Imported from jeremylongshore/tons-of-skills-marketplace (plugins/mcp/servicegraph/skills/find-web-developer/SKILL.md). Install upstream with npx skills add jeremylongshore/tons-of-skills-marketplace --skill find-web-developer. Copyright stays with the author (MIT).

find-web-developer

Overview

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.

Prerequisites

• ServiceGraph access, either:
  • the ServiceGraph MCP server (https://mcp.servicegraph.co) loaded in your harness — this plugin's .mcp.json wires it up; OAuth 2.1 + PKCE keeps credentials in the harness sandbox — or
  • a ServiceGraph API key (vk_…, minted at https://servicegraph.co/profile/api-keys) available as SERVICEGRAPH_API_KEY in the environment or .env.local for the REST path (setup steps under Auth below).
• An HTTP client for the REST path — the examples use curl.

Instructions

The loop is free-first: discovery, validation, search, and brief reads cost nothing; only unlock after the user confirms the spend.

1. Pick the call path — the ServiceGraph MCP tools if loaded, otherwise the REST flow (MCP server and Auth sections below).
2. GET /v1/datasets/pro_services/fields?include_values=1 — confirm the fields and values you plan to filter on exist.
3. Build the filter (Filter DSL below) and validate it with GET /v1/datasets/pro_services/check — or draft it from plain English via POST /v1/datasets/pro_services/translate-intent.
4. GET /v1/datasets/pro_services/search — present the free brief cards and let the user pick.
5. Quote the unlock cost (10 credits per row, 30-day TTL) and get an explicit go-ahead.
6. POST /v1/datasets/pro_services/unlocks with the chosen apexes; report the revealed detail.
7. GET /v1/me/credits to report the remaining balance when asked.

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.

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:

   ( 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' )

2. 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."

3. 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       := ":" | "=" | ">=" | "<=" | ">" | "<"
valueOrList := value ("," value)*
value    := IDENT | NUMBER | tagAtEvidence
tagAtEvidence := IDENT "@" ("low"|"medium"|"high")
bareword := IDENT | NUMBER          # → keyword:<bareword>

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):

Identifying firms — apex

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

Output

All responses are JSON.

• Search returns free brief firm cards — apex, name, location, and rating signals — plus a per-row unlock hint and the match total. Briefs never include url, phone_primary, email_primary, legal_name, address_full, or the full platforms map.
• Unlock (POST …/unlocks) returns each unlocked firm's detail block — contact fields, address, socials, the platforms map — plus per-item billing; detail stays readable for 30 days.
• Errors arrive as a JSON envelope {"error": {"code": "…", "message": "…"}} — see Errors below.

Examples

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.
2. User picks N to fully enrich. POST /unlocks = 10×N credits, atomic, detail returned.
3. 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": "..."}}.

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

Resources

• Upstream source: https://github.com/nostrband/ServiceGraph
• ServiceGraph API: https://api.servicegraph.co — keys at https://servicegraph.co/profile/api-keys
• Hub skill: servicegraph (this plugin) — the dataset-agnostic entry point when the user names ServiceGraph explicitly.