omnigraph/docs/user/cli.md
devin-ai-integration[bot] 1a4d2cee97
feat: inline query strings in CLI and HTTP server (#110)
* feat(MR-656): inline query strings in CLI and HTTP server

CLI:
- Add -e / --query-string <STRING> to omnigraph read and omnigraph change
- Exactly one of --query, --query-string, --alias is required (3-way XOR)
- Empty --query-string is rejected with a clear error

HTTP:
- New POST /query (read-only, clean field names: query/name/params/branch/snapshot)
- Mutations on /query are rejected with 400 -- use POST /change instead
- ChangeRequest fields polished: query (alias query_source), name (alias query_name)
- POST /read and POST /change remain byte-compatible for existing clients

Tests:
- cli.rs: -e happy-path on read/change, mutex error vs --query, empty -e rejected
- system_local.rs: inline -e read and -e change exercise the local flow
- system_remote.rs: inline -e read/change over HTTP plus direct /query 200/400
- server.rs: /query 200, /query 400 on mutation, /change legacy field alias
- openapi.rs: new /query path, QueryRequest schema, ChangeRequest field-name polish

Docs: cli.md (-e examples), cli-reference.md (read/change rows), server.md (/query)
Co-Authored-By: Ragnor Comerford <ragnor.comerford@gmail.com>

* feat(MR-656): rename read/change to query/mutate with deprecation signals

HTTP server:
- Add POST /mutate as canonical write endpoint (pairs with POST /query).
- Mark POST /read and POST /change as deprecated. Three-channel signal:
  * OpenAPI: `deprecated: true` on the operation (every codegen flags
    the generated SDK method).
  * RFC 9745: response `Deprecation: true` header on every response.
  * RFC 8288: response `Link: </successor>; rel="successor-version"`
    pointing at /query and /mutate respectively.
- Share business logic across /mutate and /change via run_mutate(); the
  /change wrapper is the only place that adds the deprecation headers.
- ChangeRequest field aliases (query_source/query_name) preserved.
- AliasCommand serde now accepts `query`/`mutate` alongside `read`/`change`.

CLI:
- Promote `omnigraph query` / `omnigraph mutate` to top-level canonical
  subcommands (clap visible_alias keeps `omnigraph read` / `omnigraph
  change` working forever).
- Promote `omnigraph lint` / `omnigraph check` to top-level (was nested
  under `omnigraph query lint`, which is now a deprecated argv shim that
  rewrites to the canonical form).
- Argv-level preprocessing prints a one-line deprecation warning to
  stderr when any legacy spelling is used. Canonical names are silent.

Tests:
- Server: /mutate works, /change emits Deprecation+Link headers, /read
  emits Deprecation+Link headers, /query carries no deprecation signal.
- OpenAPI: /read and /change flagged deprecated; /query and /mutate not.
- CLI: canonical `lint` matches deprecated `query lint` / `query check`
  output; `read` / `change` print deprecation warnings.

Docs:
- cli.md: new canonical examples; "Deprecated names" migration table.
- cli-reference.md: top-level table updated; aliases.<name>.command
  accepts both legacy and canonical spellings.
- server.md: endpoint inventory shows /query and /mutate as canonical
  and /read and /change as deprecated; dedicated section explains the
  three-channel deprecation signal.
- og-cheet-sheet.md: use new `omnigraph lint` / `omnigraph check`.
- openapi.json regenerated.

Migration is purely cosmetic — every deprecated form continues to work
indefinitely; only the spelling changes.

Co-Authored-By: Ragnor Comerford <ragnor.comerford@gmail.com>

* fix(MR-656): address Devin Review findings on /query and /change

Two issues raised by Devin Review on PR #110:

1. `POST /query` mutation-rejection error pointed at the deprecated
   `/change` endpoint instead of the canonical `/mutate`. Fixed in
   three places: the runtime error message in `server_query`, the
   utoipa 400-response description, and the handler doc comment. The
   `QueryRequest` schema docstrings in `api.rs` got the same update so
   the openapi.json bodies match. Server and openapi tests updated.

