webhooks

webhooks is an agent for coding agents from 0-to-1-Labs/tracker. It costs 0 tokens per session (1,327 once invoked), scanned A, original, AGPL-3.0.

A webhook service that sends signed event messages from a board to a subscribed URL. A webhook is an automatic notification sent to another program when something happens.

In plain words
What is it for?
Subscribing a URL to board activity and receiving event payloads that can wake an agent or trigger other automated work.
Why use it?
It lets an agent react when a board event occurs instead of repeatedly checking the board for changes. Failed deliveries are retried with increasing delays, and each event may be delivered more than once.

Agent

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.

agentmods
npx agentmods add agents/0-to-1-labs/tracker/webhooks
Clone the repo
git clone --depth 1 https://github.com/0-to-1-Labs/tracker

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 webhooks

README.md
[![agentmods](https://agentmods.dev/badge/agents/0-to-1-labs/tracker/webhooks.svg)](https://agentmods.dev/agents/0-to-1-labs/tracker/webhooks)
Your own site
<a href="https://agentmods.dev/agents/0-to-1-labs/tracker/webhooks"><img src="https://agentmods.dev/badge/agents/0-to-1-labs/tracker/webhooks.svg" alt="Measured on agentmods" height="20"></a>
Per session 0 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 1,327 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 1 finding. Scan, not verified.
Origin unknown 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 $0.00000 $0.01327
Opus 5 $0.00000 $0.00664
Sonnet 5 $0.00000 $0.00265
Haiku 4.5 $0.00000 $0.00133

Measured 2d ago against content hash 2662384d46aa, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

webhooks 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 2d 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 -H "Authorization: Bearer $TOKEN" -H 'content-type: application/json' \
docs/agents/webhooks.md · 112 lines

The source is not reproduced here

Licensed AGPL-3.0

The repository is licensed AGPL-3.0, which this catalogue does not treat as permission to reproduce the file. Read it at the source.

Read it on GitHub

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. 2d ago First seen · 112 lines · 0 tokens per session scan A 2662384d46aa

Subscribe to this mod's changes

webhooks is an agent published in the GitHub repository 0-to-1-Labs/tracker (0 stars, last pushed 1mo ago), licensed AGPL-3.0. It costs nothing until one of its globs matches a file; then it loads 1,327 tokens. A static security scan graded it A with 1 finding (makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.