migrations SKILL.md skillA
migrations from nahid-sparktales/agent-dispatcher is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add nahid-sparktales/agent-dispatcher/migrations@git:20260919.a0d4f55Pins git:20260919.a0d4f55 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- nahid-sparktales/agent-dispatcher
- Path
skills/database/migrations/SKILL.md- Versions recorded
- 1
- Latest version
- git:20260919.a0d4f55, committed Sep 19, 2026
- Size
- 7,295 bytes
- Repository stars
- 58
- License
- MIT
Change a live schema without breaking the application on it — expand/contract sequencing, lock-safe DDL, batched backfills, and a rollback that is actually reachable. Use when writing, reviewing or sequencing a migration that will run against a database holding real data with live readers. Not for designing a schema from scratch, not for proving afterwards that a migration did what it claimed (that is database-migration-verification), and it never runs the production step for you.
Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.
What the file says
# Live schema migrations A migration that passes on an empty dev database proves the SQL parses. It says nothing about how long the lock is held, whether the old application version still reads the column you dropped, or whether the rollback can reach the data. ## When this fires You are about to write, review or sequence a schema or data migration against a database that has rows in it and something reading them. It does not fire for greenfield schema design, for a throwaway local database, or for a query change with no DDL. ## Procedure 1. **Read the current state before writing any SQL.** The live schema, the migration history, and every reader of the objects you are touching — grep the application, the reports, the jobs, the other services. A column no code in this repo reads may still be read by a deployed older version. Name the readers you found; say if you could not enumerate them. 2. **Classify the change.** *Additive* (new table, new nullable column, new index), *rewriting* (type change, adding NOT NULL or a unique constraint to existing data, renaming, dropping), or …
Read the whole file at its exact version.
How to install
mdr add nahid-sparktales/agent-dispatcher/migrations@sha256:0c47e48966b31a62The line at the top of this page pins the label git:20260919.a0d4f55, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.
[](https://markdownregistry.com/a/art_nznevpdxxwnpiek4)
4 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 1 version of this file, committed on Sep 19, 2026.
Audit of the latest version
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (7295 bytes)
- pass: No zero-width or bidi control characters
- pass: No instruction hidden inside an HTML comment
- pass: No link to an exfiltration or paste host
- pass: No credential-shaped string
- pass: No instruction to send local credentials anywhere
- pass: No text hidden with inline styles
- pass: No prompt-injection phrasing
- pass: No curl or wget piped into a shell
- pass: No recursive delete of root, home or parent
- pass: No instruction to read or print local credentials
- pass: No base64 blob over 200 characters
- pass: No link to a raw IP address
- pass: No script tag
Source
nahid-sparktales/agent-dispatcher · 58 stars · license MIT · pushed 2026-10-24 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_nznevpdxxwnpiek4 GET https://markdownregistry.com/api/v1/resolve?ref=nahid-sparktales/agent-dispatcher/migrations GET https://markdownregistry.com/api/v1/blob/0c47e48966b31a626044dbea18eb969e96b0a4228cdc2d50426b22f3cd9922a4
Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.
Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.