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Agent skill

Grammarly API Reliability

by jeremylongshore in jeremylongshore/tons-of-skills-marketplace

Analyze a sanitized Grammarly asynchronous job receipt without sending requests, reading document content, or guessing provider SLAs.

MITAuto-check passedDevelopment

Install Grammarly API Reliability

skills CLI
$ npx skills add jeremylongshore/tons-of-skills-marketplace --skill grammarly-api-reliability -a claude-code

Project install by default; add -g for ~/.claude/skills/.

GitHub CLI
$ gh skill install jeremylongshore/tons-of-skills-marketplace grammarly-api-reliability --agent claude-code

Project scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).

Manual copy
$ git clone --depth 1 https://github.com/jeremylongshore/tons-of-skills-marketplace.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/.curated/grammarly-api-reliability .claude/skills/grammarly-api-reliability && rm -rf skills-src

Use ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.

Claude Code skills documentation · loads skills from .claude/skills/

Facts

Skill name
grammarly-api-reliability
GitHub stars
2.8k
Token cost
~1.4k tokens
SKILL.md length
563 words
Files
5 (incl. scripts, references)
Skills in repo
3,342
Repo updated
First seen
Licence
MIT

At a glance

Analyze a sanitized Grammarly asynchronous job receipt without sending requests, reading document content, or guessing provider SLAs.

  • Works in 3 steps: Run the deterministic analyzer → Apply the decision rules → Enforce the safety boundaries
  • A Writing Score
  • SKILL.md covers Overview, Prerequisites, Instructions and Output, plus 4 more sections
  • Runs Python scripts from its folder; calls python3

What it does

Grammarly API Reliability is an agent skill from jeremylongshore/tons-of-skills-marketplace. Analyze a sanitized Grammarly asynchronous job receipt without sending requests, reading document content, or guessing provider SLAs. Use when a Writing Score or similar document job is PENDING, FAILED, or COMPLETED and a bounded retry decision is needed. Trigger with "analyze Grammarly job receipt", "Grammarly 429 retry", or "Grammarly job status".

Its SKILL.md is about 1.4k tokens, which your agent loads only when the skill is triggered. The skill folder holds 6 other files, including scripts and reference files (for example `eval-spec.yaml`, `references/official-contract.md` and `references/receipt-schema.md`). Compatibility notes: Agent Skills-compatible hosts; requires Python 3.10+

It sits in Development, covering Async programming. The repository describes itself as: Model-agnostic agent-skills platform with a harness-free canonical layer, verified adapters, and the ccpi package manager. Explore at tonsofskills.com. The licence is MIT.

When your agent uses it

  • A Writing Score
  • Similar document job is PENDING
  • COMPLETED and a bounded retry decision is needed
  • With analyze Grammarly job receipt

Example prompts

  • “analyze Grammarly job receipt”
  • “Grammarly 429 retry”
  • “Grammarly job status”
  • “/grammarly-api-reliability”

Requirements

  • Python 3
  • Compatibility (from SKILL.md): Agent Skills-compatible hosts; requires Python 3.10+
  • Pre-approved tools (allowed-tools): Bash(python3:*)

Workflow steps

3 steps, taken from the step headings in SKILL.md.

  1. Run the deterministic analyzer
  2. Apply the decision rules
  3. Enforce the safety boundaries

What it can do on your machine

Read from SKILL.md and the folder at commit 80f86df. It shows what the files ask for, not the result of running them.

  • Tool permissions

    Pre-approves these tools, so the agent can use them without asking each time:

    • Bash(python3:*)

    From allowed-tools in the SKILL.md frontmatter.

  • Runs code

    Ships 1 file in scripts/ (Python), which the agent can run.

    Shell commands in SKILL.md call:

    • python3

    From the folder's file list and the shell code blocks in SKILL.md.

  • Network

    Links to these hosts (documentation or services it may open):

    • developer.grammarly.com

    From URLs in SKILL.md, links to its own repository left out.

  • Credentials

    Names no API keys, tokens, secrets or passwords.

    From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.

  • Compatibility

    Agent Skills-compatible hosts; requires Python 3.10+

    From compatibility in the SKILL.md frontmatter.

Context cost

Grammarly API Reliability loads about 1.4k tokens when it runs, and up to ~2.2k if it reads all its reference files. Until then it costs about 94 tokens; SKILL.md has 563 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~94
When it runs · the whole SKILL.md, loaded when a task matches
~1.4k
With references · SKILL.md plus every file in references/, read only if the agent opens them
~2.2k

Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.

