BD Newsletter Generator
Create engaging email newsletters that subscribers actually open and read. 10 newsletter templates: weekly digest, promotional, welcome series, re-engagement, product launch, curated links, story-driven, interview, case study, and seasonal formats. 50+ subject line formulas with open rate benchmarks by industry. Content pillars framework to balance tips, stories, offers, and community content. Send time optimization guide with best days and times per industry. Subscriber segmentation strategies for targeted campaigns. A/B testing framework for subject lines and content. Includes 3 real newsletter examples (SaaS, e-commerce, creator) and 3 Python scripts. For newsletter creators, content marketers, and businesses who want subscribers to actually read their emails.
Create engaging email newsletters that subscribers actually open and read.
As a process D 39/100 · Unfinished process — weak spots: result and completion, when it triggers, inputs and preconditions
How to improve
- Say in the description WHEN to use the skill ("use when…", example requests): that is the agent's main cue.
- Your own cases (evals/evals.json, 4–6 real requests with expected answers): the full check would then run those instead of a model-drafted suite.
- A spec.yaml with trigger phrases and assertions — a behaviour contract for CI; `skilltest init` writes a template.
Guard findings · 0
✓ No critical or high findings
Files scanned: 2. Evidence is masked. Grey chips explain why severity was lowered.
Against the Agent Skills spec
- warning
name-formatname should be kebab-case (lowercase letters, digits, hyphens) - warning
description-no-whendescription does not say WHEN to use the skill (no "use when")
Process rating: all ten parameters 39/100
- 0Result and completion. Does not say what the result is
- 0Inputs and preconditions. Does not say what the process needs to start
- 0Failures and branches. Linear process with no failure handling
- 0Progress reporting. Says nothing while it works
- 20When it triggers. No condition that starts the skill
- 30Running it twice. 2 mutating operations with no state check
- 40Consistency. Frontmatter name (Newsletter Generator) differs from the folder (cofi-newsletter-gen)
- 60Tools and files. Uses tools (python) that frontmatter does not declare
- 100Steps. 17 steps
- 100Execution cost. Instruction body is 537 tokens
Everything here is measured from the skill text rather than judged by a model, so the numbers are checkable. A parameter weighs more when it is a more common reason for the process to stall.
Quality signals
- +5Description has no quoted example phrases that should trigger the skill
- +4Description does not say when NOT to use the skill (false activations)
- +3Output format is not stated: the model decides each time
- +4No input/output examples
- +1No license
- +2Single-language instructions
- +3Description length 773: enough signal without eating the budget
- +4Structure: 4 headings
- +3Step-by-step instructions: 17 items
Quality base 70; lint remarks subtract, signals add up to 100. Result: 63.