calle-ai/awesome-phone-call-agents · skills/holdline/SKILL.md

holdline skillA

holdline is agent-read markdown (skill) from calle-ai/awesome-phone-call-agents: Ask one question of many places by phone and get back only the answers the call actually established. Use for batch phone enquiries where a wrong answer is worse than no answer — supplier stock checks, capacity and availability enquiries, claim and case status, directory verification. Includes evidence checking that catches values a call returns for questions it never asked..

Indexed from public GitHub and served as immutable, content-addressed versions. Install it pinned to an exact SHA-256 with the mdr CLI, and every file is verified against the hash recorded here before it reaches your agent. The deterministic audit below grades the latest version, and the same file always earns the same grade.

How to install

Latest version
mdr add calle-ai/awesome-phone-call-agents/holdline@git:20260911.f7a3e12
Exact content
mdr add calle-ai/awesome-phone-call-agents/holdline@sha256:6c70d76fb951d189

Pin to a label to follow the author's releases, or to a sha256 to freeze the exact bytes forever. Either way the resolved hash is written to mdr.lock, and mdr install reproduces it on any machine.

Badge

mdr badge

[![mdr](https://markdownregistry.com/badge/art_btg73z6z3n47wc6z.svg)](https://markdownregistry.com/a/art_btg73z6z3n47wc6z)

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Versions

versioncommittedcommitsizeaudit
git:20260911.f7a3e12 latest2026-09-11 f7a3e12 6,347 BA view

Audit of the latest version

A  17 of 17 checks passed. Deterministic, no model, same answer every run.
  • pass: Frontmatter block present
  • pass: Frontmatter declares a name
  • pass: Frontmatter declares a description
  • pass: Size between 200 bytes and 200 KB (6347 bytes)
  • pass: No zero-width or bidi control characters
  • pass: No instruction hidden inside an HTML comment
  • pass: No link to an exfiltration or paste host
  • pass: No credential-shaped string
  • pass: No instruction to send local credentials anywhere
  • pass: No text hidden with inline styles
  • pass: No prompt-injection phrasing
  • pass: No curl or wget piped into a shell
  • pass: No recursive delete of root, home or parent
  • pass: No instruction to read or print local credentials
  • pass: No base64 blob over 200 characters
  • pass: No link to a raw IP address
  • pass: No script tag

Source

GitHub

calle-ai/awesome-phone-call-agents · 88 stars · license MIT · pushed 2026-09-11 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_btg73z6z3n47wc6z
GET https://markdownregistry.com/api/v1/resolve?ref=calle-ai/awesome-phone-call-agents/holdline
GET https://markdownregistry.com/api/v1/blob/6c70d76fb951d18969a2544478c9cb276ec2323476ce9d66449a3dff84d95e59