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request-dump-viewer

Inspect local Hermes request dumps, messages, tool calls, schemas, and diffs in a dashboard tab. Disclosure — reads matching request dumps and Hermes state.db read-only; its capture switch writes only plugin-data/request-dump-viewer state and sets or clears HERMES_DUMP_REQUESTS in the gateway process, which is process-wide, so in a multi-profile gateway capture also records requests handled for other profiles while it is on. No network, shell, telemetry, or credential-store access.

TDV AlinsaDesktopv0.4.4Updated 2 hours ago

About

Inspect local Hermes request dumps, messages, tool calls, schemas, and diffs in a dashboard tab. Disclosure — reads matching request dumps and Hermes state.db read-only; its capture switch writes only plugin-data/request-dump-viewer state and sets or clears HERMES_DUMP_REQUESTS in the gateway process, which is process-wide, so in a multi-profile gateway capture also records requests handled for other profiles while it is on. No network, shell, telemetry, or credential-store access.

Hermes Request Dump Viewer

A Hermes Agent plugin for inspecting captured LLM request dumps in the Hermes web dashboard. If you want to see the exact back-and-forth between your clanker and your LLM provider, including the system prompt and tool calls, this is the tool for you!

Features, all available in the Request Dumps dashboard tab:

  • Adds a real-time toggle for capturing LLM requests (equivalent to setting HERMES_DUMP_REQUESTS=true)
  • And a button for deleting all request_dump_*.json files in Hermes' sessions directory
  • See a quick overview of your sessions, showing character counts and estimated token usage, and the top sources of token use
  • Study every bit of your session, message-by-message, including system prompt, user messages, LLM responses, tool calls and results, etc.
  • Break down your system prompt, section-by-section, so that you can figure out that you have waaaaay too many skills enabled
  • Show the schema of the various enabled tools
  • See diffs between requests, so you can see if something is screwing up your prefix caching
  • Supports both Chat Completion and Responses-style requests
  • Download the raw JSON if the web UI just isn't detailed enough

Requirements

  • Hermes Agent with the general plugin system and web-dashboard plugin system
  • Hermes Agent >=0.21.5 providing the pre_api_request hook and
    HERMES_DUMP_REQUESTS request-capture path
  • Python 3.11–3.14

Installation

Install the published plugin directly from GitHub:

hermes plugins install alinsavix/hermes-request-dump-viewer --enable

For a reproducible installation, pin an exact 40-character commit SHA.
Replace <FULL_COMMIT_SHA> below with a commit SHA from this repository:

hermes plugins install alinsavix/hermes-request-dump-viewer \
  --ref "<FULL_COMMIT_SHA>" \
  --enable

Restart the Hermes gateway and dashboard after installation.

The plugin is opt-in. Verify that it is enabled:

hermes plugins

Usage

Open the Request Dumps tab in the Hermes web dashboard. Capture is disabled
at gateway startup. Turn on Preflight capture only when investigating a
request; it writes request dumps for subsequent requests until turned off or
the gateway process ends.

Capture is process-wide: in a multi-profile gateway, enabling it from one
profile can capture requests handled for other profiles sharing that gateway.
Turn it on only for the investigation window, then turn it off.

The viewer reads dumps from Hermes' sessions directory. Redacted views are the
default. Raw downloads contain the original request object and may include
private prompts, authorization headers, cookies, tokens, URLs, tool arguments,
or other sensitive data. Only use raw download and deletion controls when
you understand the local dashboard's access boundary.

Limits

Token counts are estimates, redaction is best-effort, and individual dumps
larger than 32 MiB cannot be opened in the viewer.

Screenshots

The viewer provides several ways to inspect a captured request without losing
the structure of the original conversation. Images are capped for readability
in the repository view; open one in a new tab to see the full-resolution image.

Overview

Messages

Prompt map

Schemas

Request diffs

Security notes

  • The plugin runs Python in-process with Hermes and is not sandboxed.
  • The plugin reads matching request dumps from Hermes' sessions directory and
    reads Hermes' state.db without modifying it to correlate messages with
    captured requests.
  • The capture switch writes only its own state file under
    <HERMES_HOME>/plugin-data/request-dump-viewer/ and, through its registered
    gateway hook, sets or clears HERMES_DUMP_REQUESTS for the current gateway
    process immediately before a provider request. That environment setting is
    process-wide, so a multi-profile gateway can capture requests from another
    profile while capture is enabled.
  • It makes no network or shell calls, uses no telemetry, and never reads
    credential stores.
  • Request dumps are local files, but dashboard access should still be treated as privileged.
  • Redaction is best-effort and cannot recognize every secret embedded in arbitrary prompt text or tool payloads.
  • Raw JSON download requires an explicit confirmation in the UI.
  • Dump deletion is restricted to files matching request_dump_*.json in Hermes' sessions directory.
  • Do not enable preflight capture in a shared or sensitive deployment unless the resulting data is acceptable to retain locally.

Compatibility and versioning

The plugin follows semantic versioning. The plugin manifest and dashboard
manifest use the same release version. When Hermes changes the dashboard SDK,
API route contract, request-dump format, or pre_api_request hook, update the
compatibility notes and tests before releasing.

License

Copyright (C) 2026 TDV Alinsa.

This project is licensed under the GNU Affero General Public License, version 3
or any later version (AGPL-3.0-or-later). See LICENSE.

README from the reviewed commit 3d94c6d; it updates when the author re-pins.