Ready to supercharge your AI agents?

Install any skill in seconds. Free to start, no credit card required.

Get Started Free →

Mastra Framework · hashintel | DecimalAI

agent toolingby hashintel

Mastra Framework

hashintel/mastra

Source hashintel/hash ↗License NOASSERTION

Mastra TypeScript framework for AI agents with memory, tools, workflows, and RAG.

SkillScore83Maintained

Automatic

AI Engineer pack

Last verified 9/29/2026

What it changes

Passed 17 of 20 test cases with the skill, and 13 of 20 without it.

Without skill65%

With skill83%

Checks it passed that the model alone missed

Executes the workflow with start
Uses createStep to define processing steps
Uses RuntimeContext for request-scoped data

and 4 more in the full report

6 fixed13 passed either way2 still failing2 broke

Pass-rate lift: +17 pp
Tokens: +37%
Agent turns: 0%
Response time: -31%

Model gemini-3.6-flashMeasured 9/29/2026v119 of 23 cases passed with skill · 20 comparable

Tokens, turns and time describe resource use, not a dollar price.

Use this skill

Save it into your project's skills folder. Claude Code picks it up in its next session.

curl -fsSL --create-dirs -o .claude/skills/hashintel-mastra/SKILL.md https://app.decimal.ai/s/hashintel-mastra/SKILL.md

Want it pinned and updatable? pip install "decimalai>=0.15", then decimalai skills add hashintel-mastra, and start Claude Code with claude --plugin-dir "$(git rev-parse --show-toplevel)/.agents"

1 · One-time — install the CLI (docs ↗)

pip install "decimalai>=0.15"

2 · Get the skill — writes .agents/skills/hashintel-mastra/ and pins it in .decimal/skills.lock

decimalai skills add hashintel-mastra

No CLI? Get the same file — curl · raw file

curl -fsSL --create-dirs -o .claude/skills/hashintel-mastra/SKILL.md https://app.decimal.ai/s/hashintel-mastra/SKILL.md

Raw file: /s/hashintel-mastra/SKILL.md ↗ · machine-readable summary at /s/hashintel-mastra.json ↗

Safety checks: 3 of 3 passed

Code scan CleanIntent PassedContent Clean

See it in action

One of 6 test cases the skill fixed. Same model, same prompt, with and without the skill.

1 of 6

Prompt

We have large technical manuals in Markdown format that need to be processed into chunks with recursive or sliding window strategies before vector embedding. Which class in Mastra provides document processing and chunking?

What was checked, without and with the skill
Checked	Without skill	With skill
Instantiates MDocument for document processing	Missed	Passed

case-10 · gemini-3.6-flash · 9/29/2026 · answers are capped and redacted

What's inside

The instructions your model reads when the skill loads.

SKILL.md93 linessingle file

Mastra Framework

Open-source TypeScript framework for building AI agents with memory, tools, workflows, and RAG capabilities. Fetch the relevant documentation URL below to get current API details.

Documentation Entry Points

Getting Started and Installation

https://mastra.ai/docs/v1/getting-started/installation

Covers: create-mastra CLI, project setup wizard, Node.js 20+ prerequisites, LLM provider API keys, Studio interface (localhost:4111), manual installation, TypeScript config, example weather agent

Building Agents

https://mastra.ai/docs/v1/agents/overview

Covers: Agent definition with LLMs and tools, instruction formats (string/array/system message), provider options, agent registration in Mastra instance, generate() vs stream() methods, structured output with Zod schemas, maxSteps parameter, image processing, onStepFinish callbacks, RuntimeContext for request-specific behavior

Agent Memory

https://mastra.ai/docs/v1/memory/overview

Covers: Three memory types (working memory, conversation history, semantic recall), thread-scoped vs resource-scoped memory, storage adapters (LibSQL, MongoDB, Postgres, Upstash), context management, memory processors for token limits, tracing integration

Creating Tools

https://mastra.ai/docs/v1/agents/using-tools

Covers: Tool definition (inputSchema, outputSchema, execute), loading tools from MCP servers, RuntimeContext in tools, AbortSignal for cancellation, AI SDK tool format compatibility, Studio testing

Workflows (Deterministic Pipelines)

https://mastra.ai/docs/v1/workflows/overview

Covers: createStep() with input/output schemas, .then() chaining, .commit() finalization, workflow state sharing, nested workflows, .start() vs .stream() execution, suspend/resume, automatic restart, status tracking (running/suspended/success/failed)

RAG (Retrieval-Augmented Generation)

https://mastra.ai/docs/v1/rag/overview

Track record

Benchmark

17 / 20

test cases passed, vs 13 / 20 without

Adoption

Users: 0
Times used: 0

Safety and source details

SkillSafety

✓ 3 of 3 passed

Code scan15 of 15 checks clean

0 critical · 0 warning · 0 info — scanner v5 — 8/31/2026

View 15 scanner checks

live_secretremote_code_executionreverse_shelldata_exfiltrationssrf_metadataagent_snoopinganti_refusaldestructive_commandsobfuscated_unicodeunicode_homoglyphopaque_blobsuspicious_urltool_overreachtrigger_abuseprompt_injection_phrasing

IntentSafe

LLM judge · does the skill do what it claims

ContentClean

LLM judge · policy & harmful-content review

Source

Imported

hashintel / hash

.claude/skills/mastra/SKILL.md

View on GitHub ↗

License AGPL-3.0Imported 8/31/2026Version v1

More skills from the same source and nearby in the registry, with their headline benchmark lift.

Ready to supercharge your AI agents?

See it in action

What's inside

Mastra Framework

Documentation Entry Points

Getting Started and Installation

Building Agents

Agent Memory

Creating Tools

Workflows (Deterministic Pipelines)

RAG (Retrieval-Augmented Generation)

Track record

Benchmark

Adoption

SkillSafety

Source

Related skills