data-integrity skillA
data-integrity is agent-read markdown (skill) from nahid-sparktales/agent-dispatcher: Keep data correct over time — write the invariants down, push each one to the lowest layer that can enforce it, cover the rest with reconciliation queries, and detect drift before a user reports it. Use when deciding where a rule should be enforced, auditing a schema whose rules live only in application code, building reconciliation or drift checks, or investigating data that looks wrong. Not for sequencing a schema change (migrations) or proving one migration's outcome (database-migration-verif.
Indexed from public GitHub and served as immutable, content-addressed versions. Install it pinned to an exact SHA-256 with the mdr CLI, and every file is verified against the hash recorded here before it reaches your agent. The deterministic audit below grades the latest version, and the same file always earns the same grade.
What the file says
# Data integrity Application-level validation runs on the paths that call it. A backfill, an admin console, a second service, a support script and a psql session all bypass it. Anything that must always be true has to be enforced somewhere every writer goes through, or measured continuously — preferably both. ## When this fires You are deciding where a rule is enforced, auditing a schema whose rules exist only as guard clauses in code, building reconciliation or drift checks, or looking at data that is suspected to be wrong. It does not fire for the sequencing of a specific schema change, or for verifying one migration. ## Procedure 1. **Write the invariants down as sentences about the data.** "An order has exactly one customer." "A ledger's entries sum to its stored balance." "A subscription's end is never before its start." Harvest them from the domain, from the guard clauses already in the code, and from the bug history — past incidents are invariants that were discovered the expensive way. An unwritten invariant is enforced inconsistently by definition. 2. **For each one, find where it is enforced today.** Database constraint, application code, a …
Read the whole file at its exact version.
How to install
mdr add nahid-sparktales/agent-dispatcher/data-integrity@git:20260919.a0d4f55mdr add nahid-sparktales/agent-dispatcher/data-integrity@sha256:77708e6e8e93cfb9Pin to a label to follow the author's releases, or to a sha256 to freeze the exact bytes forever. Either way the resolved hash is written to mdr.lock, and mdr install reproduces it on any machine.
[](https://markdownregistry.com/a/art_5qp56ym5yjamqded)
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Versions
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 (6584 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 · 49 stars · license MIT · pushed 2026-09-23 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_5qp56ym5yjamqded GET https://markdownregistry.com/api/v1/resolve?ref=nahid-sparktales/agent-dispatcher/data-integrity GET https://markdownregistry.com/api/v1/blob/77708e6e8e93cfb96b89a474a1a8e3d4d3cc9b41bef1097d88235e78baed6ef5
Your agent 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.