codex-pdf 1.20.0

Authoritative, versioned PDF facts contract for Think Neverland tools.

---

title: "Overview" description: "Authoritative read-only PDF facts + render engine for the Print with Synergy tool family. Versioned contract, schema-validated output, deployed as three services." group: "Getting started" order: 1 slug: "overview"

codexPDF

codexPDF is the authoritative, read-only PDF facts + render reference for the Print with Synergy tool family.

Other engines consult codexPDF for canonical document facts instead of re-parsing PDFs independently. The contract is versioned and schema-validated.

Status

codex-pdf 1.18.0. Current surface includes:

• Python package (codex_pdf) with typed pydantic models.
• CLI (codex-pdf extract|schema|contract|validate|probe|parity|render|serve).
• HTTP API (/v1/extract, /v1/probe, /v1/extract/stream, /v1/render/{page,separations,heatmap,layer}, /v1/sample/{color,density}, /v1/walk/{type4,content-stream}, /v1/color/{resolve,match-pantone,neutral-density,inkbook}, /v1/geom/{tile,intersect,union,difference,offset}, /v1/retention/delete).
• TypeScript client (@printwithsynergy/codex-client) mirroring the Python codex_pdf.client surface, with SSE streaming for probe and extract.
• Versioned schemas in schemas/v1/ (document, color, geom).
• Cloudflare Worker (codex-edge) providing a KV-backed write-through cache layer in front of the API.
• Redis-Streams speculator (codex-speculator) that pre-warms Phase 1 + Phase 2 caches.
• Opt-in retention to Cloudflare R2 for the marketing demo: retain_for_training=true on POST /v1/extract persists the PDF + extract + metadata under a hive-partitioned key; the default remains "delete bytes on response". See CLAUDE.md for the deployed bucket layout.

See CLAUDE.md for the full deployed-service map (URLs, account IDs, version-bump checklist).

Quickstart

uv sync
uv run codex-pdf probe input.pdf --json
uv run codex-pdf extract input.pdf --pretty > out.json
uv run codex-pdf validate out.json
uv run codex-pdf parity --fixtures-root tests/fixtures --profile summary --max-files 5

Run the HTTP API locally:

uv run codex-pdf serve --host 0.0.0.0 --port 8080
curl localhost:8080/v1/version

Contract

The public surface is the JSON contract rooted at CodexDocument, plus the per-section contracts under color and geom.

• Document schema: schemas/v1/codex-document.schema.json
• Runtime model: codex_pdf.models.v1.CodexDocument
• Stability policy: SemVer (major for breaking contract changes; field additions are minor bumps).
• Live contract endpoint: GET /v1/contract returns the endpoint inventory plus section_schema_versions.

Documentation

Topic	Doc
Standard data-request pattern (requestAsset)	docs/data-requests.md
Architecture and boundaries	docs/architecture.md
CLI commands and usage	docs/cli.md
Contract and schema versioning	docs/contract.md
Deploying the API + speculator + edge	docs/deploy.md
Parity profiles and baselines	docs/parity.md
Preflight ingest adapters	docs/preflight-ingest.md
Codex change ripple rule	docs/operations/codex-change-ripple.md
Marketing deploy template	docs/operations/marketing-deploy-template.md

Contributing

We welcome PRs that fit codex's lane (extraction, normalization, detection signals). Display concerns belong in Loupe; rule pass/fail logic belongs in Lint.

Read CONTRIBUTING.md for the dev setup, test commands, schema-bump rules, and release checklist.

Security

Please report vulnerabilities privately to [e-mail] — do not open a public issue.

The full disclosure policy, supported-version matrix, and scope (including the read-only PDF invariant) live in SECURITY.md.

License

codexPDF is distributed under the GNU Affero General Public License v3.0 or later (SPDX-License-Identifier: AGPL-3.0-or-later). The full license text is in LICENSE.

AGPL applies in particular when codex is reachable over a network — modifications served to remote users must be made available to those users under the same terms.