2. `execute_change_remote` serialized `ChangeRequest` directly, which
   emits the new canonical field names `query` / `name` on the wire.
   `#[serde(alias = "query_source")]` only affects deserialization, so
   a newer CLI talking to an older server would have its `/change`
   POST body fail with "missing field: query_source". Fixed by
   extracting a `legacy_change_request_body` helper that hand-rolls
   the JSON with the legacy keys (`query_source` / `query_name`), the
   same byte-stable contract `execute_read_remote` already uses
   against `/read`. Added two unit tests on the helper to lock the
   wire shape in.

Co-Authored-By: Ragnor Comerford <ragnor.comerford@gmail.com>

* docs(dev): RFC 001 — inline + stored queries, envelope, MCP

Tracked artifact consolidating the design across MR-656 (this branch),
MR-976 (Phase 1 envelope hardening parent, with MR-977/978/979/980
sub-issues), and MR-969 (stored queries + MCP).

Sections:

* Two paths, one engine — inline `/query` + `/mutate` (this PR) coexist
  with stored `/queries/{name}` (MR-969). Same `run_query` / `run_mutate`
  backend (the fold-in landed in the previous commit).
* Request envelope ("before") — Idempotency-Key, If-Match, X-Deadline,
  X-Trace-Id, expect, dry_run, fields. Phase 1 ships the load-bearing
  subset on `/mutate`.
* Response envelope ("after") — audit_id, snapshot_id, commit_id, stats,
  warnings. Closes the provenance loop today's `ChangeOutput` leaves
  open.
* `.gq` pragmas — `@description`, `@returns`, `@mcp`. Source-of-truth
  for the stored-query agent contract; no separate YAML registry.
* Multi-graph MCP — per-graph `/graphs/{id}/mcp/tools` + `/mcp/invoke`.
  Token binds to one graph by default; cross-graph agents loop.
* Cedar split — `read`/`change` for inline, `invoke_query` for stored.
  Operators deny ad-hoc for agent groups while keeping curated tool
  list open.
* Rejected alternatives — per-env override files, compiled bundles,
  tool-name prefixing across graphs, body-field graph dispatch.

Index entry added under "Active Implementation Plans" so future agents
land on the RFC before touching queries / mutations / envelope code.
`scripts/check-agents-md.sh` clean (35 links, 34 docs).

* docs(server): clarify why run_query lacks AppState parameter

run_mutate takes state for workload admission; run_query doesn't because
reads aren't admission-gated today. Mark the asymmetry as intentional and
flag the two future events that would grow the signature: Phase 1's
`expect: { max_rows_scanned: N }` budget (MR-976) or per-actor admission
extending to stored-read invocations (MR-969). Prevents the natural
"make these symmetrical" follow-up.

* refactor(server): run_query / run_mutate take &ResolvedActor

Replace `Option<Extension<ResolvedActor>>` in the helpers with
`Option<&ResolvedActor>`. Saves MR-969's stored-query handler from
wrapping a bare actor in axum's `Extension(...)` before calling.
Handler signatures (`server_query`, `server_read`, `server_mutate`,
`server_change`) keep `Option<Extension<ResolvedActor>>` because that
is what axum injects, and unwrap at the call site with
`actor.as_ref().map(|Extension(actor)| actor)`.

Net: -13/+10 LOC, 89/0 server tests pass.

* docs(releases): v0.6.0 — describe inline + canonical-named queries (MR-656)

Extend the v0.6.0 release notes to cover the third piece of work landing
alongside the graph terminology rename and multi-graph server mode:
canonical-named `POST /query` and `POST /mutate` endpoints, the CLI's
new `-e/--query-string` flag, the top-level promotion of `lint` /
`check`, and the three-channel deprecation signal on `/read` and
`/change` (OpenAPI `deprecated: true` + RFC 9745 + RFC 8288).

