Find Web Developer

find-web-developer

Drive the ServiceGraph API (https://api.servicegraph.co) to find, shortlist, and enrich US web development firms via the pro_services dataset. The catalog tags ~14k firms with service_provided:web-development under industry:it_services (web-development is the second-largest service tag in the catalog).

Always pin both industry:it_services and service_provided:web-development. Platforms (WordPress, Webflow, Shopify, Next.js, etc.) and verticals (B2B, ecommerce, agency-vs-studio) are NOT separate tags — they're keyword substring matches on firm text.

Any HTTP client works (curl, fetch, requests). Examples below use curl.

Sibling skills — defer when scope is different

• Custom backend / API / internal tools / mobile app / distributed systems → find-software-developer. The end-product is software beyond a standard website.
• Broader marketing strategy and execution beyond the site build (paid media, content strategy, full digital agency engagement) → find-marketing-agency.
• SEO-only work on an existing site → find-seo-agency. Web devs build sites; SEO agencies optimize them. If the user wants new pages built AND optimized, this skill is fine.

If unsure, this skill is correct for "build / rebuild / refresh a website" tasks. The deferral kicks in when the deliverable is non-website software or non-build marketing work.

MCP server (preferred for authed calls)

If your harness has the ServiceGraph MCP server loaded (tools containing servicegraph), prefer those — OAuth 2.1 + PKCE keeps the token in the harness sandbox. Otherwise use the REST flow below.

API surface (dataset id: pro_services)

Every endpoint requires the bearer (Authorization: Bearer vk_…). No anonymous tier.

| Endpoint | Cost | Use it for | |---|---|---| | GET /v1/datasets/pro_services/fields[?include_values=1] | free | Confirm web-development is in the service_provided value list. | | GET /v1/datasets/pro_services/check?filter=… | free | Validate filter. | | POST /v1/datasets/pro_services/translate-intent | free | {intent} → DSL filter + sanity count. | | GET /v1/datasets/pro_services/search?filter=…&limit= | free | Brief firm cards + per-row unlock hint + total. | | GET /v1/datasets/pro_services/:apex | free | One row brief; detail only if unlocked. | | POST /v1/datasets/pro_services/unlocks | 10 credits / firm | {apexes:[...]} ≤100; atomic; 30-day TTL on detail. | | GET /v1/me/credits | free | Balance. |

Cost model. Discovery / validation / search / brief reads are free. Detail (url, phone, email, social, address, full platforms map) costs 10 credits per firm and lasts 30 days.

Auth

vk_* API keys minted in the dashboard. Keep the token out of the LLM context — never read .env* into your context; dispatch via shell.

1. Try the call first through a shell wrapper that sources .env.local:

``bash ( set -a; [ -f .env.local ] && . ./.env.local; set +a; curl -sS -H "Authorization: Bearer $SERVICEGRAPH_API_KEY" \ 'https://api.servicegraph.co/v1/datasets/pro_services/fields' ) ``

1. On 401 prompt the user:

> "Open https://servicegraph.co/profile/api-keys, create a > key, and add SERVICEGRAPH_API_KEY=vk_… to .env.local here > (or export it). Tell me when done. Please don't paste the key > into chat."

1. Retry after the user signals ready.

Filter DSL

GitHub-search-style.

filter   := orExpr
orExpr   := andExpr ("OR" andExpr)*
andExpr  := notExpr (("AND")? notExpr)*    # whitespace = implicit AND
notExpr  := ("NOT" | "-") notExpr | atom
atom     := "(" filter ")" | predicate
predicate:= IDENT op valueOrList | bareword
op       := ":" | "=" | ">=" | "" | "

Four rules that bite: AND binds tighter than OR (use parens); comma list = OR within one predicate; negation is -x or NOT x; bareword = keyword search (quote multi-word phrases).

Web-dev examples (validate yours with /check):

industry:it_services service_provided:web-development
industry:it_services service_provided:web-development@high state:CA webflow
industry:it_services service_provided:web-development shopify ecommerce
industry:it_services service_provided:web-development wordpress
industry:it_services service_provided:web-development headless next.js
industry:it_services service_provided:web-development@high rating>=4 has:clutch
industry:it_services service_provided:web-development b2b

Platform / vertical / framework → keyword mapping (none are structured tags — keyword them):

| User mentions | Add as keyword | |---|---| | WordPress | wordpress | | Webflow | webflow | | Shopify / Shopify Plus | shopify | | Squarespace / Wix | squarespace / wix | | Headless / JAMstack / Next.js / Gatsby | headless, next.js, gatsby | | Sanity / Contentful / Strapi | sanity, contentful, strapi | | Ecommerce / D2C / DTC | ecommerce, d2c, dtc | | B2B / SaaS / fintech | b2b, saas, fintech |

Identifying firms — apex

Firms are identified by their apex domain (focuslabllc.com, not www.focuslabllc.com/work).