Safety

Auto-check passed

The automated check found no risky patterns in SKILL.md.

Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); the scripts in this folder are not scanned.

SKILL.md

The full file from jeremylongshore/tons-of-skills-marketplace at commit 80f86df, republished under its MIT licence (© jeremylongshore). 563 words, ~1,367 tokens.

Download SKILL.mdSave it as .claude/skills/grammarly-api-reliability/SKILL.md (or your agent's skills folder). This skill also uses 4 other files; get the full folder from GitHub.
name
grammarly-api-reliability
description
Analyze a sanitized Grammarly asynchronous job receipt without sending requests, reading document content, or guessing provider SLAs. Use when a Writing Score or similar document job is PENDING, FAILED, or COMPLETED and a bounded retry decision is needed. Trigger with "analyze Grammarly job receipt", "Grammarly 429 retry", or "Grammarly job status".
allowed-tools
Bash(python3:*)
compatibility
Agent Skills-compatible hosts; requires Python 3.10+
version
2.0.0
author
Jeremy Longshore <jeremy@intentsolutions.io>
license
MIT
tags
saas, grammarly, reliability, retries, privacy

Grammarly API Reliability

This is a read-only, metadata-only decision aid for asynchronous Grammarly jobs. It does not call Grammarly, upload text, inspect a response body, create a token, or retry a request. It turns one strict JSON receipt into a bounded, evidence-labeled classification.

Overview

Use this skill to classify a sanitized asynchronous receipt without treating a provider response as permission to retry blindly.

Prerequisites

No credentials, network access, Grammarly account, document, or response body is needed. Python 3.10+ is the only runtime requirement. If a separate live integration is being designed, use the official OAuth 2.0 credentials documentation (accessed 2026-09-04) to determine access; live authentication and requests are outside this skill.

Instructions

Step 1: Run the deterministic analyzer

Run the bundled script against a receipt file or standard input:

bash
python3 scripts/analyze_job_receipt.py receipt.json
cat receipt.json | python3 scripts/analyze_job_receipt.py -
python3 scripts/analyze_job_receipt.py --self-test

The analyzer accepts only the documented metadata schema in references/receipt-schema.md. It recursively rejects keys associated with document content, bodies, text, headers, or tokens, including those hidden in an otherwise unknown nested object. Unknown keys, malformed values, inconsistent 429 evidence, and attempts above the cap fail closed.

Step 2: Apply the decision rules
  • COMPLETED is terminal. Do not retry it.
  • PENDING is not a failure. Report that the receipt is still pending; do not invent a polling interval, timeout, SLA, quota, or freshness guarantee.
  • FAILED with http_status: 429 is the only status-specific retry class in this skill. If a numeric retry_after_seconds value is supplied, the output preserves that evidence as the wait instruction. If it is absent, the output names Grammarly's documented 2-second-base exponential-backoff guidance for 429 only; it does not invent a maximum, jitter rule, quota, or service promise.
  • Any failure without 429 evidence is MANUAL_REVIEW: the receipt alone does not establish that retrying is safe.
  • A failed receipt at attempts == max_attempts is ATTEMPT_CAP_REACHED and must not receive retry guidance. An input with attempts > max_attempts is invalid.

The cap is caller-supplied policy, not a Grammarly limit. The analyzer never changes the cap or performs the next attempt. A human or caller-owned controller must decide whether a retry is appropriate after reviewing the emitted classification.

Show full SKILL.md (220 more words)Show less
Step 3: Enforce the safety boundaries

Use synthetic receipts for evaluation. Never paste document text, raw request or response bodies, HTTP headers, access tokens, authorization values, or secrets. The script is standard-library-only and has no network, filesystem-write, subprocess, or deletion behavior. It reports validation errors rather than trying to sanitize unsafe input.

Read the focused references only when needed:

Output

The JSON result names the accepted status, attempts, cap, classification, and a short evidence-bounded guidance string. It never echoes submitted metadata beyond those safe scalar fields and never fabricates an SLA, timeout, quota, result body, or document diagnosis.

Error Handling

Invalid JSON, forbidden recursive keys, unknown fields, unsupported statuses, contradictory 429 evidence, and cap violations are errors. The script exits non-zero and emits no classification. A valid non-429 failure is MANUAL_REVIEW, not a retry recommendation.

Examples

  • A completed receipt returns COMPLETED_TERMINAL and no retry instruction.
  • A failed 429 with retry_after_seconds: 17 returns RETRY_AFTER_EVIDENCE and preserves 17 seconds.
  • A nested diagnostics.response_body or credentials.access_token field is rejected before classification.

