claude-p SKILL.md skillA
claude-p from valtterimelkko/agent-workflow-skills is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add valtterimelkko/agent-workflow-skills/claude-p@git:20260611.b2584e4Pins git:20260611.b2584e4 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- valtterimelkko/agent-workflow-skills
- Path
skills/claude-p/SKILL.md- Versions recorded
- 1
- Latest version
- git:20260611.b2584e4, committed Jun 11, 2026
- Size
- 9,668 bytes
- Repository stars
- 2
- License
- MIT
Use when running multi-turn Claude Code CLI sessions programmatically via 'claude -p', integrating Claude into server-side processes, handling stream-json output, managing session continuity across turns, or building systems that spawn claude subprocesses. ALWAYS use when: spawning claude -p subprocesses, handling 'Session ID already in use' errors, working with --session-id vs --resume flags, parsing stream-json events, or implementing Claude Direct-style session management. Covers subprocess…
Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.
What the file says
# claude -p Skill
A reference for using `claude -p` (non-interactive print mode) to run Claude Code sessions programmatically — particularly for multi-turn conversations in server-side code.
This is the **direct CLI approach**, not the Claude Agent SDK. The key binary is `claude`, authenticated via `claude auth login` (subscription auth).
---
## Core invocation
```bash
claude -p "your prompt" \
--output-format stream-json \
--verbose \
--permission-mode acceptEdits \
--model sonnet \
--session-id <uuid> # first turn only — see below
```
`--output-format stream-json --verbose` is required together: `stream-json` alone is rejected in `-p` mode without `--verbose`.
### Auth: subscription, not API key
```typescript
const env = { ...process.env };
delete env.ANTHROPIC_API_KEY; // forces subscription auth
delete env.ANTHROPIC_AUTH_TOKEN; // forces subscription auth
// Claude reads <CLAUDE_HOME>/ credentials automatically
```
Check auth status:
```bash
claude auth status --json # correct flag
# NOT: --output-format json # wrong, will error
```
---
## Multi-turn sessions — the critical distinction
…Read the whole file at its exact version.
How to install
mdr add valtterimelkko/agent-workflow-skills/claude-p@sha256:c055adefe44a66e3The line at the top of this page pins the label git:20260611.b2584e4, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.
[](https://markdownregistry.com/a/art_22tymysboxwhxqxd)
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Versions
The registry has recorded 1 version of this file, committed on Jun 11, 2026.
Audit of the latest version
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (9668 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
valtterimelkko/agent-workflow-skills · 2 stars · license MIT · pushed 2026-10-28 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_22tymysboxwhxqxd GET https://markdownregistry.com/api/v1/resolve?ref=valtterimelkko/agent-workflow-skills/claude-p GET https://markdownregistry.com/api/v1/blob/c055adefe44a66e348fbbd9106aa97a95168bda68f774faf874ad307a4523f1d
Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.
Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.