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TechStackIntel

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What TechStackIntel is

TechStackIntel is a technographics API for retrieving curated company technology-stack snapshots and taxonomy-backed lookups. Its launch catalog contains 200 curated company domains. Use GET /v1/lookup for one domain or POST /v1/batch/lookup for a list; both follow the same lookup pipeline. The single-domain response wraps a nextAction field around data that includes the company, cache status, and schema version. Responses include evidence and can include optional product data. The API provides canonical taxonomy slugs for company stacks, and its taxonomy endpoint reports schema version 1.1.0 with confidence values on a 0–1 scale. Free use is available without a key, while a free API key provides a higher hourly request allowance. Signup for a key begins with email magic-link authentication; requests can send the key as X-Api-Key or as a Bearer token. A valid key can also query GET /v1/usage. The service accepts research submissions keyed by taxonomy slug and evidence, with optional products. The homepage provides cached snapshot previews, raw JSON previews, curl commands, a thin CLI wrapper, and batch lookup. TechStackIntel does not guarantee a snapshot for every domain, so lookups for domains without one return not-found until a snapshot exists.

Who it suits

TechStackIntel suits teams that need to preview company technology-stack data or integrate single-domain and batch lookups into a workflow. Its API, taxonomy slugs, evidence-bearing responses, and curl or CLI examples are relevant to developers and researchers working with company-stack data.

What it does well

Offers single-domain and batch lookup endpoints.
Launch catalog includes 200 curated company domains.
Responses include evidence and may include product data.
Taxonomy includes canonical slugs and a 0–1 confidence scale.
Free API keys support usage checks.

What to know first

Coverage is not guaranteed for every domain.
Anonymous access is limited to 60 requests per hour per IP.
Free API keys allow 120 requests per hour, with a cap after grace.

Limits

Anonymous access is limited to 60 requests per hour per IP. Free API keys allow 120 requests per hour, with grace up to 160 per hour before the cap returns; coverage is not guaranteed for every domain.

Plans

Plan	Billed and limits	Price
Free API key	120 requests/hour; grace up to 160/hour before the cap returns	Free

As techstackintel.com lists them, read 9 Oct 2026. The maker's own page has the final word.

Getting started

Open https://techstackintel.com/ to preview cached snapshots and JSON responses.
Use the anonymous API access for up to 60 requests per hour per IP.
Sign up for a free API key through email magic-link authentication.
Send the key using the X-Api-Key or Authorization: Bearer header.
Call GET /v1/lookup for one domain or POST /v1/batch/lookup for multiple domains.
Use curl commands or the thin CLI wrapper shown on the homepage.

Verdict

Choose TechStackIntel if you need API-based company-stack lookups, taxonomy-backed data, and both single and batch requests. The free key offers a 120-request hourly allowance, but domain coverage depends on an existing snapshot, so it may not return data for every company.

Questions

Is TechStackIntel free?

Yes. It has a free plan, including a free API key plan at no cost.

What are the request limits?

Anonymous access allows 60 requests per hour per IP. Free API keys allow 120 per hour, with grace up to 160 before the cap returns.

What platforms does it support?

The listed platforms are API and web.

How do I look up companies?

Use GET /v1/lookup for one domain or POST /v1/batch/lookup for multiple domains.

Does it cover every domain?

No coverage is guaranteed for every domain. A domain without a snapshot returns not-found until one exists.

Can I submit research?

Yes. POST /v1/contribute/research accepts submissions keyed by taxonomy slug and evidence, with optional products.

Facts from TechStackIntel's own pages

Audience: The homepage describes a workflow for previewing company stack data, confirming the JSON response shape, and integrating lookups or batch requests. · techstackintel.com, 9 Oct 2026
Authentication: Free API key signup starts through email magic-link authentication, and keys can be sent using X-Api-Key or Authorization: Bearer. · techstackintel.com, 9 Oct 2026
Batch lookup: POST /v1/batch/lookup accepts a list of domains and uses the same lookup pipeline as a single lookup. · techstackintel.com, 9 Oct 2026
Catalog: The homepage says the launch catalog contains 200 curated company domains. · techstackintel.com, 9 Oct 2026
CLI support: The homepage offers curl commands and a thin CLI wrapper for running the same lookup path. · techstackintel.com, 9 Oct 2026
Coverage limit: The maker says it does not guarantee coverage for every domain; a missing domain returns not-found until a snapshot exists. · techstackintel.com, 9 Oct 2026
Evidence submissions: POST /v1/contribute/research accepts research submissions keyed by taxonomy slug and evidence, with optional products. · techstackintel.com, 9 Oct 2026
Free access: Anonymous access is limited to 60 requests per hour per IP; free API keys allow 120 per hour, with grace up to 160 per hour before the cap returns. · techstackintel.com, 9 Oct 2026
Homepage workflow: The homepage presents cached snapshot previews, curl or thin CLI lookup commands, raw JSON response previews, and batch lookup. · techstackintel.com, 9 Oct 2026
Lookup: The API offers GET /v1/lookup for a single domain and POST /v1/batch/lookup for multiple domains. · techstackintel.com, 9 Oct 2026
Product: TechStackIntel describes itself as a technographics API for curated company stack snapshots and taxonomy-backed lookups. · techstackintel.com, 9 Oct 2026
Rate limits: Anonymous access is limited to 60 requests per hour per IP; free keys allow 120 per hour with grace up to 160 before the cap returns. · techstackintel.com, 9 Oct 2026
Research submissions: POST /v1/contribute/research accepts research submissions with taxonomy slugs, evidence, and optional products. · techstackintel.com, 9 Oct 2026
Response: A single lookup returns an envelope containing nextAction and data with company, cacheStatus, and schemaVersion. · techstackintel.com, 9 Oct 2026
Response data: The homepage says lookup responses include evidence and may include optional product data. · techstackintel.com, 9 Oct 2026
Service status: The health endpoint returned ok:true for the techstackintel service when opened. · techstackintel.com, 9 Oct 2026
Taxonomy: The API provides canonical taxonomy slugs for company.stack, and the taxonomy endpoint reports schema version 1.1.0 and a 0–1 confidence scale. · techstackintel.com, 9 Oct 2026
Usage endpoint: A valid API key can be used with GET /v1/usage to retrieve usage information. · techstackintel.com, 9 Oct 2026

Where TechStackIntel stands on Freedom251

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