Recipes

A. Marketing landing page (the baseline)

GET /v1/datasets/pro_services/search?filter=industry:it_services+service_provided:web-development&limit=10
# Present, get pick of 3. "Unlocking 3 = 30 credits, 30-day TTL."
POST /v1/datasets/pro_services/unlocks
  { "apexes": ["firm-a.com", "firm-b.com", "firm-c.com"] }

B. Webflow agency in a state

GET /v1/datasets/pro_services/search?filter=industry:it_services+service_provided:web-development+webflow+state:CA&limit=10

C. Shopify ecommerce rebuild

GET /v1/datasets/pro_services/search?filter=industry:it_services+service_provided:web-development+shopify+ecommerce&limit=10

For Shopify Plus, add plus as an additional bareword.

D. WordPress site refresh / maintenance

GET /v1/datasets/pro_services/search?filter=industry:it_services+service_provided:web-development+wordpress&limit=10

E. Headless CMS / Next.js

GET /v1/datasets/pro_services/search?filter=industry:it_services+service_provided:web-development+headless+next.js&limit=10

If sparse, drop next.js — headless alone captures the architectural pattern.

F. Indirect intent — "redesign and rebuild our site"

GET /v1/datasets/pro_services/search?filter=industry:it_services+service_provided:web-development&limit=10

Or use the translator:

POST /v1/datasets/pro_services/translate-intent
  { "intent": "agency to redesign and rebuild our outdated company site" }

If the user gave a constraint (location, platform, budget proxy via pricing_model), add it.

G. Quality threshold + platform

GET /v1/datasets/pro_services/search?filter=industry:it_services+service_provided:web-development@high+rating>=4+shopify+plus&limit=10

H. BYO apex list — enrich domains

User pastes 8–20 web-dev shop domains:

1. GET /v1/datasets/pro_services/:apex per domain — free brief

(404 = not in catalog, no charge). A 404 often means the firm isn't tagged with web-development specifically — it might be in the catalog under a different tag.

1. User picks N to fully enrich. POST /unlocks = 10×N credits,

atomic, detail returned.

1. Re-runs within 30-day TTL are free.

Gotchas

• Always pin both industry:it_services AND service_provided:web-development. Without the industry pin, web-development also appears on some marketing-agency rows; without the service pin, you'd return all IT-services firms.
• Defer to find-software-developer for non-website software. Internal tools, custom CRMs, mobile apps (iOS/Android), backend/API, distributed systems — those are software-developer territory. The boundary: is the end-product a public website, or something else?
• Defer to find-marketing-agency for full marketing engagements. "Build our site AND run our marketing" is broader than this skill — fire find-marketing-agency, which has web-design as a sub-service too.
• Platforms (WordPress, Webflow, Shopify, Next.js) are NOT structured tags. Keyword them.
• Frameworks (React, Vue, Astro, Gatsby) are NOT structured tags either. Keyword them.
• CMS/hosting/builder product comparisons aren't procurement. "WordPress vs Webflow vs Squarespace" is a knowledge question.
• Multi-word phrases must be split or quoted. headless cms parses as two AND'd keywords; "headless cms" is one phrase.
• Catalog is US-only B2B. Refuse offshore asks ("Manila", "Karachi"), individual freelancers, and DIY/code-help asks ("debug this CSS").
• Briefs DO include apex, name, location, ratings. They DON'T include url, phone_primary, email_primary, legal_name, address_full, full platforms — those require an unlock.
• not_found / not_in_dataset 404 = not in pro_services. Skip; not charged.
• Unlock is atomic. N apexes either all charge (up to 10×N credits) or none on 402.
• Within-TTL re-views are free (was_cached:true).

Errors

JSON envelope: {"error": {"code": "...", "message": "..."}}.

| Status | Code | What to do | |---|---|---| | 400 | filter_parse_error | position included; fix and re-validate with /check. | | 400 | kind_in_filter | Strip any kind: from filter. | | 400 | field_not_in_dataset | Drop the disallowed field. | | 400 | invalid_apex | Re-normalize. | | 401 | unauthorized / invalid_audience | Re-prompt for fresh vk_…. | | 402 | insufficient_credits | needed and balance; nothing charged. | | 404 | not_found / not_in_dataset | Skip; not charged. | | 429 | rate_limited | Honor Retry-After. |

End-to-end example

User: "Three Webflow agencies in California for our marketing site, ideally with at least a 4-star rating and a Clutch profile."

GET /v1/datasets/pro_services/fields?include_values=1
GET /v1/datasets/pro_services/check?filter=industry:it_services+service_provided:web-development@high+webflow+state:CA+rating>=4+has:clutch
GET /v1/datasets/pro_services/search?filter=...&limit=10
# Present briefs. "Unlocking 3 = 30 credits, 30-day TTL."
POST /v1/datasets/pro_services/unlocks
  { "apexes": ["firm-a.com", "firm-b.com", "firm-c.com"] }
GET /v1/me/credits

Source & license

This open-source skill is cataloged on AgentStack and links to its original source — we do not rehost the code.

• Author: nostrband
• Source: nostrband/ServiceGraph
• License: MIT
• Homepage: https://servicegraph.co

Install and usage instructions live in the source repository linked above.