Additions:

* Top blurb: "Two pieces" -> "Three pieces" with a bullet describing
  the rename + inline flow.
* Breaking Changes: new "Query / mutation rename" subsection covering
  the `ChangeRequest` field rename (with the back-compat serde aliases
  and the CLI's `legacy_change_request_body` byte-stable wire helper)
  and the `omnigraph query lint` -> `omnigraph lint` move.
* New: 5 bullets — the two endpoints, the CLI subcommands, the `-e`
  flag, the deprecation signal channels, the widened `aliases.<name>.command`
  vocabulary.
* User Impact: one bullet making explicit that the rename is cosmetic
  on the client side and migration is voluntary.
* Documentation: pointers to the updated `server.md` / `cli.md` /
  `cli-reference.md` and the new `docs/dev/rfc-001-queries-envelope-mcp.md`.

+15/-1 lines. `./scripts/check-agents-md.sh` clean.

* refactor(cli): demote `check` from visible_alias to deprecation shim

`omnigraph check` was a clap `visible_alias` on `lint`, advertised in
`--help` as an equivalent canonical name. Per MR-981 §6 (long-form
flags as canonical, short forms as visible aliases), visible aliases
on subcommand names hurt agent CX: agents emit either spelling
depending on training-data drift, and there's no length signal
pointing at the canonical name.

Changes:

* Remove `#[command(visible_alias = "check")]` from the `Lint` variant.
  `omnigraph --help` now shows only `lint`.
* Add bare `check` to `rewrite_deprecated_argv` so `omnigraph check
  <args>` still works — it rewrites to `omnigraph lint <args>` and
  emits a one-line stderr deprecation warning, matching the existing
  pattern for `read` / `change` / `query lint` / `query check`.
* Fix the nested `query check` shim to substitute `check` -> `lint` in
  the rewritten argv (previously it relied on `check` being a
  visible_alias to reach the `Lint` variant).
* New test `deprecated_check_top_level_rewrites_to_lint` covers: bare
  `check` produces identical stdout to `lint`, emits the deprecation
  warning, and `check` does NOT appear as an alias in `omnigraph
  --help`.
* Release notes updated to reflect the deprecation-shim treatment and
  cross-reference MR-981 §6 reasoning.

Cargo / Go users typing `check` still work indefinitely; one stderr
nudge per invocation teaches the canonical name. Agents see only
`lint` in `--help --json` so they emit one canonical form.

67/0 omnigraph-cli tests pass; 39 workspace test suites green.

---------

Co-authored-by: Devin AI <158243242+devin-ai-integration[bot]@users.noreply.github.com>
Co-authored-by: Ragnor Comerford <ragnor.comerford@gmail.com>
Co-authored-by: Ragnor Comerford <hello@ragnor.co>
2026-05-29 13:41:54 +02:00

6.3 KiB

CLI Guide

Core Graph Flow

omnigraph init --schema ./schema.pg ./graph.omni
omnigraph load --data ./data.jsonl --mode overwrite ./graph.omni
omnigraph snapshot ./graph.omni --branch main --json
omnigraph query  --uri ./graph.omni --query ./queries.gq --name get_person --params '{"name":"Alice"}'
omnigraph mutate --uri ./graph.omni --query ./queries.gq --name insert_person --params '{"name":"Mina","age":28}'

omnigraph query is the canonical read command (pairs with POST /query); omnigraph mutate is the canonical write command (pairs with POST /mutate). The previous names omnigraph read and omnigraph change keep working as visible aliases — invocations emit a one-line deprecation warning to stderr and otherwise behave identically. See Deprecated names for the migration table.

For ad-hoc reads and mutations (REPLs, AI agents, one-off scripts), pass the GQ source inline with -e / --query-string instead of a file path:

omnigraph query --uri ./graph.omni \
  -e 'query find($name: String) { match { $p: Person { name: $name } } return { $p.name, $p.age } }' \
  --params '{"name":"Alice"}'

omnigraph mutate --uri ./graph.omni \
  -e 'query add($name: String, $age: I32) { insert Person { name: $name, age: $age } }' \
  --params '{"name":"Inline","age":42}'

-e is mutually exclusive with --query <path> and --alias <name>; exactly one of the three must be provided. The inline source travels through the same parser, lint, params binding, and commit machinery as a file-based query — only the source loader changes.

