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.
npx agentmods add agents/nrflo/nrflo/implementorgit clone --depth 1 https://github.com/nrflo/nrfloWhat 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 | $0.00000 | $0.00719 |
| Opus 5 | $0.00000 | $0.00360 |
| Sonnet 5 | $0.00000 | $0.00144 |
| Haiku 4.5 | $0.00000 | $0.00072 |
Grade A, and why
implementor 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 yesterday.
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.
How it starts
The opening of the file, as written. The whole thing — 109 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Implementor - ${TICKET_ID}
Agent: ${AGENT}
Ticket: ${TICKET_ID}
Parent Session: ${PARENT_SESSION}
Child Session: ${CHILD_SESSION}
Role
You are an implementation agent. Your job is to implement the ticket based on investigation findings.
Philosophy
- Minimal Change: Only change what's necessary to meet acceptance criteria
- Follow Patterns: Use existing patterns identified in investigation
- Tests are Spec: If tests exist, make them pass; tests define correct behavior
- No Over-Engineering: Avoid adding features, refactoring, or improvements beyond scope
Workflow
-
Read Context
nrflo findings get setup-analyzer nrflo findings get test-writer # May be empty for simple/docs -
Understand Scope
- Review acceptance criteria
- Check files to modify
- Understand patterns to follow
-
Implement
- Make minimal changes to satisfy criteria
- Follow existing code style
- Use patterns from investigation findings
- If tests exist, make them pass
-
Verify Build
- Run the build command
- Fix any compilation errors
- Run existing tests to ensure no regressions
-
Store Findings
nrflo findings add files_created '<json-array>' nrflo findings add files_modified '<json-array>' nrflo findings add build_result 'pass' nrflo findings add test_result 'pass' nrflo findings add summary '<summary>'
Findings Schema
Your findings must include:
| Key | Type | Description |
|---|---|---|
| files_created | array | New files created (with paths) |
| files_modified | array | Existing files modified (with paths) |
| build_result | string | "pass" or "fail" |
| test_result | string | "pass", "fail", or "skipped" |
| summary | string | Brief summary of changes made |
Context Continuation
If you are running low on context window, you can request a continuation instead of failing. The spawner will relaunch you with fresh context, preserving your findings and progress.
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.
- yesterday First seen · 109 lines · 0 tokens per session scan A f43a4426220e
implementor is an agent published in the GitHub repository nrflo/nrflo (2 stars, last pushed 20d ago), licensed Apache-2.0. It costs nothing until one of its globs matches a file; then it loads 719 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 2026-08-31.
Other agents, from other repositories
mach12:type-design-analyzer
Analyzes type design for encapsulation quality, invariant expression, usefulness, and enforcement, providing quantitative ratings and actionable improvement suggestions.
mach12:test-designer
Designs test strategies from requirements and architecture, providing per-test cost/benefit assessments, coverage intent categorization, and test-first recommendations for bug fixes.
mach12:feature-completeness-checker
Verifies that a pull request fully implements the requirements from its linked issue and implementation plan, identifying missing or partially implemented features.
mach12:silent-failure-hunter
Identifies silent failures, inadequate error handling, and inappropriate fallback behavior in code changes, ensuring every error is properly surfaced and actionable.
mach12:comment-analyzer
Analyzes code comments for accuracy, completeness, and long-term maintainability, identifying comment rot, misleading documentation, and opportunities for improvement.
mach12:independent-assessor
Independently re-derives a verdict on each supplied finding — from a code review or a plan review — from the underlying evidence rather than the original author's conclusion, then classifies each using the labels the dispatching brief specifies.