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Selectpdf vs Chroma

Chroma scores higher on the AgentReady, 81/100 against 47/100. They differ on 18 of the 41 signals. Which ones decides whether an agent can adopt them without a person watching.

What each one is

Selectpdf. SelectPdf is a battle-tested HTML to PDF toolkit providing a .NET Library for self-hosted embedding and a REST API for any language.

Chroma. Open-source search infrastructure for AI.

Where Selectpdf is ahead

Selectpdf passes clear canonical domain, and Chroma does not. That is discover, whether an agent can find the product at all without being told it exists.

It also holds adopt: official typescript sdk and official python sdk. Chroma misses those.

Where Chroma is ahead

Chroma passes llms-full.txt / full agent docs and mcp discoverable, and Selectpdf does not. That is discover, whether an agent can find the product at all without being told it exists.

It also holds understand: structured api reference, openapi / spec quality, request examples provided, response examples provided and errors and status codes documented. Selectpdf misses those.

And on adopt, no mandatory sales call, agent-compatible signup flow, programmatic credential creation, cli available and mcp integration available. Selectpdf misses those.

Finally, on operate, structured, predictable output, machine-readable errors and observable execution. Selectpdf misses those.

What neither does

Both fail limits / constraints documented, retry behavior documented, idempotency support, rate-limit behavior predictable, agent compatibility verified. If your agent needs any of those, you will be building it yourself either way.

Score, pillar by pillar

The AgentReady splits into four pillars, scored separately, because a product can be easy to find and still impossible to adopt.

Discover. Chroma leads 93 to 80. Selectpdf misses llms-full.txt / full agent docs, mcp discoverable; Chroma misses clear canonical domain.

Understand is whether an agent can read the docs and work out how the API behaves before calling it. Chroma leads 92 to 31. Selectpdf misses structured api reference, openapi / spec quality, request examples provided, response examples provided, errors and status codes documented, limits / constraints documented; Chroma misses limits / constraints documented.

Adopt. Chroma leads 80 to 52. Selectpdf misses no mandatory sales call, agent-compatible signup flow, programmatic credential creation, cli available, mcp integration available; Chroma misses official typescript sdk, official python sdk.

Operate. Chroma leads 59 to 24. Selectpdf misses structured, predictable output, machine-readable errors, retry behavior documented, idempotency support, rate-limit behavior predictable, observable execution, agent compatibility verified; Chroma misses retry behavior documented, idempotency support, rate-limit behavior predictable, agent compatibility verified.

Pricing

Selectpdf starts at $19/mo and has a free tier. Chroma does not publish one and has a free tier.

Signal by signal

Which to pick

Chroma clears more of the signals an agent needs, so it is the safer default for unattended use. Full profiles: Selectpdf and Chroma. Alternatives to each: Selectpdf, Chroma.

An agent can fetch this as data: POST /v1/compare {"slugs": ["selectpdf", "trychroma"]}