Branching And Reviewable Data Flows

omnigraph branch create --uri ./graph.omni --from main feature-x
omnigraph branch list --uri ./graph.omni
omnigraph branch merge --uri ./graph.omni feature-x --into main

omnigraph ingest --data ./batch.jsonl --branch review/import-2026-04-09 ./graph.omni
omnigraph export ./graph.omni --branch main --type Person > people.jsonl
omnigraph commit list ./graph.omni --branch main --json
omnigraph commit show --uri ./graph.omni <commit-id> --json

Remote Server Mode

Serve a graph:

omnigraph-server ./graph.omni --bind 127.0.0.1:8080

Read through the HTTP API:

omnigraph query \
  --target http://127.0.0.1:8080 \
  --query ./queries.gq \
  --name get_person \
  --params '{"name":"Alice"}'

If the server requires auth, set OMNIGRAPH_SERVER_BEARER_TOKEN on the server and configure the matching bearer_token_env in omnigraph.yaml.

Multi-graph servers (v0.6.0+)

Against a multi-graph server (started with --config omnigraph.yaml referencing a non-empty graphs: map), use omnigraph graphs list to enumerate the registered graphs. The server must configure bearer tokens and server.policy.file with a rule that allows graph_list; /graphs is closed by default even when the server runs with --unauthenticated.

OMNIGRAPH_BEARER_TOKEN=admin-token \
  omnigraph graphs list --uri http://server.example.com --json

For config-driven clients, set the remote graph's bearer_token_env to an environment variable containing a token whose actor is authorized by server.policy.file.

list rejects local URI targets — it's for remote multi-graph servers only.

Runtime add/remove is not in v0.6.0. To add a graph, stop the server, add a graphs.<id> entry to omnigraph.yaml, then restart. To remove, stop the server, delete the entry, restart.

Per-graph URLs: hit a graph's cluster route from any subcommand by pointing --uri at it:

omnigraph read --uri http://server.example.com/graphs/beta --query ./q.gq ...

Runs, Policy, And Diagnostics

omnigraph lint  --query ./queries.gq --schema ./schema.pg --json
omnigraph check --query ./queries.gq ./graph.omni --json

omnigraph schema plan --schema ./next.pg ./graph.omni --json
omnigraph schema apply --schema ./next.pg ./graph.omni --json
omnigraph policy validate --config ./omnigraph.yaml
omnigraph policy test --config ./omnigraph.yaml
omnigraph policy explain --config ./omnigraph.yaml --actor act-alice --action read --branch main

omnigraph commit list ./graph.omni --json
omnigraph commit show --uri ./graph.omni <commit-id> --json

(The legacy omnigraph run list/show/publish/abort subcommands were removed in MR-771; mutations and loads publish atomically and the commit graph (omnigraph commit list) is the audit surface.)

query lint and query check are the same command surface. In v1, graph-backed lint uses local or s3:// graph URIs; HTTP targets are only supported when you also pass --schema.

Config

omnigraph.yaml lets the CLI and server share named graphs, defaults, and query roots:

graphs:
  local:
    uri: ./demo.omni
  dev:
    uri: http://127.0.0.1:8080
    bearer_token_env: OMNIGRAPH_BEARER_TOKEN

cli:
  graph: local
  branch: main

query:
  roots:
    - queries
    - .

The config file can also define:

  • server bind defaults
  • auth env files
  • query aliases for common read and change commands
  • policy.file for Cedar authorization rules

When policy is enabled, schema apply is authorized through the schema_apply action and is typically limited to admins on protected main.

Deprecated names

The CLI was renamed to align with the HTTP server's canonical endpoint names (POST /query, POST /mutate) and the query keyword in the GQ language. The previous spellings keep working forever; invocations emit a one-line warning to stderr and otherwise behave identically.

Old (deprecated) New (canonical) Migration
omnigraph read omnigraph query Same flags and behavior. read is a visible clap alias.
omnigraph change omnigraph mutate Same flags and behavior. change is a visible clap alias.
omnigraph query lint omnigraph lint Same flags. The argv-level shim rewrites query lint to lint.
omnigraph query check omnigraph check check is a visible alias of omnigraph lint.

The command: field in aliases.<name> in omnigraph.yaml accepts both read / change (legacy) and query / mutate (canonical); the two spellings are interchangeable on the wire via serde aliases.