Resources

Official source

Grammarly Writing Score API (accessed 2026-09-04).

© jeremylongshore, MIT. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file

Files

SKILL.md and 4 other files (scripts, references) in skills/.curated/grammarly-api-reliability of jeremylongshore/tons-of-skills-marketplace.

  • SKILL.md
  • eval-spec.yaml
  • references/official-contract.md
  • references/receipt-schema.md
  • scripts/analyze_job_receipt.py

Open the folder on GitHubat commit 80f86df

Compare with similar skills

Grammarly API Reliability next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.

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Rust Async Patternsdiodeme/Gold-Band14310 repos~3.1kAutomated safety check: PassAGPL-3.0
Swift Concurrencyhenrypldev/react-native-nitro-mlx1003 repos~3.1kAutomated safety check: PassMIT

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Categories

Questions about Grammarly API Reliability

What does Grammarly API Reliability do?

Analyze a sanitized Grammarly asynchronous job receipt without sending requests, reading document content, or guessing provider SLAs. Grammarly API Reliability is an agent skill from jeremylongshore/tons-of-skills-marketplace. Analyze a sanitized Grammarly asynchronous job receipt without sending requests, reading document content, or guessing provider SLAs.

When should I use Grammarly API Reliability?

Grammarly API Reliability fits situations like: A Writing Score; similar document job is PENDING; COMPLETED and a bounded retry decision is needed; with analyze Grammarly job receipt.

How do I install Grammarly API Reliability in Claude Code?

Run `npx skills add jeremylongshore/tons-of-skills-marketplace --skill grammarly-api-reliability -a claude-code`. Or copy the skill folder (skills/.curated/grammarly-api-reliability in jeremylongshore/tons-of-skills-marketplace) into .claude/skills/grammarly-api-reliability in your project. Claude Code loads it when a task matches its description.

How do I install Grammarly API Reliability in Codex?

Run `npx skills add jeremylongshore/tons-of-skills-marketplace --skill grammarly-api-reliability -a codex`. Or copy the skill folder (skills/.curated/grammarly-api-reliability in jeremylongshore/tons-of-skills-marketplace) into .agents/skills/grammarly-api-reliability in your project. Codex loads it when a task matches its description.

Can I use Grammarly API Reliability in Cursor, Gemini CLI or GitHub Copilot?

Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add jeremylongshore/tons-of-skills-marketplace --skill grammarly-api-reliability -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/grammarly-api-reliability, .gemini/skills/grammarly-api-reliability, .github/skills/grammarly-api-reliability and .opencode/skills/grammarly-api-reliability in your project.

What does Grammarly API Reliability need to run?

Going by SKILL.md and its folder, Grammarly API Reliability needs Python for the scripts in its folder and the command-line tools its instructions call (python3). Our summary lists: Python 3. Its frontmatter pre-approves these tools: Bash(python3:*). Compatibility (from SKILL.md): Agent Skills-compatible hosts; requires Python 3.10+.

Does Grammarly API Reliability access the network?

SKILL.md names 1 domain. As links in the text: developer.grammarly.com. This is read from the text; nothing was executed.

Is Grammarly API Reliability safe to install?

Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. The check reads SKILL.md only: the scripts in the folder are not scanned, so read them before running anything.

What licence does Grammarly API Reliability use?

Grammarly API Reliability is published under the MIT licence (declared in SKILL.md). It allows redistribution, so the full SKILL.md is shown on this page.

How many tokens does Grammarly API Reliability use?

About 1.4k tokens (SKILL.md is roughly 5.5k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full. Its references folder adds about 842 tokens, read only when the agent opens those files.

What are the alternatives to Grammarly API Reliability?

Skills that share tags, products or a category with Grammarly API Reliability: YugabyteDB ASH Instrumentation (yugabyte/yugabyte-db, 11k stars), Mirage VFS Adapter Authoring (strukto-ai/mirage, 3.7k stars), Golang Patterns (antoniopaya22/go-rest-template, 172 stars) and Rust Async Patterns (diodeme/Gold-Band, 143 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Grammarly API Reliability?

jeremylongshore (a GitHub user) maintains it in jeremylongshore/tons-of-skills-marketplace, which has 2,825 GitHub stars. The repository holds 3,342 skills in this directory. The repository was last updated on October 9, 2026.

Source: jeremylongshore/tons-of-skills-marketplace on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.