build-action-webhook

build-action-webhook is a skill for Claude Code, Codex from genudo-ai/genudo_mcp. It costs 101 tokens per session (510 once invoked), scanned A, original, MIT.

A workflow for creating an outbound HTTP action, also called a webhook, that sends data to another service or calls an API. It can attach the action to a pipeline or one of its stages.

In plain words
What is it for?
Use it to configure the request method, URL, headers, payload, trigger, retries, and response example for an external automation.
Why use it?
It connects an agent's pipeline to services such as Zapier, Make, n8n, a CRM, Google Sheets, or another API without hard-coding pipeline data.

Skill for Claude CodeCodex

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

Good fit Use it to configure the request method, URL, headers, payload, trigger, retries, and response example for an external automation.

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Install with agentmods
npx agentmods add skills/genudo-ai/genudo_mcp/build-action-webhook
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 genudo-ai/genudo_mcp --skill build-action-webhook
Clone the repo
git clone --depth 1 https://github.com/genudo-ai/genudo_mcp

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 build-action-webhook

README.md
[![agentmods](https://agentmods.dev/badge/skills/genudo-ai/genudo_mcp/build-action-webhook/github.svg)](https://agentmods.dev/skills/genudo-ai/genudo_mcp/build-action-webhook)
Your own site
<a href="https://agentmods.dev/skills/genudo-ai/genudo_mcp/build-action-webhook"><img src="https://agentmods.dev/badge/skills/genudo-ai/genudo_mcp/build-action-webhook/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for build-action-webhook

Your own site · 80×15
<a href="https://agentmods.dev/skills/genudo-ai/genudo_mcp/build-action-webhook"><img src="https://agentmods.dev/badge/skills/genudo-ai/genudo_mcp/build-action-webhook.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 101 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 510 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found 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 $0.00101 $0.00510
Opus 5 $0.00051 $0.00255
Sonnet 5 $0.00020 $0.00102
Haiku 4.5 $0.00010 $0.00051

Measured 10d ago against content hash 4254306ff099, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-10, from the pricing page.

Security

Grade A, and why

build-action-webhook scanned grade A with 0 findings 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 10d 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.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

chatgpt/genudo-chatgpt-plugin/skills/build-action-webhook/SKILL.md · 41 lines

What it actually says

Build Action Webhook

Create the HTTP action that lets an agent push data out or call an API.

Before creating

Ensure every value the payload/URL/headers need already exists as a variable (manage-pipeline-variables). Never inline raw {{opportunity.*}} — reference variables by their name.

Fields

  • method, url — the endpoint (e.g. a Zapier/Make/n8n catch hook).
  • headers — auth and content-type; values may reference variables.
  • payload — each entry is a field name + type + the variable that fills it.
  • fixed_triggerstage_started | on_any_message | on_user_message | custom.
  • stage_id — attach to a stage; omit for a pipeline-wide action.
  • instructions — WHEN the agent should call this action, plus any special handling.
  • response_example — a sample response; set this when a later action chains on this one's output (via a from_action variable).
  • Optional: max_fires, retries, order.

Workflow

  1. list_actions for the pipeline — avoid duplicating an existing action, and find the action_id when the user means to change one.
  2. list_variables; create any missing (delegate to manage-pipeline-variables).
  3. Confirm the full action spec with the user.
  4. create_action (or update_action to change one). Report the action ID.

Cautions

  • fixed_trigger is set at creation; on update it can only change to on_user_message or custom. Pick the trigger correctly the first time.
  • The agent must not tell the customer the action succeeded unless the response confirms it.
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. 10d ago First seen · 41 lines · 101 tokens per session scan A 4254306ff099

Subscribe to this mod's changes

build-action-webhook is a skill published in the GitHub repository genudo-ai/genudo_mcp (0 stars, last pushed 10d ago), licensed MIT. It adds 101 tokens to every session and 510 once invoked, about $0.0005 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.