Borrowing it
Nothing to install: this file belongs to symphos-ai/orcho-core. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/symphos-ai/orcho-core/main/.agents/skills/orcho-core-runtime-session/SKILL.mdgit clone --depth 1 https://github.com/symphos-ai/orcho-coreWrote 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.
[](https://agentmods.dev/skills/symphos-ai/orcho-core/orcho-core-runtime-session)<a href="https://agentmods.dev/skills/symphos-ai/orcho-core/orcho-core-runtime-session"><img src="https://agentmods.dev/badge/skills/symphos-ai/orcho-core/orcho-core-runtime-session/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.
<a href="https://agentmods.dev/skills/symphos-ai/orcho-core/orcho-core-runtime-session"><img src="https://agentmods.dev/badge/skills/symphos-ai/orcho-core/orcho-core-runtime-session.svg" alt="Reviewed on agentmods" width="80" height="20"></a>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.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00077 | $0.00387 |
| Opus 5 | $0.00039 | $0.00193 |
| Sonnet 5 | $0.00015 | $0.00077 |
| Haiku 4.5 | $0.00008 | $0.00039 |
Grade A, and why
orcho-core-runtime-session 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 9d 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.
What it actually says
Orcho Core Runtime Session
Own the boundary between Orcho phase contracts and runtime agent context.
First Reads
orcho-core/AGENTS.mdorcho-core/pipeline/engine/session.pyorcho-core/pipeline/session_adapters.pyorcho-core/pipeline/runtime/- changed runtime under
orcho-core/agents/ - ADR 0023, 0029, or 0030 when relevant
Owns
- runtime invocation
- session reset and continuity
- runtime context autonomy
- runtime adapter contracts
- provider-session fallback behavior
Does Not Own
- prompt part rendering/cache layout ->
orcho-prompt-engine - phase lifecycle and DAG execution ->
orcho-core-phases-engine - public SDK result shape ->
orcho-core-sdk-wire
Invariants
- Runtime constructors must be side-effect free.
- Resolve external binaries lazily at first real invocation.
- Recovery is contract-failure-driven, not token-fill driven.
- Preserve settable runtime binary properties for tests/adapters.
Verification
- runtime/session unit tests
- session adapter tests
- snapshot/session parity tests when reset semantics change
Neighbor Skills
orcho-prompt-enginewhen session-aware prompt parts/cache changeorcho-core-phases-enginewhen phase lifecycle or retry sequencing changesorcho-core-isolation-worktrees-sandboxwhen cwd/worktree subjects change
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.
- 9d ago First seen · 51 lines · 77 tokens per session scan A b66ed0a50451
orcho-core-runtime-session is a skill published in the GitHub repository symphos-ai/orcho-core (5 stars, last pushed today), licensed Apache-2.0. It adds 77 tokens to every session and 387 once invoked, about $0.0004 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.
Other skills, from other repositories
review-deep
Drive the deep-review phase of an automated PR review. Consumes the walkthrough, runs the deterministic deep-review workflow (parallel lenses → adversarial validation → code-enforced threshold/caps), drafts the surviving findings, and completes the review run.
review-orchestrator
Drive an automated PR review. Produces a structured walkthrough plus inline draft comments via the octomux review CLI. NEVER posts to GitHub directly — publishing is human-gated.
review-pr
Use when reviewing a pull request, posting PR review comments, or when user says /review-pr. Reviews code with parallel agents and posts a pending GitHub review with inline comments.
review-walkthrough
Drive the walkthrough phase of an automated PR review. Produces a structured walkthrough JSON only — no inline comment drafts. The deep-review agent is attached automatically by the server after this agent finishes.
create-pr
Use when creating a pull request, opening a PR, or pushing and creating a PR for an octomux task.
ship-pr
Use to ship a change end-to-end from an octomux task — write a walkthrough, gate on a code review, open the PR, then monitor CI/comments and push fixes, finally refreshing the walkthrough. Heavier than create-pr; use when you want the full review→ship→watch loop, not just opening a PR.