Imported from Eman-Nadeem/web3geeks_mern_internship (
week3/day4/.claude/skills/prisma-mongodb-upgrade/SKILL.md). Install upstream withnpx skills add Eman-Nadeem/web3geeks_mern_internship --skill prisma-mongodb-upgrade. Copyright stays with the author (MIT).
Prisma MongoDB Upgrade Path
MongoDB projects are the one Prisma cohort with no road into Prisma 7: v6 is the terminal classic-ORM major for MongoDB, and v7 never ships a MongoDB connector. The successor path is Prisma Next, where MongoDB support is in Early Access with GA planned after Postgres. This skill frames the real decision — migrate to Prisma Next (the encouraged path), or stay on v6 where a hard blocker applies — and carries the migration mechanics.
Never do either of these:
- Never advise a MongoDB project to "upgrade to Prisma 7". The connector does not exist
there. The
prisma-upgrade-v7guide does not apply to MongoDB projects. - Never solve the version question by rewriting the app onto a SQL database. Changing the database engine is a separate, much larger decision that is not yours to make implicitly.
The version landscape
| Version | MongoDB status |
|---|---|
| Prisma ORM v6 | Fully supported (mongodb provider); latest 6.x is the current stable path; maintenance line |
| Prisma ORM v7 | No MongoDB connector — not an option, ever |
| Prisma Next | MongoDB support in Early Access, actively developed, GA planned after Postgres — the successor path for MongoDB projects |
The decision, up front
Migrating to Prisma Next is the encouraged path. MongoDB support in Prisma Next is Early Access: functional and moving quickly, with GA planned after Postgres — and the Prisma team wants MongoDB users to migrate early and share feedback. The migration mechanics are detailed in the references.
Staying on the latest v6 remains a legitimate choice where a hard blocker applies — stated plainly: the Next Mongo façade does not wrap transactions yet (the underlying driver is available directly; this is expected to change soon), and pre-1.0 minors can carry breaking changes with published upgrade recipes.
Decision table
| Signal | Direction |
|---|---|
| No blockers below apply | Migrate to Next; run the verify-cutover-checklist and share feedback with the Prisma team |
| Greenfield / prototype / internal tool | Migrate to Next |
Codebase uses multi-document transactions ($transaction) — check with grep, do not ask |
Plan raw-driver session equivalents first (see client-api-mapping), or stay on v6 until the façade wrapper lands |
| Team cannot absorb pre-1.0 breaking upgrades between minors | Stay on v6 until GA |
| Risk-averse but interested | Run a staged Next round-trip on a copy (see verify-cutover-checklist), then migrate |
Note: the transactions gap is expected to close soon — this section will be updated when façade transactions merge in Prisma Next.
If staying on v6: hygiene (a deliberate stay, not neglect)
- Pin the Prisma packages to the latest 6.x line and keep taking 6.x patch releases.
- Track Prisma release notes and security advisories for the 6.x line.
- Keep the classic v6 MongoDB setup:
url = env("DATABASE_URL")in the schema,db pushworkflow, no SQL driver adapters (seeprisma-database-setupfor the v6 MongoDB shape). - Re-evaluate when Prisma Next's MongoDB is GA, or when blockers for trying EA are resolved.
Reference files
| Reference | What it covers |
|---|---|
references/decision-stay-or-migrate.md |
The full decision framing, blocker checks, and stay-hygiene detail |
references/schema-contract-mapping.md |
v6 schema (mongodb provider, @db.ObjectId, composite types) → Next contract concepts |
references/client-api-mapping.md |
v6 client calls → Next equivalents, incl. raw escape hatches and transactions — names map, parity does not |
references/migrations-mapping.md |
v6 db push-only story → Next's plan/migrate/verify/sign flow |
references/verify-cutover-checklist.md |
No-data-moves verification: same DB, index parity, staged round-trip before cutover |
Verified against
Behavioral claims about Prisma Next in this skill were verified against
prisma/prisma-next at commit
a2791c5dd59d579b4b3052942ae7f8fe5e2ee852 (pre-1.0, ~v0.14/0.15 line). Prisma Next moves
quickly in Early Access: before acting on any Next-side claim, verify it against the
version actually installed (check the project's @prisma-next/* versions and the
prisma-next skills installed with it). Next's Mongo target requires MongoDB 8.0+ and expects
mongodb@^7 as a user-supplied peer dependency.
Hand-off rule
This skill is the discovery bridge, not a replacement for Prisma Next's own
documentation. After a project switches to Prisma Next, run Prisma Next's init/skill
installation and follow its own skills (quickstart, contract, queries, migrations, runtime)
for day-to-day work — do not keep working from this skill's summaries.