webhook-subscriptions

webhook-subscriptions is a skill for Claude Code, Codex from chemany/Mente. It costs 13 tokens per session (1,672 once invoked), scanned A, a copy of webhook-subscriptions, MIT.

A system that lets outside services send events to a URL and start an agent run. Events can come from tools such as GitHub, Stripe, CI systems, or IoT sensors.

In plain words
What is it for?
Use it to trigger agent runs from code changes, payments, build events, sensor readings, or monitoring alerts.
Why use it?
It removes the need to start agent work manually when something happens in another service. The agent can respond to events as they arrive.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

Good fit Use it to trigger agent runs from code changes, payments, build events, sensor readings, or monitoring alerts.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/chemany/mente/webhook-subscriptions
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Any agent
npx skills add chemany/Mente --skill webhook-subscriptions
Clone the repo
git clone --depth 1 https://github.com/chemany/Mente

Made for: Claude Code, Codex.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for webhook-subscriptions

README.md
[![agentmods](https://agentmods.dev/badge/skills/chemany/mente/webhook-subscriptions.svg)](https://agentmods.dev/skills/chemany/mente/webhook-subscriptions)
Your own site
<a href="https://agentmods.dev/skills/chemany/mente/webhook-subscriptions"><img src="https://agentmods.dev/badge/skills/chemany/mente/webhook-subscriptions.svg" alt="Measured on agentmods" height="20"></a>
Per session 13 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,672 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 1 finding. A grade says what 26 rules found in the file — not that it is safe.
Origin 94% copy Near-identical to another mod in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00013 $0.01672
Opus 5 $0.00006 $0.00836
Sonnet 5 $0.00003 $0.00334
Haiku 4.5 $0.00001 $0.00167

Measured 4d ago against content hash b78f30f13d90, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-07, from the pricing page.

Security

Grade A, and why

webhook-subscriptions scanned grade A with 1 finding against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 4d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Makes network callslowCapability

Not a fault in itself. Listed so you know the mod talks to something, and to what.

curl http://localhost:8644/health
Origin

This is a copy

94% identical to webhook-subscriptions — 64 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.

skills/devops/webhook-subscriptions/SKILL.md · 204 lines

How it starts

The opening of the file, as written. The whole thing — 204 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Webhook Subscriptions

Create dynamic webhook subscriptions so external services (GitHub, GitLab, Stripe, CI/CD, IoT sensors, monitoring tools) can trigger Hermes agent runs by POSTing events to a URL.

Setup (Required First)

The webhook platform must be enabled before subscriptions can be created. Check with:

hermes webhook list

If it says "Webhook platform is not enabled", set it up:

Option 1: Setup wizard

hermes gateway setup

Follow the prompts to enable webhooks, set the port, and set a global HMAC secret.

Option 2: Manual config

Add to ~/.hermes/config.yaml:

platforms:
  webhook:
    enabled: true
    extra:
      host: "0.0.0.0"
      port: 8644
      secret: "generate-a-strong-secret-here"

Option 3: Environment variables

Add to ~/.hermes/.env:

WEBHOOK_ENABLED=true
WEBHOOK_PORT=8644
WEBHOOK_SECRET=generate-a-strong-secret-here

After configuration, start (or restart) the gateway:

hermes gateway run
# Or if using systemd:
systemctl --user restart hermes-gateway

Verify it's running:

curl http://localhost:8644/health

Commands

All management is via the hermes webhook CLI command:

Create a subscription

hermes webhook subscribe <name> \
  --prompt "Prompt template with {payload.fields}" \
  --events "event1,event2" \
  --description "What this does" \
  --skills "skill1,skill2" \
  --deliver telegram \
  --deliver-chat-id "12345" \
  --secret "optional-custom-secret"

Returns the webhook URL and HMAC secret. The user configures their service to POST to that URL.

List subscriptions

hermes webhook list

Remove a subscription

hermes webhook remove <name>

Test a subscription

hermes webhook test <name>
hermes webhook test <name> --payload '{"key": "value"}'

Prompt Templates

Prompts support {dot.notation} for accessing nested payload fields:

  • {issue.title} — GitHub issue title
  • {pull_request.user.login} — PR author
  • {data.object.amount} — Stripe payment amount
  • {sensor.temperature} — IoT sensor reading

Read the full file on GitHub · 204 lines

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 4d ago First seen · 204 lines · 13 tokens per session scan A b78f30f13d90

Subscribe to this mod's changes

webhook-subscriptions is a skill published in the GitHub repository chemany/Mente (11 stars, last pushed 3mo ago), licensed MIT. It adds 13 tokens to every session and 1,672 once invoked, about $0.0001 per session on Opus 5. A static security scan graded it A with 1 finding (makes network calls). It is 94% identical to webhook-subscriptions, differing in 64 lines, and is treated as a copy.

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