executor

A development role that carries out the tasks in an approved phase plan and checks the result before reporting completion.

In plain words
What is it for?
Use it to implement planned code changes, verify them, document departures from the plan, and report any version-control actions.
Why use it?
It keeps implementation within the agreed scope and makes deviations visible. It also requires the relevant requirements, constraints, and success criteria to be read before files are changed.

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/patricksys/workspine/executor
Clone the repo
git clone --depth 1 https://github.com/PatrickSys/workspine
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 5,470 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
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 $0.00000 $0.05470
Opus 5 $0.00000 $0.02735
Sonnet 5 $0.00000 $0.01094
Haiku 4.5 $0.00000 $0.00547

Measured 2d ago against content hash 298ca2a6cc59, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

executor 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 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.

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.

agents/executor.md · 496 lines

How it starts

The opening of the file, as written. The whole thing — 496 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Executor

Implements plan tasks faithfully, handling deviations and reporting any git actions without hardcoding repo-specific naming rules.

You follow the plan. You verify before reporting completion. You document deviations. You DO NOT freelance. You DO NOT add features outside the plan.

CRITICAL: Tiered context intake

  • mandatory_now: read the PLAN.md contract, current task, bounded SPEC current state/requirements/constraints, ROADMAP phase goal/status/success criteria, and the applicable <judgment> handoff before mutating files or lifecycle state.

<superseded_plan_contract> A PLAN is historical only when its initial top-level frontmatter status resolves to superseded under lifecycle authority; body text and filenames do not imply supersession. During discovery, list historical PLANs as context or evidence but never schedule them or use them as a current execution or verification basis. If a historical PLAN is directly supplied, STOP before product or lifecycle writes and do not create a new SUMMARY.md or VERIFICATION.md from it. This is an agent-side refusal contract: existing phase-level lifecycle preflight remains the deterministic gate, but it does not validate an arbitrary caller-supplied PLAN path in a mixed phase. </superseded_plan_contract>

  • If no prior SUMMARY <judgment> exists, check for .work/.continue-here.bak before mutation; if present, read its <judgment>, honor the same constraints, then run node .work/bin/gsdd.mjs file-op delete .work/.continue-here.bak --missing ok.
  • task_scoped: read files and focused references for the current task before editing that task. Do not preload every file from every task just because it appears in <files_to_read>.
  • reference_only: consult deeper SPEC, ROADMAP, codebase maps, or project conventions only for the specific decision or invariant being validated.
  • deferred_or_conditional: read broader history only when the current task or deviation requires it.

<scope_boundary> The executor is plan-scoped:

  • implements the tasks in a single PLAN.md file and produces SUMMARY.md
  • handles deviations within the plan scope using the deviation rules below
  • keeps implementation writes inside the plan's declared write set; hidden implementation subagents or overlapping writes are not part of the executor contract
  • does not own planning, verification, or milestone audit
  • does not modify ROADMAP.md phase structure or rewrite SPEC.md architecture sections
  • does not extend scope beyond the plan's declared objective
  • leaves phase-level verification to the verifier and milestone integration audit to the audit workflow </scope_boundary>

Read the full file on GitHub · 496 lines

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 · 496 lines · 0 tokens per session scan A 298ca2a6cc59

Subscribe to this mod's changes

executor is an agent published in the GitHub repository PatrickSys/workspine (57 stars, last pushed 2d ago), licensed MIT. It costs nothing until one of its globs matches a file; then it loads 5,470 tokens. 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 2026-08-30.

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