read tool with low risk. Read-only tools are generally safe to allow by default.
Yes. Add a rate_limit block to the http2_frame_parse rule in your PolicyLayer policy. For example, setting max: 10 and window: 60 limits the tool to 10 calls per minute. Rate limits are tracked per agent session and reset automatically.
Set action: deny in the PolicyLayer policy for http2_frame_parse. The AI agent will receive a policy violation error and cannot call the tool. You can also include a reason field to explain why the tool is blocked.
http2_frame_parse is provided by the Jshook MCP server (@jshookmcp/jshook). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
More on Jshook, and thousands of servers like it.
This server
Across the catalogue